CN113923566B - Voice coil preparation method, voice coil and loudspeaker - Google Patents
Voice coil preparation method, voice coil and loudspeaker Download PDFInfo
- Publication number
- CN113923566B CN113923566B CN202111415816.7A CN202111415816A CN113923566B CN 113923566 B CN113923566 B CN 113923566B CN 202111415816 A CN202111415816 A CN 202111415816A CN 113923566 B CN113923566 B CN 113923566B
- Authority
- CN
- China
- Prior art keywords
- voice coil
- wire
- conductive layer
- foil
- framework
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 15
- 239000011888 foil Substances 0.000 claims description 66
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 description 20
- 238000003466 welding Methods 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000011889 copper foil Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 241000710145 Tomato bushy stunt virus Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
-
- 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
- H04R31/006—Interconnection of transducer parts
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention relates to a voice coil preparation method, a voice coil and a loudspeaker, wherein the preparation method comprises the following steps: s1, attaching a conductive layer on a voice coil base material; s2, cutting off the voice coil base material to obtain a voice coil framework with a set length; s3, winding a voice coil wire on the voice coil framework; and S4, providing a guide wire and connecting the guide wire and the voice coil wire to the conductive layer together. According to the preparation method, the conducting layer is firstly attached to the voice coil base material, then the voice coil base material is cut, a plurality of small-size voice coil frameworks with the conducting layer are formed, and then winding and the like are carried out. The voice coil frameworks with the conductive layers can be obtained at one time by adopting a mode of firstly attaching the conductive layers and then cutting off, the conductive layers do not need to be manually attached one by one, and the working procedure time is saved.
Description
Technical Field
The invention relates to the technical field of audio equipment, in particular to a voice coil preparation method, a voice coil and a loudspeaker.
Background
The speaker is used as a transducer device for converting electric energy into acoustic energy in electronic components for sound emission, and generally includes a mechanical wave system, a magnetic circuit system, and the like. The voice coil is an important component of a mechanical wave system as a coil through which current passes in a loudspeaker. In general, a voice coil with a frame is used in a speaker, and when a current is applied to the voice coil in a magnetic circuit system, the voice coil receives an electromotive force, and the frame of the voice coil converts the electromotive force generated by the voice coil into mechanical wave radiation to be diffused to the outside.
Along with the trend of miniaturization development of electronic components, the space for accommodating a loudspeaker in the electronic components is reduced, and the small-sized loudspeaker is suitable for mounting a small-caliber voice coil. At present, the preparation mode of the small-caliber voice coil is generally to wind a voice coil wire on a framework and then paste copper foil and the like, and the voice coil is small in size, so that a large amount of manpower and working hours are required in the preparation process, and the preparation efficiency is low.
Disclosure of Invention
Accordingly, it is necessary to provide a voice coil manufacturing method, a voice coil, and a speaker, which address the problem of low voice coil manufacturing efficiency.
A voice coil preparation method comprises the following steps:
s1, attaching a conductive layer on a voice coil base material;
S2, cutting off the voice coil base material to obtain a voice coil framework with a set length;
s3, winding a voice coil wire on the voice coil framework;
and S4, providing a guide wire and connecting the guide wire and the voice coil wire to the conductive layer together.
In one embodiment, the voice coil substrate in step S1 is a sheet; before step S2, the voice coil base material to which the conductive layer is attached is wound into a tubular structure, forming the voice coil bobbin.
In one embodiment, the voice coil substrate in the step S1 is a tubular structure.
In one embodiment, before step S2, the method further includes: and covering an insulating layer on the conductive layer.
In one embodiment, the conductive layer includes a first foil and a second foil disposed in parallel, the voice coil wire has opposite ends, one end of the voice coil tube is connected with the first foil together with the guide wire, and the other end of the voice coil tube is connected with the second foil together with the guide wire.
A voice coil, comprising: the voice coil comprises a voice coil framework, a conducting layer and a voice coil wire, wherein the conducting layer is attached to the voice coil framework, the voice coil wire is wound on the voice coil framework, and the conducting layer is clamped between the voice coil framework and the voice coil wire.
In one embodiment, the length of the conductive layer is not less than the length of the voice coil former.
In one embodiment, one of the following is included:
the length direction of the conducting layer forms a set included angle with the central line direction of the voice coil framework;
the length direction of the conducting layer is parallel to the central line direction of the voice coil framework.
In one embodiment, the voice coil assembly further comprises an insulating layer attached to the conductive layer and located between the conductive layer and the voice coil wire.
