WO2023005269A1 - 振膜、马达组件及动铁单元 - Google Patents

振膜、马达组件及动铁单元 Download PDF

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Publication number
WO2023005269A1
WO2023005269A1 PCT/CN2022/087537 CN2022087537W WO2023005269A1 WO 2023005269 A1 WO2023005269 A1 WO 2023005269A1 CN 2022087537 W CN2022087537 W CN 2022087537W WO 2023005269 A1 WO2023005269 A1 WO 2023005269A1
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WO
WIPO (PCT)
Prior art keywords
iron core
bracket
fixed
vibrating
magnet
Prior art date
Application number
PCT/CN2022/087537
Other languages
English (en)
French (fr)
Inventor
贾少伟
刘建军
廖兵
董杰
刘洋
Original Assignee
深圳市长盈精密技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202121738812.8U external-priority patent/CN217883816U/zh
Priority claimed from CN202110856031.7A external-priority patent/CN113825074A/zh
Priority claimed from CN202121750580.8U external-priority patent/CN218679377U/zh
Application filed by 深圳市长盈精密技术股份有限公司 filed Critical 深圳市长盈精密技术股份有限公司
Publication of WO2023005269A1 publication Critical patent/WO2023005269A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Definitions

  • the present application relates to the field of audio communication, in particular to a diaphragm, a motor assembly and a moving iron unit.
  • the moving iron unit is an electro-acoustic conversion unit used in earphones and hearing aids. It is used to convert electrical signals into sound signals.
  • the size of the moving iron unit is extremely small, and product assembly is extremely difficult. It must be assembled in an automated way. test.
  • a moving iron receiver which includes a metal casing, a motor assembly assembled in the metal casing, a diaphragm that divides the metal casing into a front cavity and a rear cavity, and connects the motor The reed of the component and the connection pin of the diaphragm.
  • the metal shell is divided into upper and lower parts, including an upper shell and a lower shell.
  • the diaphragm is clamped between the upper shell and the lower shell and fixed by dispensing or welding. When assembling, the lower shell The depth is relatively deep, which is not convenient for automatic assembly and welding of the motor assembly.
  • the metal shell is sealed by dispensing glue, which has the problem of poor sealing, which leads to sound leakage and affects the sound quality effect.
  • the diaphragm includes a bracket, flapping wings and a membrane, and the flap is connected to the bracket by thermoforming the membrane. The thermoforming scheme of this process is complicated and the yield rate is low.
  • the motor assembly includes a "back"-shaped iron core, a pair of magnets placed on the upper and lower sides of the iron core, a coil bonded to one longitudinal end of the iron core, and at least partially passing through the coil and a pair of the The reeds between the magnets, the magnets need to be bonded inside the iron core, and the assembly cannot be automated, or the glue cannot stably fix the magnets in the iron core, and it is easy to loosen and cause quality problems question.
  • the present application provides a diaphragm, including a bracket, a vibrating wing, and a film thermoformed on the surface of the bracket and the vibrating wing, and the bracket and the vibrating wing are stamped from the same sheet metal
  • the vibrating wing is located in the bracket and connected as a whole through a connecting part, a gap is formed between the vibrating wing and the bracket, and the film includes a The mold body and the runway formed in the gap.
  • the present application also provides a motor assembly, including a magnetic unit, a coil and a reed bonded to one longitudinal end of the magnetic unit, and the magnetic unit includes a first iron core, a second An iron core, a first magnet and a second magnet, the first iron core includes a bottom wall and vertical walls extending upward from both lateral sides of the bottom wall, the first magnet is bonded and fixed to the second iron core On the lower surface, the second magnet is bonded and fixed on the inner surface of the bottom wall of the first iron core, and the second iron core bonded with the first magnet is welded and fixed on a pair of the vertical walls, The first magnet and the second magnet are arranged opposite and form a cavity in the middle, and the coil includes a coil body bonded to one longitudinal end of the first iron core and the second iron core and runs through the corresponding cavity longitudinally.
  • the coil hole, the reed includes a fixed end and a vibrating part extending from the fixed end and suspended in the coil hole and the cavity.
  • the present application also provides a moving iron unit, including a motor assembly, a casing assembled with the motor assembly, and a diaphragm connected to the motor assembly through a connecting rod.
  • the motor assembly includes a magnetic unit, a coil and a reed bonded to one longitudinal end of the magnetic unit, the magnetic unit includes a first iron core, a second iron core, a first magnet and a second magnet that are independent of each other, and the first magnet is bonded fixed on the lower surface of the second iron core, the second magnet is bonded and fixed on the inner surface of the bottom wall of the first iron core, the first iron core and the second iron core are fixed together,
  • the first magnet and the second magnet are arranged opposite and form a cavity in the middle, and the coil includes a coil body bonded to one longitudinal end of the first iron core and the second iron core and runs through the corresponding cavity longitudinally.
  • the coil hole, the reed includes a fixed end, a vibrating part extending from the fixed end and suspended in the coil hole and the cavity, and an extension part extending from the vibrating part outside the magnetic unit, so
  • the diaphragm includes a bracket, a vibrating wing and a film thermoformed on the surface of the bracket and the vibrating wing.
  • the bracket and the vibrating wing are stamped from the same sheet metal, and the vibrating wing is located in the bracket and Connected as a whole through the connecting part, a gap is formed between the flap and the support, and the membrane includes a mold body attached to the surface of the support and the flap and a runway formed in the gap , the shell includes a lower shell, a middle frame and an upper shell, the diaphragm and the upper shell are surrounded by an upper cavity, the diaphragm, the middle frame and the lower shell are surrounded by a lower cavity, and the motor assembly is fixed In the lower case, the middle frame is sleeved outside the motor assembly and connected with the lower case, one end of the connecting rod is welded to the extension of the reed, and the other end of the connecting rod One end is fixed on the diaphragm.
  • brackets and vibrating wings are punched and formed into several true and false parts and vibrating wings connected by strips. At this time, there is no need to cut the brackets, and the film is directly thermoformed at one time. On the support and the vibrating wings connected together by several of the material strips, and then cut off the film outside the support by laser cutting; It is simpler and more convenient, and the yield rate is greatly improved.
