A receiver and its assembly method

Abstract

This invention discloses a receiver and its assembly method. The receiver includes: a housing with a cavity, one end of which has an opening; and a motor assembly disposed within the cavity. The motor assembly includes a spring, which includes a fixing part mounted on the opening. The fixing part and the housing form a magnetic circuit. This invention solves the problem of complex edge-mount structures in the prior art, simplifies the receiver structure, and enables automated assembly of the receiver.

Description

Technical Field

[0001] This invention relates to the field of sound-to-electric conversion, and in particular to a receiver and its assembly method. Background Technology

[0002] A balanced armature receiver is a sound-to-electric transducer, typically used as a sound-generating device to convert electrical signals into sound. It is mainly used in headphones, hearing aids, wearable devices that can produce sound, and the sound-generating units of electronic products that can produce sound.

[0003] Existing technologies typically use a front guard as the carrier of the magnetic circuit, fixing the magnet to it. Common front guards are U-shaped, a relatively complex part with very high dimensional accuracy requirements. However, controlling the dimensional accuracy of front guards is difficult, and unstable dimensions often lead to scrapped incoming materials or even semi-finished products, resulting in waste of materials and labor, and hindering cost control. Furthermore, due to the complex structure of the front guard, the receiver assembly process requires manual installation of magnets into the front guard, which is difficult and not easy to automate, thus hindering the development of enterprises and the industry. Summary of the Invention

[0004] The purpose of this invention is to provide a receiver and its assembly method, which simplifies the receiver structure and enables automated assembly.

[0005] To address the aforementioned technical problems, this invention provides a receiver, comprising:

[0006] The housing has a cavity, and one end of the cavity has an opening;

[0007] A motor assembly is disposed within the cavity. The motor assembly includes a reed, and the reed includes a fixing portion mounted on the opening. The fixing portion and the housing surround each other to form a magnetic circuit.

[0008] Preferably, the motor assembly further includes a magnetic circuit assembly disposed within the magnetic conductive circuit, and the reed further includes a vibrating part disposed opposite to the fixed part, the vibrating part being movably disposed within the magnetic circuit assembly.

[0009] Preferably, the magnetic circuit assembly includes a first magnet disposed on the fixed part near the vibrating part and a second magnet disposed on the housing near the vibrating part, with the vibrating part movably passing between the first magnet and the second magnet.

[0010] Preferably, the magnetic circuit assembly further includes a first magnetic conductive element connected to the first magnet and a second magnetic conductive element connected to the second magnet.

[0011] Preferably, the first magnetic conductive element is connected between the fixing part and the first magnet, and the second magnetic conductive element is connected between the housing and the second magnet.

[0012] Preferably, the first magnetic conductive element is connected between the fixed part and the first magnet, and the second magnetic conductive element is connected to the end of the second magnet near the vibrating part.

[0013] Preferably, the first magnetic conductive element is connected to one end of the first magnet near the vibrating part, and the second magnetic conductive element is connected between the second magnet and the housing.

[0014] Preferably, the first magnetic conductive element is connected to the end of the first magnet near the vibrating part, and the second magnetic conductive element is connected to the end of the second magnet near the vibrating part.

[0015] The first and second magnetic conductive elements are configured as a stepped structure including one or more steps, with the protrusions of the steps facing the vibrating part.

[0016] The recessed part of the step is provided with an impact-resistant guard.

[0017] The first and second magnetic conductive elements are configured as flat plates.

[0018] Preferably, the magnetic circuit assembly is provided with an impact-resistant guard at one end near the vibrating part, and the vibrating part is movably inserted between the impact-resistant guards.

[0019] Preferably, the reed and the housing are made of a magnetically conductive material.

[0020] On the other hand, the present invention also proposes a method for assembling a receiver, comprising the following steps:

[0021] S1: Secure the second magnet to the bottom of the housing;

[0022] S2: Fit the coil onto the vibrating part of the reed;

[0023] S3: Fix the first magnet to the fixing part of the spring;

[0024] S4: Fix the coil to the fixing part of the spring, and the vibrating part of the spring is movably inserted into the coil;

[0025] S5: Install the fixing part onto the opening of the housing, keeping the first magnet and the second magnet facing each other, and the vibrating part is movably inserted between the first magnet and the second magnet;

[0026] S6: Fix the drive component between the vibrating part and the diaphragm assembly;

[0027] S7: Install the diaphragm assembly into the cover body, close the cover body and the housing and seal.