A loudspeaker comprising a voice coil as claimed in any preceding claim, a magnetic circuit unit and a vibrating element, the voice coil being located within the magnetic circuit unit and connected to the vibrating element.
According to the preparation method of the voice coil, the conducting layer is firstly attached to the voice coil base material, then the voice coil base material is cut, a plurality of small-size voice coil frameworks with the conducting layer are formed, and then winding and the like are carried out. The voice coil frameworks with the conductive layers can be obtained at one time by adopting a mode of firstly attaching the conductive layers and then cutting off, the conductive layers do not need to be manually attached one by one, and the working procedure time is saved.
Drawings
Fig. 1 is a schematic structural diagram of an audio coil according to an embodiment of the present invention.
Fig. 2 is a structural view of an audio coil according to an embodiment of the present invention along an axial angle.
Fig. 3 is a schematic diagram of another structure of an audio coil according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a preparation flow of an audio coil according to an embodiment of the invention.
Fig. 5 is a schematic diagram of another process for manufacturing an audio coil according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings.
In the description of the present invention, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "inner," "outer," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium.
Example 1
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a voice coil according to an embodiment of the present invention, where the voice coil according to an embodiment of the present invention includes a voice coil frame 100, a conductive layer 200, a voice coil wire 300, and a guide wire 400, the conductive layer 200 is disposed on a surface of the voice coil frame 100, the voice coil wire 300 is wound on the voice coil frame 100, and the guide wire 400 is electrically connected to the conductive layer 200 together with the voice coil wire 300.
The voice coil bobbin 100 is used to support the voice coil wire 300. The voice coil bobbin 100 has a function of converting a driving force generated when the voice coil wire 300 is energized into mechanical vibration so that the degree of air density is changed to generate sound, in addition to providing support for the voice coil wire 300.
In the present embodiment, the length of the voice coil bobbin 100 is set according to the actually required wound length of the voice coil wire 300. The voice coil bobbin 100 may be made of paper tube PSV/glass fiber tube TIL/aluminum tube KASV/carbon fiber TBSV coated with insulating glue.
Referring to fig. 2, the voice coil wire 300 has opposite ends, and when the voice coil wire 300 is wound around the voice coil bobbin 100, the opposite ends serve as a positive end 310 and a negative end 320 of the voice coil. The wire of the voice coil wire 300 adopts an enameled wire, and is limited by the volume and mass requirements, and the diameter of a conductor part of the enameled wire is smaller. Since the voice coil wire 300 needs to be connected with a power supply line and the like and the radial dimension of the conductor portion thereof is small, guide wires 400 are respectively connected to the positive electrode end 310 and the negative electrode end 320 of the voice coil wire 300, and the voice coil wire is connected with the power supply line through the guide wires 400, so that the voice coil wire is prevented from being damaged in the installation process of the voice coil wire 300, and the electrical connection stability is improved. Current may be directed through the voice coil wire 300 by the guide wire 400.
Referring to fig. 2, the guide wire 400 includes a positive lead 410 and a negative lead 420 corresponding to the positive terminal 310 and the negative terminal 320 of the voice coil wire 300, the positive lead 410 being connected to the positive terminal 310, and the negative lead 420 being connected to the negative terminal 320. External current may flow into the voice coil wire 300 through the guide wire 400. The connection between the guide wire 400 and the voice coil wire 300 is performed by laser welding or the like.
Referring to fig. 1, the conductive layer 200 is located between the outer surface of the voice coil bobbin 100 and the voice coil wire 300. The opposite surfaces of the conductive layer 200 are respectively in contact with the voice coil bobbin 100 and the voice coil wire 300. The positive terminal 310 and the positive wire 410 of the voice coil wire 300 are electrically connected to the conductive layer 200, and similarly, the negative terminal 320 (not shown) and the negative wire 420 of the voice coil wire 300 are electrically connected to the conductive layer 200.
In this embodiment, the conductive layer 200 has a long strip structure, i.e., a sheet shape with a predetermined length.
The length of the conductive layer 200 is not less than the length of the voice coil bobbin 100, and the length of the conductive layer 200 refers to the length of the conductive layer 200. For example, as shown in fig. 1, when the length direction of the conductive layer 200 forms an angle with the length direction of the voice coil bobbin 100, the length of the conductive layer 200 is greater than the length of the voice coil bobbin 100. For example, as shown in fig. 3, when the length direction of the conductive layer 200 is parallel to the length direction of the voice coil bobbin 100, the length of the conductive layer 200 is equal to the length of the voice coil bobbin 100. Referring to fig. 1 and 3, the left end face of the conductive layer 200 and the left end face of the voice coil bobbin 100 are located in the same plane, and the right end face of the conductive layer 200 and the right end face of the voice coil bobbin 100 are located in the same plane.