  • the motor assembly of the present application divides the iron core of the magnetic unit into independent first iron cores and second iron cores, so as to bond the first magnet and the second magnet to the second iron core respectively through glue.
  • the iron core is connected to the first iron core, and then the second iron core is welded and fixed to the first iron core, so as to avoid the traditional bonding of magnets only in the longitudinal direction, resulting in weak bonding, and automatic assembly cannot be realized The problem.
  • Fig. 1 is the three-dimensional assembly diagram of the moving iron unit of the present application
  • Fig. 2 is a partial three-dimensional exploded view of the moving iron unit of the present application
  • Figure 3 is a complete three-dimensional exploded view of the moving iron unit of the present application.
  • Fig. 4 is the perspective view of the diaphragm of the moving iron unit of the present application.
  • Fig. 5 is a three-dimensional exploded view of the diaphragm of the moving iron unit of the present application.
  • Fig. 6 is a sectional view along the broken line B-B shown in Fig. 5;
  • Fig. 8 is a sectional view along the dashed line C-C shown in Fig. 7;
  • Fig. 9 is a sectional view along the dashed line A-A shown in Fig. 1 .
  • the X direction shown in FIG. 1 is taken as the longitudinal direction
  • the Y direction is taken as the transverse direction
  • the Z direction is taken as the vertical direction.
  • the moving iron unit of the present application includes a housing 10, a diaphragm 20 that separates the housing 10 into an upper chamber S1 and a lower chamber S2, and is assembled on the lower chamber of the housing 10.
  • the motor assembly 30 in the chamber S2 and the weldment 40 disposed at one longitudinal end of the housing 10 .
  • the casing 10 includes a middle frame 11, an upper casing 13 and a lower casing 12 respectively located on the upper and lower sides of the middle frame 11, the diaphragm 20 is clamped between the middle frame 11 and the upper casing 13, The diaphragm 20 and the upper shell 13 define the upper chamber S1. The diaphragm 20 is surrounded by the middle frame 11 and the lower case 12 to form the lower cavity S2.
  • the middle frame 11 includes a frame body 111 and a cavity 112 penetrating up and down and surrounded by the frame body 11 .
  • the frame body 111 includes an upper surface 113 and a lower surface 114 .
  • the frame body 111 is roughly in the shape of a rectangular parallelepiped.
  • the lower shell 12 includes a lower shell 121 , a lower shell sidewall 122 bent upward from the outer periphery of the lower shell 121 , and a lead wire outlet 123 defined at a first longitudinal end of the lower shell 12 .
  • the upper surface of the lower shell side wall 122 is in contact with the lower surface 114 of the middle frame 11 and fixed together by welding on the outer periphery.
  • the upper shell 13 includes an upper shell 131 , an upper shell side wall 132 bent downward from the outer periphery of the upper shell 131 , and a sound outlet 133 defined at the second longitudinal end of the upper shell 13 .
  • the upper shell side wall 132 and the upper surface 113 of the middle frame 11 clamp the diaphragm 20 and are welded and fixed together from the outer periphery.
  • the diaphragm 20 includes a bracket 21, a vibrating wing 22 integrally connected with the bracket 21, and a film 23 formed on the bracket 21 and the flapping wing 22 by thermocompression .
  • the bracket 21 includes a longitudinal side bracket body 211 and a lateral side bracket body 212.
  • the vibrating wing 22 includes a wing body 221, a rib 222 punched upward from the wing body 221, a connecting hole 223 penetrating up and down through the first longitudinal end of the wing body 221, and a second longitudinal end of the wing body 221 up and down.
  • the opening 224 at the end.
  • the bracket 21 and the vibrating wing 22 are formed by one stamping of a metal plate, and the longitudinal second end of the vibrating wing 22 is connected as a whole with the longitudinal side bracket body 211 of the bracket 21 through the connecting part 24 .
  • the connecting portion 24 is preferably a pair, and a cutting hole 25 is formed between the pair of connecting portions 24, and a gap 26 is formed between the flapping wing 22 and the bracket 21 except the connecting portion 24,
  • the flapping wings 22 can vibrate up and down depending on the connecting portion 24 , and the width of the connecting portion 24 should not be too wide so that it has a certain degree of elasticity.
  • the cutting hole 25 may be present as part of the recess 26 .
  • the connecting portion 24 is connected to the vertical side support body 211 and at a position close to the lateral side support body 212 .
  • the size of the flapping wing 22 is very small, so it is preferable to adopt a design scheme of a pair of connecting parts 24 so as not to fall off during vibration.
  • the connecting portion 24 can also be a single design, at this time, the connecting portion 24 needs to have a certain width, and the gap 26 and the cutting hole 25 are connected as one .
  • the flapping wing 22 can also be connected as a whole with the lateral support body 212 of the support 21 through the connecting portion 24.
  • This embodiment is not a preferred solution because it does not follow the direction of the connecting portion 24 on the elastic fulcrum. direction of extension, resulting in easy breakage.
  • the function of the ribs 224 is to maintain the consistency of the vibrating wing 22 when it vibrates up and down, even when the vibrating wing 22 vibrates up and down, both lateral sides maintain a consistent flatness vibration to avoid uneven vibration.
  • the expression form of the rib 222 can be a whole, and the area is larger than half of the area of the flap 22, or the rib 222 exists in multiple forms to ensure the consistency of the vibration of the flap 22 as a principle.
  • the membrane 23 includes a wing body 231 thermoformed and bonded on the lower surface of the flap 22 and the bracket 21 , a runway 232 pressed upward from the wing body 231 into the space 26 , and a running track 232 formed from the wing body 231
  • the rib adhering portion 233 on the lower surface of the rib 222 is attached upward.
  • the wing body 231 is pierced with a through hole 234 corresponding to the connecting hole 223 of the flapping wing 22 , and the wing body 231 is formed through a hole 234 corresponding to the opening 224 of the flapping wing 22 to communicate with the upper chamber S1 and the lower cavity.
  • the inner diameter of the through hole 234 is consistent with the inner diameter of the connecting hole 223 , and the pitch of the flow holes 235 is much smaller than the pitch of the openings 224 .
