Receiver and assembly method thereof

Abstract

The present invention discloses a receiver and an assembly method thereof. The receiver includes a shell, a diaphragm mechanism, an electromagnetic drive mechanism and a magnetic generator. The diaphragm mechanism is arranged in the inner cavity of the shell, and the inner cavity is divided into a sound-generating cavity and an installation cavity. The electromagnetic drive mechanism is arranged in the installation cavity, and includes an armature. The armature has a fixed arm and a free arm connected thereto. An electromagnetic coil is sleeved on the fixed arm, and the free arm is connected to the diaphragm mechanism. The magnetic generator includes a first magnetic generator and a second magnetic generator, which are arranged on both sides of the free arm and are used to cooperate with the electromagnetic coil to drive the free arm to vibrate, thereby driving the diaphragm mechanism to generate sound. The receiver provided by the present invention fixes the diaphragm mechanism and the electromagnetic coil to two different arms of the armature, so that the electromagnetic coil has sufficient installation space without affecting the installation of the diaphragm mechanism, and the magnetic field strength is greatly enhanced, thereby improving its sensitivity. In addition, the assembly method is simple and the assembly efficiency is high.

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 of receivers used in mobile electronic devices and simplifying their assembly process are the goals pursued by many 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 alternating current signal. The electromagnetic field generated by the electromagnetic coil acts 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-arm receiver, the coil is generally placed on the vibrating end of the balanced armature, and then the balanced armature is fixed in the housing. After that, the two ends of the diaphragm are manually fixed on the inner wall of the housing, and the vibrating parts of the diaphragm and the balanced armature are aligned. Then, the diaphragm and the vibrating end of the balanced armature are connected by a guide pin or a transmission rod. The moving-arm receiver in the prior art has the following defects:

[0005] 1. Since the coil and the guide pin or transmission rod connected to the diaphragm are connected to one end of the balanced armature, the coil can only be installed in a local area of ​​the balanced armature's vibrating end. The installation space is limited, so the magnetic field intensity generated by the coil after power is turned on is relatively small, and the vibration amplitude of the balanced armature is relatively weak, which affects the sound volume and sensitivity of the receiver.

[0006] 2. Since the diaphragm needs to be manually fixed to the inner wall of the shell, the assembly process is complicated, the assembly efficiency is low, and it takes a long time. In addition, during later maintenance or performance testing, the entire device needs to be disassembled and assembled, which is very inconvenient.

[0007] 3. Since the diaphragm and the vibrating end of the balanced armature need to be connected through a guide pin or a transmission rod, on the one hand, it makes assembly inconvenient and the assembly efficiency low, and on the other hand, it increases the overall thickness of the receiver, which does not conform to the development trend of miniaturization technology. Summary of the invention

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the technical problems of small magnetic field strength, small receiver sound, low sensitivity caused by small coil installation space in the prior art, as well as complex receiver assembly in the prior art, thereby providing a receiver with a large coil installation space and easy assembly.

[0009] The invention also provides a method for assembling a receiver.

[0010] To this end, the present invention provides a receiver, comprising:

[0011] a housing having an inner cavity;

[0012] A diaphragm mechanism is disposed in the inner cavity and divides the inner cavity into a sound-generating cavity and a mounting cavity;

[0013] An electromagnetic drive mechanism is arranged in the installation cavity, comprising an armature, wherein the armature has a fixed arm and a free arm connected thereto, an electromagnetic coil is sleeved on the fixed arm, and the free arm is connected to the diaphragm mechanism;

[0014] The magnetic generating member, including a first magnetic generating member and a second magnetic generating member, is arranged on both sides of the free arm and is used to cooperate with the electromagnetic coil to drive the free arm to vibrate, thereby driving the diaphragm mechanism to produce sound.

[0015] Preferably, the fixed arm and the free arm are arranged in parallel.

[0016] Preferably, the armature is a U-shaped structure, and the fixed arm and the free arm constitute two side arms of the U-shaped structure.

[0017] Preferably, the diaphragm mechanism comprises:

[0018] A fixing frame, fixedly installed inside the inner cavity, dividing the inner cavity into the sound-generating cavity and the installation cavity, and having a hollow through hole in the middle;

[0019] An elastic vibration plate is located inside the hollow through hole, one end of which is fixedly connected to the fixing frame, and the other end of which is suspended and fixedly connected to the free arm;

[0020] The sound-generating membrane is fixed on the fixing frame, covers the hollow through hole, and is opposite to and connected to the elastic vibration plate.

[0021] Preferably, at least one first countersunk hole is provided on the free arm, and a second countersunk hole opposite to the first countersunk hole is provided on the other end of the elastic vibration plate, and the first countersunk hole and the second countersunk hole are connected by dispensing glue or spot welding.

[0022] Preferably, the free end of the free arm extends out of the free end of the fixed arm by a certain length, and the first magnetic generating component and the second magnetic generating component are located on both sides of the portion where the free end of the free arm extends out of the free end of the fixed arm.