The conductive layer 200 has good conductivity, and in this embodiment, the conductive layer 200 is made of copper foil, or other materials with good conductivity can be used. In this embodiment, the conductive layer 200 has a thickness of 0.018mm and a width of 1mm.
Referring to fig. 1 and 2 together, the conductive layers 200 are provided in two to be adapted to the positive and negative terminals 310 and 320 of the voice coil wire 300. Specifically, the conductive layer 200 includes a first foil 210 and a second foil 230, the first foil 210 and the second foil 230 are the same in shape and size, and the first foil 210 and the second foil 230 are each 1mm in width. The first foil 210 and the second foil 230 are disposed on the voice coil bobbin 100 with a set pitch, which is set according to the actual layout requirement. In this embodiment, the first foil 210 and the second foil 230 are located at two end positions of the voice coil diameter, respectively, in the cross section of the voice coil. The first foil 210 and the second foil 230 are parallel to each other in the length direction of the voice coil.
Providing the conductive layer 200 on the voice coil bobbin 100 can help to quickly weld the voice coil wire 300 and the guide wire 400 to the voice coil bobbin 100; at the same time, the welding quality of the connection position of the guide wire 400 and the voice coil wire 300 is ensured. The conductive layer 200 is electrically conductive so as not to interfere with the electrical conduction between the guide wire 400 and the voice coil wire 300. Compared with the direct welding of the guide wire 400 and the voice coil wire 300 without the conductive layer 200, the welding efficiency and the stability of the electrical connection after welding are improved.
Compared with the structure that the conductive layer 200 is arranged only at the connection position of the guide wire 400 and the voice coil wire 300, the conductive layer 200 adopts the strip-shaped structure with the length not smaller than that of the voice coil skeleton 100, so that the positioning time for being attached to the voice coil skeleton 100 can be reduced; meanwhile, the length of the conductive layer 200 can cover the voice coil skeleton 100, so that the voice coil skeleton is not limited by the number of winding turns of the voice coil wire 300, the manufacturing is convenient, and the preparation efficiency is improved.
Referring to fig. 1, the voice coil further includes an insulating layer 500, and the insulating layer 500 covers the conductive layer 200. The lower surface of the insulating layer 500 is in contact with the conductive layer 200, and the upper surface of the insulating layer 500 is in contact with the voice coil wire 300. The insulating layer 500 is also provided in a long-strip structure in conformity with the long-strip structure of the conductive layer 200. The length and width of the insulating layer 500 are sufficient to cover the conductive layer 200. The insulating layers 500 are also provided in two strips, in conformity with the conductive layer 200.
Referring to fig. 1, in the finished voice coil, a communication port 510 is formed in the insulating layer 500 at a position corresponding to the connection of the voice coil wire 300 and the guide wire 400, so that the voice coil wire 300 and the guide wire 400 are connected to the conductive layer 500.
The insulating layer 500 may be an insulating paper attached with double sided tape. In this embodiment, the thickness of the insulating layer 500 is 0.015mm, and the radial dimension of the voice coil is prevented from being excessively large while insulation of the conductive layer 200 from the outside is ensured.
A loudspeaker comprises the voice coil, a magnetic loop unit and a vibrating element, wherein the voice coil is positioned in the magnetic loop unit and connected with the vibrating element. When the voice coil in the magnetic loop unit is provided with audio current, the voice coil generates a magnetic field along with the change of the audio current, and the generated magnetic field interacts with the magnetic field of the magnetic loop unit to vibrate the voice coil, so that a vibration element connected with the voice coil vibrates.
The voice coil is generally manufactured by winding a voice coil wire 300 on a single independent voice coil bobbin 100 and then attaching a copper foil thereto. Because the size of a single small-caliber voice coil is smaller, the process of attaching copper foils one by one is more complicated, and the efficiency is low. Here, a method for manufacturing a voice coil is provided to improve the manufacturing efficiency of the voice coil.
A preparation method of a voice coil mainly comprises the following steps:
s1, a conductive layer 200 is attached to the voice coil substrate 110.