  • the lower side of the cutting hole 25 between the flapping wing 22 and the bracket 21 is adhered and sealed by the film 23 .
  • the top of the runway 232 protrudes from the bracket 21 to a certain distance from the upper surface of the flap 22 so that the flap 22 is connected by the membrane 23 when vibrating up and down and provides a vibration stroke.
  • the bracket 21 and the vibrating wing 22 of the conventional diaphragm 20 are of a split structure.
  • the membrane 23 is hot-pressed, the membrane 23 is hot-pressed on the bracket 21 and then the The vibrating wing 22 is attached to the upper side of the film 23 and overlaps with the bracket 21 at one end in the longitudinal direction.
  • the manufacturing process is complicated and the defective rate is high.
  • brackets 21 and vibrating wings 22 are punched and formed into a number of true and false 21 and vibrating wings 22 connected by strips.
  • the film 23 is once thermoformed on the support 21 and the flapping wing 22 connected together by several material strips, and then the film 23 outside the support 21 is cut off by laser cutting, and at the same time, it is ironed with a laser or a hot needle.
  • the through holes 234 and the flow holes 235 are formed in the form of holes, and the diaphragm 20 is manufactured by removing the cut film 23 .
  • the vibration film 20 of the present application stamps the support 21 and the vibrating wing 22 integrally, and forms a gap 26 between the support 21 and the vibrating wing 22 for the film 23 to form a runway 232 , and the The connecting part 24 connects the vibrating wing 22 to the bracket 21 and provides a certain holding force.
  • the structure of the vibrating wing in this application is simple, and the stamping process and thermoforming process are simplified, which can effectively improve the yield and reduce the manufacturing cost. .
  • FIG. 2 Please continue to refer to FIG. 2, FIG. 3, and FIG.
  • the magnetic unit 31 includes an iron core with a longitudinally penetrating receiving space 3113 , a first magnet 313 and a second magnet 314 respectively bonded to the upper and lower sides of the receiving space 3113 .
  • 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 in a plate-like structure and face each other at a distance from the cavity 315, so 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 accommodation space 3113 is formed by the first iron core 311 and the second iron core 312 .
  • the first iron core 311 includes a bottom wall 3111 and vertical walls 3112 extending upward from lateral sides of the bottom wall 3111 .
  • the first iron core 311 is substantially in a U-shaped structure
  • the bottom wall 3111 includes an inner surface 3115 of the bottom wall bonded with the second magnet 314, and the vertical wall 3112 includes a surface 3115 bonded with the second iron core.
  • 312 the vertical wall top surface 3114 that fits and is welded together.
  • the second iron core 312 has a plate-like structure, and its width is larger than that of the first magnet 313.
  • the second iron core 312 includes a top wall 3121, and the top wall 3121 includes The inner surfaces 3122 of the top walls come together.
  • the transverse widths of the first magnet 313 and the second magnet 314 are smaller than the transverse width of the receiving 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 a known technology, and will not be repeated here.
  • the reed 33 has a U-shaped structure, and the reed 33 includes a fixed part 331, a tightening part 332 formed by reversely bending from one longitudinal end of the fixed part 331, and a tension part 332 formed by horizontally extending from the tightening part 332.
  • the vibrating part 333 located below the fixing part 331 and the extension part 334 extending forward from the vibrating part 333 are formed.
  • the fixing part 331 is fixed on the upper surface of the iron core by laser welding, that is, the free end side of the fixing part 331 is attached to the upper surface of the second iron core 312 and at the joint
  • the sides of the fixed part 331 are fixed together by welding, the side of the fixed part 331 close to the tension part 332 is suspended above the coil 32, and the vibrating part 333 enters the first magnet 313 and the first magnet 313 from the coil hole 322.
  • the cavity 315 between the second magnets 314 is in a suspended state.
  • the extension part 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 part 334 , and the connecting rod 34 The other end passes through the connection hole 223 and the through hole 234 and at least partly enters the upper chamber S1, and glue is dispensed in the connection hole 223 and the through hole 234 to fix one end of the connecting rod 34 on the on the diaphragm 20 .
  • the assembly method of the motor assembly 30 includes the following steps:
  • glue is applied to the surfaces of the first magnet 313 and the second magnet 314, and then the first magnet 313 is adhered to the inner surface 3122 of the top wall of the second iron core 312, The second magnet 314 is adhered to the inner surface 3115 of the bottom wall of the first iron core 311; then, curing is carried out, and the curing can be carried out by means of light or the like.
  • This step can be accomplished using an automated process.
  • the width of the first iron core 311 is consistent with the width of the second iron core 312, and the two side edges of the second iron core 312 are attached to the top surface 3114 of the vertical wall and on the second iron core.
  • the corresponding position on the upper surface of 312 is fixed by spot welding.
  • the vibration part 332 is suspended in the cavity 315 between the coil hole 322 and the first magnet 313 and the second magnet 314, and the extension part 334 protrudes from the magnet.
  • the outer side of the unit 31, the fixing part 331 is supported on the upper surface of the second iron core 312 and fixed by welding.
  • the tightening portion 332 is located outside the coil 32 .
  • the motor assembly 30 of the present application divides the iron core of the magnetic unit 31 into independent first iron cores 311 and second iron cores 312, so that the first magnets 313 and the second magnets 314 are glued together first. Bonded to the second iron core 312 and the first iron core 311, and then the second iron core 312 and the first iron core 311 are welded and fixed, thus avoiding the conventional magnets that can only be bonded longitudinally. This leads to the problem that the bonding is not firm and automatic assembly cannot be realized.
  • the welding piece 40 includes a welding piece 41 bonded to the longitudinal side of the housing 10, a lead hole 411 opened on the welding piece 41 and connected to the lead outlet 123, and the lead wire 323 of the coil 32 is welded. Solder 42 on the solder pad 41 .
  • the working principle of the moving iron unit of the present application is as follows.
  • the motor assembly 30 is made to generate magnetism, and the vibrating part 33 of the reed 30 vibrates up and down, and the connecting rod 34 drives the The vibrating wings 22 of the diaphragm 20 vibrate up and down to generate sound signals in the upper cavity S1 and pass through the sound outlet 133 .
  • This principle is a prior art and will not be repeated here.
  • the assembly of the moving iron unit of the present application includes the following steps:
  • the assembly of the motor assembly 30 is carried out with reference to the aforementioned method.
  • the surface of the lower shell 12 can be coated with glue, and then the motor assembly 30 is bonded downward to the surface of the lower shell 12; Specifically, the lower surface of the first iron core 311 is bonded to the lower shell 12 .
  • the lower surface 114 of the frame body 111 of the middle frame 11 is attached to the upper surface of the lower casing side wall 122 and pre-fixed by spot welding at a part of the joint.
  • the outer dimension of the bracket 21 is consistent with the outer dimension of the frame body 111 , and after the two are bonded together, the junction of the frame body 111 and the surface of the bracket 21 is pre-welded and fixed from the outer periphery.
  • the connecting rod 34 extends from the connection hole 223 and the through hole 234 of the diaphragm 20 to the upper side of the diaphragm 20 .
  • the diaphragm 20 can be directly bonded and fixed in the middle frame 11 without clamping the diaphragm 20 by the middle frame 11 and the upper shell 13, that is, the traditional middle frameless structure,
  • the vibrating membrane 20 is directly bonded in the upper case, but this step causes difficulty in dispensing glue and cannot be produced automatically.
  • the bottom surface of the upper shell side wall 132 of the upper shell 13 is attached to the upper surface of the bracket 21 and fixed by pre-welding from the outer periphery.
  • the position of the laser welding includes the position of the joint between the lower shell 12 and the bottom of the frame body 111, the position of the joint between the frame body 111 and the bracket 21, and the position of the joint between the bracket 21 and the upper shell 13. Continuous welding is carried out by means of multiple lasers and rotating the moving iron unit to achieve sealing of each junction, so that the upper cavity S1 and the lower cavity S2 are kept in a relatively sealed state.
  • the moving iron unit and its manufacturing method of the present application by dividing the shell 10 into independent lower shell 12, middle frame 11 and upper shell 13, greatly reduces the depth of the lower shell 12, and then can realize the motor assembly 30 It is automatically assembled in the lower shell 12 , and at the same time, it is convenient for the connecting rod 34 to be automatically dispensed and fixed in the connecting hole 223 and the through hole 234 after the diaphragm 20 is assembled.
  • This design scheme greatly improves the automation capability, greatly improves the product assembly efficiency and reduces the manufacturing cost.