[0028] Furthermore, step S1 also includes:

[0029] The second magnet is fixed to the second magnetic conductive element, and the second magnetic conductive element is fixed to the bottom of the housing; or

[0030] The second magnetic conductor is fixed to the second magnet, and the second magnet is fixed to the bottom of the housing.

[0031] Furthermore, step S3 also includes:

[0032] The first magnet is fixed to the first magnetic conductive element, and the first magnetic conductive element is fixed to the fixing part of the spring; or

[0033] The first magnetic conductor is fixed to the first magnet, and the first magnet is fixed to the bottom of the housing.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] This invention adopts a ferrule-less design. The magnetic conduction function of the ferrule is realized by a spring mounted on the opening of the housing and forming a magnetic circuit around the side wall and bottom of the housing. This simplifies the receiver structure, facilitates quality control, reduces waste, and lowers raw material costs. The simplified receiver structure reduces the difficulty of assembly, makes it easy to automate production, and can significantly improve production efficiency.

[0036] In a preferred embodiment, a magnetic guide element is added to the magnetic guide circuit. This enhances the magnetic conductivity and allows for easier alignment of the magnetic gap and the vibrating part by adjusting the magnetic gap through the magnetic guide element.

[0037] In a preferred embodiment, the magnetic conductor is configured in a stepped shape to guide and control the magnetic circuit. Different stepped designs are used to adjust the force on the reed, thereby adjusting the product's output. This allows for greater output and better acoustic performance without changing the product's external dimensions.

[0038] In a preferred embodiment, an impact-resistant guard is provided between the magnetic circuit assembly and the vibrating part of the reed, which limits the range of motion of the vibrating part, thereby improving the impact resistance of the product. Attached Figure Description

[0039] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and are not intended to specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances. In the drawings:

[0040] Figure 1 This is an exploded view of the receiver in this invention;

[0041] Figure 2 This is a cross-sectional view of the receiver in this invention;

[0042] Figure 3 This is a cross-sectional view of the receiver in this invention from another perspective;

[0043] Figure 4 This is an assembly diagram of the housing and motor assembly in this invention;

[0044] Figure 5 This is a schematic diagram of the receiver structure in this invention;

[0045] Figure 6 This is a cross-sectional view of the receiver equipped with an impact-resistant protective component in this invention.

[0046] Figure 7 This is an exploded view of the receiver in Embodiment 1 of the present invention;

[0047] Figure 8 This is a cross-sectional view of the receiver in Embodiment 1 of the present invention;

[0048] Figure 9 This is a cross-sectional view of the receiver equipped with an impact-resistant protective component in Embodiment 1 of the present invention;

[0049] Figure 10 This is a cross-sectional view of the receiver in Embodiment 2 of the present invention;

[0050] Figure 11 This is a cross-sectional view of the receiver equipped with an impact-resistant protective component in Embodiment 2 of the present invention;

[0051] Figure 12 This is a cross-sectional view of the receiver in Embodiment 3 of the present invention;

[0052] Figure 13 This is a cross-sectional view of the receiver equipped with an impact-resistant protective component in Embodiment 3 of the present invention;

[0053] Figure 14 This is a cross-sectional view of the receiver in Embodiment 4 of the present invention;

[0054] Figure 15This is a cross-sectional view of the receiver equipped with an impact-resistant protective component in Embodiment 4 of the present invention;

[0055] Figure 16 This is a cross-sectional view of the receiver in Embodiment 5 of the present invention;

[0056] Figure 17 This is a cross-sectional view of the receiver equipped with an impact-resistant protective component in Embodiment 5 of the present invention;

[0057] Figure 18 This is a schematic diagram of the magnetic conductive component in Embodiment 5 of the present invention;

[0058] Figure 19 This is a simulation diagram of the spring torque of the receiver equipped with a stepped magnetic conductor in Embodiment 5 of the present invention;

[0059] Figure 20 This is a simulation diagram of the spring torque of the receiver equipped with a flat magnetic conductive element in Embodiment 5 of the present invention;

[0060] As shown in the figure:

[0061] 11. Housing; 111. Cavity; 112. First sidewall; 113. Second sidewall; 114. Third sidewall; 115. Fourth sidewall; 12. Cover; 121. Clearance groove; 13. Front cavity; 14. Rear cavity; 15. Sound outlet; 2. Diaphragm assembly; 21. Fixing frame; 22. Vibrating plate; 23. Diaphragm; 3. Motor assembly; 31. Reed; 311. Bending part; 312. Fixing part; 313. Vibrating part; 32. Driving component; 33. Coil; 341. First magnet; 342. Second magnet; 343. First magnetic conductor; 344. Second magnetic conductor; 35. Impact-resistant protective component; 36. Step; 361. Protrusion; 362. Recess; 4. Terminal. Detailed Implementation

[0062] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0063] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0065] like Figures 1 to 6 As shown, a receiver corresponding to a preferred embodiment of the present invention includes a housing, a diaphragm assembly 2 installed in the housing, and a motor assembly 3 connected to the diaphragm assembly 2 to drive the diaphragm assembly 2 to vibrate.

[0066] like Figure 1 , Figure 2 and Figure 4 As shown, the outer casing includes a housing 11 and a cover 12, which can be closed to form a cavity for housing the diaphragm assembly 2 and the motor assembly 3. The diaphragm assembly 2 is installed inside the cover 12, dividing the cavity into a front cavity 13 and a rear cavity 14. A sound outlet 15 is provided on the cover 12 to connect the front cavity 13 to the outside, allowing sound waves generated in the front cavity to be transmitted. Preferably, the sound outlet 15 can be provided on the four side walls of the cover 12. The housing 11 is made of a magnetically permeable material, preferably a high-permeability material, and its magnetic permeability is improved by magnetic annealing. A cavity 111 is disposed inside the housing 11, with an opening at one end. The motor assembly 3 is disposed within the cavity 111.

[0067] like Figure 2As shown, the diaphragm assembly 2 includes a fixed frame 21, a vibrating plate 22, and a membrane 23. The edge of the fixed frame 21 is fixed within the cover 12 and sealed with adhesive. The vibrating plate 22 is disposed in the hollow portion of the fixed frame 21 and hinged to it. The membrane 23 covers the entire fixed frame 21 and the vibrating plate 22. Specifically, there is an overlap area of ​​approximately 0.05 mm between one end of the vibrating plate 22 and the fixed frame 21, which is preferably bonded with adhesive to form a hinge. Except for the hinge area, the vibrating plate 22 has gaps of 0.1-0.2 mm wide around its perimeter with the fixed frame 21, facilitating its vertical vibration. While the membrane 23 covers the entire fixed frame 21 and the vibrating plate 22, it also forms an arched structure, called a runway, in the gap between the fixed frame 21 and the vibrating plate 22 to achieve the oscillation amplitude. The vibrating plate 22 has a through hole at the end away from the hinge for the drive component 32 to pass through. The vibrating plate 22 and the drive component 32 are fixed by adhesive, thereby realizing the vibration of the diaphragm assembly 2 driven by the motor assembly.

[0068] like Figures 1 to 3 As shown, the motor assembly 3 includes a reed 31, a drive element 32, a coil 33, and a magnetic circuit assembly. The reed 31 is made of a magnetically permeable material, preferably a high-permeability material, and undergoes magnetic annealing to enhance its magnetic permeability. The reed 31 includes a bent portion 311 and a fixing portion 312 and a vibrating portion 313 connected to both ends of the bent portion 311. The fixing portion 312 and the vibrating portion 313 are arranged opposite each other, preferably parallel. The fixing portion 312 is mounted on the opening of the housing 11, and the fixing portion 312, the side wall of the housing 11, and the bottom wall surround each other to form a magnetic circuit, replacing the original "U"-shaped edge iron structure, simplifying the product structure and reducing the difficulty of assembly. The vibrating portion 313 is movably inserted within the magnetic circuit.

[0069] Specifically, the housing 11 includes a first sidewall 112, a second sidewall 113, a third sidewall 114, and a fourth sidewall 115. The first sidewall 112 and the third sidewall 114 are arranged opposite each other, and the second sidewall 113 and the fourth sidewall 115 are arranged opposite each other. The fixing part 312 is mounted between the second sidewall 113 and the fourth sidewall 115, and its edge is preferably aligned with the edge of the second sidewall 113 and the edge of the fourth sidewall 115. The magnetic conductive circuit is formed by the fixing part 312, the second sidewall 113, the third sidewall 114, and the bottom wall of the housing 11. In order to facilitate the closing of the housing 11 and the cover 12, the cover 12 is provided with a clearance groove 121 for the fixing part 312 to be embedded. The reason for choosing to create the clearance groove 121 on the cover 12 instead of the housing 11 is that the magnetic gap of the magnetic circuit assembly, i.e., the distance between the first magnet 341 and the second magnet 342, is a key factor affecting the acoustic performance of the moving iron receiver. To manufacture a high-quality product, the size of the magnetic gap needs to be precisely controlled. When the fixing part 312 is mounted on the opening of the housing 11, the distance between the first magnet 341 and the second magnet 342 can be directly controlled by the depth of the housing and the dimensions of the magnetic components or other parts. If the clearance groove is created on the housing, the magnetic gap needs to be controlled by the depth of the clearance groove to the bottom of the housing and the dimensions of each part. However, the existing stamping process is difficult to guarantee its accuracy and consistency, which not only brings difficulties to the production process but also affects the yield rate. The housing 11 and the cover 12 can be fixed by welding, and the perimeter and seams are sealed with adhesive.

[0070] Furthermore, the magnetic circuit assembly is disposed within the magnetic conductive circuit, and the two are fixed by welding or adhesive. The vibrating part 313 is movably disposed within the magnetic circuit assembly. The magnetic circuit assembly includes a first magnet 341 disposed at one end of the fixed part 312 near the vibrating part 313, and a second magnet 342 disposed at one end of the housing 11 near the vibrating part 313. The first magnet 341 and the second magnet 342 are disposed opposite to each other. This relative disposal can be understood as the orthographic projections of the first magnet 341 and the second magnet 342 at least partially overlapping. More preferably, the first magnet 341 and the second magnet 342 are aligned, that is, the orthographic projections of the first magnet 341 and the second magnet 342 completely overlap. In this embodiment, the magnet is preferably a magnet, configured in a plate shape. The vibrating part 313 is suspended between the first magnet 341 and the second magnet 342 and can vibrate up and down between the first magnet 341 and the second magnet 342. Preferably, the magnetic gap between the vibrating part 313 and the magnetic circuit assembly is centrally located. This central location means that the vibrating part 313 is situated between the first magnet 341 and the second magnet 342, symmetrically dividing the gap between them. At least one end of the vibrating part 313 away from the bending part 311 is exposed outside the magnetic circuit assembly, particularly outside the first magnet 341, for fixing the driving member 32. In this embodiment, the driving member 32 is preferably a driving rod, with one end fixed to the vibrating part 313 and the other end fixed to the vibrating plate 22.

[0071] like Figure 6 As shown, an impact-resistant guard 35 is provided at one end of the magnetic circuit assembly near the vibrating part 313 to improve the product's impact resistance. The impact-resistant guard 35 is made of a non-magnetic material, which can be metal or non-metal. The shape of the impact-resistant guard 35 is not limited and can be rectangular, circular, elliptical, polygonal, etc. Preferably, the impact-resistant guard 35 is configured as a plate, just like the magnet. In this embodiment, it can be understood that the impact-resistant guard 35 is fixed to one end of the first magnet 341 near the vibrating part 313 by welding or adhesive, and to one end of the second magnet 342 near the vibrating part 313. When the impact-resistant guard 35 is provided, the vibrating part 313 can still vibrate up and down between the impact-resistant guards 35. By limiting the range of motion of the vibrating part 313 by the impact-resistant guard 35, the vibrating part 313 will not undergo too much displacement and plastic deformation when falling, thereby improving the product's impact resistance.

[0072] The coil 33 is fixed to the fixing part 312 by adhesive bonding and is located on the side of the magnetic circuit assembly away from the driving member 32. The vibrating part 313 is movably inserted into the coil 33. The leads of the coil 33 are led out through through holes formed in the first sidewall 112. A terminal 4 is detachably covered on the first sidewall. The terminal is formed by soldering the leads of the coil 33 to the pads on the PCB board. The PCB board is fixed and sealed with adhesive.

[0073] The present invention also proposes a method for assembling the above-mentioned receiver, comprising the following steps:

[0074] S1: The second magnet 342 is fixed to the bottom of the housing 11 by welding or adhesive. Preferably, the impact-resistant protective piece 35 can be fixed to the second magnet 342 first, and then the second magnet 342 can be fixed to the bottom of the housing 11.

[0075] S2: The coil 33 is sleeved on the vibrating part 313 of the reed 31, and the vibrating part 313 of the reed 31 is movably inserted into the coil 33;

[0076] S3: The first magnet 341 is fixed to the fixing part 312 of the spring 31 by welding or adhesive. Preferably, the impact-resistant protective member 35 can be fixed to the first magnet 341 first, and then the first magnet 341 can be fixed to the fixing part 312 of the spring 31.

[0077] S4: The coil 33 is fixed to the fixing part 312 of the spring 31 by means of adhesive, and the vibrating part 313 of the spring 31 is movably inserted into the coil 33;

[0078] S5: The fixing part 312 is installed onto the opening of the housing 11 by welding. During welding, the edge of the fixing part 312 is aligned with the edge of the housing 11, and the first magnet 341 and the second magnet 342 are positioned opposite each other. The vibrating part 313 is movably inserted between the first magnet 341 and the second magnet 342.

[0079] S6: The drive component 32 is fixed between the vibrating part 313 and the diaphragm assembly 2 by welding;

[0080] S7: Install the diaphragm assembly 2 into the cover 12, seal the four sides with adhesive, and weld the cover 12 and the housing 11 together, and seal the joint with adhesive.

[0081] The fixing and sealing methods used in the above steps, such as welding and adhesive, are only preferred methods. In the actual assembly process, the fixing and sealing methods can be selected and changed according to the actual situation. As long as the same fixing and sealing effect can be achieved without affecting the structure and performance of the receiver, they can be used.

[0082] Example 1:

[0083] like Figures 7 to 9 As shown, in this embodiment, a new magnetic circuit component structure is proposed and applied to the above-mentioned receiver.

[0084] Specifically, in addition to the first magnet 341 and the second magnet 342 mentioned above, the magnetic circuit assembly also includes a first magnetic guide 343 connected to the first magnet 341 and a second magnetic guide 344 connected to the second magnet 342. The first magnetic guide 343 and the second magnetic guide 344 are configured as flat plates. In this embodiment, the first magnetic guide 343 is connected between the fixing part 312 and the first magnet 341, and the second magnetic guide 344 is connected between the housing 11 and the second magnet 342. By adding the first magnetic guide 343 and the second magnetic guide 344, on the one hand, the magnetic conductivity can be increased based on the spring 31 and the housing 11; on the other hand, the position of the first magnet 341 and the second magnet 342 in the Z-axis direction can be adjusted by the thickness of the first magnetic guide 343 and the second magnetic guide 344, thereby adjusting the magnetic gap to achieve the alignment of the magnetic gap of the magnetic circuit assembly with the vibration part 313.

[0085] In this embodiment, an impact-resistant protective component 35 can be optionally provided (e.g., Figure 9 As shown), you can also choose not to set it (e.g. Figure 8 (As shown). When the shock-resistant guard 35 is provided, at least two shock-resistant guards 35 are configured in a magnetic circuit assembly. One of them is installed at the end of the first magnet 341 near the vibrating part 313, and the other is installed at the end of the second magnet 342 near the vibrating part 313. Sufficient space is left between the two shock-resistant guards 35 for the vibrating part 313 to vibrate up and down.

[0086] The receiver in this embodiment can be assembled using the assembly method described above. However, due to the change in the magnetic circuit component structure, slight modifications are needed when performing steps S1 and S3, specifically:

[0087] S1: The second magnet 342 is first fixed to the second magnetic conductor 344 by welding or adhesive, and then the second magnetic conductor 344 is fixed to the bottom of the housing 11. Preferably, before fixing it to the bottom of the housing, the impact-resistant protective member 35 can be fixed to the second magnet 342.

[0088] S3: First, fix the first magnet 341 to the first magnetic conductor 343 by welding or adhesive, and then fix the first magnetic conductor 343 to the fixing part 312 of the spring 31. Preferably, before fixing it to the fixing part 312 of the spring 31, the impact-resistant protective member 35 can also be fixed to the first magnet 341.

[0089] The rest of the assembly methods are the same, so I won't go into too much detail here.

[0090] Example 2:

[0091] like Figure 10 and Figure 11 As shown, in this embodiment, a new magnetic circuit component structure is proposed and applied to the above-mentioned receiver.

[0092] Specifically, the difference between this embodiment and Embodiment 1 lies in the installation position of the second magnetic conductor 344. In this embodiment, the first magnetic conductor 343 is still connected between the fixing part 312 and the first magnet 341, and the second magnetic conductor 344 is connected to the end of the second magnet 342 near the vibrating part 313. This arrangement of the magnetic conductor increases magnetic conductivity and allows adjustment of the magnetic gap in the magnetic circuit assembly by varying the thickness of the magnetic conductor, thus ensuring that the magnetic gap of the magnetic circuit assembly is aligned with the vibrating part 313.

[0093] In this embodiment, an impact-resistant protective component 35 can be optionally provided (e.g., Figure 11 As shown), you can also choose not to set it (e.g. Figure 10 (As shown). When the shock-resistant guard 35 is provided, at least two shock-resistant guards 35 are configured in a magnetic circuit assembly. One of them is installed at the end of the first magnet 341 near the vibrating part 313, and the other is installed at the end of the second magnetic conductor 344 near the vibrating part 313. Sufficient space is left between the two shock-resistant guards 35 for the vibrating part 313 to vibrate up and down.

[0094] The receiver in this embodiment can be assembled using the assembly method described in Embodiment 1. However, due to the change in the magnetic circuit component structure, a slight modification is required when performing step S1. Specifically:

[0095] S1: The second magnetic conductive element 344 is first fixed to the second magnet 342 by welding or adhesive, and then the second magnet 342 is fixed to the bottom of the housing 11. Preferably, before fixing it to the bottom of the housing, the impact-resistant protective element 35 can be fixed to the second magnetic conductive element 344.

[0096] The rest of the assembly methods are the same, so I won't go into too much detail here.

[0097] Example 3:

[0098] like Figure 12 and Figure 13 As shown, in this embodiment, a new magnetic circuit component structure is proposed and applied to the above-mentioned receiver.

[0099] Specifically, the difference between this embodiment and Embodiment 1 lies in the installation position of the first magnetic conductive element 343. In this embodiment, the first magnetic conductive element 343 is connected to the end of the first magnet 341 near the vibrating part 313, while the second magnetic conductive element 344 remains connected between the second magnet 342 and the housing 11. This arrangement of the magnetic conductive elements not only increases the magnetic conductivity but also allows for adjustment of the magnetic gap in the magnetic circuit assembly by varying the thickness of the magnetic conductive element, thus ensuring that the magnetic gap of the magnetic circuit assembly is aligned with the vibrating part 313.

[0100] In this embodiment, an impact-resistant protective component 35 can be optionally provided (e.g., Figure 13 As shown), you can also choose not to set it (e.g. Figure 12 (As shown). When the shock-resistant guard 35 is provided, at least two shock-resistant guards 35 are configured in a magnetic circuit assembly. One of them is installed at the end of the first magnetic conductor 343 near the vibrating part 313, and the other is installed at the end of the second magnet 342 near the vibrating part 313. Sufficient space is left between the two shock-resistant guards 35 for the vibrating part 313 to vibrate up and down.

[0101] The receiver in this embodiment can be assembled using the assembly method described in Embodiment 1. However, due to the change in the magnetic circuit component structure, a slight modification is required when performing step S3, specifically:

[0102] S3: First, fix the first magnetic conductive element 343 to the first magnet 341 by welding or adhesive, and then fix the first magnet 341 to the fixing part 312 of the spring 31. Preferably, before fixing it to the fixing part 312 of the spring 31, the impact-resistant protective element 35 can also be fixed to the first magnetic conductive element 343.

[0103] The rest of the assembly methods are the same, so I won't go into too much detail here.

[0104] Example 4:

[0105] like Figure 14 and Figure 15 As shown, in this embodiment, a new magnetic circuit component structure is proposed and applied to the above-mentioned receiver.

[0106] Specifically, the difference between this embodiment and Embodiment 1 lies in the installation positions of the first magnetic conductive element 343 and the second magnetic conductive element 344. In this embodiment, the first magnetic conductive element 343 is connected to the end of the first magnet 341 near the vibrating part 313, and the second magnetic conductive element 344 is connected to the end of the second magnet 342 near the vibrating part 313. This arrangement of the magnetic conductive elements increases the magnetic conductivity and allows for adjustment of the magnetic gap in the magnetic circuit assembly by adjusting the thickness of the magnetic conductive elements, thus achieving alignment between the magnetic gap of the magnetic circuit assembly and the vibrating part 313.

[0107] In this embodiment, an impact-resistant protective component 35 can be optionally provided (e.g., Figure 15 As shown), you can also choose not to set it (e.g. Figure 14 (As shown). When the shock-resistant guard 35 is provided, at least two shock-resistant guards 35 are configured in a magnetic circuit assembly. One of them is installed at the end of the first magnetic conductor 343 near the vibrating part 313, and the other is installed at the end of the second magnetic conductor 344 near the vibrating part 313. Sufficient space is left between the two shock-resistant guards 35 for the vibrating part 313 to vibrate up and down.

[0108] The receiver in this embodiment can be assembled using the assembly method described in Embodiment 1. However, due to the change in the magnetic circuit component structure, slight modifications are required when performing steps S1 and S3, specifically:

[0109] S1: The second magnetic conductive element 344 is first fixed to the second magnet 342 by welding or adhesive, and then the second magnet 342 is fixed to the bottom of the housing 11. Preferably, before fixing it to the bottom of the housing, the impact-resistant protective element 35 can be fixed to the second magnetic conductive element 344.

[0110] S3: First, fix the first magnetic conductive element 343 to the first magnet 341 by welding or adhesive, and then fix the first magnet 341 to the fixing part 312 of the spring 31. Preferably, before fixing it to the fixing part 312 of the spring 31, the impact-resistant protective element 35 can also be fixed to the first magnetic conductive element 343.

[0111] The rest of the assembly methods are the same, so I won't go into too much detail here.

[0112] Example 5:

[0113] like Figure 16 and Figure 17 As shown, in this embodiment, a new magnetic circuit component structure is proposed and applied to the above-mentioned receiver.

[0114] Specifically, the difference between this embodiment and Embodiment 4 lies in the shapes of the first magnetic conductive element 343 and the second magnetic conductive element 344, as shown in... Figure 18As shown, in this embodiment, the first magnetic conductor 343 and the second magnetic conductor 344 are configured in a stepped shape, including one or more steps 36. The stepped shape can be understood as the magnetic conductor including at least two parts of different thicknesses, namely a protrusion 361 and a recess 362. The protrusion 361 and the recess 362 of the step 36 are arranged on the same side, with the protrusion 361 facing the vibrating part 313. The side opposite to the protrusion 361 is smoothly connected to the end of the first magnet 341 near the vibrating part 313, or to the end of the second magnet 342 near the vibrating part 313. The protrusion 361 of the step 36 can be arranged in the middle or on the side as needed to adjust the force-bearing area. When the protrusion 361 is arranged on the side near the end of the driving member 32, the reed 31 can obtain a larger torque when subjected to the same force, effectively adjusting the product output. This allows for greater output and better acoustic performance without changing the product's external dimensions.

[0115] like Figure 19 and 20 As shown, Figure 19 The simulation results of the reed torque (i.e., the reed torque simulation diagram of the receiver with the stepped magnetic conductor) are obtained when the magnetic conductor is configured in a stepped shape, especially when the protrusion 361 is set on the side near one end of the drive member 32. Figure 20 The simulation results show the reed torque when the magnetic conductor is configured as a flat plate (i.e., the reed torque simulation diagram of the receiver with a flat magnetic conductor). It can be clearly seen from the figure that, under the same force, the reed torque of the flat magnetic conductor is 1.3898e-3, while the reed torque of the stepped magnetic conductor is 1.7443e-3, which is a significant increase of 25%, resulting in greater output and better acoustic performance for the product.

[0116] Furthermore, the cross-section of step 36 can be a conventional rectangle, a trapezoid, or other polygons; the step shape of the magnetic conductor can be integral or separate, such as using two or more plate-shaped magnetic conductors stacked together, or using two or more plate-shaped magnetic conductors of different thicknesses placed side by side.

[0117] In this embodiment, an impact-resistant protective component 35 can be optionally provided (e.g., Figure 19 As shown), you can also choose not to set it (e.g. Figure 18 (As shown). When the impact-resistant guard 35 is provided, at least two impact-resistant guards 35 are configured in a magnetic circuit assembly. The impact-resistant guards 35 are preferably reasonably arranged in the recess 362 of the step 36, and sufficient space is left between the two impact-resistant guards 35 for the vibration part 313 to vibrate up and down.

[0118] The receiver in this embodiment can be assembled using the assembly method described in Embodiment 4, which will not be elaborated further here.

[0119] The receiver of this invention adopts a front guardless design. A magnetic circuit is formed by a spring mounted on the opening of the housing and the inner wall of the housing, achieving the magnetic conduction function of a front guard. This simplifies the receiver structure, facilitates quality control, reduces waste, and lowers raw material costs. Existing processes are easily implemented without affecting receiver performance, improving acoustic performance and stability. Eliminating the front guard structure facilitates product miniaturization, overcoming the size limitations of existing technologies and meeting diverse application needs. The simplified structure reduces assembly difficulty, facilitates automated production, and significantly improves production efficiency.

[0120] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A receiver, characterized in that, include: The housing (11) is provided with a cavity (111), and one end of the cavity (111) is provided with an opening; A motor assembly (3) is disposed in the cavity (111). The motor assembly (3) includes a spring (31). The spring (31) includes a fixing part (312) mounted on the opening. The fixing part (312) and the housing (11) surround each other to form a magnetic circuit. The motor assembly (3) further includes a magnetic circuit assembly disposed in the magnetic circuit, and the reed (31) further includes a vibrating part (313) disposed opposite to the fixing part (312), the vibrating part (313) being movably disposed within the magnetic circuit assembly; The magnetic circuit assembly includes a first magnet (341) disposed on the fixed part (312) near the vibrating part (313) and a second magnet (342) disposed on the housing (11) near the vibrating part (313). The vibrating part (313) is movably disposed between the first magnet (341) and the second magnet (342). The vibrating part (313) symmetrically divides the gap between the first magnet (341) and the second magnet (342). The magnetic circuit assembly further includes a first magnetic conductor (343) connected to the first magnet (341) and a second magnetic conductor (344) connected to the second magnet (342). The first magnetic conductive element is connected to one end of the first magnet (341) near the vibrating part (313), and the second magnetic conductive element (344) is connected to one end of the second magnet (342) near the vibrating part (313); The first magnetic conductor (343) and the second magnetic conductor (344) are configured as a step shape including one or more steps (36), the protrusions (361) of the steps (36) being disposed toward the vibrating part (313).

2. The receiver according to claim 1, characterized in that, The recess (362) of the step (36) is provided with an impact-resistant guard (35).

3. The receiver according to claim 1, characterized in that, An impact-resistant guard (35) is provided at one end of the magnetic circuit assembly near the vibration part (313), and the vibration part (313) is movably inserted between the impact-resistant guards (35).

4. The receiver according to claim 1, characterized in that, The reed (31) and the housing (11) are made of magnetically conductive material.

5. A method for assembling a receiver as described in any one of claims 1-4, characterized in that, Includes the following steps: S1: Fix the second magnet (342) to the bottom of the housing (11); S2: Place the coil (33) on the vibrating part (313) of the reed (31). S3: Fix the first magnet (341) to the fixing part (312) of the reed (31); S4: Fix the coil (33) to the fixing part (312) of the reed (31), and the vibrating part (313) of the reed is movably inserted into the coil (33); S5: Install the fixing part (312) onto the opening of the housing (11), keeping the first magnet (341) and the second magnet (342) opposite to each other, and the vibration part (313) is movably inserted between the first magnet (341) and the second magnet (342); S6: Fix the drive unit (32) between the vibrating part (313) and the diaphragm assembly (2); S7: Install the diaphragm assembly (2) into the cover (12), close the cover (12) and the housing (11) and seal.

6. The assembly method of the receiver according to claim 5, characterized in that, Step S1 further includes: The second magnetic conductor (344) is fixed to the second magnet (342), and the second magnet (342) is fixed to the bottom of the housing (11).

7. The assembly method of the receiver according to claim 5, characterized in that, Step S3 further includes: The first magnetic conductor (343) is fixed to the first magnet (341), and the first magnet (341) is fixed to the fixing part (312) of the spring (31).

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