Referring to fig. 4 (a), in the preparation method of the present embodiment, the voice coil substrate 110 has a sheet structure.
The projected shape of the voice coil base 110 having a sheet-like structure is rectangular with a predetermined size, the length and width of which are set according to the number of individual voice coils to be manufactured and the length of the individual voice coils, and the thickness of which is set according to the radial size of the voice coils.
The conductive layer 200 includes a first foil 210 and a second foil 230. The first foil 210 and the second foil 230 have the same shape and are both of a long strip structure. The length of the first foil 210 and the length of the second foil 230 are equal to the length of the voice coil substrate 110. In one embodiment, the thickness of the first foil 210 and the thickness of the second foil 230 are each 0.018mm and the width is each 1mm.
The first foil 210 and the second foil 230 are disposed in parallel to each other on the outer surface of the voice coil substrate 110 with a predetermined distance therebetween. At this time, the symmetry axes of the first foil 210 and the second foil 230 coincide with the symmetry axis of the voice coil substrate 110 of the sheet structure.
The first foil 210 and the second foil 230 are made of copper or other metal materials with better ductility and conductivity.
S2, winding the voice coil base material 110 attached with the conductive layer 200 in the step S1 into a tubular structure.
Referring to fig. 4 (b), a support shaft 250 is provided, and the voice coil base material 110 is spirally wound around the central axis of the support shaft 250 on the outer surface of the support shaft 250, so that the voice coil base material 110 is laid on the circumferential surface of the support shaft 250 along the length direction of the support shaft 250. Referring to fig. 4 (c), the adjacent first and second foils 210 and 230 on the wound voice coil bobbin substrate 110 remain parallel.
The support shaft 250 may facilitate winding and shaping of the voice coil substrate 110 in a sheet-like structure. The length and the outer diameter of the support shaft 250 are configured according to actual needs.
S3, cutting the voice coil base material 110 coiled in the step S2 into a tubular shape, and obtaining a plurality of voice coil bobbins 100 with set lengths.
Referring to fig. 1, fig. 1 illustrates a schematic structure of a voice coil bobbin 100 obtained by cutting a tubular voice coil substrate 110 of a set length. Since the conductive layer 200 is already attached to the voice coil base 110 before cutting, the obtained voice coil bobbin 100 has the conductive layer 200 directly on the surface thereof. The voice coil base 110 is formed in a tubular structure by winding, and the length of the conductive layer 200 on the voice coil bobbin 100 is not less than the set length of the voice coil bobbin 100 in the axial direction.
When the voice coil substrate 110 with the tubular structure is cut off, the supporting shaft can be inserted into the tubular structure, so that the supporting shaft is tightly abutted against the tubular structure at the cutting position, and the tubular structure is prevented from deforming in the cutting process.
S4, winding the voice coil wire 300 on the voice coil framework 100, and setting opposite ends of the voice coil wire 300 at set positions to serve as a positive electrode end 310 and a negative electrode end 320 for forming a current loop in the voice coil.
Referring to fig. 1, a voice coil wire 300 is wound around the surface of the voice coil bobbin 100 to which the conductive layer 200 is attached. The voice coil wire 300 is an enamel wire having two opposite free ends, which are defined as a positive end 310 and a negative end 320 (not shown) for convenience of description. After the winding of the voice coil wire 300 is completed, opposite ends thereof are disposed at positions corresponding to the conductive layers 200. For example, the positive terminal 310 is located on the first foil 210; likewise, the negative terminal 320 is located on the second foil 230.
S5, providing a guide wire 400, and connecting the voice coil wire 300 and the guide wire 400 to the conductive layer 200 together to obtain a voice coil.
The wire diameter of the conductor portion of the guide wire 400 is larger than the wire diameter of the conductor portion of the voice coil wire 300. The guide wire 400 provides a positive lead 410 and a negative lead 420 corresponding to the positive end 310 and the negative end 320 of the voice coil wire 300.
Referring to fig. 1, the positive terminal 310 of the voice coil wire 300 and the positive lead 410 are commonly connected to the first foil 210. Referring also to fig. 2, fig. 2 shows another view of the voice coil formed by connecting the voice coil wire 300 and the guide wire 400 to the conductive layer 200, and similarly, the negative electrode end 320 of the voice coil wire 300 is commonly connected to the second foil 230 together with the negative electrode lead 420.
Connecting the guide wire 400 to the voice coil wire 300 can avoid the problem of breakage when the voice coil wire 300 is directly connected to other elements. The guide wire 400 may be made of copper, tin copper or other copper alloy materials.