  • the joints of the lower shell 12, the middle frame 11, the support 21 of the diaphragm 20 and the upper shell 13 are fixed by pre-welding a small number of points, and finally the outer periphery of the joint is sealed by continuous laser welding. .
  • the present application also includes a receiver, and the receiver includes the moving iron unit.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

一种振膜，包括支架、振翼及热成型于所述支架与振翼表面上的膜，所述支架与所述振翼采用同一个金属板材冲压而成，所述振翼位于所述支架内并通过连接部连接为一体，所述振翼与所述支架之间形成有空隙，所述膜包括贴合于所述支架与振翼一侧表面上的模体及成型于所述空隙内的跑道。本申请还包括一种马达组件及动铁单元。

Description

振膜、马达组件及动铁单元 技术领域
本申请涉及音频通信领域，尤指一种振膜、马达组件及动铁单元。
背景技术
真无线耳机越来越多地被应用于人们的日常生活中，有效摆脱了有线耳机的限制与不方便，产业规模正在不断急剧扩大中。动铁单元是一种应用于耳机及助听器内的电声转换单元，用于将电信号转换成声音信号，但是动铁单元尺寸极小，产品组装极其困难，必须要通过自动化的方式进行组装、测试。中华人民共和国第201721263601.7号专利申请揭示了一种动铁受话器，包括金属外壳、组装于金属外壳内的马达组件、将所述金属壳体区分成前腔和后腔的振膜及连接所述马达组件的簧片与振膜的连接针。所述金属外壳分为上下两部分，包括上壳与下壳，所述振膜夹持于所述上壳与下壳之间并通过点胶或焊接固定，在组装时，所述下壳的深度较深，不便于自动化组装所述马达组件及焊接作业。所述金属外壳采用点胶方式密封，存在密封不严的问题，导致漏音，影响音质效果。所述振膜包括支架、振翼及膜，所述膜通过热压成型将所述振翼连接于所述支架上，该工艺的热压成型方案复杂，良率低。所述马达组件包括“回”字形铁芯、置于所述铁芯内上下两侧的一对磁体、粘合在所述铁芯纵向一端的线圈及至少部分穿越所述线圈与一对所述磁体之间的簧片，所述磁体需要粘结在所述铁芯内部，在组装时无法实现自动化，或者黏胶无法稳定将所述磁体固定于所述铁芯内，容易松脱而导致质量问题。
发明内容
鉴于此，有必要提供一种结构更为简单，且便于制造的振膜、马达组件及动铁单元。
为解决上述技术问题，本申请提供了一种振膜，包括支架、振翼及热成型于所述支架与振翼表面上的膜，所述支架与所述振翼采用同一个金属板材冲压 而成，所述振翼位于所述支架内并通过连接部连接为一体，所述振翼与所述支架之间形成有空隙，所述膜包括贴合于所述支架与振翼一侧表面上的模体及成型于所述空隙内的跑道。
为解决上述技术问题，本申请还提供了一种马达组件，包括磁单元、粘结于所述磁单元纵向一端的线圈及簧片，所述磁单元包括相互独立的第一铁芯、第二铁芯、第一磁体及第二磁体，所述第一铁芯包括底壁及自所述底壁横向两侧向上延伸形成的竖壁，所述第一磁体粘结固定于第二铁芯的下表面上，所述第二磁体粘结固定于所述第一铁芯的底壁内表面上，粘结有所述第一磁体的第二铁芯焊接固定于一对所述竖壁上，所述第一磁体与第二磁体相对设置并在中间形成有腔体，所述线圈包括粘结于所述第一铁芯与第二铁芯纵向一端的线圈体及纵向贯穿对应所述腔体的线圈孔，所述簧片包括固定端及自所述固定端延伸并悬置于所述线圈孔与腔体内的振动部。
为解决上述技术问题，本申请还提供了一种动铁单元，包括马达组件、组装所述马达组件于内的外壳及与所述马达组件通过连杆连接的振膜，所述马达组件包括磁单元、粘结于所述磁单元纵向一端的线圈及簧片，所述磁单元包括相互独立的第一铁芯、第二铁芯、第一磁体及第二磁体，所述第一磁体粘结固定于第二铁芯的下表面上，所述第二磁体粘结固定于所述第一铁芯的底壁内表面上，所述第一铁芯与所述第二铁芯固定在一起，所述第一磁体与第二磁体相对设置并在中间形成有腔体，所述线圈包括粘结于所述第一铁芯与第二铁芯纵向一端的线圈体及纵向贯穿对应所述腔体的线圈孔，所述簧片包括固定端、自所述固定端延伸并悬置于所述线圈孔与腔体内的振动部及自所述振动部延伸出所述磁单元外的外延部，所述振膜包括支架、振翼及热成型于所述支架与振翼表面上的膜，所述支架与所述振翼采用同一个金属板材冲压而成，所述振翼位于所述支架内并通过连接部连接为一体，所述振翼与所述支架之间形成有空隙，所述膜包括贴合于所述支架与振翼一侧表面上的模体及成型于所述空隙内的跑道，所述外壳包括下壳、中框及上壳，所述振膜与所述上壳围设成上腔， 所述振膜、中框与下壳围设成下腔，所述马达组件固定于所述下壳内，所述中框套设于所述马达组件外并与所述下壳衔接固定，所述连杆一端焊接于所述簧片的外延部上，所述连杆的另一端固定于所述振膜上。
本申请的振膜在制造过程中，若干支架与振翼冲压成型后为通过料带连接的若干个真假与振翼，此时不需要裁切所述支架，直接将所述膜一次热成型于若干所述料带连接在一起的支架与所述振翼上，随后，通过激光切割的方式切除所述支架外的膜；相较于传动支架与振翼分离结构，此方案在热成型制造时更为简单，方便，同时使良率大大提升。
本申请马达组件将所述磁单元的铁芯分割成独立第一铁芯与第二铁芯，以便于将所述第一磁体与所述第二磁体通过胶水分别先粘结于所述第二铁芯与所述第一铁芯上，再将所述第二铁芯与所述第一铁芯焊接固定，如此避免了传统只能纵向粘结磁体而导致粘结不牢固，无法实现自动化组装的问题。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本申请动铁单元的立体组合图；
图2为本申请动铁单元的部分立体分解图；
图3为本申请动铁单元的完整立体分解图；
图4为本申请动铁单元的振膜的立体图；
图5为本申请动铁单元的振膜的立体分解图；
图6为沿图5所示B-B虚线的剖视图；
图7为本申请动铁单元的马达组件的立体组合图；
图8为沿图7所示C-C虚线的剖视图；
图9为沿图1所示A-A虚线的剖视图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。
本申请以图1所示X方向为纵向方向，以Y方向为横向方向，以Z方向为垂直方向。
请继续参阅图1至图3、图9所示，本申请动铁单元包括外壳10、将所述外壳10分隔成上腔S1与下腔S2的振膜20、组装于所述外壳10的下腔S2内的马达组件30及设于所述外壳10纵向一端的焊接件40。
所述外壳10包括中框11、分别位于所述中框11上下两侧的上壳13与下壳12，所述振膜20夹持于所述中框11与所述上壳13之间，所述振膜20与所述上壳13围设成所述上腔S1。所述振膜20与所述中框11、下壳12围设成所述下腔S2。
所述中框11包括框体111及上下贯通并被所述框体11包围的空腔112。所述框体111包括上表面113与下表面114。所述框体111大致呈长方体结构。
所述下壳12包括下壳体121、自所述下壳体121外周向上折弯形成的下壳侧壁122及开设于所述下壳12纵向第一端的引线出口123。所述下壳侧壁122的上表面与所述中框11的下表面114对应贴合并通过在外周焊接的方式固定在一起。
所述上壳13包括上壳体131、自所述上壳体131外周向下折弯形成的上壳侧壁132及开设于所述上壳13纵向第二端的出音口133。所述上壳侧壁132与所述中框11的上表面113夹持所述振膜20并从外周焊接固定在一起。
请继续参阅图3至图6所示，所述振膜20包括支架21、与所述支架21连接为一体振翼22及热压成型于所述支架21与所述振翼22上的膜23。所述 支架21包括纵侧支架体211与横侧支架体212。所述振翼22包括翼体221、自所述翼体221向上冲压形成的凸筋222、上下贯穿所述翼体221纵向第一端的连接孔223及上下贯穿所述翼体221纵向第二端的开孔224。所述支架21与所述振翼22通过一块金属板一次冲压而成，所述振翼22的纵向第二端通过连接部24与所述支架21的纵侧支架体211连接为一体，所述连接部24优选为一对，且在一对所述连接部24之间切除形成有切割孔25，所述振翼22与所述支架21之间除所述连接部24外形成有空隙26，所述振翼22依托所述连接部24可上下振动，所述连接部24的宽度不宜太宽以使其具备一定的弹性。所述切割孔25可以作为所述空隙26的一部分存在。所述连接部24连接于所述纵侧支架体211上且靠近所述横侧支架体212的位置处。
所述振翼22的尺寸非常小，所以，优选采用一对连接部24的设计方案使其不至于在振动时脱落。当然，在一实施例中，所述连接部24也可以是单独一个的设计，此时，需要所述连接部24具有一定的宽度，而所述空隙26与所述切割孔25则连通为一体。
所述振翼22也可以通过所述连接部24与所述支架21的横侧支架体212连接为一体，此实施例为非优选方案，因其在弹性支点上不顺从所述连接部24的延伸方向，而导致容易折断。所述凸筋224的作用在于保持所述振翼22在上下振动时的一致性，即使所述振翼22上下振动时，横向两侧保持一致的平面度振动，避免振动的不均匀。所述凸筋222的表现形式可以是一个整体，且面积大于所述振翼22面积的一半以上，或者所述凸筋222以多个的形式存在，以保证所述振翼22振动的一致性为原则。
所述膜23包括热成型粘合于所述振翼22与支架21下表面上的翼体231、自所述翼体231向上压入所述空隙26上方的跑道232及自所述翼体231向上 贴合于所述凸筋222下表面上的凸筋贴合部233。所述翼体231对应所述振翼22的连接孔223处穿设有通孔234，所述翼体231对应所述振翼22的开孔224处贯穿形成有联通所述上腔S1与下腔S2的流量孔235。所述通孔234的内径与所述连接孔223的内径保持一致，所述流量孔235的孔距远小于所述开孔224的孔距。所述振翼22与所述支架21之间的切割孔25下侧被所述膜23所贴合密封。所述跑道232的顶部凸出所述支架21与所述振翼22的上表面一定距离以使所述振翼22在上下振动时通过所述膜23连接并提供振动行程。
传统振膜20的所述支架21与所述振翼22为分体式结构，在热压成型所述膜23时，再将所述膜23热压于所述支架21上后还要再将所述振翼22贴于所述膜23上侧并在纵向一端部分与所述支架21重合，制作工艺复杂，不良率高。
本申请的振膜20在制造过程中，若干支架21与振翼22冲压成型后为通过料带连接的若干个真假21与振翼22，此时不需要裁切所述支架，直接将所述膜23一次热成型于若干所述料带连接在一起的支架21与所述振翼22上，随后，通过激光切割的方式切除所述支架21外的膜23，同时采用激光或热针烫孔的方式形成所述通孔234与流量孔235，去掉切割下来的膜23即完成所述振膜20的制造。
本申请振膜20将所述支架21与所述振翼22一体冲压成型，并在所述支架21与所述振翼22之间形成供所述膜23成型跑道232的空隙26，而所述连接部24将所述振翼22连接于所述支架21上并提供一定的保持力，本申请振翼结构简单，冲压工艺、热成型工艺均实现了简化，可有效提高良率并降低制造成本。
请继续参阅图2、图3、图7至图9所示，所述马达组件30包括磁单元 31、粘结于所述磁单元31纵向一侧的线圈32、穿越并悬置于所述磁单元31与所述线圈32内的簧片33及连接所述簧片33与所述振膜20的连杆34。
所述磁单元31包括设有纵向贯通的收容空间3113的铁芯、分别粘结于所述收容空间3113上下两侧的第一磁体313与第二磁体314。所述第一磁体313与所述第二磁体314之间形成有腔体315，所述第一磁体313与所述第二磁体314呈板状结构且间隔所述腔体315相互面对，所述第一磁体313、第二磁体314均处于所述铁芯所包围。所述铁芯包括第一铁芯311与第二铁芯312，所述收容空间3113通过所述第一铁芯311与所述第二铁芯312围合而成。
所述第一铁芯311包括底壁3111及自所述底壁3111横向两侧向上延伸形成的竖壁3112。所述第一铁芯311大致呈U型结构，所述底壁3111包括与所述第二磁体314粘合在一起的底壁内表面3115，所述竖壁3112包括与所述第二铁芯312贴合并焊接在一起的竖壁顶面3114。所述第二铁芯312呈板状结构，其宽度大于所述第一磁体313的宽度，所述第二铁芯312包括顶壁3121，所述顶壁3121包括与所述第一磁体313粘合在一起的顶壁内表面3122。所述第一磁体313与所述第二磁体314的横向宽度小于所述收容空间3113的横向宽度。
所述线圈32包括线圈体321、纵向延伸且对应所述腔体315的线圈孔322及一对引线323。所述线圈32结构为习知技术，此处不再赘述。
