A receiver and assembly method thereof

Abstract

The present invention discloses a receiver and an assembly method thereof. The receiver includes a shell, an isolator, a diaphragm sound-generating mechanism and an electromagnetic drive mechanism. The isolator divides the inner cavity into a first cavity and a second cavity. The isolator has a vibration accommodating cavity with upper and lower openings. The electromagnetic drive mechanism includes a first magnetic generator and a second magnetic generator. The first magnetic generator provides a first variable magnetic field for the first cavity, and the second magnetic generator provides a second variable magnetic field for the second cavity. The diaphragm sound-generating mechanism is arranged in the vibration accommodating cavity. The assembly method is as follows: the first magnetic generator is installed inside the first shell; the second magnetic generator is installed inside the second shell; the diaphragm sound-generating mechanism is arranged in the vibration accommodating cavity of the isolator; the first shell and the second shell are snap-fitted and sealed, and the isolator is fixed between the first shell and the second shell. The present invention simplifies the internal structure of the receiver, improves assembly efficiency, and can prevent magnetic short circuits.

Description

Technical Field

[0001] The present invention relates to the technical field of receivers, and in particular to a receiver and an assembling method thereof. Background Art

[0002] A receiver is a miniature electroacoustic device that converts audio electrical signals into sound signals without sound leakage to achieve audio playback. It is widely used in portable electronic devices such as mobile phones, laptops, headphones, and hearing aids. With the continuous development of mobile electronic devices, simplifying the structure and assembly method of receivers used in mobile electronic devices is the unanimous pursuit of manufacturers.

[0003] According to the working principle, receivers can be divided into dynamic type, electromagnetic type (moving iron type), piezoelectric type, carbon particle type, etc. Among them, the moving iron type receiver is widely used due to its stable frequency response curve and high sensitivity. The working principle of the moving iron type receiver is electromagnetic energy conversion, that is, the sound is transmitted to the electromagnetic coil in the form of an AC signal. The electromagnetic coil generates an electromagnetic field to act on the balanced armature. The magnets on both sides of the balanced armature drive the balanced armature to vibrate under the action of the magnetic field. One end of the balanced armature is connected to the diaphragm through a guide pin. The diaphragm vibrates at a corresponding frequency under the vibration of the balanced armature, thereby arousing the surrounding air to move accordingly and reproduce the sound.

[0004] When assembling a current moving-iron receiver, the coil is generally first placed on the balancing armature, and then the balancing armature is fixed in the housing. Thereafter, the two ends of the diaphragm are manually fixed to the inner wall of the housing, and the vibrating parts of the diaphragm and the balancing armature are aligned. Then, the diaphragm and the vibrating end of the balancing armature are connected through a guide pin or a transmission rod. Since the diaphragm needs to be manually fixed to the inner wall of the housing, the assembly process is relatively complicated, the assembly efficiency is low, and the time is long. In addition, the entire receiver needs to be disassembled and assembled during later maintenance or performance testing, which is very inconvenient. Moreover, the way the diaphragm and the vibrating parts of the balancing armature are connected through guide pins or transmission rods leads to a complex structure, which further increases the complexity of the assembly process.

[0005] In summary, how to simplify the structure of a moving-arm receiver and simplify its assembly method is one of the problems that urgently need to be solved in this field. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the technical problem that the moving-iron receiver in the prior art has a complex structure, which in turn leads to a complex assembly process, thereby providing a receiver with a simple structure and easy assembly.

[0007] To this end, the present invention provides a receiver, comprising:

[0008] The housing comprises a first housing and a second housing, wherein the first housing is detachably engaged with the second housing to form an inner cavity;

[0009] An isolating member is disposed in the inner cavity and divides the inner cavity into a first cavity and a second cavity, wherein the isolating member has a vibration accommodating cavity with upper and lower openings;

[0010] The electromagnetic drive mechanism comprises a first magnetic generating member and a second magnetic generating member, wherein the first magnetic generating member provides a first variable magnetic field for the first cavity, and the second magnetic generating member provides a second variable magnetic field for the second cavity, and the first variable magnetic field and the second variable magnetic field have the same polarity near the isolation member;

[0011] The diaphragm sound-generating mechanism is arranged in the vibration accommodating cavity, has a fixed magnetic field, and can vibrate and generate sound in the vibration accommodating cavity under the driving of the first variable magnetic field and the second variable magnetic field.

[0012] Optionally, the diaphragm sound-generating mechanism is suspended at the top or bottom of the vibration accommodating cavity under the magnetic attraction of the first magnetic generating component or the second magnetic generating component.

[0013] Optionally, the first magnetic generating element includes:

[0014] A first magnetic yoke is fixedly disposed inside the first cavity, wherein the first magnetic yoke comprises a first inner layer and a first outer layer;

[0015] A first electromagnetic coil, wound between the first inner layer and the first outer layer;

[0016] And / or, the second magnetic generating element comprises:

[0017] A second magnetic yoke is fixedly disposed inside the second cavity, wherein the second magnetic yoke comprises a second inner layer and a second outer layer;

[0018] The second electromagnetic coil is wound between the second inner layer and the second outer layer.

[0019] Optionally, a contact gap between the diaphragm sound-generating mechanism and the inner wall of the vibration accommodating cavity is filled with magnetic fluid.

[0020] Optionally, the outer edge of the diaphragm sound-generating mechanism is fixedly connected to the inner wall of the vibration accommodating cavity.

[0021] Optionally, the diaphragm sound-generating mechanism includes a vibration generating device, and the vibration generating device has the fixed magnetic field.

[0022] Optionally, the vibration generating device comprises an elastic vibration plate, and the elastic vibration plate is made of magnetic material;

[0023] Alternatively, the vibration generating device includes an elastic vibration plate and a magnet fixed on the elastic vibration plate, and the elastic vibration plate is made of non-magnetic material.

[0024] Optionally, the diaphragm sound-generating mechanism further includes:

[0025] The sound producing membrane is attached to the vibration generating device.