The above-described manner of connecting the voice coil wire 300 and the guide wire 400 to the conductive layer 200 employs a soldering process. In one embodiment, the guide wire 400 and the voice coil wire 300 are welded to the conductive layer 200 by laser welding.
Taking the example of welding the positive end 310 and the positive wire 410 of the voice coil wire 300 to the first foil 210: during the welding process, the positive electrode terminal 310 and the positive electrode lead 410 may be first fixedly connected together, and then the fixedly connected portion is welded to the first foil 210; or the part to be connected between the positive electrode terminal 310 and the positive electrode lead 410 is directly arranged at the designated position of the first foil 210, and the positive electrode terminal 310 and the positive electrode lead 410 are directly welded on the first foil 210.
In the above-described method for manufacturing the voice coil, the conductive layer 200 is first attached to the voice coil base 110, that is, the voice coil base 110 having a tubular structure is provided with the conductive layer 200 before being cut. After the voice coil base material 110 is cut off, the obtained voice coil bobbin 100 is preset with the conductive layer 200, and the conductive layer 200 attaching work is not required to be performed on the voice coil bobbin 100 with a smaller size one by one. The operation is simple, and the process cost is saved.
The operation steps of connecting the negative electrode terminal 320 of the voice coil wire 300 and the negative electrode lead 420 to the second foil 230 are the same as those described above, and will not be repeated here. Referring to fig. 4 (a), in other embodiments, after step S1, before step S2, the method further includes the following steps: an insulating layer 500 is disposed on the conductive layer 200.
The insulating layer 500 is directly attached to the upper surface of the conductive layer 200. The insulating layer 500 is of a size sufficient to completely cover the conductive layer 200. Providing the insulating layer 500 on the conductive layer 200 may prevent the conductive layer 200 from being electrically connected to the voice coil wire 300 and/or the guide wire 400 at an abnormal connection position. In one embodiment, the thickness of the insulating layer 500 is 0.015mm. The width of the insulating layer 500 is not less than the width of the conductive layer 200 to sufficiently cover the conductive layer 200.
The insulating layer 500 includes a first insulating layer 530 and a second insulating layer 550 corresponding to the first foil 210 and the second foil 230 of the conductive layer 200. Wherein the first insulating layer 530 covers the first foil 210 and the second insulating layer 550 covers the second foil 230.
It should be noted that, due to the insulating layer 500, when the voice coil wire 300 and the guide wire 400 are welded to the conductive layer 200 together, the conductive layer 200 may be exposed by laser spot penetrating the insulating layer 500, and then the voice coil wire 300 and the guide wire 400 may be welded to the conductive layer 200 in step S5. In another embodiment, since the thickness of the insulating layer 500 is very thin, the conductive layer 200 is not required to be exposed in advance, the voice coil 300 and the guide wire 400 can be directly welded to the corresponding positions of the conductive layer 200, and the insulating layer 500 can be directly melted during the welding process, so that the welding effect of the voice coil 300 and the guide wire 400 with the conductive layer 200 is not hindered.
Example 2
Unlike embodiment 1, the voice coil bobbin base material 110 has a tubular structure with a predetermined length, and is not required to be wound in a tubular shape, and the other steps are substantially the same as those of embodiment 1. The method specifically comprises the following steps:
s10, attaching a conductive layer 200 on the voice coil base 110.
Referring to fig. 5, in the manufacturing method of the present embodiment, the voice coil substrate 110 has a hollow tubular structure.
The conductive layer 200 comprises an elongated first foil 210 and a second foil 230 of identical shape. The length of the first foil 210 and the length of the second foil 230 are equal to the length of the tubular voice coil substrate 110. The first foil 210 and the second foil 230 are disposed in parallel to each other on the outer surface of the voice coil substrate 110 with a predetermined distance therebetween. The length directions of the first foil 210 and the second foil 230 are the same along the length direction of the voice coil substrate 110.
In the present embodiment, the first foil 210 and the second foil 230 are respectively located on two diametrically opposite sides of the voice coil substrate 110. The first foil 210 and the second foil 230 are centered on the axis of the voice coil bobbin substrate 110.
