CN217883828U - Moving iron unit and telephone receiver - Google Patents

Abstract

The utility model provides a move indisputable unit, includes inside shell that is equipped with the cavity, will the cavity is cut apart into the vibrating diaphragm of epicoele and cavity of resorption and is fixed in motor element in the cavity of resorption, the shell includes inferior valve, center and epitheca, the vibrating diaphragm centre gripping in the center with between the epitheca and will epicoele and cavity of resorption are separated into to the cavity, motor element is fixed in the inferior valve, the center cover is located motor element outer and with the inferior valve links up fixedly, motor element drives the vibrating diaphragm vibrates from top to bottom. This application moves indisputable unit and has simplified partial spare part structure, makes structural design change in the automatic assembly that realizes the spare part, reduces the human use.

Description

Moving iron unit and telephone receiver

Technical Field

The present application relates to the field of audio communications, and more particularly, to a moving-iron unit and a receiver.

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 component 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 component 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 this, it is necessary to provide a moving iron unit and a receiver that have simple structures and are easy to realize large-scale automated production.

For solving above-mentioned technical problem, this application provides a move indisputable unit, including inside be equipped with the cavity the shell, will the cavity is cut apart into the vibrating diaphragm of epicoele and cavity of resorption and is fixed in motor element in the cavity of resorption, the shell includes inferior valve, center and epitheca, the vibrating diaphragm will epicoele and cavity of resorption are separated into to the cavity, motor element is fixed in the inferior valve, the center cover is located motor element outer and with the inferior valve links up fixedly, motor element drives the vibrating diaphragm vibrates from top to bottom.

Preferably, the inferior valve includes the lower casing and certainly the outer circumference of inferior valve goes up the inferior valve lateral wall of bending type, the lead wire export has been seted up to the vertical first end of inferior valve lateral wall, motor element passes through glue and is fixed in the inferior valve.

Preferably, the upper shell comprises an upper shell, a lower shell side wall formed by bending downwards from the periphery of the upper shell, and a sound outlet arranged at the longitudinal second end of the lower shell side wall; the middle frame comprises a frame body and a cavity which is located in the frame body and penetrates through the frame body from top to bottom, the lower surface of the frame body is attached to and fixed with the upper surface of the side wall of the lower shell, the vibrating diaphragm comprises a support, a vibrating wing connected to the support and a film thermally formed on the support and the vibrating wing, and the support is clamped between the frame body and the side wall of the upper shell and fixed.

Preferably, after 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, the vibrating diaphragm is placed above the middle frame, the upper shell is covered on the upper side of the vibrating diaphragm, the lower surface of the support of the vibrating diaphragm 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 the middle frame, the vibrating diaphragm and the upper shell are pre-fixed in a discontinuous spot welding mode.

Preferably, the joints between the lower shell, the middle frame and the support and the upper shell of the vibrating diaphragm of the shell are sealed and welded in a continuous laser welding mode, and during welding, multiple beams of laser are simultaneously adopted for welding, and the shell is rotated to realize continuous welding.

Preferably, the motor assembly includes a magnetic unit, a coil adhered to one longitudinal end of the magnetic unit, a reed, and a connecting rod connecting the reed and the vibration wing, the magnetic unit includes an iron core having a longitudinal through-receiving space, a first magnet and a second magnet fixed to upper and lower sides of the receiving space, and a cavity formed between the first magnet and the second magnet, the coil includes a coil body fixed to one longitudinal end of the iron core, a coil hole longitudinally penetrating through the coil body and corresponding to the cavity, and a pair of leads extending out of the lead outlet, and the motor assembly is fixed in the lower case through the iron core.

Preferably, the reed includes the fixed part, certainly the fixed part extends to coil hole and the cavity in the vibration portion of suspension and certainly the vibration portion extends the extension portion in the magnetic unit outside, the wing that shakes of vibrating diaphragm corresponds extension portion position department is equipped with the connecting hole, connecting rod one end weld in on the extension portion, the other end extends to the connecting hole internal point is fixed, drive during the vibration of reed vibration portion the wing that shakes vibrates and is in the epicoele produces sound.

Preferably, the reed is of a U-shaped structure, the fixing portion extends horizontally and is fixed on the upper side of the iron core after the vibrating portion is bent reversely, the fixing portion is attached to the upper surface of the iron core and welded and fixed on the periphery of the attaching portion, and the fixing portion is partially suspended above the coil.