[0026] Optionally, the diaphragm sound-generating mechanism comprises:

[0027] A fixed frame having a hollow through hole, and an outer edge thereof is fixedly connected to the vibration accommodating cavity;

[0028] A vibration generating device is disposed in the hollow through hole and connected to the fixing frame through a plurality of connecting strips;

[0029] The pronunciation membrane is fixedly connected to the fixing frame on all sides and covers the hollow through hole. The middle part of the pronunciation membrane is fixedly connected to the vibration generating device.

[0030] Optionally, the isolation member is an isolation gasket with a certain height, and the isolation gasket is made of non-magnetic material.

[0031] Optionally, the outer edge of the isolation member is fixedly installed between the first inner layer and the second inner layer and between the first electromagnetic coil and the second electromagnetic coil, and the first shell and the second shell and the first outer layer and the second outer layer are all sealed and fixedly connected.

[0032] Optionally, the shell, the first magnetic generating member, the second magnetic generating member, and the isolation member are all cylindrical in shape.

[0033] The present invention also provides a method for preparing the above-mentioned receiver, comprising the following steps:

[0034] Installing the first magnetic generating element inside the first shell;

[0035] Installing the second magnetic generating element inside the second housing;

[0036] The diaphragm sound-generating mechanism is arranged in the vibration accommodating cavity of the isolation member;

[0037] The first shell and the second shell are snap-fitted and sealed to be connected, and the isolation piece is fixed between the first shell and the second shell.

[0038] Optionally, the step of disposing the diaphragm sound-generating mechanism in the vibration accommodating cavity of the isolation member is specifically as follows:

[0039] The diaphragm sound-generating mechanism is suspended in the vibration accommodating cavity of the isolation component. The diaphragm sound-generating mechanism is suspended at the top or bottom of the vibration accommodating cavity under the magnetic attraction of the first magnetic generating component or the second magnetic generating component.

[0040] Optionally, before the step of suspending the diaphragm sound-generating mechanism in the vibration accommodating cavity of the isolation component, the step also includes the step of coating a magnetic fluid on the inner wall of the vibration accommodating cavity.

[0041] Optionally, the first magnetic generating component includes a first magnetic yoke and a first electromagnetic coil, the first magnetic yoke includes a first inner layer and a first outer layer, and before the first magnetic generating component is installed inside the first shell, the method further includes the following steps:

[0042] The first electromagnetic coil is wound between the first inner layer and the first outer layer of the first magnetic yoke to form the first magnetic generating member.

[0043] Optionally, the second magnetic generating member includes a second magnetic yoke and a second electromagnetic coil, the second magnetic yoke includes a second inner layer and a second outer layer, and before the second magnetic generating member is installed inside the second housing, the method further includes the following steps:

[0044] The second electromagnetic coil is wound between the second inner layer and the second outer layer of the second magnetic yoke to form the second magnetic generating member.

[0045] Optionally, the step of disposing the diaphragm sound-generating mechanism in the vibration accommodating cavity of the isolation member is specifically as follows:

[0046] The outer edge of the diaphragm sound-generating mechanism is fixedly connected to the inner wall of the vibration accommodating cavity of the isolation member.

[0047] Optionally, the diaphragm sound-generating mechanism includes a vibration generating device and a sound-generating membrane. Before the step of disposing the diaphragm sound-generating mechanism in the vibration accommodating cavity of the isolation component, the step also includes attaching the sound-generating membrane to the vibration generating device to form the diaphragm sound-generating mechanism.

[0048] Optionally, the diaphragm sound-generating mechanism comprises a fixing frame, a vibration generating device and a sound-generating membrane, and before the step of arranging the diaphragm sound-generating mechanism in the vibration accommodating cavity of the isolation member, the step further comprises:

[0049] The steps of setting the vibration generating device in the hollow through hole of the fixed frame, connecting the vibration generating device to the fixed frame through a plurality of connecting strips, fixing the sound-generating membrane to the vibration generating device and the fixed frame, and covering the hollow through hole to form a diaphragm sound-generating mechanism.

[0050] Optionally, the step of fixing the isolation member between the first shell and the second shell is specifically:

[0051] The outer edge of the isolating element is fixedly installed between the first inner layer and the second inner layer and between the first electromagnetic coil and the second electromagnetic coil, and the first shell and the second shell and the first outer layer and the second outer layer are all sealed and fixedly connected.

[0052] The technical solution of the present invention has the following advantages:

[0053] 1. The receiver provided by the present invention includes a shell, an isolation member, an electromagnetic driving mechanism and a diaphragm sound-emitting mechanism, wherein the isolation member divides the inner cavity into a first cavity and a second cavity, the first magnetic generating member and the second magnetic generating member in the electromagnetic driving mechanism are respectively arranged in the first cavity and the second cavity, respectively providing a first variable magnetic field and a second variable magnetic field, and the diaphragm sound-emitting mechanism is arranged as a whole in the vibration accommodating cavity of the isolation member, and the diaphragm sound-emitting mechanism has a fixed magnetic field, and through the interaction between the fixed magnetic field and the magnetic field between the first variable magnetic field and the second variable magnetic field, the diaphragm sound-emitting mechanism vibrates up and down in the vibration accommodating cavity to produce sound.

[0054] Different from the structure of the traditional receiver in which the sound-generating membrane is installed on the shell and the sound-generating membrane is connected to the balance armature through a guide pin or a transmission rod, the receiver provided by the present invention has a diaphragm sound-generating mechanism installed in the vibration accommodating cavity as a whole, which simplifies the internal structure of the receiver and improves the assembly efficiency. In addition, the receiver of this structure is composed of three modules: the first shell and the first magnetic generating part installed in the first cavity of the first shell as the first module; the second shell and the second magnetic generating part installed in the second cavity of the second shell as the second module; the isolation member and the diaphragm sound-generating mechanism arranged in the vibration accommodating cavity of the isolation member as the third module; the three modules are assembled separately, and finally the three modules are assembled together to complete the assembly process of the receiver, thus greatly simplifying the internal structure of the receiver and improving the assembly efficiency.

[0055] In addition, the setting of the isolation member, on the one hand, separates the first magnetic generating member from the second magnetic generating member, effectively preventing the occurrence of magnetic short circuit; on the other hand, the vibration accommodating cavity in the isolation member provides a certain vibration space and vibration amplitude for the diaphragm sound-generating mechanism, ensuring its sound-generating effect.

[0056] 2. The receiver provided by the present invention utilizes the magnetic attraction between the first magnetic generating part, the second magnetic generating part and the diaphragm sound generating mechanism to suspend the diaphragm sound generating mechanism at the top or bottom of the vibration accommodating chamber. Specifically, when the receiver is not working, since the diaphragm sound generating mechanism has a fixed magnetic field, there is magnetic attraction between it and both the first magnetic generating part and the second magnetic generating part. When the diaphragm sound generating mechanism is closer to the first magnetic generating part, the attraction between it and the first magnetic generating part is greater, and it is adsorbed on the end of the vibration accommodating chamber close to the first magnetic generating part. Otherwise, it is adsorbed on the end close to the second magnetic generating part. In this way, there is no need to manually install the diaphragm sound generating mechanism in the vibration accommodating chamber, which further simplifies the assembly process and improves the degree of automation of the receiver.

[0057] 3. The receiver provided by the present invention comprises a first magnetic generating component including a first magnetic yoke and a first electromagnetic coil, the first electromagnetic coil is wound between a first inner layer and a first outer layer of the first magnetic yoke, and a second magnetic generating component including a second magnetic yoke and a second electromagnetic coil, the second electromagnetic coil is wound between a second inner layer and a second outer layer of the second magnetic yoke.

[0058] The magnetic generating element of this structure utilizes the law of electromagnetic induction to generate a first variable magnetic field and a second variable magnetic field by passing a forward current or a reverse current through the first electromagnetic coil and the second electromagnetic coil. It has a simple structure and high reliability.

[0059] The arrangement of the first magnetic yoke and the second magnetic yoke, on the one hand, concentrates the first variable magnetic field and the second variable magnetic field in the first cavity and the second cavity respectively, thereby enhancing the interaction force between the magnetic fields, especially near the isolation member where the magnetic field force is strongest. This enables the diaphragm sound-emitting mechanism suspended in the vibration cavity of the isolation member to move to the top or bottom of the vibration cavity, i.e., the position where the magnetic field force is strongest, under the drive of the first variable magnetic field and the second variable magnetic field, without moving outside the vibration cavity.

[0060] On the other hand, since the magnetic yoke is made of materials such as soft iron or soft magnetic alloy with high magnetic permeability, the diaphragm sound-producing mechanism has a fixed magnetic field. Therefore, there is magnetic attraction between the first magnetic yoke, the second magnetic yoke and the diaphragm sound-producing mechanism. This allows the suspended diaphragm sound-producing mechanism to be suspended in the vibration accommodating cavity close to one end of the first magnetic yoke or one end of the second magnetic yoke under the action of the magnetic attraction when no power is supplied.

[0061] 4. The receiver provided by the present invention is filled with a magnetic fluid at the contact gap between the diaphragm sound-generating mechanism and the inside of the vibration accommodating cavity. Magnetic fluid is a new type of nano-functional material, which has both the fluidity of liquid and the magnetism of solid magnetic material, and has excellent magnetic conductivity. The application of magnetic fluid to the present invention, on the one hand, is conducive to sealing between the first cavity and the second cavity, avoiding the space flow on the upper and lower sides of the diaphragm sound-generating mechanism, which affects the sound; on the other hand, since the magnetic fluid has good magnetic conductivity, it can enhance the magnetic field force. Specifically, when the receiver is not working, it can enhance the adsorption force between the first magnetic generating part, the second magnetic generating part and the suspended diaphragm sound-generating mechanism. When the receiver is working, it plays a guiding role on the first variable magnetic field and the second variable magnetic field, thereby enhancing the magnetic field force between them and the fixed magnetic field, thereby improving the sensitivity of the receiver.

[0062] 5. In the receiver provided by the present invention, the outer edge of the diaphragm sound-emitting mechanism is fixedly connected to the inner wall of the vibration accommodating cavity. When the receiver is working, the diaphragm sound-emitting mechanism is driven by the first variable magnetic field and the second variable magnetic field, and the middle part blows air toward the first cavity and the second cavity to make sound. The receiver of this structure has high stability and reliability.

[0063] 6. The receiver provided by the present invention has a diaphragm sound-generating mechanism that only includes a vibration-generating device, which has a fixed magnetic field. When the diaphragm sound-generating mechanism is suspended in the vibration accommodating cavity, the vibration-generating device is driven by a variable magnetic field to vibrate up and down in the vibration accommodating cavity, thereby stirring the air on both sides to achieve sound. When the outer edge of the diaphragm sound-generating mechanism is connected to the inner wall of the vibration accommodating cavity, the vibration-generating device is driven by a variable magnetic field to stir the air in the middle toward both sides to achieve sound. The diaphragm sound-generating mechanism of this structure omits the traditional sound-generating membrane on the basis of satisfying the sound generation, greatly simplifying the structure and assembly process.

[0064] 7. The receiver provided by the present invention, the diaphragm sound-generating mechanism includes a fixed frame, a vibration generating device and a sound-generating membrane. The vibration generating device is located in the hollow through hole of the fixed frame and is connected to the fixed frame through a connecting strip. The sound-generating membrane is connected to the fixed frame and the vibration generating device and covers the hollow through hole.

[0065] The diaphragm sound-generating mechanism of this structure increases the stiffness of the vibration generating device, making it easier for the vibration generating device to vibrate under the drive of the first variable magnetic field and the second variable magnetic field, and the vibration frequency is increased, thereby improving the high-frequency performance of the diaphragm sound-generating mechanism. In addition, there is a gap between the fixed frame and the diaphragm generating device, and the sound-generating membrane covers the gap and is connected to the vibration generating device and the fixed frame. Therefore, when the receiver is working, the vibration generating device is subjected to the force of the magnetic field, driving the sound-generating membrane covering the gap to agitate the air to achieve sound generation, and the sound generation effect is better.

[0066] 8. The receiver provided by the present invention has a shell, a first magnetic generating element, a second magnetic generating element and an isolating element all in a cylindrical shape. Compared with a rectangular shape or other shapes, the volume of the receiver can be made very small, thereby improving portability.

[0067] 9. The assembly method of the above-mentioned receiver provided by the present invention is as follows: first, the first magnetic generating component is installed in the first shell to form a first module, and the second magnetic generating component is installed in the second shell to form a second module. The diaphragm sound-generating mechanism is arranged in the vibration accommodating chamber of the isolating component to form a third module. Then, the assembled first module and the second module are assembled, and the third module is assembled between the first module and the second module, so as to complete the assembly process of the entire receiver. Since the three modules are assembled separately, a lot of assembly time is saved and the assembly efficiency is improved. In addition, the diaphragm sound-generating mechanism is assembled as a whole, which is different from the assembly method of assembling the sounding membrane on the shell during the assembly of the traditional receiver, and then the sounding membrane is connected to the balance armature through a guide pin or a transmission rod, which greatly simplifies the assembly process and improves the assembly efficiency. The diaphragm sound-generating mechanism is arranged in the vibration accommodating chamber of the isolating component. On the one hand, the setting of the isolating component separates the first magnetic generating component and the second magnetic generating component, effectively preventing the occurrence of magnetic short circuit; on the other hand, the vibration accommodating chamber in the isolating component provides a certain vibration space and vibration amplitude for the diaphragm sound-generating mechanism, ensuring its sounding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] 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.

[0069] Figure 1 A schematic diagram of the structure of a receiver provided by the present invention;

[0070] Figure 2 A partial top view of a structure of a diaphragm sound-generating mechanism in a receiver provided by the present invention;

[0071] Figure 3 A top view of the receiver provided by the present invention.

[0072] Description of reference numerals:

[0073] 1-shell; 11-first shell; 12-second shell; 13-sound outlet; 14-first cavity; 15-second cavity; 16-tuning hole;

[0074] 2-isolator; 21-vibration accommodating chamber; 211-magnetic fluid;

[0075] 3-diaphragm sound-generating mechanism; 31-pronunciation membrane; 32-vibration generating device; 321-elastic vibration plate; 3211-connecting strip; 322-magnetic steel; 33-fixing frame; 331-hollow through hole;

[0076] 41-first magnetic generating member; 411-first magnetic yoke; 4111-first inner layer; 4112-first outer layer; 412-first electromagnetic coil;

[0077] 42 - second magnetic generating element; 421 - second magnetic yoke; 4211 - second inner layer; 4212 - second outer layer; 422 - second electromagnetic coil. DETAILED DESCRIPTION

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] Example 1

[0083] This embodiment provides a receiver, such as Figures 1 to 3 As shown, including:

[0084] The housing 1 comprises a first housing 11 and a second housing 12. The first housing 11 is detachably fastened to the second housing 12 to form an inner cavity. A sound outlet 13 is provided on the housing 1.

[0085] The isolator 2 is disposed in the inner cavity and divides the inner cavity into a first cavity 14 and a second cavity 15. The isolator 2 has a vibration accommodating cavity 21 with upper and lower openings.

[0086] The electromagnetic drive mechanism includes a first magnetic generating member 41 and a second magnetic generating member 42. The first magnetic generating member 41 provides a first variable magnetic field for the first cavity 14, and the second magnetic generating member 42 provides a second variable magnetic field for the second cavity 15. The first variable magnetic field and the second variable magnetic field are both in a vertical direction and in opposite directions, that is, the first variable magnetic field and the second variable magnetic field have the same polarity close to the isolation member 2.

[0087] The diaphragm sound-generating mechanism 3 is arranged in the vibration accommodating cavity 21 and has a fixed magnetic field distributed in the vertical direction. There is a magnetic field effect between the fixed magnetic field and the first variable magnetic field and the second variable magnetic field. Driven by the magnetic field effect, the diaphragm sound-generating mechanism 3 vibrates and produces sound in the vibration accommodating cavity 21.

[0088] The specific working process of the receiver in this embodiment is as follows:

[0089] Assume that the fixed magnetic field of the diaphragm sound-generating mechanism 3 has the N pole at the top and the S pole at the bottom, the first variable magnetic field provided by the first magnetic generating element 41 in the first cavity 14 has the N pole at the top and the S pole at the bottom, and the second variable magnetic field provided by the second magnetic generating element 42 in the second cavity 15 has the N pole at the bottom and the S pole at the top, that is, the S pole of the first variable magnetic field is opposite to the N pole of the fixed magnetic field, and the S pole of the second variable magnetic field is opposite to the S pole of the fixed magnetic field. According to the law that "like magnetic poles repel each other and unlike magnetic poles attract each other", the fixed magnetic field is attracted by the first variable magnetic field in the first cavity 14 and repelled by the second variable magnetic field in the second cavity 15. At this time, the diaphragm sound-generating mechanism 3 vibrates toward the first cavity 14. Similarly, when the magnetic field directions of the first variable magnetic field and the second variable magnetic field are changed, the diaphragm sound-generating mechanism 3 vibrates toward the second cavity 15. In this way, the diaphragm sound-generating mechanism 3 is vibrated up and down to generate sound.

[0090] The setting of the isolation member 2, on the one hand, separates the first magnetic generating member 41 and the second magnetic generating member 42, effectively preventing the first variable magnetic field and the second variable magnetic field from interfering with each other, thereby avoiding the occurrence of magnetic short circuit; on the other hand, the vibration accommodating cavity 21 in the isolation member 2 provides a certain vibration space and vibration amplitude for the diaphragm sound-generating mechanism 3, thereby ensuring its sound-generating effect.

[0091] Different from the structure of the conventional receiver in which the pronunciation membrane 31 is installed on the shell 1 and the pronunciation membrane 31 is connected to the balance armature through a guide pin or a transmission rod, the receiver provided by the present invention has the diaphragm sound-generating mechanism 3 installed in the vibration accommodating cavity 21 as a whole, which simplifies the internal structure of the receiver and improves the assembly efficiency. In addition, the receiver of this structure is composed of three modules: the first shell 11 and the first magnetic generating component 41 installed in the first cavity 14 of the first shell 11 as the first module; the second shell 12 and the second magnetic generating component 42 installed in the second cavity 15 of the second shell 12 as the second module; the isolation member 2 and the diaphragm sound-generating mechanism 3 arranged in the vibration accommodating cavity 21 of the isolation member 2 as the third module; the three modules are assembled separately, and finally the three modules are assembled together to complete the assembly process of the receiver, thus greatly simplifying the internal structure of the receiver, improving the modularization degree of the receiver, and improving the assembly efficiency.

[0092] As a preferred design solution, the diaphragm sound generating mechanism 3 is suspended at the top or bottom of the vibration accommodating cavity 21 under the magnetic attraction of the first magnetic generating element 41 or the second magnetic generating element 42 .

[0093] Specifically, when the receiver is not working, since the diaphragm sound-generating mechanism 3 has a fixed magnetic field, there is magnetic attraction between it and the first magnetic generating member 41 and the second magnetic generating member 42. When the diaphragm sound-generating mechanism 3 is close to the first magnetic generating member 41, the attraction between it and the first magnetic generating member 41 is greater, and it is adsorbed on the end close to the first magnetic generating member 41 in the vibration accommodating cavity 21. Otherwise, it is adsorbed on the end close to the second magnetic generating member 42. In this way, there is no need to manually install the diaphragm sound-generating mechanism 3 in the vibration accommodating cavity 21, which further simplifies the assembly process and improves the degree of automation of the receiver.

[0094] like Figure 1 As shown, the first magnetic generating member 41 includes:

[0095] The first magnetic yoke 411 is fixedly disposed inside the first cavity 14. The first magnetic yoke 411 includes a first inner layer 4111 and a first outer layer 4112. One end of the first magnetic yoke 411 close to the outside of the first cavity 14 is closed.

[0096] The first electromagnetic coil 412 is wound between the first inner layer 4111 and the first outer layer 4112;

[0097] The second magnetic generating member 42 comprises:

[0098] The second magnetic yoke 421 is fixedly disposed inside the second cavity 15 . The second magnetic yoke 421 includes a second inner layer 4211 and a second outer layer 4212 . One end of the second magnetic yoke 421 close to the outside of the second cavity 15 is closed.

[0099] The second electromagnetic coil 422 is wound between the second inner layer 4211 and the second outer layer 4212 .

[0100] The magnetic generating element of this structure utilizes the law of electromagnetic induction to generate a first variable magnetic field and a second variable magnetic field by passing a forward current or a reverse current through the first electromagnetic coil 412 and the second electromagnetic coil 422 . It has a simple structure and high reliability.

[0101] The arrangement of the first magnetic yoke 411 and the second magnetic yoke 421, on the one hand, concentrates the first variable magnetic field and the second variable magnetic field in the first cavity 14 and the second cavity 15 respectively, thereby enhancing the force between the magnetic fields, especially near the isolation member 2 where the magnetic field force is strongest. As a result, the diaphragm sound-emitting mechanism 3 suspended in the vibration cavity 21 of the isolation member 2 is driven by the first variable magnetic field and the second variable magnetic field. The extreme position of movement is the top or bottom end of the vibration cavity 21, i.e., the position where the magnetic field force is strongest, and it will not move outside the vibration cavity 21.

[0102] On the other hand, since the magnetic yoke is made of materials such as soft iron or soft magnetic alloy with high magnetic permeability, the diaphragm sound-producing mechanism 3 has a fixed magnetic field. Therefore, there is a magnetic attraction between the first magnetic yoke 411 and the second magnetic yoke 421 and the diaphragm sound-producing mechanism 3. As a result, when no power is supplied, the suspended diaphragm sound-producing mechanism 3 can be suspended in the vibration accommodating cavity 21 under the magnetic attraction, close to one end of the first magnetic yoke 411 or close to one end of the second magnetic yoke 421.

[0103] The contact gap between the diaphragm sound-generating mechanism 3 and the inner wall of the vibration accommodating cavity 21 is filled with a magnetic fluid 211. The magnetic fluid 211 is a new type of nano-functional material, which has both the fluidity of liquid and the magnetism of solid magnetic material, and has excellent magnetic conductivity. Applying the magnetic fluid 211 to the present invention, on the one hand, is conducive to sealing between the first cavity 14 and the second cavity 15, avoiding the space flow on the upper and lower sides of the diaphragm sound-generating mechanism 3, which affects the sound; on the other hand, since the magnetic fluid 211 has good magnetic conductivity, it can enhance the magnetic field force. Specifically, when the receiver is not working, it can enhance the adsorption force between the first magnetic generating part 41, the second magnetic generating part 42 and the suspended diaphragm sound-generating mechanism 3. When the receiver is working, it plays a guiding role on the first variable magnetic field and the second variable magnetic field, so that the magnetic field force between them and the fixed magnetic field is enhanced, thereby improving the sensitivity of the receiver.

[0104] As a variation of the design, the outer edge of the diaphragm sound-generating mechanism 3 is fixedly connected to the inner wall of the vibration accommodating cavity 21, and the fixing method is spot welding or gluing. When the receiver is working, the diaphragm sound-generating mechanism 3 is driven by the first variable magnetic field and the second variable magnetic field, and the middle part of the diaphragm sound-generating mechanism 3 blows air toward the first cavity 14 and the second cavity 15, thereby generating sound. The receiver of this structure has high stability and reliability.

[0105] In this embodiment, the diaphragm sound-generating mechanism 3 includes a vibration generating device 32, and the vibration generating device 32 has a fixed magnetic field. When the diaphragm sound-generating mechanism 3 is suspended in the vibration accommodating chamber 21, the vibration generating device 32 is driven by the variable magnetic field to vibrate up and down in the vibration accommodating chamber 21, thereby stirring the air on both sides to achieve sound; when the outer edge of the diaphragm sound-generating mechanism 3 is connected to the inner wall of the vibration accommodating chamber 21, the vibration generating device 32 is driven by the variable magnetic field, and the middle part stirs the air in the upper and lower directions to achieve sound. The diaphragm sound-generating mechanism 3 of this structure omits the traditional pronunciation membrane 31 on the basis of satisfying the sound generation, which greatly simplifies the structure and assembly process.

[0106] The vibration generating device 32 includes an elastic vibration plate 321 and a magnet 322 fixed on the elastic vibration plate 321. The elastic vibration plate 321 is made of non-magnetic material, and the magnet 322 is made of magnetic material. The magnet 322 is generally glued to one side of the elastic vibration plate 321 and extends to a position close to the inner wall of the vibration accommodating cavity. Since the magnet 322 is made of magnetic material, the magnet 322 can generate a fixed magnetic field. Under the action of the variable magnetic field of the first cavity 14 and the second cavity 15, the magnet 322 will alternately receive an upward or downward magnetic field force, thereby driving the elastic vibration plate 321 to vibrate up and down to produce sound.

[0107] As a variation of the design of the vibration generating device 32, the vibration generating device 32 only includes an elastic vibration plate 321, and the elastic vibration plate 321 is made of a magnetic material, such as a high-conductivity hard magnetic alloy. In this way, the magnetic steel 322 is omitted, and the magnetic steel 322 and the elastic vibration plate 321 are combined into one, thereby simplifying the structure of the vibration generating device 32.

[0108] As a variation of the design of the diaphragm sound-generating mechanism 3, the diaphragm sound-generating mechanism 3 further includes a sound-generating membrane 31, which is attached to the vibration generating device 32. The provision of the sound-generating membrane 31 is conducive to improving its sound-generating effect.

[0109] As another variation design of the diaphragm sound-generating mechanism 3, Figure 2 As shown, the diaphragm sound-generating mechanism 3 also includes:

[0110] The fixing frame 33 has a hollow through hole 331, and the vibration generating device 32 is disposed in the hollow through hole 331 and connected to the fixing frame 33 through a plurality of connecting bars 3211;

[0111] The pronunciation membrane 31 is fixedly connected to the fixing frame 33 on all sides and covers the hollow through hole 331. The middle part of the pronunciation membrane 31 is fixedly connected to the vibration generating device 32.

[0112] The diaphragm sound-generating mechanism 3 is only applicable to the state where its outer edge is fixedly connected to the inner wall of the vibration accommodating cavity 21 . At this time, the outer edge of the fixing frame 33 is fixedly connected to the inner wall of the vibration accommodating cavity 21 .

[0113] The diaphragm sound-generating mechanism 3 of this structure increases the stiffness of the vibration-generating device 32, making it easier to vibrate under the drive of the first variable magnetic field and the second variable magnetic field, and the vibration frequency is increased, thereby improving the high-frequency performance of the diaphragm sound-generating mechanism 3. In addition, there is a gap between the fixed frame 33 and the vibration-generating device 32, and the sound-generating membrane 31 covers the gap and is connected to the vibration-generating device 32 and the fixed frame 33. Therefore, when the receiver is working, the vibration-generating device 32 is subjected to the force of the magnetic field, driving the sound-generating membrane 31 covering the gap to agitate the air to achieve sound, and the sound-generating effect is better.

[0114] In this embodiment, the isolation member 2 is an isolation washer with a certain height, and the isolation washer is made of non-magnetic conductive material.

[0115] In this embodiment, the outer edge of the spacer 2 has a certain thickness to facilitate assembly. Figure 1 As shown, the outer edge of the isolation member 2 is fixedly installed between the first inner layer 4111 and the second inner layer 4211 and between the first electromagnetic coil 412 and the second electromagnetic coil 422, and the first shell 11 and the second shell 12 and the first outer layer 4112 and the second outer layer 4212 are all sealed and fixedly connected. The fixing method can be spot welding or gluing.

[0116] In this embodiment, Figure 3 As shown, the housing 1, the first magnetic generating member 41, the second magnetic generating member 42, and the isolating member 2 are all cylindrical in shape. Compared with a rectangular parallelepiped or other shapes, the volume of the receiver can be very small, thereby improving the portability of the receiver.

[0117] In this embodiment, the housing 1 further includes a tuning hole 16 .

[0118] Example 2

[0119] This embodiment provides a method for assembling the above-mentioned receiver, comprising the following steps:

[0120] S11, winding the first electromagnetic coil 412 between the first inner layer 4111 and the first outer layer 4112 of the first magnetic yoke 411 to form a first magnetic generating member 41;

[0121] S12, winding the second electromagnetic coil 422 between the second inner layer 4211 and the second outer layer 4212 of the second magnetic yoke 421 to form a second magnetic generating member 42;

[0122] S13, assembling the diaphragm sound-generating mechanism 3;

[0123] S21, installing the first magnetic generating element 41 inside the first housing 11 to form a first module;

[0124] S22, installing the second magnetic generating element 42 inside the second housing 12 to form a second module;

[0125] S23, disposing the diaphragm sound-generating mechanism 3 in the vibration accommodating cavity 21 of the isolation member 2 to form a third module;

[0126] S3, assembling and fixing the first module and the second module, and fixing the third module between the first module and the second module.

[0127] It should be noted that steps S11, S12, and S13 are performed simultaneously and do not need to be performed sequentially, so that the first magnetic generating component 41, the second magnetic generating component 42, and the diaphragm sound generating mechanism 3 can be assembled separately at the same time. Steps S21, S22, and S23 are performed simultaneously, and the first module, the second module, and the third module can be assembled separately at the same time, thus realizing modular assembly of the receiver, saving a lot of assembly time, and greatly improving assembly efficiency.

[0128] In addition, the diaphragm sound-generating mechanism 3 is assembled as a whole, which is different from the traditional receiver assembly method in which the sound-generating membrane 31 is installed on the shell 1 and then the sound-generating membrane 31 is connected to the balance armature through a guide pin or a transmission rod. This greatly simplifies the assembly process and improves the assembly efficiency.

[0129] The diaphragm sound generating mechanism 3 includes a vibration generating device 32, the vibration generating device 32 has a fixed magnetic field, and the vibration generating device 32 includes an elastic vibration plate 321 and a magnetic steel 322.

[0130] Step S13 specifically includes: fixing the magnetic steel 322 to one side of the elastic vibration plate 321 by gluing to form the diaphragm sound-generating mechanism 3 , wherein the magnetic steel 322 extends to a position close to the outer edge of the elastic vibration plate 321 .

[0131] As a variation of the design of the vibration generating device 32, the vibration generating device 32 only includes an elastic vibration plate 321, and the elastic vibration plate 321 is made of magnetic material, such as a high-conductivity hard magnetic alloy. In this way, the magnetic steel 322 is omitted, and the magnetic steel 322 and the elastic vibration plate 321 are combined into one, further simplifying the assembly process.

[0132] As a variation of the design of the diaphragm sound-generating mechanism 3, the diaphragm sound-generating mechanism 3 includes a vibration generating device 32 and a sound-generating membrane 31. The vibration generating device 32 includes an elastic vibration plate 321 and a magnetic steel 322.

[0133] Step S13 specifically includes: fixing the magnetic steel 322 to one side of the elastic vibration plate 321 by gluing, and attaching the sounding membrane 31 to the other side of the elastic vibration plate 321 by gluing to form the diaphragm sounding mechanism 3. Similarly, the magnetic steel 322 can be omitted.

[0134] As another variation of the design of the diaphragm sound-generating mechanism 3, the diaphragm sound-generating mechanism 3 includes a fixing frame 33, a vibration generating device 32 and a sound-generating membrane 31. The vibration generating device 32 includes an elastic vibration plate 321 and a magnetic steel 322.

[0135] Step S13 specifically includes: fixing the magnetic steel 322 to one side of the elastic vibration plate 321 by gluing, placing the elastic vibration plate 321 in the hollow through hole 331 of the fixing frame 33, connecting the elastic vibration plate 321 and the fixing frame 33 by a plurality of connecting strips 3211, and then attaching the sound-generating membrane 31 to the elastic vibration plate 321 and the fixing frame 33, and covering the hollow through hole 331, so as to form the diaphragm sound-generating mechanism 3. Similarly, the magnetic steel 322 can be omitted.

[0136] Step S21 specifically includes: gluing the first magnetic yoke 411 sleeved with the first electromagnetic coil 412 onto the inner wall surface of the first housing 11 by gluing.

[0137] Step S22 specifically includes: gluing the second magnetic yoke 421 sleeved with the second electromagnetic coil 422 onto the inner wall surface of the second housing 12 by gluing.

[0138] Step S23 is specifically: placing the diaphragm sound-emitting mechanism 3 in the vibration accommodating cavity 21 in mid-air. At this time, it is necessary to cooperate with step S3. Specifically, the first module and the isolation member 2 are pre-assembled, and then the diaphragm sound-emitting mechanism 3 is placed in the vibration accommodating cavity 21 of the isolation member 2. Since the diaphragm sound-emitting mechanism 3 and the first magnetic generating member 41 have magnetic attraction, the diaphragm sound-emitting mechanism 3 is suspended in the vibration accommodating cavity 21 near the first magnetic generating member 41, and finally the assembly of the second module is completed; or the second module and the isolation member 2 are pre-assembled, and then the diaphragm sound-emitting mechanism 3 is placed in the vibration accommodating cavity 21 of the isolation member 2. The diaphragm sound-emitting mechanism 3 and the second magnetic generating member 42 have magnetic attraction, and the diaphragm sound-emitting mechanism 3 is suspended in the vibration accommodating cavity 21 near the second magnetic generating member 42, and finally the assembly of the first module is completed.

[0139] It should be noted that, except for the last structure, all other variable design schemes of the aforementioned diaphragm sound-generating mechanism 3 are applicable to the above-mentioned assembly method.

[0140] Before step S23 , the method further includes coating the inner wall of the vibration accommodating chamber 21 with a magnetic fluid 211 .

[0141] As a variable design solution, step S23 specifically includes: fixing the outer edge of the diaphragm sound-generating mechanism 3 to the inner wall of the vibration accommodating cavity 21 of the isolation member 2 by spot welding or glue spotting.

[0142] It should be noted that the various variable design schemes of the aforementioned diaphragm sound-emitting mechanism 3 structure are all applicable to the above-mentioned assembly method. For example, when the outer edge of the diaphragm sound-emitting mechanism 3 is an elastic vibration plate 321, the elastic vibration plate 321 is fixed to the inner wall of the vibration accommodating chamber 21; when the outer edge of the diaphragm sound-emitting mechanism 3 is a fixed frame 33, the fixed frame 33 is fixed to the inner wall of the vibration accommodating chamber 21.

[0143] Step S3 specifically comprises: fixing the outer edge of the isolating member 2 having a certain thickness between the first inner layer 4111 and the second inner layer 4211 and between the first electromagnetic coil 412 and the second electromagnetic coil 422 by gluing or spot welding, and the first shell 11 and the second shell 12 and the first outer layer 4112 and the second outer layer 4212 are all sealed and fixedly connected.

[0144] 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: include: A housing (1) comprises a first housing (11) and a second housing (12), wherein the first housing (11) is detachably fastened to the second housing (12) to form an inner cavity; An isolating member (2) is arranged in the inner cavity and divides the inner cavity into a first cavity (14) and a second cavity (15); the isolating member (2) has a vibration accommodating cavity (21) with upper and lower openings; An electromagnetic drive mechanism comprises a first magnetic generating member (41) and a second magnetic generating member (42), wherein the first magnetic generating member (41) provides a first variable magnetic field for the first cavity (14), and the second magnetic generating member (42) provides a second variable magnetic field for the second cavity (15), and the first variable magnetic field and the second variable magnetic field have the same polarity close to the isolation member (2); The diaphragm sound-generating mechanism (3) is arranged in the vibration accommodating chamber (21), has a fixed magnetic field, and can vibrate and generate sound in the vibration accommodating chamber (21) under the drive of the first variable magnetic field and the second variable magnetic field. When not in operation, the diaphragm sound-generating mechanism (3) is suspended at the top or bottom of the vibration accommodating chamber (21) under the magnetic attraction of the first magnetic generating element (41) or the second magnetic generating element (42); when in operation, the diaphragm sound-generating mechanism (3) is driven by the variable magnetic field to vibrate up and down in the vibration accommodating chamber (21), thereby agitating the air on the upper and lower sides to achieve sound generation.

2. The receiver according to claim 1, characterized in that The first magnetic generating element (41) comprises: A first magnetic yoke (411) is fixedly disposed inside the first cavity (14). The first magnetic yoke (411) includes a first inner layer (4111) and a first outer layer (4112); A first electromagnetic coil (412), wound between the first inner layer (4111) and the first outer layer (4112); And / or, the second magnetic generating element (42) comprises: A second magnetic yoke (421) is fixedly disposed inside the second cavity (15), wherein the second magnetic yoke (421) comprises a second inner layer (4211) and a second outer layer (4212); The second electromagnetic coil (422) is wound between the second inner layer (4211) and the second outer layer (4212).

3. The receiver according to claim 1, characterized in that The contact gap between the diaphragm sound-generating mechanism (3) and the inner wall of the vibration accommodating cavity (21) is filled with magnetic fluid (211).

4. The receiver according to claim 1, characterized in that The diaphragm sound-generating mechanism (3) comprises a vibration-generating device (32), and the vibration-generating device (32) has the fixed magnetic field.

5. The receiver according to claim 4, characterized in that: The vibration generating device (32) comprises an elastic vibration plate (321), and the elastic vibration plate (321) is made of magnetic material; Alternatively, the vibration generating device (32) comprises an elastic vibration plate (321) and a magnetic steel (322) fixed on the elastic vibration plate (321), and the elastic vibration plate (321) is made of non-magnetic material.

6. The receiver according to claim 4, characterized in that The diaphragm sound-generating mechanism (3) further comprises: The sound producing membrane (31) is attached to the vibration generating device (32).

7. The receiver according to claim 1, characterized in that The isolating member (2) is an isolating washer with a certain height, and the isolating washer is made of a non-magnetic material.

8. The receiver according to claim 2, characterized in that: The outer edge of the isolation member (2) is fixedly installed between the first inner layer (4111) and the second inner layer (4211) and between the first electromagnetic coil (412) and the second electromagnetic coil (422), and the first shell (11) and the second shell (12) and the first outer layer (4112) and the second outer layer (4212) are all sealed and fixedly connected.

9. The receiver according to claim 1, characterized in that: The shell (1), the first magnetic generating element (41), the second magnetic generating element (42), and the isolation element (2) are all cylindrical in shape.

10. A method for assembling a receiver according to any one of claims 1 to 9, characterized in that: The steps include: Installing the first magnetic generating element (41) inside the first housing (11); Installing the second magnetic generating element (42) inside the second housing (12); The diaphragm sound-generating mechanism (3) is arranged in the vibration accommodation cavity (21) of the isolation member (2); The first shell (11) and the second shell (12) are snapped together to be sealed and connected, and the isolation member (2) is fixed between the first shell (11) and the second shell (12).

11. The receiver assembly method according to claim 10, characterized in that: The specific steps of arranging the diaphragm sound-generating mechanism (3) in the vibration accommodation cavity (21) of the isolation member (2) are: The diaphragm sound-generating mechanism (3) is suspended in the vibration accommodating cavity (21) of the isolation member (2); the diaphragm sound-generating mechanism (3) is suspended at the top or bottom of the vibration accommodating cavity (21) under the magnetic attraction of the first magnetic generating member (41) or the second magnetic generating member (42).

12. The receiver assembly method according to claim 11, characterized in that: Before the step of suspending the diaphragm sound-generating mechanism (3) in the vibration accommodation cavity (21) of the isolation member (2), the method further includes the step of coating a magnetic fluid (211) on the inner wall of the vibration accommodation cavity (21).

13. The receiver assembly method according to claim 10, characterized in that: The first magnetic generating element (41) comprises a first magnetic yoke (411) and a first electromagnetic coil (412), the first magnetic yoke (411) comprises a first inner layer (4111) and a first outer layer (4112), and before the first magnetic generating element (41) is installed inside the first housing (11), the following steps are further included: The first electromagnetic coil (412) is wound between the first inner layer (4111) and the first outer layer (4112) of the first magnetic yoke (411) to form the first magnetic generating member (41).

14. The receiver assembly method according to claim 10, characterized in that: The second magnetic generating member (42) comprises a second magnetic yoke (421) and a second electromagnetic coil (422), the second magnetic yoke (421) comprises a second inner layer (4211) and a second outer layer (4212), and before the second magnetic generating member (42) is installed inside the second housing (12), the following steps are further included: The second electromagnetic coil (422) is wound between the second inner layer (4211) and the second outer layer (4212) of the second magnetic yoke (421) to form the second magnetic generating member (42).

15. The receiver assembly method according to claim 11, characterized in that: The diaphragm sound-generating mechanism (3) comprises a vibration-generating device (32) and a sound-generating membrane (31). Before the step of arranging the diaphragm sound-generating mechanism (3) in the vibration accommodating cavity (21) of the isolation member (2), the step of attaching the sound-generating membrane (31) to the vibration-generating device (32) to form the diaphragm sound-generating mechanism (3) is also included.

16. The receiver assembly method according to claim 10, characterized in that: The steps of fixing the isolation member (2) between the first shell (11) and the second shell (12) are specifically as follows: The outer edge of the isolation member (2) is fixedly installed between the first inner layer (4111) of the first magnetic yoke (411) of the first magnetic generating member (41) and the second inner layer (4211) of the second magnetic yoke (421) of the second magnetic generating member (42), and between the first electromagnetic coil (412) and the second electromagnetic coil (422); the first shell (11) and the second shell (12), and the first outer layer (4112) of the first magnetic yoke (411) of the first magnetic generating member (41) and the second outer layer (4212) of the second magnetic yoke (421) of the second magnetic generating member (42) are all sealed and fixedly connected.

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