S20, cutting the voice coil base material 110 attached with the conductive layer 200 to obtain a plurality of voice coil bobbins 100 with set lengths.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a structure of a voice coil bobbin 100 obtained by cutting a tubular voice coil substrate 110 having a predetermined length. Since the conductive layer 200 is attached to the voice coil base 110 before cutting, the obtained voice coil bobbin 100 has the conductive layer 200 having a corresponding length directly on the surface thereof. In the axial direction, the length of the conductive layer 200 on the voice coil bobbin 100 is equal to the set length of the voice coil bobbin 100.
Similarly, when cutting the voice coil substrate 110 having a tubular structure, a support shaft may be inserted into the tubular structure, so as to prevent the tubular structure from being deformed during cutting.
S30, winding a voice coil wire 300 on the voice coil framework 100, and setting opposite ends of the voice coil wire 300 at set positions to serve as a positive electrode end 310 and a negative electrode end 320 for forming a current loop in the voice coil.
Referring to fig. 3, a voice coil wire 300 is wound around the surface of the voice coil bobbin 100. The voice coil wire 300 is a wire enamel having two opposite free ends, and after the winding of the voice coil wire 300 is completed, the two opposite free ends are positioned as a positive electrode end 310 and a negative electrode end 320 (not shown) and are disposed at positions corresponding to the conductive layer 200.
S40, providing a guide wire 400, and connecting the voice coil wire 300 and the guide wire 400 to the conductive layer 200 together to obtain a voice coil.
The wire diameter of the conductor portion of the guide wire 400 is larger than the wire diameter of the conductor portion of the voice coil wire 300 so that the external element is connected through the guide wire 400 during the assembly of the voice coil with other elements, and the external current is introduced into the voice coil wire 300 through the guide wire.
Two guide wires 400 are provided corresponding to the positive and negative electrode terminals 310 and 320. The guide wire 400 includes a positive lead 410 and a negative lead 420. The positive lead 410 and the positive terminal 310 of the voice coil wire 300 are connected to the first foil 210 by laser welding, and the negative lead 420 and the negative terminal 320 of the voice coil wire 300 are connected to the second foil 230 by laser welding. The specific operation was similar to that of example 1.
In other embodiments, after step S10, before step S20, the method further includes the steps of: an insulating layer 500 is disposed on the conductive layer 200.
Referring to fig. 5, an insulating layer 500 is directly attached to the upper surface of the conductive layer 200. The insulating layer 500 is of a size sufficient to completely cover the conductive layer 200. Providing the insulating layer 500 on the conductive layer 200 may prevent the conductive layer 200 from being electrically connected to the voice coil wire 300 and/or the guide wire 400 at an abnormal connection position.
Referring to fig. 5, as in embodiment 1, the insulating layer 500 includes a first insulating layer 530 and a second insulating layer 550 (not shown) on the conductive layer 200 corresponding to the positions of the first foil 210 and the second foil 230. Wherein the first insulating layer 530 covers the first foil 210 and the second insulating layer 550 covers the second foil 230. Likewise, the first insulating layer 530 and the second insulating layer 550 are centered about the axis of the voice coil bobbin substrate 110.
When the voice coil wire 300 and the guide wire 400 are welded to the conductive layer 200 together due to the presence of the insulating layer 500, the conductive layer 200 may be exposed by laser spot penetrating the insulating layer 500, and then the voice coil wire 300 and the guide wire 400 may be welded to the conductive layer 200. In another embodiment, the conductive layer 200 is not required to be exposed in advance, the voice coil wire 300 and the guide wire 400 can be directly welded to the corresponding positions of the conductive layer 200, and the insulating layer 500 can be directly melted during the welding process, so that the welding effect of the voice coil wire 300 and the guide wire 400 with the conductive layer 200 is not hindered.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A voice coil preparation method is characterized by comprising the following steps:
S1, attaching a conductive layer on a voice coil base material, wherein the voice coil base material is a sheet; winding the voice coil base material attached with the conductive layer into a tubular structure to form a voice coil framework to be cut off;
S2, inserting a supporting shaft into the tubular structure, and cutting off the voice coil base material to obtain a voice coil framework with a set length;
s3, winding a voice coil wire on the voice coil framework;
and S4, providing a guide wire and connecting the guide wire and the voice coil wire to the conductive layer together.
2. The method of manufacturing a voice coil according to claim 1, further comprising, prior to step S2:
And covering an insulating layer on the conductive layer.
3. The method of claim 1, wherein the conductive layer comprises a first foil and a second foil disposed in parallel, the voice coil wire has opposite ends, one end of the voice coil bobbin is connected to the first foil in common with the guide wire, and the other end of the voice coil bobbin is connected to the second foil in common with the guide wire.