Preferably, the vibration wing is positioned in the bracket and connected to one longitudinal side of the bracket through a connecting part; except the connecting part, a continuous gap is formed between the bracket and the vibration wing, and the film comprises a film body which is attached to the surfaces of one side of the bracket and the vibration wing and a runway which is pressed into the gap and penetrates to the other side.

In order to solve the technical problem, the application further provides a telephone receiver which comprises the moving iron unit.

This application moves indisputable unit and greatly reduced through cutting apart into independent inferior valve, center and epitheca with the shell the degree of depth of inferior valve, and then can reduce motor element through automatic equipment in degree of difficulty in the inferior valve, compromise the connecting rod simultaneously and be in convenient automatic point after the vibrating diaphragm equipment is glued fixedly the connecting rod in connecting hole and through-hole are interior. The design scheme greatly improves the automation capacity, greatly improves the product assembly efficiency and reduces the manufacturing cost.

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 of 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 shown in FIG. 7;

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

Description of the reference numerals

-a housing-10; a middle frame-11; a frame-111; a cavity-112; -113, an upper surface; a 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; bracket-21; longitudinal side stent body-211; lateral stent body-212; a vibrating wing-22; wing body-221; a convex rib-222; 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 tightening part-332; a vibrating section-333; an extension-334; a connecting rod-34; a weldment-40; soldering lug-41; a lead aperture-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 a longitudinal direction, the Y direction is taken as a transverse direction, and the Z direction is taken as a 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 that penetrates the frame body 11 in the vertical direction and is 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 shell 12 includes a lower shell 121, a lower shell sidewall 122 formed by bending upward from the periphery of the lower shell 121, and a lead outlet 123 opened at a first longitudinal end of the lower shell 12. The upper surface of the lower case side wall 122 is correspondingly attached to the lower surface 114 of the middle frame 11 and fixed together by welding at the outer 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 vibration wing 22 is formed by punching a metal plate at one time, the longitudinal second end of the vibration wing 22 is connected with the longitudinal side support body 211 of the support 21 into a whole through a connecting part 24, the connecting part 24 is preferably a pair, a cutting hole 25 is formed between the connecting part 24 in a cutting mode, a gap 26 is formed between the vibration wing 22 and the support 21 except the connecting part 24, the vibration wing 22 can vibrate up and down by relying on the connecting part 24, and the width of the connecting part 24 is not too wide so that the connecting part has certain elasticity. The cut hole 25 may be present as a part of the gap 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, and the area of the rib is larger than half of the area of the vibration wing 22, or the rib 222 exists in a plurality of forms, so as to ensure the consistency of the vibration 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 vibrating 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 vibrating 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 spaced 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 wing 22 shakes is split type structure, and at hot briquetting during membrane 23, will again membrane 23 hot pressing in still will behind the support 21 wing 22 that shakes pastes in membrane 23 upside and in longitudinal end portion with support 21 coincidence, 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 wing 22 shakes, and support 21 with form the confession between the wing 22 shakes the space 26 of membrane 23 shaping runway 232, and connecting portion 24 will the wing 22 that shakes connect in on the support 21 and provide certain holding power, this application wing structure that shakes is simple, and stamping process, thermoforming process have all realized simplifying, 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 curing may be performed by means of light 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 enabling the cavity 315 and the coil hole 322 to 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 portion of the fixing portion 331 located on the upper side of the coil 32 is not in contact with the coil 32 and is in a suspended state, and the tightening portion 332 is located on 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 magnetic unit 31's iron core, so that with first magnet 313 with second magnet 314 through glue respectively earlier bond in second iron core 312 with on the first iron core 311, again will 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 tab 41 adhered to one side of the case 10 in the longitudinal direction, a lead hole 411 opened in the soldering tab 41 and communicating with the lead outlet 123, and a solder 42 for soldering a lead 323 of the coil 32 to the soldering tab 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 the middle frame and the lower shell;

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 casing side wall 122 and is tack-welded and pre-fixed at a partial position where the two are joined.

S203, welding one end of the connecting rod 34 to the extending portion 334, and then covering the diaphragm 20 on the upper side of the middle frame 11 to attach and pre-weld the upper surface 113 of the frame 111 to the lower surface of the bracket 21;

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 by the middle frame 11 and the upper shell 13, that is, the diaphragm 20 is directly bonded in the upper shell in a traditional structure without the middle frame, 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 is 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 greatly reduced through cutting apart into independent inferior valve 12, center 11 and epitheca 13 with shell 10 inferior valve 12's degree of depth, and then can realize motor element 30 is automatic assemble 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, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are 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 move indisputable unit, includes inside shell that is equipped with the cavity, will the cavity is cut apart into the vibrating diaphragm of epicoele and cavity of resorption and is fixed in motor element in the cavity of resorption, a serial communication port, the shell includes inferior valve, center and epitheca, the vibrating diaphragm will epicoele and cavity of resorption are separated into to the cavity, motor element is fixed in the inferior valve, the center cover is located motor element outer and with the inferior valve links up fixedly, motor element drives the vibrating diaphragm vibrates from top to bottom.

2. The moving-iron unit according to claim 1, wherein the lower casing comprises a lower casing body and a lower casing side wall formed by bending upwards from the outer circumference of the lower casing body, a lead outlet is formed at a first longitudinal end of the lower casing side wall, and the motor assembly is fixed in the lower casing body by glue or welding.

3. The moving iron unit according to claim 2, wherein said upper casing comprises an upper casing, a lower casing side wall formed by bending downward from the outer periphery of said upper casing, and a sound outlet provided at a second longitudinal end of said 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 attached to and fixed with the upper surface of the side wall of the lower shell, the vibrating diaphragm comprises a support, a vibrating wing connected to the support and a film thermally formed on the support and the vibrating wing, and the support is clamped between the frame body and the side wall of the upper shell and fixed.

4. The moving-iron unit as claimed in claim 3, wherein after the motor assembly is fixed in the lower casing, the middle frame is sleeved from top to bottom into the periphery of the motor assembly and the bottom surface of the middle frame is attached to the top surface of the side wall of the lower casing, the middle frame and the lower casing are pre-fixed by means of discontinuous spot welding, the diaphragm is placed above the middle frame, the upper casing is then covered on the upper side of the diaphragm, the lower surface of the support of the diaphragm 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 casing, and the middle frame, the diaphragm and the upper casing are pre-fixed by means of discontinuous spot welding.

5. The moving-iron unit as claimed in claim 4, wherein the joints between the lower casing, the middle casing, the support of the diaphragm and the upper casing of the casing are hermetically welded by continuous laser welding, and the welding is performed by simultaneously welding a plurality of laser beams and rotating the casing to perform continuous welding.

6. The moving-iron unit according to claim 3, wherein said motor assembly comprises a magnetic unit, a coil adhered to one longitudinal end of said magnetic unit, a reed, and a connecting rod connecting said reed and said vibrating wing, said magnetic unit comprises an iron core having a receiving space extending longitudinally therethrough, a first magnet and a second magnet fixed to upper and lower sides of said receiving space, and a cavity formed between said first magnet and said second magnet, said coil comprises a coil body fixed to one longitudinal end of said iron core, a coil hole extending longitudinally through said coil body and corresponding to said cavity, and a pair of leads extending out of said lead outlet, said motor assembly is fixed in said lower casing through said iron core.

7. The moving-iron unit as claimed in claim 6 wherein said reed includes a fixed portion, a vibrating portion extending from said fixed portion to the coil hole and suspended in the cavity, and an extending portion extending from said vibrating portion to the outside of said magnetic unit, a connecting hole is provided at a position of the vibrating wing of said diaphragm corresponding to said extending portion, one end of said connecting rod is welded to said extending portion, the other end of said connecting rod extends into said connecting hole for dispensing and fixing, and said vibrating portion of said reed drives said vibrating wing to vibrate and generate sound in said upper cavity when vibrating.

8. The moving-iron unit according to claim 7, wherein said spring is U-shaped, said fixing portion is fixed to the upper side of said iron core by extending horizontally after bending back from said vibrating portion, said fixing portion is attached to the upper surface of said iron core and welded to the periphery of the attachment, and said fixing portion is partially suspended above said coil.

9. The moving-iron unit according to claim 7, wherein said oscillating wing is located in said frame, said oscillating wing being connected to one longitudinal side of said frame by a connecting portion; except the connecting part, a continuous gap is formed between the bracket and the vibration wing, and the membrane comprises a membrane body which is attached to the surfaces of one side of the bracket and the vibration wing and a runway which is pressed into the gap and penetrates to the other side.

10. A receiver comprising a moving-iron unit according to any one of claims 1 to 9.

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