所述簧片33呈U型结构，所述簧片33包括固定部331、自所述固定部331纵向一端反向折弯形成的拉紧部332、自所述拉紧部332水平延伸形成的位于所述固定部331下方的振动部333及自所述振动部333继续前向延伸形成的外延部334。所述固定部331通过激光焊的方式固定于所述铁芯的上表面，即所述固定部331的自由端一侧贴合于所述第二铁芯312的上表面并在所述结 合处的侧面焊接固定在一起，所述固定部331靠近所述拉紧部332一侧则悬置于所述线圈32上方，所述振动部333自所述线圈孔322进入所述第一磁体313与所述第二磁体314之间的腔体315内并处于悬置状态。所述外延部334延伸出所述磁单元31外侧并位于所述振膜20的连接孔223与通孔234下方，所述连杆34一端焊接于所述外延部334表面，所述连杆34另一端穿过所述连接孔223与所述通孔234并至少部分进入所述上腔S1内，在所述连接孔223与所述通孔234内点胶将所述连杆34一端固定于所述振膜20上。
所述马达组件30的组装方法包括如下步骤：
S101、将所述第一磁体313与第二磁体314分别粘结于第二铁芯312与所述第一铁芯311上并固化；
本步骤中，将胶水涂敷于所述第一磁体313与所述第二磁体314表面，再将所述第一磁体313粘合于所述第二铁芯312的顶壁内表面3122上，将所述第二磁体314粘合于所述第一铁芯311的底壁内表面3115上；随后，进行固化，固化可以采用光照等方式进行。此步骤可使用自动化工艺完成。
S102、将所述第一磁体313与所述第二铁芯312的组合体覆盖于所述第一铁芯311的竖壁3112竖壁顶面3114上并焊接固定；
所述第一铁芯311的宽度与所述第二铁芯312的宽度一致，所述第二铁芯312两侧边缘贴合于所述竖壁顶面3114上并在所述第二铁芯312上表面对应位置处点焊固定。
S103、将所述线圈32粘合于所述磁单元31纵向一端，并使所述腔体315与所述线圈孔322相互对应；
S104、将所述簧片33的振动部333插入所述线圈孔322与所述腔体315内并焊接固定所述固定部331；
本步骤中，所述振动部332悬置于所述线圈孔322与所述第一磁体313与所述第二磁体314之间的腔体315内，所述外延部334凸出于所述磁单元31的外侧，所述固定部331支撑于所述第二铁芯312的上表面并焊接固定，所述固定部331位于所述线圈32上侧的部分不与所述线圈32接触并处于悬置状态，所述拉紧部332位于所述线圈32外侧。在组装时，所述铁芯及簧片33均可以在冲压成型时连接料带，通过料带实现自动化组装。
本申请马达组件30将所述磁单元31的铁芯分割成独立第一铁芯311与第二铁芯312，以便于将所述第一磁体313与所述第二磁体314通过胶水分别先粘结于所述第二铁芯312与所述第一铁芯311上，再将所述第二铁芯312与所述第一铁芯311焊接固定，如此避免了传统只能纵向粘结磁体而导致粘结不牢固，无法实现自动化组装的问题。
所述焊接件40包括粘结于所述外壳10纵向一侧的焊片41、开设于所述焊片41上并连通所述引线出口123的引线孔411及将所述线圈32的引线323焊接于所述焊片41上的焊料42。
本申请动铁单元的工作原理如下，当电信号通过所述线圈32时，使所述马达组件30产生磁性，使所述簧片30的振动部33上下振动并通过所述连杆34带动所述振膜20的振翼22上下振动，在所述上腔S1产生声音信号并通过所述出音口133穿出，该原理为现有技术，此处不再赘述。
本申请动铁单元的组装包括如下步骤：
S201、将所述组装好的马达组件30粘结于所述下壳12内；
所述马达组件30的组装参照前述方法进行，此步骤中可以在所述下壳12的表面先涂覆胶水，再将所述马达组件30向下粘结于所述下壳12的表面上；具体地，所述第一铁芯311下表面粘结于所述下壳12上。
S202、将所述中框11套入所述马达组件30外并与所述下壳12贴合并预焊接固定；
本步骤中，所述中框11的框体111的下表面114贴合于所述下壳侧壁122的上表面并在两者结合处部分位置点焊预固定。
S203、将所述连杆34一端焊接于所述外延部334上，随后将所述振膜20覆盖于所述中框11上侧使所述框体111上表面113与所述支架21下表面贴合并预焊接固定；
本步骤中，所述支架21的外形尺寸与所述框体111的外形尺寸一致，二者贴合后，所述框体111与所述支架21的表面结合处从外周预焊接固定。此步骤中，所述连杆34自所述振膜20的连接孔223与通孔234延伸至所述振膜20的上侧。
本步骤中，所述振膜20可以是直接粘接固定于所述中框11内，而无须通过所述中框11与上壳13夹持所述振膜20，即传统无中框结构，直接将振膜20粘结于所述上壳内，但此步骤造成点胶困难，无法自动化生产。
S204、点胶将所述连杆34一端固定于所述连接孔223与通孔234内并密封所述连接孔223；
S205、将所述上壳13覆盖于所述振膜20上侧并与所述支架21预焊接固定；随后从外周将所述下壳12、中框11、振膜20的支架21与上壳13的结合处外周通过激光焊焊接固定并密封；
所述上壳13的上壳侧壁132的底面贴合于所述支架21的上表面并从外周预焊接固定。激光焊接的部位包括下壳12与框体111底部的结合处位置、框体111与所述支架21的结合处位置、所述支架21与所述上壳13的结合处位置，激光焊接时采用多路激光并旋转所述动铁单元的方式进行连续焊接以使各 结合处实现密封，使所述上腔S1与下腔S2保持相对密封的状态。
S206、将所述焊接件40的焊片41粘结于所述外壳10设有所述引线出口123一端，同时将所述线圈32的一对引线323焊接于所述焊片41上形成所述焊料42。
本申请动铁单元及其制造方法，通过将外壳10分割成独立的下壳12、中框11与上壳13，极大降低了所述下壳12的深度，进而可以实现所述马达组件30自动化组装于所述下壳12内，同时兼顾连杆34在所述振膜20组装后方便自动化点胶固定所述连杆34于所述连接孔223与通孔234内。本设计方案大大提升了自动化能力，极大地提升了产品组装效率并降低了制造成本。
同时，所述下壳12、中框11、振膜20的支架21与上壳13的结合处先采用少量点位预焊接固定的方式，最后再在结合处外周通过连续激光焊的方式实现密封。
本申请还包括一种受话器，所述受话器包括所述动铁单元。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本发明的优选的实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (18)