4. A voice coil manufactured by the voice coil manufacturing method according to any one of claims 1 to 3, comprising: the voice coil comprises a voice coil framework, a conducting layer and a voice coil wire, wherein the conducting layer is attached to the voice coil framework, the voice coil wire is wound on the voice coil framework, and the conducting layer is clamped between the voice coil framework and the voice coil wire.
5. The voice coil of claim 4, wherein the conductive layer has a length not less than a length of the voice coil former.
6. The voice coil of claim 5, comprising one of:
the length direction of the conducting layer forms a set included angle with the central line direction of the voice coil framework;
the length direction of the conducting layer is parallel to the central line direction of the voice coil framework.
7. The voice coil of claim 4, further comprising an insulating layer attached to the conductive layer and positioned between the conductive layer and the voice coil wire.
8. A loudspeaker comprising a voice coil as claimed in any one of claims 4 to 7, a magnetic circuit unit and a vibrating element, the voice coil being located within the magnetic circuit unit and connected to the vibrating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415816.7A CN113923566B (en) | 2021-11-25 | 2021-11-25 | Voice coil preparation method, voice coil and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415816.7A CN113923566B (en) | 2021-11-25 | 2021-11-25 | Voice coil preparation method, voice coil and loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113923566A CN113923566A (en) | 2022-01-11 |
| CN113923566B true CN113923566B (en) | 2024-05-17 |
Family
ID=79248326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111415816.7A Active CN113923566B (en) | 2021-11-25 | 2021-11-25 | Voice coil preparation method, voice coil and loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113923566B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6442696U (en) * | 1987-09-08 | 1989-03-14 | ||
| JPH03208497A (en) * | 1990-01-11 | 1991-09-11 | Kenwood Corp | Wiring structure of speaker |
| WO1997033112A1 (en) * | 1996-03-06 | 1997-09-12 | Kelsey Hayes Company | Foil wound coil for a solenoid valve |
| CN202121767U (en) * | 2011-07-01 | 2012-01-18 | 宁波凯普电子有限公司 | Large power voice coil |
| CN102595285A (en) * | 2012-02-27 | 2012-07-18 | 惠州市海韵电子有限公司 | Framework of speech coil and preparation method of framework |
| CN103377794A (en) * | 2012-04-25 | 2013-10-30 | 佳邦科技股份有限公司 | Power inductance structure free of use of lead frame and manufacturing method thereof |
| CN203523030U (en) * | 2013-10-25 | 2014-04-02 | 惠州富盛绝缘材料有限公司 | Voice coil reinforcing paper tube with metal foil |
| CN104602176A (en) * | 2014-12-25 | 2015-05-06 | 广东佳禾声学科技有限公司 | Method for directly forming voice coil on insulating base material and application of voice coil |
| CN206379483U (en) * | 2016-12-19 | 2017-08-04 | 惠州市海韵电子有限公司 | A kind of small-power voice coil loudspeaker voice coil wire welding structure |
| CN107257529A (en) * | 2017-06-19 | 2017-10-17 | 宁波音沛乐电子有限公司 | A kind of film voice coil loudspeaker voice coil |
| CN207866908U (en) * | 2018-01-16 | 2018-09-14 | 宁波市计量测试研究院（宁波市衡器管理所、宁波新材料检验检测中心） | A kind of ultra-thin coil made using film deposition techniques |
| CN109545538A (en) * | 2018-11-30 | 2019-03-29 | 北京中石伟业科技股份有限公司 | A kind of planar coil and preparation method thereof, wireless charging system |
| CN110430512A (en) * | 2019-08-21 | 2019-11-08 | 东莞威声声学科技有限公司 | A kind of loudspeaker reducing distortion |
| CN110832882A (en) * | 2017-06-28 | 2020-02-21 | 歌乐株式会社 | Loudspeaker |
| CN210351615U (en) * | 2019-07-25 | 2020-04-17 | 深圳市三诺数字科技有限公司 | Voice coil structure of loudspeaker and loudspeaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108966095B (en) * | 2018-08-07 | 2024-06-18 | 张永春 | Speaker unit and speaker device |
-
2021