[0023] Preferably, the first magnetic generating member comprises a first permanent magnet;

[0024] And / or, the second magnetic generating element includes a second permanent magnet.

[0025] Preferably, the first magnetic generating member further comprises a first magnetic yoke disposed around the first permanent magnet;

[0026] And / or, the second magnetic generating member further includes a second magnetic yoke disposed around the second permanent magnet.

[0027] Preferably, a notch is formed on the elastic vibration plate, and the notch is opposite to the first permanent magnet and the second permanent magnet.

[0028] Preferably, the shell includes a first shell and a second shell, the first shell has the sound-emitting cavity, the second shell has the mounting cavity, and the diaphragm mechanism is mounted between the first shell and the second shell.

[0029] The present invention also provides a method for assembling the above-mentioned receiver, comprising the following steps:

[0030] Installing the first magnetic generating element into the first housing;

[0031] Installing the second magnetic generating element into the second housing;

[0032] Installing the armature with the electromagnetic coil on the fixed arm into the second housing;

[0033] The diaphragm mechanism is fixedly connected to the free arm of the armature;

[0034] The first shell and the second shell are assembled and fixed, and the diaphragm mechanism is fixed between the first shell and the second shell.

[0035] Preferably, before installing the first magnetic generating member into the first shell, the first permanent magnet is first fixed in the first magnetic yoke, and then the first magnetic yoke is fixed in the first shell;

[0036] And / or; before installing the second magnetic generating component into the second shell, first fix the second permanent magnet in the second magnetic yoke and fix the second magnetic yoke in the second shell.

[0037] Preferably, the step of fixedly connecting the diaphragm mechanism to the free arm is specifically:

[0038] Disposing a first countersunk hole on the free arm;

[0039] A second countersunk hole is provided on the diaphragm mechanism;

[0040] The first countersunk hole and the second countersunk hole are fixedly connected by glue dispensing or spot welding.

[0041] Preferably, the step of fixing the diaphragm mechanism between the first shell and the second shell is specifically: fixing the outer edge of the fixing frame of the diaphragm mechanism to the buckled sealing portion of the first shell and the second shell.

[0042] The technical solution of the present invention has the following advantages:

[0043] 1. In the receiver provided by the present invention, the diaphragm mechanism is connected to the free arm of the armature, and the electromagnetic coil is sleeved on the fixed arm of the armature. Different from the traditional receiver in which the diaphragm mechanism and the electromagnetic coil are fixed to the same end of the armature, the receiver provided by the present invention fixes the diaphragm mechanism and the electromagnetic coil to two different arms of the armature respectively. In this way, without affecting the installation of the diaphragm mechanism, the electromagnetic coil has a large enough installation space and can be sleeved on the entire fixed arm of the armature. In this way, the length of the electromagnetic coil is greatly increased, the magnetic field strength generated by the electromagnetic coil after power is turned on is also greatly enhanced, and the vibration amplitude of the free arm is greatly enhanced, thereby optimizing the sound effect of the receiver and improving the sensitivity; or while ensuring the same magnetic field strength, the height of the electromagnetic coil can be greatly reduced and the thickness of the receiver can be reduced.

[0044] In addition, unlike the traditional receiver in which the sound-producing membrane is manually fixed to the shell and then connected to the armature through a guide pin or a transmission rod, the diaphragm mechanism of the receiver provided by the present invention is arranged as a whole in the inner cavity of the shell. The sound-producing membrane does not need to be connected to the shell, but is pre-fixed in the diaphragm mechanism, which simplifies the internal structure of the receiver, simplifies the assembly process, and improves assembly efficiency.

[0045] 2. In the receiver provided by the present invention, the fixed arm and the free arm of the armature are arranged in parallel. On the one hand, it is convenient to sleeve the electromagnetic coil on the fixed arm and fix the diaphragm mechanism to the free arm; on the other hand, it makes the structure inside the shell more reasonable and miniaturized.

[0046] 3. The receiver provided by the present invention sets the armature as a U-shaped structure, and the two arms of the U-shaped structure are respectively used as a fixed arm and a free arm. In this way, under the premise of separately setting the diaphragm mechanism and the electromagnetic coil, the volume of the armature is minimized, thereby ensuring the miniaturization of the overall volume of the receiver to the greatest extent.

[0047] 4. The receiver provided by the present invention has a diaphragm mechanism including a fixed frame installed in the inner cavity, an elastic vibration plate installed in the hollow through hole of the fixed frame, one end of which is fixedly connected to the fixed frame, and the other end is suspended and fixedly connected to the free arm, and a sound-generating membrane fixed on the fixed frame, covering the hollow through hole and opposite to and connected to the elastic vibration plate. When positive and reverse electricity are alternately supplied to the electromagnetic coil, the electromagnetic coil generates a variable magnetic field. Under the magnetic field force of the variable magnetic field and the static magnetic field generated by the first magnetic generating element and the second magnetic generating element, the free arm of the armature drives the elastic vibration plate connected thereto to vibrate up and down in the hollow through hole of the fixed frame, and then drives the sound-generating membrane to vibrate together, driving the air in the sound-generating cavity to produce sound.

[0048] The diaphragm mechanism of this structure can be installed or disassembled by simply fixing the fixing frame in the inner cavity of the shell or removing the fixing frame from the inner cavity of the shell during assembly or later maintenance or performance testing. The operation is very convenient and can greatly improve the operating efficiency. In addition, the sounding membrane is directly fixedly connected to the elastic vibration plate, so that the elastic vibration plate can directly drive the sounding membrane to vibrate and produce sound, which has high sounding efficiency and improves the sensitivity of the receiver.

[0049] 5. The receiver provided by the present invention connects the first countersunk hole on the armature free arm with the second countersunk hole on the elastic vibration plate by means of glue dispensing or spot welding, thereby realizing a fixed connection between the armature free arm and the elastic vibration plate. In this way, transmission equipment such as a transmission rod or a guide pin is eliminated, which greatly reduces the thickness of the receiver; during the assembly process, it is not necessary to connect the diaphragm mechanism to the armature through a transmission device, which greatly simplifies the assembly process and improves the assembly efficiency; the vibration of the free arm can directly drive the vibration of the diaphragm mechanism, and the transmission is more direct and faster, thereby improving the sensitivity of the receiver. In addition, setting the connection point as a countersunk hole further strengthens the connection strength between the free arm and the elastic vibration plate, thereby improving the reliability of the receiver.

[0050] 6. The receiver provided by the present invention arranges the first magnetic generating component and the second magnetic generating component on both sides of the part where the free end of the free arm extends out of the free end of the fixed arm. Such arrangement enables the electromagnetic coil to be mounted on the entire fixed arm, thereby ensuring the maximum installation space for the electromagnetic coil, while ensuring that the first magnetic generating component and the second magnetic generating component do not interfere with the electromagnetic coil in the vertical direction. Moreover, this arrangement also extends the length of the free arm, which is beneficial to increasing the vibration amplitude of the free arm.

[0051] 7. The receiver provided by the present invention has a first magnetic generating part including a first permanent magnet, and a second magnetic generating part including a second permanent magnet. The first permanent magnet provides a first fixed magnetic field for one side of the armature free arm (sound-generating cavity), and the second permanent magnet provides a second fixed magnetic field for the other side of the armature free arm (installation cavity). The first fixed magnetic field and the second fixed magnetic field have opposite polarities at one end close to the diaphragm mechanism. Under the magnetic field force between the variable magnetic field and the first fixed magnetic field and the second fixed magnetic field, the diaphragm mechanism vibrates and produces sound. This structure can not only provide a fixed magnetic field with a vertical direction and opposite polarities for the sound-generating cavity and the installation cavity, but also further modularize the structure of the receiver, thereby improving assembly efficiency.

[0052] 8. In the receiver provided by the present invention, a first yoke is disposed outside the first permanent magnet, and a second yoke is disposed outside the second permanent magnet. The first yoke is disposed so that the first fixed magnetic field is concentrated in the sound-emitting cavity, thereby enhancing the magnetic field strength of the first fixed magnetic field. Similarly, the second yoke is disposed so that the second fixed magnetic field is concentrated in the installation cavity, thereby enhancing the magnetic field strength of the second fixed magnetic field, thereby maximizing the interaction between the first fixed magnetic field, the second fixed magnetic field and the variable magnetic field, thereby maximizing the sensitivity of the receiver.

[0053] 9. The receiver provided by the present invention has a notch on the elastic vibration plate at a position opposite to the first permanent magnet and the second permanent magnet. Since the elastic vibration plate is located between the first permanent magnet and the free arm of the armature, the interaction between the first fixed magnetic field and the variable magnetic field is weakened to a certain extent. The setting of the notch enables the first fixed magnetic field to directly interact with the variable magnetic field, thereby strengthening the magnetic field force.

[0054] 10. The receiver provided by the present invention has a shell body divided into a first shell body and a second shell body, wherein the first shell body and the second shell body respectively have a sound-generating cavity and a mounting cavity, and a diaphragm mechanism is mounted between the first shell body and the second shell body. The receiver of this structure is composed of three modules: the first shell body and the first magnetic generating element mounted in the sound-generating cavity of the first shell body as the first module; the second shell body and the electromagnetic driving mechanism and the second magnetic generating element mounted in the mounting cavity of the second shell body as the second module; the diaphragm mechanism 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 of the receiver.

[0055] 11. The present invention also provides a method for assembling a receiver, firstly, installing the first magnetic generating component in the first shell to form a first module, and at the same time installing the second magnetic generating component and the armature with an electromagnetic coil on the fixed arm in the second shell to form a second module; the diaphragm mechanism as the third module is fixedly connected to the free arm of the armature; finally, the assembled first module and the second module are assembled, and the diaphragm mechanism is fixed between the first module and the second module 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 mechanism is assembled as a whole, which is different from the assembly method of the traditional receiver in which the sounding membrane is installed on the shell and then the sounding membrane is connected to the balancing armature through a guide pin or a transmission rod. This simplifies the assembly method and improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] 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.

[0057] Figure 1 A front view of the receiver provided by the present invention;

[0058] Figure 2 A side view of a receiver provided by the present invention;

[0059] Figure 3 A partial structural schematic diagram of a balanced armature free arm and a diaphragm mechanism in a receiver provided by the present invention;

[0060] Figure 4 A partial structural schematic diagram of a diaphragm mechanism in a receiver provided by the present invention;

[0061] Description of reference numerals:

[0062] 1-shell; 101-first shell; 102-second shell; 103-sound outlet hole; 104-tuning hole;

[0063] 2-diaphragm mechanism; 201-fixing frame; 2011-hollow through hole; 202-elastic vibration plate; 2021-slot; 2022-second sink hole; 203-sounding membrane;

[0064] 3-Voice cavity;

[0065] 4-Install the cavity;

[0066] 5-electromagnetic drive mechanism; 501-armature; 5011-free arm; 5012-fixed arm; 5013-first countersunk hole; 502-electromagnetic coil.

[0067] 601-first magnetic generating element; 6011-first permanent magnet; 6012-first magnetic yoke;

[0068] 602 - second magnetic generating element; 6021 - second permanent magnet; 6022 - second magnetic yoke. DETAILED DESCRIPTION

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] Example 1

[0074] This embodiment provides a receiver, such as Figure 1-2 As shown, including:

[0075] The shell 1 has an inner cavity, and a sound outlet hole 103 is provided on the shell 1;

[0076] The diaphragm mechanism 2 is arranged in the inner cavity and divides the inner cavity into a sound-generating cavity 3 and a mounting cavity 4;

[0077] The electromagnetic drive mechanism 5 is arranged in the installation cavity 4, and includes an armature 501. The armature 501 has a fixed arm 5012 and a free arm 5011 connected thereto. The fixed arm 5012 is sleeved with an electromagnetic coil 502, and the free arm 5011 is connected to the diaphragm mechanism 2.

[0078] The magnetic generating component includes a first magnetic generating component 601 and a second magnetic generating component 602, which are arranged on both sides of the free arm 5011. The first magnetic generating component 601 is installed in the sound-emitting cavity 3 to provide a first fixed magnetic field for the sound-emitting cavity 3. The second magnetic generating component 602 is installed in the installation cavity 4 to provide a second fixed magnetic field for the installation cavity 4. The first fixed magnetic field and the second fixed magnetic field are both in a vertical direction, and have opposite polarities at one end close to the diaphragm mechanism 2. The first magnetic generating component 601 and the second magnetic generating component 602 are used to cooperate with the electromagnetic coil 502 to drive the free arm 5011 to vibrate, thereby driving the diaphragm mechanism 2 to make sound.

[0079] In the receiver provided in this embodiment, the diaphragm mechanism 2 is connected to the free arm 5011 of the armature 501, and the electromagnetic coil 502 is sleeved on the fixed arm 5012 of the armature 501. Different from the conventional microphone in which the diaphragm mechanism 2 and the electromagnetic coil 502 are fixed to the same end of the armature 501, the receiver provided in this embodiment has the diaphragm mechanism 2 and the electromagnetic coil 502 fixedly connected to two different arms of the armature 501. In this way, without affecting the installation of the diaphragm mechanism 2, the electromagnetic coil 502 has enough installation space and can be sleeved on the entire fixed arm 5012 of the armature 501. In this way, the length of the electromagnetic coil 502 is greatly increased, the magnetic field strength generated by the electromagnetic coil 502 after power is turned on is also greatly enhanced, and the vibration amplitude of the free arm 5011 is greatly enhanced, thereby optimizing the sound effect of the receiver and improving its sensitivity; or while ensuring the same magnetic field strength, the height of the electromagnetic coil 502 can be greatly reduced to reduce the thickness of the receiver.

[0080] In addition, unlike the structure of a traditional receiver in which the sound membrane 203 is manually fixed to the shell 1 and then connected to the armature 501 through a guide pin or a transmission rod, the diaphragm mechanism 2 of the receiver provided by the present invention is arranged as a whole in the inner cavity of the shell 1, and the sound membrane 203 does not need to be connected to the shell 1, but is pre-fixed in the diaphragm mechanism 2, which simplifies the internal structure of the receiver, simplifies the assembly process, and improves the assembly efficiency.

[0081] The specific working process of the receiver in this embodiment is as follows:

[0082] Reference Figure 1, assuming that the first fixed magnetic field provided by the first magnetic generating element 601 has the S pole at the top and the N pole at the bottom, and the second fixed magnetic field provided by the second magnetic generating element 602 has the S pole at the top and the N pole at the bottom, and the electromagnetic coil 502 is supplied with positive electricity, according to the principle of electromagnetic induction, the electromagnetic coil 502 generates a variable magnetic field, assuming that the end of the variable magnetic field close to the free end of the fixed arm 5012 is the N pole, under the magnetization of the variable magnetic field, the free arm 5011 of the armature 501 is the S pole, according to the law of "like poles repel each other, unlike poles attract each other", the variable magnetic field is attracted by the first fixed magnetic field in the sound cavity 3, and at the same time is repelled by the second fixed magnetic field in the installation cavity 4, at this time, the free arm 5011 drives the diaphragm mechanism 2 connected thereto to vibrate toward the side of the sound cavity 3; similarly, when the electromagnetic coil 502 is supplied with reverse electricity, the free arm 5011 drives the diaphragm mechanism 2 to vibrate toward the side of the installation cavity 4. In this way, the diaphragm mechanism 2 vibrates up and down to generate sound.

[0083] Specifically in this embodiment, the housing 1 includes a first housing 101 and a second housing 102, the first housing 101 has a sound cavity 3, the second housing 102 has a mounting cavity 4, and the diaphragm mechanism 2 is mounted between the first housing 101 and the second housing 102. The receiver of this structure is composed of three modules: the first housing 101 and the first magnetic generating element 601 mounted in the sound cavity 3 of the first housing 101, as the first module; the second housing 102 and the electromagnetic driving mechanism 5 and the second magnetic generating element 602 mounted in the mounting cavity 4 of the second housing 102, as the second module; the diaphragm mechanism 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 and improving the assembly efficiency of the receiver.

[0084] In this embodiment, the fixed arm 5012 and the free arm 5011 of the armature 501 are arranged in parallel. On the one hand, it is convenient to put the electromagnetic coil 502 on the fixed arm 5012 and fix the diaphragm mechanism 2 on the free arm 5011; on the other hand, it makes the structure inside the shell 1 more reasonable and miniaturized.

[0085] In this embodiment, Figure 1 As shown, the armature 501 is a U-shaped structure, and the fixed arm 5012 and the free arm 5011 constitute two side arms of the U-shaped structure. The armature 501 is set as a U-shaped structure, and the two arms of the U-shaped structure are used as the fixed arm 5012 and the free arm 5011. In this way, the volume of the armature 501 is minimized while satisfying the premise that the diaphragm mechanism 2 and the electromagnetic coil 502 are separately set, thereby ensuring the miniaturization of the overall volume of the receiver to the greatest extent.

[0086] In this embodiment, Figure 1 , Figure 2 , Figure 4 As shown, the diaphragm mechanism 2 includes:

[0087] The fixing frame 201 is fixedly installed inside the inner cavity, dividing the inner cavity into a sound-generating cavity 3 and a mounting cavity 4, and has a hollow through hole 2011 in the middle;

[0088] The elastic vibration plate 202 is located inside the hollow through hole 2011, one end of which is fixedly connected to the fixed frame 201, and the other end of which is suspended and fixedly connected to the free arm 5011. The elastic vibration plate 202 is generally a reed;

[0089] The sounding membrane 203 is fixed on the fixing frame 201, covers the hollow through hole 2011, and is opposite to and connected to the elastic vibration plate 202. The sounding membrane 203 is glued to the fixing frame 201 and the elastic vibration plate 202, and the sounding membrane 203 is a plastic film.

[0090] When positive and reverse currents are alternately supplied to the electromagnetic coil 502, the electromagnetic coil 502 generates a variable magnetic field. Under the action of the magnetic field force of the variable magnetic field and the static magnetic field generated by the first magnetic generating element 601 and the second magnetic generating element 602, the free arm 5011 of the armature 501 drives the elastic vibration plate 202 connected thereto to vibrate back and forth up and down in the hollow through hole 2011 of the fixed frame 201, and then drives the sound-generating membrane 203 to vibrate together, driving the air in the sound cavity 3 to produce sound.

[0091] The diaphragm mechanism 2 of this structure can be installed or removed by only fixing the fixing frame 201 in the inner cavity of the shell 1 or removing the fixing frame 201 from the inner cavity of the shell 1 during the assembly process or in the later maintenance or performance testing. The operation is very convenient and can greatly improve the operation efficiency. In addition, the pronunciation membrane 203 is directly fixedly connected to the elastic vibration plate 202, so that the elastic vibration plate 202 can directly drive the pronunciation membrane 203 to vibrate and produce sound, which has high sound production efficiency and improves the sensitivity of the receiver.

[0092] In this embodiment, the outer edge of the fixed frame 201 is fixed at the snap-fit ​​seal of the first shell 101 and the second shell 102. For example, spot welding or gluing can be used, or a snap-fit ​​portion can be set on the first shell 101 and the second shell 102, so that the outer edge of the fixed frame 201 cooperates with the snap-fit ​​portion to be snap-fitted and fixed.

[0093] In this embodiment, Figure 3 As shown, at least one first countersunk hole 5013 is provided on the free arm 5011, and a second countersunk hole 2022 opposite to the first countersunk hole 5013 is provided on the other end of the elastic vibration plate 202. The first countersunk hole 5013 and the second countersunk hole 2022 are connected by dispensing glue or spot welding.

[0094] The first countersunk hole 5013 on the free arm 5011 of the armature 501 is connected to the second countersunk hole 2022 on the elastic vibration plate 202 by dispensing or spot welding, so as to realize the fixed connection between the free arm 5011 of the armature 501 and the elastic vibration plate 202. In this way, the transmission equipment such as the transmission rod or the guide pin is omitted, which greatly reduces the thickness of the receiver; during the assembly process, it is not necessary to connect the diaphragm mechanism 2 with the armature 501 through the transmission equipment, which greatly simplifies the assembly process and improves the assembly efficiency; the vibration of the free arm 5011 can directly drive the vibration of the diaphragm mechanism 2, the transmission is more direct, the transmission speed is faster, and the sensitivity of the receiver is improved. In addition, setting the connection point as a countersunk hole further strengthens the connection strength between the free arm 5011 and the elastic vibration plate 202, and improves the reliability of the receiver.

[0095] In this embodiment, the free end of the free arm 5011 extends a certain length from the free end of the fixed arm 5012, and the first magnetic generating component 601 and the second magnetic generating component 602 are located on both sides of the portion where the free end of the free arm 5011 extends from the free end of the fixed arm 5012. This arrangement enables the electromagnetic coil 502 to be sleeved on the entire fixed arm 5012, ensuring the maximum installation space for the electromagnetic coil 502, while ensuring that the first magnetic generating component 601 and the second magnetic generating component 602 do not interfere with the electromagnetic coil 502 in the vertical direction; and this arrangement also extends the length of the free arm 5011, which is conducive to increasing the vibration amplitude of the free arm 5011.

[0096] In this embodiment, the first magnetic generating member 601 includes a first permanent magnet 6011, and the second magnetic generating member 602 includes a second permanent magnet 6021. The first permanent magnet 6011 provides a first fixed magnetic field for one side (sound-generating cavity 3) of the free arm 5011 of the armature 501, and the second permanent magnet 6021 provides a second fixed magnetic field for the other side (installation cavity 4) of the free arm 5011 of the armature 501. The first fixed magnetic field and the second fixed magnetic field have opposite polarities at one end close to the diaphragm mechanism 2. Under the magnetic field force between the variable magnetic field and the first fixed magnetic field and the second fixed magnetic field, the diaphragm mechanism 2 vibrates and generates sound. This structure can not only provide a fixed magnetic field with a vertical direction and opposite polarities for the sound-generating cavity 3 and the installation cavity 4, but also further modularize the structure of the receiver, thereby improving assembly efficiency.

[0097] As a variation of the design of the magnetic generating element, the first magnetic generating element 601 and the second magnetic generating element 602 are a whole permanent magnet with opposite polarities at both ends, which also falls within the protection scope of the present invention.

[0098] As another variation design of the magnetic generating element, only the first permanent magnet 6011 is provided in the sound-generating cavity 3, or only the second permanent magnet 6021 is provided in the installation cavity 4, both of which can achieve the purpose of the present invention and fall within the protection scope of the present invention.

[0099] In this embodiment, the first magnetic generating member 601 further includes a first magnetic yoke 6012 disposed around the first permanent magnet 6011, and the second magnetic generating member 602 further includes a second magnetic yoke 6022 disposed around the second permanent magnet 6021. The first magnetic yoke 6012 is disposed so that the first fixed magnetic field is concentrated in the sound-emitting cavity 3, thereby enhancing the magnetic field strength of the first fixed magnetic field. Similarly, the second magnetic yoke 6022 is disposed so that the second fixed magnetic field is concentrated in the installation cavity 4, thereby enhancing the magnetic field strength of the second fixed magnetic field, thereby maximizing the interaction between the first fixed magnetic field, the second fixed magnetic field and the variable magnetic field, thereby maximizing the sensitivity of the receiver.

[0100] As a variation of the design of the magnetic generating element, only disposing the first yoke 6012 around the first permanent magnet 6011 or only disposing the second yoke 6022 around the second permanent magnet 6021 both fall within the protection scope of the present invention.

[0101] In this embodiment, the distance between the upper surface of the free arm 5011 and the lower surface of the first permanent magnet 6011 is equal to the distance between the lower surface of the free arm 5011 and the upper surface of the second permanent magnet 6021. In this way, the free arm 5011 is subjected to a more uniform force, thereby ensuring the sound effect of the receiver.

[0102] In this embodiment, a notch 2021 is provided on the elastic vibration plate 202, and the notch 2021 is opposite to the first permanent magnet 6011 and the second permanent magnet 6021. Since the elastic vibration plate 202 is located between the first permanent magnet 6011 and the free arm 5011 of the armature 501, the interaction between the first fixed magnetic field and the variable magnetic field is weakened to a certain extent, and the setting of the notch 2021 enables the first fixed magnetic field to directly interact with the variable magnetic field, thereby strengthening the magnetic field force.

[0103] In this embodiment, a tuning hole 104 is further provided on the housing 1 .

[0104] Example 2

[0105] This embodiment also provides a method for assembling the receiver as described in Embodiment 1, comprising the following steps:

[0106] S11, fixing the first permanent magnet 6011 in the first magnetic yoke 6012 to form a first magnetic generating element 601;

[0107] S12, fixing the second permanent magnet 6021 in the second magnetic yoke 6022 to form a second magnetic generating element 602;

[0108] S13, sleeve the electromagnetic coil 502 on the fixed arm 5012 of the armature 501 to form the electromagnetic drive mechanism 5;

[0109] S21, installing the first magnetic generating element 601 into the first housing 101 to form a first module;

[0110] S22, installing the second magnetic generating element 602 and the electromagnetic driving mechanism 5 into the second housing 102 to form a second module;

[0111] S23, fixing one end of the elastic vibration plate 202 to the hollow through hole 2011 of the fixing frame 201, and suspending the other end of the elastic vibration plate 202 in the hollow through hole 2011, and gluing the sounding membrane 203 to the fixing frame 201 and the elastic vibration plate 202 to form a vibration membrane mechanism 2 as a third module;

[0112] S3, fixing the diaphragm mechanism 2 to the free arm 5011 of the armature 501;

[0113] S4, assembling and fixing the first module and the second module, and fixing the third module between the first module and the second module.

[0114] It should be noted that steps S11, S12, and S13 are performed simultaneously and do not need to be performed in sequence. In this way, the first magnetic generating component 601, the second magnetic generating component 602, and the electromagnetic drive mechanism 5 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. Therefore, a lot of assembly time is saved and the assembly efficiency is greatly improved.

[0115] The assembly method of the receiver provided in this embodiment realizes modular assembly, saves a lot of assembly time, and improves assembly efficiency. In addition, the diaphragm mechanism 2 is assembled as a whole, which is different from the assembly method of the traditional receiver in which the pronunciation membrane 203 is manually installed on the housing 1 and then the pronunciation membrane 203 is connected to the balance armature through a guide pin or a transmission rod. The assembly is more convenient, reduces the assembly difficulty, and improves the assembly efficiency. In addition, the diaphragm mechanism 2 and the electromagnetic coil 502 are fixedly connected to different arms of the armature 501, so that the electromagnetic coil 502 has enough installation space without affecting the installation of the diaphragm mechanism 2. It can be set on the entire fixed arm 5012 of the armature 501. In this way, the length of the electromagnetic coil 502 is greatly increased, the magnetic field strength generated by the electromagnetic coil 502 after power is turned on is also greatly enhanced, and the vibration amplitude of the free arm 5011 is greatly enhanced, thereby optimizing the sound effect of the receiver and improving its sensitivity.

[0116] As a design variation, the first magnetic yoke 6012 may not be provided in step S11 , and the second magnetic yoke 6022 may not be provided in step S12 .

[0117] As a variation design, any one of steps S11 and S12 may be omitted, that is, only one of the first magnetic generating element 601 and the second magnetic generating element 602 is required, which can achieve the purpose of the present invention and also falls within the protection scope of the present invention.

[0118] Step S21 specifically includes: gluing the first magnetic yoke 6012 coated with the first permanent magnet 6011 onto the inner wall surface of the first shell 101 by gluing.

[0119] Step S22 is specifically as follows: glue the second yoke 6022 coated with the second permanent magnet 6021 to the inner wall surface of the second shell 102, glue the electromagnetic coil 502 mounted on the fixed arm 5012 of the armature 501 to the inner wall surface of the second shell 102, and ensure that the second magnetic generating element 602 is located on the side of the part where the free end of the free arm 5011 extends out of the free end of the fixed arm 5012.

[0120] Step S3 specifically includes: setting a first countersunk hole 5013 on the free arm 5011 of the armature 501, setting a second countersunk hole 2022 on the elastic vibration plate 202 of the diaphragm mechanism 2, and then fixing the first countersunk hole 5013 and the second countersunk hole 2022 by glue spotting or spot welding.

[0121] Step S4 is specifically as follows: fixing the outer edge of the fixed frame 201 in the diaphragm mechanism 2 at the snap-fit ​​seal between the first shell 101 and the second shell 102, which may be done by spot welding or gluing, or by providing snap-fit ​​parts on the first shell 101 and the second shell 102, so that the outer edge of the fixed frame 201 cooperates with the snap-fit ​​parts for snap-fitting and fixing.

[0122] 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) having an inner cavity; A diaphragm mechanism (2) is arranged in the inner cavity and divides the inner cavity into a sound-generating cavity (3) and a mounting cavity (4); An electromagnetic drive mechanism (5) is arranged in the installation cavity (4), comprising an armature (501), the armature (501) having a fixed arm (5012) and a free arm (5011) connected thereto, the fixed arm (5012) being sleeved with an electromagnetic coil (502), the free arm (5011) being connected to the diaphragm mechanism (2), and the free arm (5011) being provided with at least one first countersunk hole (5013); A magnetic generating component, comprising a first magnetic generating component (601) and a second magnetic generating component (602), arranged on both sides of the free arm (5011), and used to cooperate with the electromagnetic coil (502) to drive the free arm (5011) to vibrate, thereby driving the diaphragm mechanism (2) to produce sound; The diaphragm mechanism (2) comprises: A fixing frame (201), fixedly mounted inside the inner cavity, dividing the inner cavity into the sound-generating cavity (3) and the mounting cavity (4), and having a hollow through hole (2011) in the middle; An elastic vibration plate (202) is located inside the hollow through hole (2011), one end of which is fixedly connected to the fixed frame (201), and the other end of which is suspended and provided with a second countersunk hole (2022) opposite to the first countersunk hole (5013), the first countersunk hole (5013) and the second countersunk hole (2022) being connected by glue dispensing or spot welding, and the first countersunk hole (5013) and the second countersunk hole (2022) being provided with through holes; The sound-generating membrane (203) is fixed on the fixing frame (201), covers the hollow through hole (2011), and is opposite to and connected to the elastic vibration plate (202).

2. The receiver according to claim 1, characterized in that The fixed arm (5012) and the free arm (5011) are arranged in parallel.

3. The receiver according to claim 2, characterized in that: The armature (501) is a U-shaped structure, and the fixed arm (5012) and the free arm (5011) constitute two side arms of the U-shaped structure.

4. The receiver according to any one of claims 1 to 3, characterized in that: The free end of the free arm (5011) extends a certain length beyond the free end of the fixed arm (5012), and the first magnetic generating element (601) and the second magnetic generating element (602) are located on both sides of the portion where the free end of the free arm (5011) extends beyond the free end of the fixed arm (5012).

5. The receiver according to claim 4, characterized in that: The first magnetic generating element (601) comprises a first permanent magnet (6011); And / or, the second magnetic generating element (602) includes a second permanent magnet (6021).

6. The receiver according to claim 5, characterized in that The first magnetic generating member (601) further comprises a first magnetic yoke (6012) arranged around the first permanent magnet (6011); And / or, the second magnetic generating element (602) further includes a second magnetic yoke (6022) arranged around the second permanent magnet (6021).

7. The receiver according to claim 5 or 6, characterized in that: The elastic vibration plate (202) is provided with a notch (2021), and the notch (2021) is located opposite to the first permanent magnet (6011) and the second permanent magnet (6021).

8. The receiver according to claim 1, characterized in that The shell (1) comprises a first shell (101) and a second shell (102); the first shell (101) has the sound-emitting cavity (3); the second shell (102) has the mounting cavity (4); and the diaphragm mechanism (2) is mounted between the first shell (101) and the second shell (102).

9. A method for assembling a receiver, suitable for assembling a receiver according to any one of claims 1 to 8, characterized in that: The following steps are involved: Installing the first magnetic generating element (601) into the interior of the first housing (101); Installing the second magnetic generating element (602) into the interior of the second housing (102); The armature (501) having the electromagnetic coil (502) sleeved on the fixed arm (5012) is installed into the interior of the second housing (102); The diaphragm mechanism (2) is fixedly connected to the free arm (5011) of the armature (501); Assembling and fixing the first shell (101) and the second shell (102), and fixing the diaphragm mechanism (2) between the first shell (101) and the second shell (102); The specific steps of fixedly connecting the diaphragm mechanism (2) and the free arm (5011) are: A first countersunk hole (5013) is provided on the free arm (5011); A second countersunk hole (2022) is provided on the diaphragm mechanism (2); The first countersunk hole (5013) and the second countersunk hole (2022) are fixedly connected by means of glue dispensing or spot welding.

10. The assembly method according to claim 9, characterized in that: Before installing the first magnetic generating element (601) into the first housing (101), first fix the first permanent magnet (6011) in the first magnetic yoke (6012), and then fix the first magnetic yoke (6012) in the first housing (101); And / or; before installing the second magnetic generating element (602) into the second shell (102), first fix the second permanent magnet (6021) in the second magnetic yoke (6022), and fix the second magnetic yoke (6022) in the second shell (102).

11. The assembly method according to claim 9, characterized in that: The specific step of fixing the diaphragm mechanism (2) between the first shell (101) and the second shell (102) is: fixing the outer edge of the fixing frame (201) of the diaphragm mechanism (2) to the buckled sealing part of the first shell (101) and the second shell (102).

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