A diaphragm receiver

Abstract

The present invention provides a diaphragm receiver, comprising a housing, a diaphragm mechanism, and a drive mechanism. The housing has a hollow cavity, and the diaphragm mechanism is disposed within the hollow cavity. The diaphragm mechanism includes a vibration plate disposed on the housing, and at least one sealing membrane sealed and fixed to the housing and dividing the hollow cavity into a non-connected mounting cavity and at least one sound cavity. The drive mechanism is disposed within the hollow cavity and is used to drive the vibration plate to reciprocate along a first direction. The sealing membrane has a sound segment connected to the vibration plate and a connecting segment bent along the first direction and disposed on the sound segment. In the first direction, the elastic deformation of the portion of the connecting segment close to the sound segment is greater than the elastic deformation of other portions of the connecting segment. When the vibration plate vibrates in the first direction, the portion with the larger elastic deformation is pushed to move, thereby reducing the vibration resistance, effectively reducing the energy loss of the vibration, and ensuring the vibration amplitude.

Description

Technical Field

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

[0002] A receiver is an electroacoustic device that converts electrical audio signals into sound signals. It is widely used in communication devices such as mobile phones, landlines, and hearing aids to reproduce audio (voice, music). Receivers primarily utilize electromagnetic induction and the piezoelectric effect. There are also capacitive headphones that utilize capacitors, while receivers that utilize electromagnetic induction primarily include moving-arm and dynamic-coil receivers.

[0003] The existing receiver structure includes a shell, a sound membrane, a fixed frame, a vibration plate and an electromagnetic drive mechanism. The fixed frame is L-shaped as a whole, and the fixed frame divides the inner cavity of the shell into a sound cavity and an installation cavity. The vertical part of the L-shaped frame is located in the vibration direction of the vibration plate, and a vibration space is left along the vibration direction at the connection between the vertical part and the horizontal part. The vibration space is connected to the inner cavity of the horizontal part of the frame. The sound membrane is bent and glued to the surface of the L-shaped fixed frame. The sound membrane located at the vertical part of the L-shaped fixed frame is tensioned and covers the vibration space. The sound membrane located at the horizontal part of the L-shaped fixed frame is fixedly connected to the vibration plate. The electromagnetic drive mechanism drives the vibration plate to vibrate up and down along the vibration direction, thereby driving the sound membrane to vibrate up and down in the inner cavity of the horizontal part of the frame.

[0004] However, the sound membrane located in the vertical part of the L-shaped frame in the above-mentioned receiver is tensioned and covers the vibration space. When the vibration plate drives the sound membrane in the horizontal part to vibrate upward, the vibration plate needs to overcome the elastic force of the tensioned sound membrane itself. Under the condition of the same magnetic flux, the amplitude is reduced, resulting in low vibration efficiency and affecting the sound quality of the receiver. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that the vibration resistance of the vibration plate in the existing receiver is large, which affects the vibration effect.

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

[0007] a housing having a hollow cavity;

[0008] a diaphragm mechanism disposed in the hollow cavity; the diaphragm mechanism comprises a vibration plate disposed on the housing, and at least one sealing membrane sealed and fixed to the housing and dividing the hollow cavity into a non-connected mounting cavity and at least one sound cavity;

[0009] a driving mechanism, disposed in the hollow cavity, for driving the vibration plate to vibrate back and forth in a first direction;

[0010] The sealing membrane has a sound segment connected to the vibration plate and a connecting segment bent along the first direction and arranged on the sound segment; in the first direction, the elastic deformation of the part of the connecting segment close to the sound segment is greater than the elastic deformation of other parts of the connecting segment.

[0011] Preferably, in the above-mentioned diaphragm receiver, the portion of the connecting section connected to the sounding section with a large elastic deformation is a corrugated section suitable for stretching and contracting along the first direction.

[0012] Preferably, the diaphragm receiver further includes

[0013] A partition is fixedly mounted on the outer shell; the partition is located in the hollow cavity and a vibration space is reserved between one end portion of the vibration plate close to the pronunciation segment and the pronunciation segment in the vibration direction of the vibration plate; the connecting segment is fixed on the partition and a portion of the connecting segment with a large elastic deformation amount is located in the vibration space.

[0014] Preferably, in the above-mentioned diaphragm receiver, the vibration plate is made of soft magnetic material, and has a fixed portion fixed to the shell and at least one vibration portion suspended in the hollow cavity; the driving mechanism drives the vibration portion to perform the reciprocating vibration.

[0015] Preferably, the diaphragm receiver further comprises a diaphragm disposed between the vibration portion and the sound producing section of the sealing membrane and connected to the vibration portion and the sound producing section respectively.

[0016] Preferably, in the above-mentioned diaphragm receiver, the diaphragm and the vibration plate are integrally formed.

[0017] Preferably, the diaphragm receiver further includes

[0018] at least one fixing frame, sealingly mounted on the inner wall surface of the housing;

[0019] The vibrating portion and the fixing frame are located on the same horizontal plane and extend into the fixing frame through an opening at one end of the fixing frame, and the sealing film is installed on the fixing frame in a one-to-one correspondence and covers the inner cavity of the fixing frame;

[0020] A vibration gap is reserved between the outer periphery of the vibration part and the inner wall surface of the fixed frame; the vibration plate is suitable for driving the sound-producing section of the sealing membrane to perform the reciprocating vibration in the inner cavity of the fixed frame.

[0021] Preferably, the above diaphragm receiver further includes a partition fixedly installed on the housing; the partition is located in the hollow cavity and is generally in a U-shaped; the side walls at both ends of the opening form opposite support frames; both ends of the opening of the U-shaped are respectively fixed on one of the support frames, and the inner cavity of the opening of the U-shaped forms a vibration space.

[0022] Preferably, in the above diaphragm receiver, the sounding section of any one of the sealing films is located at the inner cavity edge of the corresponding fixed frame and reserves a vibration margin in the first direction.

[0023] Preferably, in the above diaphragm receiver, at least one magnetic isolation slit is formed on the vibration plate.

[0024] Preferably, the above diaphragm receiver, the driving mechanism includes

[0025] At least one permanent magnet disposed on either side of any one of the vibrating parts; and a coil sleeved on the vibration plate and near the fixed part; any one of the permanent magnets is disposed opposite to the vibrating part;

[0026] A vibration gap is reserved between any one of the permanent magnets and the adjacent vibrating part, and between the coil and the vibrating part; the coil is disposed in the installation cavity.

[0027] Preferably, the above diaphragm receiver,

[0028] One permanent magnet is disposed on each side of any one of the vibrating parts; the adjacent permanent magnets are disposed opposite to each other and the opposite surfaces have opposite polarities.

[0029] Preferably, the above diaphragm receiver,

[0030] The housing includes an upper housing surrounded by a first bottom surface and side walls, and a lower housing surrounded by a second bottom surface and side walls. The upper housing is buckled on the lower housing to enclose the hollow cavity.

[0031] The technical solution of the present invention has the following advantages:

[0032] 1. The present invention provides a diaphragm receiver, comprising a housing having a hollow cavity, and a diaphragm mechanism disposed within the hollow cavity. The diaphragm mechanism includes a vibrating plate mounted on the housing, and at least one sealing membrane sealed and fixed to the housing, dividing the hollow cavity into a non-connected mounting cavity and at least one sound cavity. A driving mechanism is disposed within the hollow cavity, configured to drive the vibrating plate to reciprocate along a first direction. The sealing membrane includes a sounding segment connected to the vibrating plate and a connecting segment bent along the first direction and disposed on the sounding segment. In the first direction, the elastic deformation of the portion of the connecting segment proximal to the sounding segment is greater than the elastic deformation of the remaining portions of the connecting segment. When the vibrating plate vibrates in the first direction, the portion with the greater elastic deformation is pushed to move, thereby reducing vibration resistance, effectively reducing vibration energy loss, and ensuring vibration amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 The structure of the diaphragm receiver of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 2 The structure of the diaphragm receiver of the present invention is shown in FIG. Figure 2 ;

[0036] Figure 3 Schematic diagram of the structure of the partition in the diaphragm receiver of the present invention;

[0037] Figure 4 Schematic diagram of the vibration plate structure in the diaphragm receiver of the present invention.

[0038] Description of reference numerals:

[0039] 1-housing; 10-sound cavity; 11-upper housing; 110-sound hole; 12-lower housing; 120-positioning hole;

[0040] 2-vibration plate; 20-installation cavity; 21-magnetic isolation gap;

[0041] 3-sealing membrane; 31-connecting segment; 32-pronunciation segment;

[0042] 4-partition plate; 5-fixed frame; 51-support frame;

[0043] 6-driving mechanism; 61-permanent magnet; 62-coil; 7-positioning rod. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] Example 1

[0048] This embodiment provides a diaphragm receiver, such as Figure 1As shown, it includes a housing 1, a diaphragm mechanism, and a drive mechanism 6. The housing 1 includes an upper shell 11 formed by a first bottom surface and side walls, and a lower shell 12 formed by a second bottom surface and side walls. The upper shell 11 is buckled onto the lower shell 12 to form a hollow cavity with a hollow interior. The diaphragm mechanism includes a vibration plate 2 and at least one sealing membrane 3. The vibration plate 2 has a fixed portion and a vibrating portion. The side walls of the upper shell 11 and the lower shell 12 are buckled and fixed to the two end surfaces of the fixed portion, so that the vibrating portion of the vibration plate 2 is suspended and horizontally arranged in the hollow cavity. The vibrating portion of the vibration plate 2 is suitable for vibrating up and down along a first direction in the hollow cavity. In this embodiment, a single sealing membrane 3 is provided. It comprises a sound-producing section 32 positioned above the vibrating portion and a connecting section 31 bent along a first direction and fixed to the inner wall of the housing. The sealing membrane 3 divides the hollow cavity into a non-connected sound cavity 10 and a mounting cavity 20. In this embodiment, the connecting section 31 and the sound-producing section 32 form an L-shape, with the sound-producing section 32 positioned horizontally and the connecting section 31 positioned vertically. A sound hole 110 is provided on the side wall of the housing 1 corresponding to the sound cavity 10, communicating with the outside world.

[0049] A diaphragm is provided between the sound section 32 of the sealing membrane 3 and the vibration part of the vibration plate 2. The two end surfaces of the diaphragm are respectively fixedly connected to the sound section 32 and the vibration part. In this embodiment, the diaphragm and the vibration plate 2 are integrally formed. Figure 4 As shown, two magnetic isolation gaps 21 are opened on the vibration part of the vibration plate 2 located at the sound section 32. The magnetic field is fully concentrated in the middle of the vibration plate 2 through the magnetic isolation gaps 21. The opening of the magnetic isolation gaps 21 can reduce the weight of the vibration plate 2 itself to a certain extent, making the vibration of the vibration plate 2 more sensitive.

[0050] like Figure 4 As shown, the fixed frame 5 and the pronunciation segment 32 are arranged in a one-to-one correspondence. In this embodiment, one fixed frame 5 is provided and sealed on the inner wall surface of the outer shell 1. The fixed frame 5 and the vibration plate 2 are located in the same horizontal plane. The vibration part of the vibration plate 2 connected to the pronunciation segment 32 extends into the inner cavity of the fixed frame 5 from the opening of the fixed frame 5 in the hollow cavity. A vibration gap is reserved between the outer periphery of the vibration part and the inner wall surface of the fixed frame 5. The pronunciation segment 32 of the sealing membrane 3 is fixed on the vibration part and covers the inner cavity of the fixed frame 5, and the pronunciation segment 32 of the sealing membrane 3 is located at the edge of the inner cavity of the fixed frame 5 to reserve a vibration margin along the first direction (not shown in the figure).

[0051] During installation, first install the vibration plate 2 and the fixing frame 5 on the side wall of the lower shell 12 or the upper shell 11, completely cover the inner cavity of the shell with the sealing film 3 and adhere it to the side wall of the shell, and then Figure 4 As shown, the sealing film 3 outside the fixing frame 5 and the vibration part is removed to ensure the sealing and accuracy of the installation of the sound section 32 of the sealing film 3.

[0052] like Figure 3As shown, in this embodiment, the partition 4 is generally in a U-shape, and the inner cavity of the U-shape faces the vibrating plate 2 to form a vibration space, as Figure 4 shown. Opposite ends of the opening of the fixed frame 5 form opposite support frames 51 extending into the cavity. Two ends of the U-shaped frame of the partition 4 are respectively fixed on one support frame 51. The opening of the U-shaped inner cavity is communicated with the opening of the fixed frame 5, that is, the vibration space is communicated with the inner cavity of the fixed frame 5. The connecting section 31 of the sealing film 3 is laid on the surface of the partition 4. The elastic deformation amount of the part of the connecting section 31 close to the sounding section 32 is greater than that of other parts of the connecting section 31. In this embodiment, the connecting section 31 and the sounding section 32 are made of the same material. The connecting section 31 located in the vibration space of the partition 4 is arranged in a corrugated section. The corrugated section is adapted to expand and contract along the first direction. The bottom end of the corrugated section is adhesively sealed and fixed to the sounding section 32.

[0053] As Figure 1 shown, in this embodiment, the driving mechanism 6 adopts an electromagnetic driving mechanism. The electromagnetic driving mechanism includes a coil 62 and at least one permanent magnet 61. The coil 62 is arranged in the installation cavity 20 and sleeved on the vibrating plate 2 close to the fixing part. One permanent magnet �1 is respectively arranged on both sides of the vibrating part in the sound cavity 10 and the installation cavity 20. The permanent magnet 61 is arranged opposite to the vibrating plate 2. The end faces of the two opposite permanent magnets 61 have opposite polarities. At this time, the vibrating plate 2 is made of a soft magnetic material. After the coil 62 is energized with alternating current, the vibrating plate 2 is easily magnetized. Under the interaction of the alternating magnetic field and the permanent magnet 61, the vibrating part drives the sounding section 32 of the sealing film 3 to vibrate reciprocally in the hollow cavity.

[0054] As Figure 1 shown, a positioning hole 120 is opened on the lower housing 12 opposite to the partition 4 and the connecting section 31 of the sealing film 3. When the connecting section 31 and the sounding section 32 are adhesively assembled, the positioning rod 7 passes through the positioning hole 120 into the installation cavity 20 and presses against the vibrating plate 2 to facilitate the adhesive fixing of the connecting section 31 and the sounding section 32. As Figure 2 shown, after the installation is completed, the positioning rod 7 is taken out, and the positioning hole 120 is sealed with a sealing material.

[0055] As the first alternative implementation manner of Embodiment 1, the partition 4 may not be provided, and the periphery of the connecting section 31 of the sealing film 3 is respectively fixed on the inner wall surface of the housing and the sounding section 32.

[0056] As the second alternative implementation manner of Embodiment 1, the driving mechanism 6 may adopt a piezoelectric vibrator. The piezoelectric vibrator is connected to the vibrating plate 2 in the installation cavity 20. When an alternating current is applied to the piezoelectric vibrator, the piezoelectric vibrator itself will vibrate reciprocally, thereby driving the vibrating plate 2 to vibrate.

[0057] As a third alternative implementation of Example 1, the connecting section 31 can be composed of two materials with different elastic deformation amounts. The elastic deformation amount of the material located in the vibration space of the partition 4 is greater than the elastic deformation amount of the material adhered to the surface of the partition 4. It can also reduce the resistance of the vibration plate 2 when the vibration plate 2 vibrates up and down along the first direction, thereby ensuring the amplitude of the vibration plate 2.

[0058] Example 2

[0059] This embodiment provides a diaphragm receiver. Compared with the structure of the receiver provided in Example 1, the difference is that the connecting section 31 and the pronunciation section 32 may not be arranged perpendicular to each other, and the connecting section 31 and the pronunciation section 32 may be at any angle of 70 degrees, 80 degrees, 100 degrees or 110 degrees, as long as the elastic deformation of the connection between the connecting section 31 and the pronunciation section 32 along the vibration direction is greater than the elastic deformation of other parts of the connecting section 31.

[0060] Example 3

[0061] This embodiment provides a diaphragm receiver. Compared to the receiver structure provided in Embodiments 1 or 2, the difference lies in that the sound cavity 10 of Embodiments 1 or 2 is a first sound cavity, and a second sound cavity is separated from the first sound cavity of Embodiments 1 or 2 by a second sealing membrane. A second sound hole is provided on the wall surface of the upper shell 11 corresponding to the second sound cavity. A permanent magnet 61 is located within the first sound cavity. The second sealing membrane also has a horizontal sound-producing section and a connecting section bent along a first direction. The second sealing membrane is sealed and fixed to the inner wall surface of the upper shell 11. Similarly, the elastic deformation of the connecting section of the second sealing membrane at the connection with the sound-producing section along the vibration direction is greater than the elastic deformation of other parts of the connecting section. When the vibrating portion vibrates, the air in the first sound cavity is compressed or expanded, resulting in a change in air pressure. Driven by the changing air pressure, the second sealing membrane vibrates, causing the second sound cavity to produce sound.

[0062] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A diaphragm receiver, characterized in that: Comprising: A housing (1) with a hollow cavity; A diaphragm mechanism disposed within the hollow cavity; the diaphragm mechanism includes a vibrating plate (2) provided on a housing, and at least one sealing film (3) hermetically fixed on the housing (1) and dividing the hollow cavity into a non-connected mounting cavity (20) and at least one sound cavity (10); The vibrating plate (2) is made of a soft magnetic material and has a fixed portion fixed on the housing (1) and at least one vibrating portion suspended within the hollow cavity; A driving mechanism (6) disposed within the hollow cavity for driving the vibrating plate (2) to reciprocate along a first direction; The sealing film (3) has a sounding segment (32) connected to the vibrating plate (2) and a connecting segment (31) bent along the first direction on the sounding segment (32); in the first direction, the elastic deformation amount of the portion of the connecting segment (31) closer to the sounding segment (32) is greater than that of other portions of the connecting segment (31); the connecting segment (31) and the sounding segment (32) are in an L shape; The diaphragm receiver further includes at least one fixing frame (5) hermetically installed on the inner wall surface of the housing (1); The vibrating portion and the fixing frame (5) are in the same horizontal plane and extend into the fixing frame (5) through an open end of the fixing frame (5), and the sealing film (3) is installed on the fixing frame (5) correspondingly and covers the inner cavity of the fixing frame (5); A vibration gap is reserved between the outer periphery of the vibrating portion and the inner wall surface of the fixing frame (5); the vibrating plate (2) is adapted to drive the sounding segment (32) of the sealing film (3) to reciprocate within the inner cavity of the fixing frame (5).

2. The diaphragm receiver according to claim 1, wherein The portion of the connecting segment (31) with a large elastic deformation amount connecting the sounding segment (32) is a corrugated segment adapted to expand and contract along the first direction.

3. The diaphragm receiver according to claim 1 or 2, characterized in that Further comprising A partition plate (4) fixedly installed on the housing (1); the partition plate (4) is located within the hollow cavity and a vibration space is reserved between the end portion of the partition plate (4) closer to the sounding segment (32) in the vibration direction of the vibrating plate (2) and the sounding segment (32); the connecting segment (31) is fixed on the partition plate (4) and the portion of the connecting segment (31) with a large elastic deformation amount is located within the vibration space.

4. The diaphragm receiver according to claim 1, wherein Further comprising a diaphragm disposed between the vibrating portion and the sounding segment (32) of the sealing film (3) and respectively connected to the vibrating portion and the sounding segment (32).

5. The diaphragm receiver according to claim 4, wherein The diaphragm is integrally formed with the vibrating plate (2).

6. The diaphragm receiver according to claim 5, wherein Further comprising a partition plate (4) fixedly installed on the housing (1); the partition plate (4) is located within the hollow cavity and is generally in a U shape; the side walls at both ends of the opening form opposite support frames (51); both ends of the opening of the U shape are respectively fixed on one of the support frames (51), and the inner cavity of the opening of the U shape forms a vibration space.

7. The diaphragm receiver according to claim 5, wherein The sounding segment (32) of any one of the sealing films (3) reserves a vibration margin along the first direction at the edge of the inner cavity of the corresponding fixing frame (5).

8. The diaphragm receiver according to any one of claims 1 and 4 to 7, characterized in that: At least one magnetic isolation gap is provided on the vibration plate (2).

9. The diaphragm receiver according to claim 8, wherein The driving mechanism (6) comprises at least one permanent magnet (61) disposed on either side of any of the vibrating parts; and a coil (62) sleeved on the vibrating plate (2) and close to the fixed part; any of the permanent magnets (61) is disposed opposite to the vibrating part; A vibration gap is reserved between any of the permanent magnets (61) and the adjacent vibration part, and between the coil (62) and the vibration part; and the coil (62) is arranged in the installation cavity (20).

10. The diaphragm receiver according to claim 9, wherein A permanent magnet (61) is respectively arranged on both sides of any of the vibration parts; adjacent permanent magnets (61) are arranged opposite to each other, and the polarities of the opposite sides are opposite.

11. The diaphragm receiver according to claim 10, wherein The housing (1) comprises an upper shell (11) formed by a first bottom surface and side walls, and a lower shell (12) formed by a second bottom surface and side walls, wherein the upper shell (11) is buckled onto the lower shell (12) to form the hollow cavity.

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