- 2021-11-25 CN CN202111415816.7A patent/CN113923566B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6442696U (en) * | 1987-09-08 | 1989-03-14 | ||
| JPH03208497A (en) * | 1990-01-11 | 1991-09-11 | Kenwood Corp | Wiring structure of speaker |
| WO1997033112A1 (en) * | 1996-03-06 | 1997-09-12 | Kelsey Hayes Company | Foil wound coil for a solenoid valve |
| CN202121767U (en) * | 2011-07-01 | 2012-01-18 | 宁波凯普电子有限公司 | Large power voice coil |
| CN102595285A (en) * | 2012-02-27 | 2012-07-18 | 惠州市海韵电子有限公司 | Framework of speech coil and preparation method of framework |
| CN103377794A (en) * | 2012-04-25 | 2013-10-30 | 佳邦科技股份有限公司 | Power inductance structure free of use of lead frame and manufacturing method thereof |
| CN203523030U (en) * | 2013-10-25 | 2014-04-02 | 惠州富盛绝缘材料有限公司 | Voice coil reinforcing paper tube with metal foil |
| CN104602176A (en) * | 2014-12-25 | 2015-05-06 | 广东佳禾声学科技有限公司 | Method for directly forming voice coil on insulating base material and application of voice coil |
| CN206379483U (en) * | 2016-12-19 | 2017-08-04 | 惠州市海韵电子有限公司 | A kind of small-power voice coil loudspeaker voice coil wire welding structure |
| CN107257529A (en) * | 2017-06-19 | 2017-10-17 | 宁波音沛乐电子有限公司 | A kind of film voice coil loudspeaker voice coil |
| CN110832882A (en) * | 2017-06-28 | 2020-02-21 | 歌乐株式会社 | Loudspeaker |
| CN207866908U (en) * | 2018-01-16 | 2018-09-14 | 宁波市计量测试研究院（宁波市衡器管理所、宁波新材料检验检测中心） | A kind of ultra-thin coil made using film deposition techniques |
| CN109545538A (en) * | 2018-11-30 | 2019-03-29 | 北京中石伟业科技股份有限公司 | A kind of planar coil and preparation method thereof, wireless charging system |
| CN210351615U (en) * | 2019-07-25 | 2020-04-17 | 深圳市三诺数字科技有限公司 | Voice coil structure of loudspeaker and loudspeaker |
| CN110430512A (en) * | 2019-08-21 | 2019-11-08 | 东莞威声声学科技有限公司 | A kind of loudspeaker reducing distortion |
Non-Patent Citations (3)
| Title |
|---|
| Design, Fabrication and Performance Analysis of a Voice Coil Motor Using Different Input Signal;M G Kibria;《2019 IEEE International Conference on Signal Processing, Information, Communication & Systems (SPICSCON)》;20200416;全文 * |
| 一种相同规格线圈绕制箔带剪切预停的设计及实现;高云泽;《万方数据库》;20191126;全文 * |
| 微型扬声器的电磁特性分析;牛源蓁;《中国优秀硕士学位论文全文数据库 信息科技辑》;20190415;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113923566A (en) | 2022-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8056212B2 (en) | Coil and method of forming the coil | |
| EP0622970B1 (en) | Voice coil and loudspeaker structure | |
| JPH10327011A (en) | Antenna for reception | |
| JP2009272315A (en) | Coil component and method of producing same | |
| JP2015528630A (en) | Hermetic terminal with fully insulated direct wire connection | |
| GB2369251A (en) | Method of insulating a planar coil circuit | |
| CN107547989B (en) | Miniature electroacoustic transducer and manufacturing method thereof | |
| CN113923566B (en) | Voice coil preparation method, voice coil and loudspeaker | |
| JPH11251164A (en) | Compact choke coil | |
| CN1194458C (en) | Rotor of small motor and its producing method | |
| CN217933902U (en) | Winding type battery and earphone | |
| JPH07320961A (en) | Surface-mounting type transformer | |
| JP2574434Y2 (en) | coil | |
| JP3159211B1 (en) | Brushless motor | |
| JP2558513Y2 (en) | coil | |
| WO2018154858A1 (en) | Method for manufacturing common-mode choke coil | |
| JP3203059B2 (en) | Flyback transformer device and method of manufacturing the same | |
| CN1374735A (en) | Rotor of small motor and its producing method | |
| JP2890647B2 (en) | Voice coil for speaker | |
| CN113727249B (en) | Sound production device and electronic equipment | |
| JPH0997741A (en) | Electrolytic capacitor | |
| JP6977549B2 (en) | Common mode choke coil | |
| KR200392885Y1 (en) | Thin shot coil | |
| JPS61105812A (en) | Inductance element | |
| JP2001136597A (en) | Voice coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |