CN218679377U - Motor assembly and moving iron unit - Google Patents

Abstract

The utility model provides a motor element, includes the magnetism unit, bond in the coil and the reed of the vertical one end of magnetism unit, the magnetism unit includes mutually independent first iron core, second iron core, first magnet and second magnet, first iron core include the diapire and certainly the perpendicular wall that the horizontal both sides of diapire upwards extend and form, first magnet bonds and is fixed in on the lower surface of second iron core, the second magnet bonds and is fixed in on the diapire internal surface of first iron core, it has to bond the second iron core welded fastening of first magnet is a pair of on the perpendicular wall, first magnet sets up with the second magnet relatively and is formed with the cavity in the centre, the coil including bond in the coil body of the vertical one end of first iron core and second iron core and vertically run through the correspondence the coil hole of cavity, include the stiff end and certainly the stiff end extends and suspension in coil hole and the vibration portion in the cavity. The application also includes a moving iron unit.

Description

Motor assembly and moving iron unit

Technical Field

The present application relates to the field of audio communication, and more particularly, to a motor assembly and a moving-iron 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. CN201721263601.7 discloses a receiver, which comprises a lower shell; the moving iron unit is arranged in the lower shell; one end of the connecting rod is connected with the moving iron unit; the vibrating diaphragm comprises a support, a film and a vibrating wing, the film is fixed on the support, the vibrating wing is fixed on the film, and one surface of the support is welded and fixed with the lower shell; and the upper shell is welded and fixed with the other surface of the bracket, and the upper shell is also provided with a sound outlet hole. 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 operation. 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 thin film, the vibrating wing is generally connected to the support through hot press forming, the hot press forming scheme of the process is complex, and the yield is low. The traditional motor assembly generally comprises a 'return' iron core, a pair of magnets arranged at the upper side and the lower side in the iron core, a coil adhered at 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 are required to be adhered inside the iron core, and 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 to cause quality problems.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a motor assembly and a moving-iron unit with a structure that is easy to assemble automatically.

For solving above-mentioned technical problem, the application provides a motor element, including magnetism unit, bond in the coil and the reed of the vertical one end of magnetism unit, magnetism unit includes mutually independent first iron core, second iron core, first magnet and second magnet, first iron core include the diapire and certainly the perpendicular wall that the horizontal both sides of diapire upwards extend and form, first magnet bonds and is fixed in on the lower surface of second iron core, second magnet bonds and is fixed in on the diapire internal surface of first iron core, it has to bond the second iron core welded fastening of first magnet is a pair of on the perpendicular wall, first magnet sets up and is formed with the cavity in the centre with the second magnet relatively, the coil including bond in the coil body of the vertical one end of first iron core and second iron core and vertically run through the correspondence the coil hole of cavity, the reed includes the stiff end and certainly the stiff end extends and suspends in the vibration portion in coil hole and the cavity.

Preferably, the first iron core is of a U-shaped structure, the second iron core is of a plate-shaped structure, and when the second iron core is welded on the first iron core, the first magnet and the second magnet of the plate-shaped structure are respectively bonded and fixed on the second iron core and the first iron core.

Preferably, the width of the first magnet and the second magnet is smaller than the width of the bottom walls of the second iron core and the first iron core, and the bottom surfaces of the two transverse sides of the second iron core are attached to the upper surfaces of the pair of vertical walls and welded and fixed at the joint of the two transverse outer sides.

Preferably, the fixed part of the reed is formed by bending and extending from one end of the vibration part in the opposite direction, is fixed on the upper surface of the second iron core, and forms a tensioning part at the bending position, the fixed part is at least partially suspended above the coil, the tensioning part is positioned at the longitudinal outer side of the coil, and the free end of the vibration part continuously extends out of the magnetic unit and forms an extension part.

Preferably, the fixing portion and the second core are fixed by spot welding from an outer circumference or a top surface.

For solving above-mentioned technical problem, this application still provides a move indisputable unit, including aforementioned motor element, equipment motor element shell in and with motor element passes through the vibrating diaphragm that the connecting rod is connected, the shell includes inferior valve, center and epitheca, the vibrating diaphragm with the epitheca encloses and establishes into the epicoele, vibrating diaphragm, center and inferior valve enclose and establish into the cavity down, motor element is fixed in the inferior valve, the center cover is located motor element outer and with the inferior valve links up fixedly, connecting rod one end weld in on the extension of reed, the other end of connecting rod is fixed in on the vibrating diaphragm.

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 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 on 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 covers 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 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 support and the vibration wing, the membrane comprises a membrane body which is attached to the surface of one side of the support and the vibration wing, and a track which is pressed into the gap and penetrates to the other side, a connecting hole is formed in the position of the vibration wing corresponding to the connecting rod, and one end of the connecting rod is located in the connecting hole and fixed through dispensing.

This application motor element will independent first iron core and second iron core are cut apart into to the iron core of magnetism unit, so that will first magnet with the second magnet through glue respectively earlier bond in the second iron core with on the first iron core, again will the second iron core with first iron core 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.

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 the line B-B in FIG. 4;

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; 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; -13, an upper shell; 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; a connecting hole-223; an opening-224; a void-26; 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 casing 13 and a lower casing 12 respectively located at upper and lower sides of the middle frame 11, the diaphragm 20 is clamped between the middle frame 11 and the upper casing 13, and the diaphragm 20 and the upper casing 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 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 bracket body 211 and a lateral bracket body 212. The vibration wing 22 includes a wing body 221, a rib 222 formed by stamping from the wing body 221 upward, 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 ribs 224 serve to maintain the consistency of the oscillating wing 22 during vertical vibration, and even if the oscillating wing 22 vibrates vertically, the two lateral sides of the oscillating wing maintain consistent flatness vibration, 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 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 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 in a U-shaped structure, and the spring plate 33 includes a fixing portion 331, a tensioning portion 332 formed by bending one longitudinal end of the fixing portion 331 in a reverse direction, a vibrating portion 333 horizontally extending from the tensioning portion 332 and located below the fixing portion 331, and an extending portion 334 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 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 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 the moving-iron unit of the present application is as follows, when the electrical signal passes through the coil 32, the motor assembly 30 generates magnetism, so that the vibrating portion 33 of the reed 30 vibrates up and down and drives the vibrating wing 22 of the vibrating diaphragm 20 to vibrate up and down through the connecting rod 34, the upper cavity S1 generates a sound signal and passes through the sound outlet 133 to penetrate out, and the principle is the prior art and is not described herein again.

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 attached 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 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 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.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure 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 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 motor element, includes the magnetism unit, bond in the coil and the reed of the vertical one end of magnetism unit, a serial communication port, the magnetism unit includes mutually independent first iron core, second iron core, first magnet and second magnet, first iron core include the diapire and certainly the perpendicular wall that the horizontal both sides of diapire upwards extend and form, first magnet bonds and is fixed in on the lower surface of second iron core, the second magnet bonds and is fixed in on the diapire internal surface of first iron core, it has to bond the second iron core welded fastening of first magnet is a pair of on the perpendicular wall, first magnet sets up with the second magnet relatively and is formed with the cavity in the centre, the coil including bond in the coil body of first iron core and the vertical one end of second iron core and vertically run through the correspondence the coil hole of cavity, the reed includes the stiff end and certainly the stiff end extends and suspension in coil hole and the vibration portion in the cavity.

2. The motor assembly of claim 1, wherein the first core has a U-shaped configuration, the second core has a plate-shaped configuration, and the first and second magnets of the plate-shaped configuration are bonded to the second and first cores, respectively, when the second core is welded to the first core.

3. The motor assembly of claim 2, wherein the width of the first and second magnets is smaller than the width of the bottom walls of the second and first cores, and the bottom surfaces of the second core at both lateral sides are fitted to the upper surfaces of the pair of vertical walls and the joint of the two is welded and fixed from the lateral outside.

4. The motor assembly of claim 3, wherein the fixing portion of the spring is formed by bending and extending from one end of the vibrating portion in a reverse direction, is fixed to the upper surface of the second core, and forms a tightening portion at the bent position, the fixing portion is at least partially suspended above the coil, the tightening portion is located at the longitudinal outer side of the coil, and the free end of the vibrating portion continues to extend outward from the magnetic unit and forms an extension portion.

5. The motor assembly of claim 4, wherein the fixing portion and the second core are fixed by spot welding from an outer circumference or a top surface.

6. A moving-iron unit, characterized in that, include the motor element, equipment of claim 4 motor element in the shell and with the vibrating diaphragm that motor element passes through the connecting rod and connects, the shell includes inferior valve, center and epitheca, the vibrating diaphragm with the epitheca encloses and establishes into the epicoele, vibrating diaphragm, center and inferior valve enclose and establish into the cavity down, motor element is fixed in the inferior valve, the center cover is located motor element outside and with the inferior valve links up fixedly, connecting rod one end weld in on the extension of reed, the other end of connecting rod is fixed in on the vibrating diaphragm.

7. The moving-iron unit according to claim 6, 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 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.

8. The moving-iron unit as claimed in claim 7, wherein after the motor assembly is fixed in the lower casing, 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 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 covers 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.

9. The moving-iron unit as claimed in claim 8, 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.

10. The moving-iron unit according to claim 8, wherein said vibrating wing is located in said frame, said vibrating 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 support and the vibration wing, the membrane comprises a membrane body which is attached to the surface of one side of the support and the vibration wing, and a track which is pressed into the gap and penetrates to the other side, a connecting hole is formed in the position of the vibration wing corresponding to the connecting rod, and one end of the connecting rod is located in the connecting hole and fixed through dispensing.

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