CN217883816U - Vibrating diaphragm and moving iron unit - Google Patents

Abstract

The utility model provides a vibrating diaphragm, including support, vibration wing and thermoforming in support and vibration wing membrane on the surface, the support with the vibration wing adopts same sheet metal punching press to form, the vibration wing is located connect as an organic wholely through connecting portion in the support, the vibration wing with be formed with the space between the support, the membrane including laminate in support and vibration wing one side die body on the surface and shaping in runway in the space. The application also includes a moving iron unit.

Description

Vibrating diaphragm and moving iron unit

Technical Field

The application relates to the field of audio communication, especially indicates a vibrating diaphragm and move indisputable unit.

Background

True wireless earphones are increasingly applied to daily life of people, the limitation and inconvenience of wired earphones are effectively eliminated, and the industrial scale is rapidly expanding continuously. The moving iron unit is an electroacoustic transducer unit used in earphones and hearing aids to convert an electric signal into an acoustic signal, but the moving iron unit is extremely small in size, and the assembly of the product is extremely difficult, and thus the assembly and the test must be performed in an automated manner. Patent application No. 201721263601.7 of the people's republic of China discloses a moving-iron telephone receiver, which comprises a metal shell, a motor assembly assembled in the metal shell, a vibrating diaphragm dividing the metal shell into a front cavity and a rear cavity, and a connecting pin connecting a reed of the motor assembly with the vibrating diaphragm. The metal casing divide into two parts from top to bottom, including epitheca and inferior valve, the vibrating diaphragm centre gripping in between epitheca and the inferior valve and through some glue or welded fastening, when the equipment, the degree of depth of inferior valve is darker, the automatic equipment of being not convenient for motor element spare and welding jobs. The metal casing adopts the point to glue the mode sealed, has sealed not tight problem, leads to leaking the sound, influences the tone quality effect. The vibrating diaphragm comprises a support, a vibrating wing and a diaphragm, the vibrating wing is connected onto the support through hot press molding, the hot press molding scheme of the process is complex, and the yield is low. The motor assembly comprises a 'return' -shaped iron core, a pair of magnets arranged at the upper side and the lower side in the iron core, a coil adhered to one longitudinal end of the iron core and a reed at least partially penetrating between the coil and the pair of magnets, wherein the magnets need to be adhered inside the iron core, automation cannot be realized during assembly, or the magnets cannot be stably fixed in the iron core by adhesive, so that the magnets are easy to loosen and cause quality problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a diaphragm and a moving iron unit which have simpler structures and are easy to manufacture.

For solving above-mentioned technical problem, the application provides a vibrating diaphragm, including support, the wing that shakes and thermoforming in support and the wing that shakes are surperficial epaxial membrane, the support with the wing that shakes adopts same sheet metal punching press to form, the wing that shakes is located in the support and connect as an organic wholely through connecting portion, the wing that shakes with be formed with the space between the support, the membrane including laminate in support and the wing that shakes a lateral surface on die body and shaping in runway in the space.

Preferably, the support comprises a pair of longitudinal support bodies and a pair of transverse support bodies which are mutually connected, the vibration wings are positioned in the longitudinal support bodies and the transverse support bodies, one longitudinal end of each vibration wing is connected to one longitudinal support body through a connecting part, and the vibration wings and the support are provided with the gaps on both the transverse sides and the other longitudinal side opposite to the connecting part except the longitudinal side provided with the connecting part.

Preferably, the connecting portions are a pair of connecting portions, each connecting portion is connected to two lateral sides of one of the longitudinal bracket bodies and connected to one longitudinal side of the vibration wing, and a cutting hole for separating the bracket from the vibration wing is formed between the pair of connecting portions in a cutting manner.

Preferably, the number of the connecting parts is one, the connecting parts are respectively connected with the longitudinal support body and the middle part of one longitudinal end of the vibrating wing, and cutting holes communicated with the gap are formed in the two transverse sides of each connecting part in a cutting mode.

Preferably, the vibration wing is at least partially punched to form a convex rib protruding upwards or downwards, the membrane comprises a membrane body which is attached to the surface of the support and the vibration wing through thermal forming, and the membrane body comprises a convex rib attaching part attached to the surface of the convex rib.

Preferably, the track is formed by pressing the membrane body from the first side to the second side of the gap, and the track protrudes from the second side surface of the bracket and the vibrating wing.

Preferably, when the film is hot-pressed, the plurality of brackets and the vibrating wings are connected into a whole through a material belt, and are hot-pressed on the plurality of brackets and the vibrating wings through a film, and then the film at the edge is cut off through laser cutting.

For solving above-mentioned technical problem, this application still provides a move indisputable unit, including aforementioned vibrating diaphragm, motor element, shell and connecting rod, the shell includes inferior valve, center and epitheca, the vibrating diaphragm with the epitheca is enclosed and is established into the epicoele, vibrating diaphragm, center and inferior valve are enclosed and are established into the die cavity, motor element is fixed in the inferior valve, motor element is including the reed that is equipped with the vibration portion of vibration from top to bottom, the connecting rod is connected the vibration portion of wing and reed shakes, the center cover is located motor element outer and with the inferior valve links up fixedly.

Preferably, the vibrating wing is provided with a connecting hole at a position corresponding to the connecting rod, the reed is provided with a corresponding extending portion, one end of the connecting rod is welded on the extending portion, and the other end of the connecting rod extends into the connecting hole and is fixed by glue.

Preferably, the lower casing comprises a lower casing and a lower casing side wall formed by bending upwards from the outer circumference of the lower casing, a lead outlet is formed at a first longitudinal end of the lower casing side wall, the motor assembly is fixed in the lower casing, and the upper casing comprises an upper casing, a lower casing side wall formed by bending downwards from the outer circumference of the upper casing and a sound outlet formed at a second longitudinal end of the lower casing side wall; the middle frame comprises a frame body and a cavity which is located in the frame body and penetrates through the middle frame from top to bottom, the lower surface of the frame body is fixedly attached to the upper surface of the side wall of the lower shell, the motor assembly is fixed in the lower shell, the middle frame is sleeved into the periphery of the motor assembly from top to bottom, the bottom surface of the middle frame is attached to the top surface of the side wall of the lower shell, the middle frame and the lower shell are pre-fixed in a discontinuous spot welding mode, a support of the vibrating diaphragm is placed above the middle frame, the upper shell covers the upper side of the support, the lower surface of the support is attached to the upper surface of the frame, the upper surface of the support is attached to the lower surface of the side wall of the upper shell, and meanwhile the middle frame, the vibrating diaphragm and the upper shell are pre-fixed in a discontinuous spot welding mode.

In the manufacturing process of the vibrating diaphragm, a plurality of supports and vibrating wings are connected through material belts after being formed in a punching mode, the supports do not need to be cut, the diaphragm is directly formed on the supports and the vibrating wings which are connected together through the material belts in a one-step thermal mode, and then the diaphragm outside the supports is cut off in a laser cutting mode; compared with a structure that the transmission support and the vibrating wing are separated, the scheme is simpler and more convenient during thermal forming manufacturing, and meanwhile, the yield is greatly improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective assembly view of a moving iron unit according to the present application;

FIG. 2 is a partially exploded perspective view of the moving iron unit of the present application;

FIG. 3 is a complete exploded perspective view of the moving iron unit of the present application;

FIG. 4 is a perspective view of a diaphragm of the moving iron unit of the present application;

fig. 5 is an exploded perspective view of a diaphragm of the moving iron unit according to the present application;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a perspective assembly view of the motor assembly of the moving iron unit of the present application;

FIG. 8 is a cross-sectional view taken along the line C-C of FIG. 7;

fig. 9 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A shown in fig. 1.

Description of the reference numerals

-a housing-10; middle frame-11; a frame-111; a cavity-112; -113, an upper surface; lower surface-114; a lower shell-12; a lower housing-121; a lower housing sidewall-122; lead outlet-123; -an upper shell-13; an upper housing-131; an upper housing sidewall-132; a sound outlet-133; a vibrating diaphragm-20; a bracket-21; longitudinal side stent body-211; lateral stent body-212; a vibrating wing-22; wing body-221; a convex rib-222; a connecting hole-223; an opening-224; -26 voids; a connecting part-24; cutting a hole-25; film-23; a membrane body-231; runway-232; rib attaching part-233; a through-hole-234; a flow orifice-235; -a motor assembly-30; a magnetic unit-31; a first core-311; a bottom wall-3111; vertical wall-3112; a housing space-3113; vertical wall top-3114; bottom wall inner surface-3115; a second core-312; a top wall-3121; an inner top wall surface-3122; a first magnet-313; a second magnet-314; a cavity-315; a coil-32; a coil body-321; coil hole-322; a lead-323; reed-33; a fixed part-331; a tension section-332; a vibrating section-333; an extension-334; a connecting rod-34; a weldment-40; soldering lug-41; a lead hole-411; solder-42.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

In the present application, the X direction shown in fig. 1 is taken as the longitudinal direction, the Y direction is taken as the lateral direction, and the Z direction is taken as the vertical direction.

As shown in fig. 1 to fig. 3 and fig. 9, the moving iron unit of the present application includes a housing 10, a diaphragm 20 dividing the housing 10 into an upper chamber S1 and a lower chamber S2, a motor assembly 30 assembled in the lower chamber S2 of the housing 10, and a welding member 40 disposed at one longitudinal end of the housing 10.

The housing 10 includes a middle frame 11, and an upper shell 13 and a lower shell 12 respectively located at the upper and lower sides of the middle frame 11, the diaphragm 20 is clamped between the middle frame 11 and the upper shell 13, and the diaphragm 20 and the upper shell 13 enclose the upper cavity S1. The diaphragm 20, the middle frame 11 and the lower shell 12 enclose the lower cavity S2.

The middle frame 11 includes a frame body 111 and a cavity 112 penetrating the frame body 11 in the vertical direction and surrounded by the frame body 11. The frame 111 includes an upper surface 113 and a lower surface 114. The frame 111 has a substantially rectangular parallelepiped structure.

The lower case 12 includes a lower case 121, a lower case sidewall 122 formed by bending upward from the outer periphery of the lower case 121, and a lead outlet 123 formed at a first longitudinal end of the lower case 12. The upper surface of the lower shell sidewall 122 is correspondingly attached to the lower surface 114 of the middle frame 11 and fixed together by welding at the periphery.

The upper casing 13 includes an upper casing 131, an upper casing sidewall 132 formed by bending downward from the outer periphery of the upper casing 131, and a sound outlet 133 formed at a second longitudinal end of the upper casing 13. The upper case side wall 132 and the upper surface 113 of the middle frame 11 sandwich the diaphragm 20 and are welded and fixed together from the outer periphery.

As shown in fig. 3 to fig. 6, the vibrating diaphragm 20 includes a support 21, a vibrating wing 22 connected to the support 21 as a whole, and a film 23 formed on the support 21 and the vibrating wing 22 by hot pressing. The bracket 21 includes a longitudinal side bracket body 211 and a lateral side bracket body 212. The vibration wing 22 includes a wing body 221, a rib 222 formed by upward punching from the wing body 221, a connection hole 223 vertically penetrating through a first longitudinal end of the wing body 221, and an opening 224 vertically penetrating through a second longitudinal end of the wing body 221. The support 21 with the flapping 22 is formed through a metal sheet punching press, the vertical second end of flapping 22 pass through connecting portion 24 with the vertical side support body 211 of support 21 is connected as an organic wholely, connecting portion 24 is preferred a pair, and is in a pair of excision is formed with cutting hole 25 between connecting portion 24, the flapping 22 with between the support 21 except that connecting portion 24 appearance is formed with space 26, the flapping 22 relies on connecting portion 24 can vibrate from top to bottom, connecting portion 24's width should not be too wide so that it possesses certain elasticity. The cut hole 25 may be present as a part of the void 26. The connecting portion 24 is connected to the longitudinal side bracket body 211 at a position close to the lateral side bracket body 212.

The size of the vibrating blade 22 is very small, and therefore, it is preferable to adopt a design in which the pair of connecting portions 24 are not separated during vibration. Of course, in an embodiment, the connecting portion 24 may be a single design, and in this case, it is necessary that the connecting portion 24 has a certain width, and the gap 26 is integrally communicated with the cutting hole 25.

The oscillating wing 22 may be integrally connected to the lateral bracket body 212 of the bracket 21 through the connecting portion 24, which is not preferable in this embodiment, and is easily broken because it does not follow the extending direction of the connecting portion 24 on the elastic fulcrum. The rib 224 serves to maintain the consistency of the vibration wings 22 during vertical vibration, and even if the vibration wings 22 vibrate vertically, the vibration wings maintain consistent flatness on both lateral sides, thereby avoiding non-uniformity of vibration. The expression form of the rib 222 may be a whole body, and the area of the rib is larger than half of the area of the flapping wing 22, or the rib 222 may exist in a plurality of forms, so as to ensure the consistency of the vibration of the flapping wing 22.

The film 23 includes a wing body 231 thermally formed and bonded to the lower surfaces of the vibration wings 22 and the bracket 21, a track 232 pressed upward from the wing body 231 to above the gap 26, and a rib attaching portion 233 attached upward from the wing body 231 to the lower surface of the rib 222. A through hole 234 is formed through the wing body 231 corresponding to the connecting hole 223 of the vibration wing 22, and a flow hole 235 communicating the upper cavity S1 and the lower cavity S2 is formed through the wing body 231 corresponding to the opening 224 of the vibration wing 22. The inner diameter of the through hole 234 is identical to that of the connection hole 223, and the pitch of the flow hole 235 is much smaller than that of the opening hole 224. The lower side of the cutting hole 25 between the vibrating wing 22 and the bracket 21 is sealed by the film 23. The top of the runway 232 protrudes from the bracket 21 and is a certain distance away from the upper surface of the vibration wing 22 so that the vibration wing 22 is connected through the membrane 23 and provides a vibration stroke when vibrating up and down.

Traditional vibrating diaphragm 20 support 21 with flapping wing 22 is split type structure, and when hot briquetting during the membrane 23, will again the membrane 23 hot pressing in still will after the support 21 after will the flapping wing 22 pastes in membrane 23 upside and in longitudinal direction one end part with support 21 coincides, the preparation technology is complicated, and the defective rate is high.

The application of vibrating diaphragm 20 in the manufacturing process, a plurality of true and false 21 and the wing 22 that shakes for connecting through the material area after a plurality of support 21 and the wing 22 stamping forming do not need to cut this moment the support, directly will membrane 23 one-time thermoforming in a plurality of the material area link together support 21 with on the wing 22 shakes, subsequently, through laser cutting's mode excision the outer membrane 23 of support 21 adopts laser or the hot needle to scald the mode in hole to form simultaneously through-hole 234 and flow hole 235 remove the membrane 23 that the cutting got off and accomplish promptly vibrating diaphragm 20's manufacturing.

This application vibrating diaphragm 20 will support 21 with the integrative stamping forming of vibration wing 22, and support 21 with form the confession between the vibration wing 22 the space 26 of 23 shaping runways of membrane 232, and connecting portion 24 will vibration wing 22 connect in support 21 is last and provide certain confining force, and this application vibration wing simple structure, stamping process, thermal forming technology have all realized the simplification, can effectively improve the yield and reduce manufacturing cost.

As shown in fig. 2, fig. 3, and fig. 7 to fig. 9, the motor assembly 30 includes a magnetic unit 31, a coil 32 adhered to one side of the magnetic unit 31 in the longitudinal direction, a spring 33 passing through and suspended in the magnetic unit 31 and the coil 32, and a connecting rod 34 connecting the spring 33 and the diaphragm 20.

The magnetic unit 31 includes an iron core having a housing space 3113 extending in a longitudinal direction, and a first magnet 313 and a second magnet 314 bonded to upper and lower sides of the housing space 3113, respectively. A cavity 315 is formed between the first magnet 313 and the second magnet 314, the first magnet 313 and the second magnet 314 are plate-shaped structures and face each other at intervals of the cavity 315, and both the first magnet 313 and the second magnet 314 are surrounded by the iron core. The iron core includes a first iron core 311 and a second iron core 312, and the accommodating space 3113 is formed by enclosing the first iron core 311 and the second iron core 312.

The first core 311 includes a bottom wall 3111 and vertical walls 3112 extending upward from two lateral sides of the bottom wall 3111. The first core 311 has a substantially U-shaped structure, the bottom wall 3111 includes a bottom inner surface 3115 bonded to the second magnet 314, and the vertical wall 3112 includes a vertical wall top surface 3114 bonded to the second core 312 and welded together. The second core 312 has a plate-shaped structure having a width greater than that of the first magnet 313, and the second core 312 includes a top wall 3121, and the top wall 3121 includes a top wall inner surface 3122 bonded to the first magnet 313. The lateral widths of the first magnet 313 and the second magnet 314 are smaller than the lateral width of the accommodating space 3113.

The coil 32 includes a coil body 321, a coil hole 322 extending longitudinally and corresponding to the cavity 315, and a pair of lead wires 323. The structure of the coil 32 is well known in the art and will not be described herein.

The spring plate 33 is of a U-shaped structure, and the spring plate 33 includes a fixing portion 331, a tightening portion 332 formed by bending one longitudinal end of the fixing portion 331 in a reverse direction, a vibrating portion 333 formed by horizontally extending from the tightening portion 332 and located below the fixing portion 331, and an extending portion 334 formed by continuously extending from the vibrating portion 333 in a forward direction. The fixing portion 331 is fixed to the upper surface of the core by laser welding, that is, one side of the free end of the fixing portion 331 is attached to the upper surface of the second core 312 and welded and fixed to the side of the joint, the fixing portion 331 is suspended above the coil 32 near the tightening portion 332, and the vibrating portion 333 enters the cavity 315 between the first magnet 313 and the second magnet 314 from the coil hole 322 and is in a suspended state. The extension portion 334 extends out of the magnetic unit 31 and is located below the connection hole 223 and the through hole 234 of the diaphragm 20, one end of the connecting rod 34 is welded to the surface of the extension portion 334, the other end of the connecting rod 34 penetrates through the connection hole 223 and the through hole 234 and at least partially enters the upper cavity S1, and one end of the connecting rod 34 is fixed on the diaphragm 20 by dispensing in the connection hole 223 and the through hole 234.

The assembly method of the motor assembly 30 includes the steps of:

s101, bonding and curing the first magnet 313 and the second magnet 314 to the second iron core 312 and the first iron core 311, respectively;

in this step, glue is applied to the surfaces of the first magnet 313 and the second magnet 314, the first magnet 313 is bonded to the inner surface 3122 of the top wall of the second iron core 312, and the second magnet 314 is bonded to the inner surface 3115 of the bottom wall of the first iron core 311; subsequently, curing is performed, and the curing may be performed by light irradiation or the like. This step can be accomplished using an automated process.

S102, covering the combination of the first magnet 313 and the second iron core 312 on the top surface 3114 of the vertical wall 3112 of the first iron core 311, and welding and fixing;

the width of the first iron core 311 is the same as the width of the second iron core 312, and two side edges of the second iron core 312 are attached to the top surface 3114 of the vertical wall and fixed at corresponding positions on the upper surface of the second iron core 312 by spot welding.

S103, adhering the coil 32 to one longitudinal end of the magnetic unit 31, and making the cavity 315 and the coil hole 322 correspond to each other;

s104, inserting the vibrating part 333 of the reed 33 into the coil hole 322 and the cavity 315, and welding and fixing the fixing part 331;

in this step, the vibrating portion 332 is suspended in the cavity 315 between the coil hole 322 and the first and second magnets 313 and 314, the extending portion 334 protrudes out of the magnetic unit 31, the fixing portion 331 is supported on the upper surface of the second core 312 and is fixed by welding, the fixing portion 331 is not in contact with the coil 32 at the upper side of the coil 32 and is in a suspended state, and the tightening portion 332 is located at the outer side of the coil 32. When the equipment, iron core and reed 33 all can be in the connecting material area of stamping forming time, realize automatic equipment through the material area.

This application motor element 30 will independent first iron core 311 and second iron core 312 are cut apart into to the iron core of magnetism unit 31, so that with first magnet 313 with second magnet 314 bond earlier respectively through glue in second iron core 312 with on the first iron core 311, will again second iron core 312 with first iron core 311 welded fastening, so avoided the tradition can only vertically bond the magnet and lead to bonding insecure, can't realize the problem of automatic equipment.

The soldering member 40 includes a soldering piece 41 adhered to one side of the case 10 in a longitudinal direction, a lead hole 411 opened in the soldering piece 41 and communicating with the lead outlet 123, and a solder 42 for soldering a lead 323 of the coil 32 to the soldering piece 41.

The working principle of this application moving-iron unit is as follows, when the signal of telecommunication passes through during coil 32, make motor element 30 produces magnetism, makes the vibration portion 33 of reed 30 vibrates from top to bottom and passes through connecting rod 34 drives the wing 22 of vibrating diaphragm 20 vibrates from top to bottom the upper chamber S1 produces sound signal and passes through sound outlet 133 wears out, and this principle is prior art, and no longer repeated here.

The assembly of this application moving-iron unit includes following step:

s201, bonding the assembled motor assembly 30 in the lower shell 12;

the motor assembly 30 is assembled according to the method described above, in which glue is applied to the surface of the lower case 12, and then the motor assembly 30 is bonded downward to the surface of the lower case 12; specifically, the lower surface of the first core 311 is bonded to the lower case 12.

S202, sleeving the middle frame 11 outside the motor assembly 30, attaching the middle frame to the lower shell 12, and pre-welding and fixing;

in this step, the lower surface 114 of the frame 111 of the middle frame 11 is adhered to the upper surface of the lower case side wall 122 and is tack-welded and pre-fixed at a joint portion of the two.

S203, welding one end of the connecting rod 34 to the extension portion 334, and then covering the diaphragm 20 on the upper side of the middle frame 11 to make the upper surface 113 of the frame 111 and the lower surface of the bracket 21 fit together and pre-welded and fixed;

in this step, the outer dimension of the holder 21 is the same as the outer dimension of the frame 111, and after the two are bonded, the surface joint of the frame 111 and the holder 21 is pre-welded and fixed from the outer periphery. In this step, the connecting rod 34 extends from the connecting hole 223 and the through hole 234 of the diaphragm 20 to the upper side of the diaphragm 20.

In this step, the diaphragm 20 may be directly bonded and fixed in the middle frame 11, and the diaphragm 20 does not need to be clamped between the middle frame 11 and the upper shell 13, that is, the diaphragm 20 is directly bonded in the upper shell in a conventional non-middle frame structure, but this step causes difficulty in dispensing and cannot be automatically produced.

S204, dispensing to fix one end of the connecting rod 34 in the connecting hole 223 and the through hole 234 and seal the connecting hole 223;

s205, covering the upper shell 13 on the upper side of the diaphragm 20 and pre-welding and fixing the upper shell and the support 21; then, the periphery of the joint of the lower shell 12, the middle frame 11, the support 21 of the diaphragm 20 and the upper shell 13 is fixed and sealed by laser welding from the periphery;

the bottom surface of the upper case side wall 132 of the upper case 13 is attached to the upper surface of the bracket 21 and fixed by pre-welding from the outer periphery. The laser welding part comprises a joint position of the bottom of the lower shell 12 and the frame 111, the frame 111 and the support 21, and the joint position of the support 21 and the upper shell 13, wherein during laser welding, multiple paths of laser are adopted and the movable iron unit is rotated to continuously weld in a mode so as to seal each joint, and the upper cavity S1 and the lower cavity S2 are kept in a relatively sealed state.

S206, bonding the soldering lug 41 of the soldering member 40 to the end of the casing 10 where the lead outlet 123 is provided, and simultaneously soldering the pair of leads 323 of the coil 32 to the soldering lug 41 to form the solder 42.

This application moves indisputable unit and manufacturing method, through dividing into independent inferior valve 12, center 11 and epitheca 13 with shell 10, greatly reduced inferior valve 12's degree of depth, and then can realize motor element 30 is automatic to be assembled in inferior valve 12, compromise simultaneously connecting rod 34 and be in convenient automatic point after the equipment of vibrating diaphragm 20 is glued fixedly connecting rod 34 in connecting hole 223 and through-hole 234. The design scheme greatly improves the automation capacity, greatly improves the product assembly efficiency and reduces the manufacturing cost.

Meanwhile, the joints of the lower shell 12, the middle frame 11, the support 21 of the diaphragm 20 and the upper shell 13 are firstly fixed by spot pre-welding in a small number of points, and finally the periphery of the joints is sealed by continuous laser welding.

The application also comprises a telephone receiver, wherein the telephone receiver comprises the moving iron unit.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a vibrating diaphragm, includes support, vibration wing and thermoforming in support and vibration wing membrane on the surface, its characterized in that, the support with the vibration wing adopts same sheet metal punching press to form, the vibration wing is located in the support and connect as an organic wholely through connecting portion, the vibration wing with be formed with the space between the support, the membrane including laminate in support and vibration wing lateral surface on die body and the shaping in runway in the space.

2. The diaphragm of claim 1, wherein the support includes a pair of longitudinal support bodies and a pair of transverse support bodies connected to each other, the vibrating wing is located in the longitudinal support bodies and the transverse support bodies, one longitudinal end of the vibrating wing is connected to one of the longitudinal support bodies through a connecting portion, and the vibrating wing and the support are provided with the gap on both lateral sides and the other longitudinal side opposite to the connecting portion except for the longitudinal side provided with the connecting portion.

3. The diaphragm of claim 2, wherein the connecting portions are a pair of connecting portions, each connecting portion is connected to both lateral sides of one of the longitudinal frame bodies and to one longitudinal side of the vibrating wing, and a cutting hole for separating the frame from the vibrating wing is cut between the pair of connecting portions.

4. The diaphragm of claim 2, wherein the connecting portion is one, and connects the longitudinal support body and a middle portion of one longitudinal end of the vibrating wing, respectively, and both lateral sides of the connecting portion are cut to form cut holes communicated with the gap.

5. The diaphragm of claim 3, wherein the vibrating wing is at least partially punched to form a rib protruding upward or downward, the diaphragm includes a diaphragm body thermally formed and attached to the surface of the support and the vibrating wing, and the diaphragm body includes a rib attaching portion attached to the surface of the rib.

6. The diaphragm of claim 3, wherein the track is formed by pressing the diaphragm body from the first side to the second side of the gap, and the track protrudes from the second side surfaces of the frame and the vibrating wing.

7. The diaphragm of claim 6, wherein when the membrane is hot-pressed, the plurality of supports and the vibrating wings are connected into a whole through a material belt, and are hot-pressed on the plurality of supports and the vibrating wings through a membrane, and then the membrane at the edge is cut off through laser cutting.

8. A moving-iron unit, comprising the vibrating diaphragm, the motor assembly, the housing and the connecting rod as claimed in any one of claims 1 to 7, wherein the housing comprises a lower housing, a middle frame and an upper housing, the vibrating diaphragm and the upper housing are enclosed to form an upper chamber, the vibrating diaphragm, the middle frame and the lower housing are enclosed to form a lower chamber, the motor assembly is fixed in the lower housing, the motor assembly comprises a reed provided with a vibrating part vibrating up and down, the connecting rod is connected with the vibrating part of the vibrating wing and the reed, and the middle frame is sleeved outside the motor assembly and is fixedly connected with the lower housing.

9. The moving-iron unit according to claim 8, wherein the vibrating wing has a connecting hole at a position corresponding to the connecting rod, the spring plate has a corresponding extending portion, one end of the connecting rod is welded to the extending portion, and the other end of the connecting rod extends into the connecting hole and is fixed by dispensing.

10. The moving-iron unit according to claim 9, wherein the lower casing comprises a lower casing and a lower casing side wall formed by bending upwards from the outer circumference of the lower casing, a lead outlet is formed at a first longitudinal end of the lower casing side wall, the motor assembly is fixed in the lower casing, and the upper casing comprises an upper casing, a lower casing side wall formed by bending downwards from the outer circumference of the upper casing, and a sound outlet formed at a second longitudinal end of the lower casing side wall; the middle frame comprises a frame body and a cavity which is located in the frame body and penetrates through the middle frame from top to bottom, the lower surface of the frame body is fixedly attached to the upper surface of the side wall of the lower shell, the motor assembly is fixed in the lower shell, the middle frame is sleeved into the periphery of the motor assembly from top to bottom, the bottom surface of the middle frame is attached to the top surface of the side wall of the lower shell, the middle frame and the lower shell are pre-fixed in a discontinuous spot welding mode, a support of the vibrating diaphragm is placed above the middle frame, the upper shell covers the upper side of the support, the lower surface of the support is attached to the upper surface of the frame, the upper surface of the support is attached to the lower surface of the side wall of the upper shell, and meanwhile the middle frame, the vibrating diaphragm and the upper shell are pre-fixed in a discontinuous spot welding mode.

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