  1. 一种振膜，包括支架、振翼及热成型于所述支架与振翼表面上的膜，其特征在于，所述支架与所述振翼采用同一个金属板材冲压而成，所述振翼位于所述支架内并通过连接部连接为一体，所述振翼与所述支架之间形成有空隙，所述膜包括贴合于所述支架与振翼一侧表面上的模体及成型于所述空隙内的跑道。
  2. 如权利要求1所述的振膜，其特征在于，所述支架包括一对纵向支架体与一对横向支架体并相互连接，所述振翼位于所述纵向支架体与横向支架体内，所述振翼纵向一端通过连接部连接于一个所述纵向支架体上，所述振翼与所述支架除设有连接部的纵向一侧外，横向两侧及与所述连接部相对的另一纵向侧均设有所述空隙。
  3. 如权利要求2所述的振膜，其特征在于，所述连接部为一对，分别连接于一个所述纵向支架体的横向两侧，并连接所述振翼的纵向一侧，一对所述连接部之间切除形成有将所述支架与振翼分隔的切割孔。
  4. 如权利要求2所述的振膜，其特征在于，所述连接部为一个，分别连接所述纵向支架体与所述振翼纵向一端的中间部分，所述连接部横向两侧切割形成有与所述空隙连通的切割孔。
  5. 如权利要求3所述的振膜，其特征在于，所述振翼至少部分冲压形成向上或向下凸出的凸筋，所述膜包括热成型贴合于所述支架与振翼表面上的膜体，所述膜体包括贴合于所述凸筋表面的凸筋贴合部。
  6. 如权利要求3所述的振膜，其特征在于，所述跑道是自所述膜体从所述空隙第一侧压入第二侧形成的，所述跑道凸出于所述支架与振翼的第二侧表面。
  7. 如权利要求6所述的振膜，其特征在于，热压成型所述膜时，若干所述支架与振翼通过料带连接为一体，并通过一张膜热压成型于若干所述支架与振翼上，随后通过激光切割切除边缘的膜。
  8. 一种马达组件，包括磁单元、粘结于所述磁单元纵向一端的线圈及簧片， 其特征在于，所述磁单元包括相互独立的第一铁芯、第二铁芯、第一磁体及第二磁体，所述第一铁芯包括底壁及自所述底壁横向两侧向上延伸形成的竖壁，所述第一磁体粘结固定于第二铁芯的下表面上，所述第二磁体粘结固定于所述第一铁芯的底壁内表面上，粘结有所述第一磁体的第二铁芯焊接固定于一对所述竖壁上，所述第一磁体与第二磁体相对设置并在中间形成有腔体，所述线圈包括粘结于所述第一铁芯与第二铁芯纵向一端的线圈体及纵向贯穿对应所述腔体的线圈孔，所述簧片包括固定端及自所述固定端延伸并悬置于所述线圈孔与腔体内的振动部。
  9. 如权利要求8所述的马达组件，其特征在于，所述第一铁芯呈U形结构，所述第二铁芯呈板状结构，在所述第二铁芯焊接于所述第一铁芯上时，板状结构的所述第一磁体与第二磁体分别先粘结固定于第二铁芯与第一铁芯上。
  10. 如权利要求9所述的马达组件，其特征在于，所述第一磁体与第二磁体的宽度小于所述第二铁芯与第一铁芯底壁的宽度，所述第二铁芯横向两侧底面贴合于一对所述竖壁上表面，并从横向外侧焊接固定二者的结合处。
  11. 如权利要求10所述的马达组件，其特征在于，所述簧片的固定部是自所述振动部一端反向折弯延伸形成的固定于所述第二铁芯上表面上的，并在折弯位置处形成拉紧部，所述固定部至少部分悬置于所述线圈上方，所述拉紧部位于所述线圈纵向外侧，所述振动部自由端继续向外延伸出所述磁单元并形成外延部。
  12. 如权利要求11所述的马达组件，其特征在于，所述固定部与所述第二铁芯通过从外周或顶面点焊的方式固定。
  13. 一种动铁单元，其特征在于，包括马达组件、组装所述马达组件于内的外壳及与所述马达组件通过连杆连接的振膜，所述马达组件包括磁单元、粘结于所述磁单元纵向一端的线圈及簧片，所述磁单元包括相互独立的第一铁芯、第二铁芯、第一磁体及第二磁体，所述第一磁体粘结固定于第二铁芯的下表面上，所述第二磁体粘结固定于所述第一铁芯的底壁内表面上，所述第一铁芯与所述第二铁芯固定在一起，所述第一磁体与第二磁体相对设置并在中间形成有 腔体，所述线圈包括粘结于所述第一铁芯与第二铁芯纵向一端的线圈体及纵向贯穿对应所述腔体的线圈孔，所述簧片包括固定端、自所述固定端延伸并悬置于所述线圈孔与腔体内的振动部及自所述振动部延伸出所述磁单元外的外延部，所述振膜包括支架、振翼及热成型于所述支架与振翼表面上的膜，所述支架与所述振翼采用同一个金属板材冲压而成，所述振翼位于所述支架内并通过连接部连接为一体，所述振翼与所述支架之间形成有空隙，所述膜包括贴合于所述支架与振翼一侧表面上的模体及成型于所述空隙内的跑道，所述外壳包括下壳、中框及上壳，所述振膜与所述上壳围设成上腔，所述振膜、中框与下壳围设成下腔，所述马达组件固定于所述下壳内，所述中框套设于所述马达组件外并与所述下壳衔接固定，所述连杆一端焊接于所述簧片的外延部上，所述连杆的另一端固定于所述振膜上。
  14. 如权利要求13所述的动铁单元，其特征在于，所述第一铁芯包括底壁及自所述底壁横向两侧向上延伸形成的竖壁，粘结有所述第一磁体的第二铁芯焊接固定于一对所述竖壁上。
  15. 如权利要求14所述的动铁单元，其特征在于，所述下壳包括下壳体及自所述下壳体外周向上弯折形成的下壳侧壁，所述下壳侧壁纵向第一端开设有引线出口，所述马达组件固定于所述下壳内，所述上壳包括上壳体、自所述上壳体外周向下折弯形成的下壳侧壁及开设于下壳侧壁纵向第二端上的出音口；所述中框包括框体及位于所述框体内并上下贯穿的空腔，所述框体的下表面与所述下壳侧壁上表面贴合固定，所述支架夹持于所述框体与所述上壳侧壁之间并固定。
  16. 如权利要求15所述的动铁单元，其特征在于，所述马达组件固定于所述下壳内后，将所述中框从上向下套入所述马达组件外周并使所述中框的框体底面与所述下壳侧壁的顶面贴合，通过不连续点焊的方式预固定所述中框与下壳，所述振膜置放于所述中框上方，将所述上壳覆盖于所述振膜上侧，所述振膜的支架下表面贴合所述框体上表面，所述支架上表面贴合所述上壳侧壁的下表面，同时通过不连续点焊的方式将所述中框、振膜与上壳进行预固定。
  17. 如权利要求16所述的动铁单元，其特征在于，所述外壳的下壳、中框、振膜的支架与上壳之间的结合处通过连续激光焊的方式进行密封焊接，焊接时，同时采用多束激光同时焊接，转动所述外壳实现连续焊接。
  18. 如权利要求17所述的动铁单元，其特征在于，所述振翼通过连接部连接于所述支架纵向一侧；除所述连接部外，所述支架与所述振翼之间形成有连续的空隙，所述膜包括贴合于所述支架与振翼一侧表面上的膜体、及压入所述空隙内并穿越至另一侧的跑道，所述振翼对应所述连杆位置处开设有连接孔，所述连杆一端位于所述连接孔内并点胶固定。
PCT/CN2022/087537 2021-07-28 2022-04-19 振膜、马达组件及动铁单元 WO2023005269A1 (zh)

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