WO2018191864A1

WO2018191864A1 - Double coil structure with skeleton and winding process therefor

Info

Publication number: WO2018191864A1
Application number: PCT/CN2017/080901
Authority: WO
Inventors: 廖黄同
Original assignee: 东莞力音电子有限公司
Priority date: 2017-04-18
Filing date: 2017-04-18
Publication date: 2018-10-25
Also published as: CN109155185A

Abstract

Disclosed is a double coil structure with a skeleton and a winding process therefor, falling within the field of coils, wherein both use the same enamelled wire for winding. An enamelled wire is fixed to a first welding stud (11) by winding; after being fixed to the first welding stud (11) by winding, the same enamelled wire is again wound around a first winding stud (13) to form a first coil (2); after being wound around the first winding stud (13) to form the first coil (2), the same enamelled wire is wound around a second winding stud (14) to form a second coil (3); and after being wound around the second winding stud (14) to form the second coil (3), the same enamelled wire is again wound around and fixed to a second welding stud (12). The double coil structure with the skeleton and the winding process therefor allow one wire to be wound to form two coils without the occurrence of solder explosions.

Description

Title: A double-coil structure with skeleton and its winding process

[0001] The present invention relates to the field of coils, and more particularly to a double bobbin structure with a skeleton and a winding process thereof.

Background technique

[0002] A coil used in a digital camera, an autofocus mechanism of a mobile phone, or the like can move a moving mechanism that holds a lens body in the optical axis direction. In the conventional double-coil structure with a skeleton, coils which are bundled in a ring shape are respectively adhered to the bobbins on both ends of the bobbin, and then the magnetic field of the magnet fixed to the inner wall surface of the yoke acts to In the above-mentioned coil motor device, since electrical conduction is required between the two coils, a common method is to use solder to realize electrical connection, and it is difficult to electrically connect the tin coils at the start/end positions of the two coils. The mechanical operation is realized, the process is complicated, the same, the rosin is inside the solder, and the tin phenomenon often occurs during the welding process, and the fired solder ball hinders the smooth movement of the coil bobbin, and the yield of the double-coil structure with the skeleton is lowered.

technical problem

[0003] In order to solve the above problems, the present invention provides a double bobbin structure with a skeleton and a winding process thereof, and two coils are formed by winding one wire, and no tinning phenomenon occurs.

Problem solution

Technical solution

[0004] The technical solution adopted by the present invention is: a double-coil structure with a skeleton, including a coil bobbin and an enameled wire; the left and right end faces of the bobbin are respectively provided with a first welding column and a second welding column, and the left and right sides of the bobbin are respectively a first bobbin and a second bobbin are provided; the enameled wire is fixed on the first welding post; after the first welding post is fixed, the same enameled wire is wound on the first bobbin to form a first coil After the first bobbin is wound to form the first coil, the same enameled wire is wound on the second bobbin to form a second coil; after the second bobbin is wound to form the second coil, the same enameled wire is again The second welding post is wound around the wire.

[0005] The present invention further provides a winding process with a skeleton double coil structure for producing the above-described double-coil structure with a skeleton, the steps comprising: the enameled wire is fixed on the first welding column; After the column winding is fixed, the same enameled wire forms a first coil in the first winding bobbin; the first winding bobbin winding is formed. After the first coil, the same enameled wire is wound on the second bobbin to form a second coil; after the second bobbin is wound to form a second coil, the same enameled wire is further fixed on the second welded post.

Advantageous effects of the invention

Beneficial effect

[0006] The beneficial effects of the present invention are: a double-coil structure with a skeleton and a winding process thereof, which are sequentially wound by the same enameled wire, and the electrical conduction between the first coil and the second coil is directly realized, There is a solder joint, there is no tinning phenomenon, it will not hinder the smooth movement of the bobbin, and reduce the defective rate of the double coil structure with the skeleton.

Brief description of the drawing

DRAWINGS

1 is a plan view showing a double bobbin structure with a skeleton according to a first embodiment of the present invention;

2 is a plan view of a bobbin according to Embodiment 1 of the present invention;

3 is a schematic view showing the structure of a first coil of the present invention;

4 is a plan view showing a double bobbin structure with a skeleton according to a second embodiment of the present invention;

5 is a plan view of a bobbin according to a second embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0012] The present invention will be further described in detail below with reference to the accompanying drawings.

[0013] Embodiment 1:

1 to 3 schematically show a skeleton double coil structure according to an embodiment of the present invention.

[0015] The skeleton double coil structure comprises a bobbin 1 and an enameled wire. The first welding column 11 and the second welding column 12 are respectively disposed on the left and right end faces of the bobbin 1. The first welding column 11 and the second welding column 12 are each a straight column. The first bobbin 13 and the second bobbin 14 are respectively disposed on the left and right sides of the bobbin 1. The first bobbin 13 and the second bobbin 14 are composed of three evenly distributed columns. The enameled wire is fixed on the first welding post 11; after the first welding post 11 is wound, the same enameled wire is wound on the first bobbin 13 to form the first coil 2; the first bobbin 13 is wound After forming the first coil 2, the same enameled wire is in the second winding The column 14 is wound to form the second coil 3; after the second bobbin 14 is wound to form the second coil 3, the same enameled wire is further wound around the second welding post 12.

[0016] In the above, the enameled wire is spot-welded on the first welding column 11, and the fixed solder joint position is easy to realize mechanical operation; likewise, the enameled wire is spot-fixed on the second welding post 12, and the enameled wire is wound immediately after the wire is wound. Spot welding is carried out to achieve edge-wound welding as a whole, and the process is simple and easy to realize mechanical operation.

[0017] In the above, the reinforcing coil 7 is disposed in the middle of the first coil 2 to strengthen the structure of the first coil 2, preventing the first coil 2 from loosening and weakening the magnetic field of the first coil 2; likewise, the middle portion of the second coil 3 is also provided The coil 7 is reinforced to reinforce the structure of the second coil 3, preventing the second coil 3 from loosening and weakening the magnetic field of the second coil 3.

[0018] In the above, the first bobbin 13 is parallel or protruded from the first coil 2 by 0 mm-0.20 mm, wherein the optimal protruding length is 0.06 mm, so that the magnetic field generated by the first coil 2 reduces interference; The two bobbins 14 are parallel or protruded from the second coil 3 by 0 mm to 0.20 mm, wherein the optimum protruding length is 0.06 mm, so that the magnetic field generated by the second coil 3 is less disturbed.

[0019] As described above, the enamel wire connecting the first coil 2 and the second coil 3 is located on the side of the bobbin 1, and does not hinder the smooth movement of the bobbin 1.

[0020] The bobbin double coil structure winding process is used to produce the above-mentioned skeleton double coil structure, and the steps thereof include: the enameled wire is fixed on the first welding post 11; the first welding post 11 is wound After being fixed, the same enameled wire is further wound on the first bobbin 13 to form the first coil 2; after the first bobbin 13 is wound to form the first coil 2, the same enameled wire is wound on the second bobbin 14 The second coil 3 is formed; after the second bobbin 14 is wound to form the second coil 3, the same enameled wire is further wound around the second welding post 12.

[0021] In the above method, the enameled wire is first tinned on the enameled wire before the first welding post 11 is wound, and then wound on the first welding post 11 and welded around the edge, the process is simple, and the mechanical operation is easy to be completed; The first welding post continues to be wound after spot welding. After winding the first coil 2 and the second coil 3, the enameled wire is tinned on the enameled wire before the second welding post 12 is wound, and then wound on the first welding post 12, and the side is soldered, the process is simple Easy to implement mechanical operations.

[0022] In the above method, after the first enameled wire is wound on the first bobbin 13 to form the first coil 2, the enameled wire is further wound to the middle of the first bobbin 13 to form a reinforcing coil 7 and then the enameled wire is drawn. In order to strengthen the structure of the first coil 2, the first coil 2 is prevented from loosening and the magnetic field of the first coil 2 is weakened; likewise, after the enameled wire is wound around the second bobbin 14 to form the second coil 3, the enameled wire is re-wound to the second The middle portion of the bobbin 14 is formed by winding After the coil 7 is solidified, an enameled wire is drawn to reinforce the structure of the second coil 3, preventing the second coil 3 from loosening and weakening the magnetic field of the second coil 3.

[0023] In the above method, the enameled wire is in the first bobbin 13 and the first bobbin 13 abuts the top block to assist the winding; likewise, the enameled wire is on the second bobbin 14 and the second bobbin 14 All have a top block to assist winding

[0024] In the above method, after the first coil 2 is wound, the enameled wire extends along the side of the bobbin 1 to the second bobbin 14 to wind the second coil 3 without hindering the smooth movement of the bobbin 1.

[0025] Embodiment 2:

Referring to FIG. 4 and FIG. 5, compared with the first embodiment, the difference is:

[0027] The bobbin 1 having the skeleton double coil structure further has a third bobbin 15 and a fourth bobbin 16; a first bobbin 13, a second bobbin 14, and a third bobbin 15 and the fourth bobbin 16 are sequentially disposed on four sides of the bobbin 1; the first bobbin 13 and the second bobbin 14 are respectively adjacent to the first bobbin 13 and the second bobbin 14; enameled wire The first welding post 11 is wound and fixed; after the first welding post 11 is wound, the same enameled wire is wound on the first bobbin 13 to form the first coil 2; the first bobbin 13 is wound. After the first coil 2, the same enameled wire is wound on the second bobbin 14 to form the second coil 3; after the second bobbin 14 is wound to form the second coil 3, the same enameled wire is on the third bobbin 15 winding forms a third coil 5; after the third bobbin 15 is wound to form a third coil 5, the same enameled wire is wound around the fourth bobbin 16 to form a fourth coil 6; at the fourth bobbin 16 After the winding forms the fourth coil 6, the same enameled wire is further wound around the second welding post 12.

[0028] In the above, the third coil 5 is also provided with a reinforcing coil 7 in the middle to strengthen the structure of the third coil 5, preventing the third coil 5 from loosening and weakening the magnetic field of the first coil 2. Similarly, the middle portion of the fourth coil 6 is also provided. There is a reinforcing coil 7 to reinforce the structure of the fourth coil 6, preventing the fourth coil 6 from loosening and weakening the magnetic field of the fourth coil 6.

[0029] In the above, the third bobbin 15 is also parallel or protruded from the third coil 5 by 0 mm-0.20 mm, wherein the optimal protruding length is 0.06 mm, so that the magnetic field generated by the third coil 5 is reduced to interfere; The fourth bobbin 16 is also parallel or protruded from the fourth coil 6 by 0 mm to 0.20 mm, wherein the optimum projection length is 0.06 mm, so that the magnetic field generated by the fourth coil 6 is less disturbed.

[0030] In the above, the enameled wire position between the first coil 2, the second coil 3, the third coil 5, and the fourth coil 6 is connected. [0031] The bobbin double coil structure winding process is used to produce the above-mentioned skeleton double coil structure, and the steps thereof include: the enameled wire is fixed on the first welding post 11; the first welding post 11 is wound After being fixed, the same enameled wire is further wound on the first bobbin 13 to form the first coil 2; after the first bobbin 13 is wound to form the first coil 2, the same enameled wire is wound on the second bobbin 14 Forming the second coil 3; after the second bobbin 14 is wound to form the second coil 3, the same enameled wire is wound on the third bobbin 15 to form a third coil 5; the third bobbin 15 is wound around the wire After the third coil 5, the same enameled wire is wound on the fourth bobbin 16 to form a fourth coil 6; after the fourth bobbin 16 is wound to form the fourth coil 6, the same enameled wire is again in the second welded post 12 winding is fixed.

[0032] In the above method, after the enameled wire is wound around the third bobbin 15 to form the third coil 4, the enameled wire is also wound to the middle of the third bobbin 15 to form the reinforcing coil 7 and then the enameled wire is drawn. In order to reinforce the structure of the third coil 4, the third coil 4 is prevented from loosening and the magnetic field of the third coil 4 is weakened; likewise, after the enameled wire is wound around the fourth bobbin 16 to form the fourth coil 5, the enameled wire is also re-wound to The middle portion of the fourth bobbin 16 is looped to form the reinforcing coil 7 and then the enameled wire is drawn to reinforce the structure of the fourth coil 5 to prevent the fourth coil 5 from loosening and weakening the magnetic field of the fourth coil 5.

[0033] In the above method, the enameled wire is in the third bobbin 15 and the third bobbin 15 is also opposed to the top block to assist the winding; likewise, the enameled wire is on the fourth bobbin 16 and the fourth bobbin 16 is also the same as the top block to assist the winding.

[0034] In the above method, after the second coil 3 is wound, the enamel wire also extends along the side of the bobbin 1 to the third bobbin 15 to wind the third coil 4; the enameled wire completes the third coil in the winding The rear cymbal also extends along the side of the bobbin 1 to the fourth bobbin 16 to wind the fourth coil 5, which does not hinder the smooth movement of the bobbin 1.

The above embodiments are intended to be illustrative and not restrictive, and the equivalents and modifications of the methods of the invention are included in the scope of the invention.

Claims

Claim

[Claim 1] A double-coil structure with a skeleton, comprising a coil bobbin and an enameled wire; a first welding post and a second welding post respectively disposed on the left and right end faces of the bobbin, and the first bobbin respectively disposed on the left and right sides of the bobbin And a second bobbin; wherein the enameled wire is fixed on the first welding post; after the first welding post is wound, the same enameled wire is wound on the first bobbin to form a first coil; After a winding bobbin is wound to form a first coil, the same enameled wire forms a second coil in the second bobbin winding; after the second bobbin winding forms a second coil, the same enameled wire is in the second The welding column is fixed by winding.

[Claim 2] A double bobbin structure with a skeleton according to claim 1, wherein: a reinforcing coil is disposed in a middle portion of the first coil; and a reinforcing coil is also disposed in a middle portion of the second coil.

[Claim 3] A double bobbin structure with a skeleton according to claim 1 or 3, wherein: the first bobbin is parallel or protruded from the first coil by 0 mm to 0.20 mm; the second bobbin is opposite The second coil is parallel or protruded from 0 mm to 0.20 mm.

[Claim 4] A double bobbin structure with a skeleton according to claim 1, wherein: the enameled wire is spot-welded on the first welded post; and the enameled wire is spot-welded on the second welded post.

[Claim 5] A bobbed double coil structure according to claim 1, 2 or 4, wherein the enamel line connecting the first coil and the second coil is located on a side of the bobbin.

[Claim 6] A winding process with a skeleton double coil structure for producing the double bobbin structure of the above-mentioned claims 1-5, characterized in that the steps include: the enameled wire is wound around the first welded post The wire is fixed; after the first welding column winding is fixed, the same enameled wire further forms a first coil in the first winding column winding; after the first winding wire is wound to form the first coil, the same enameled wire is in the second The bobbin winding forms a second coil; after the second bobbin winding forms a second coil, the same enameled wire is further wound on the second welding post.

[Claim 7] A winding process with a skeleton double coil structure according to claim 6, wherein

: The enameled wire is first tinned on the enameled wire before the first welded column is wound, and then wound on the first welded column and edge welded; the enameled wire is first tinned on the enameled wire before the second welded post is wound, and then Winding is performed on the second welding column, and the side is welded.

[Claim 8] A winding process with a skeleton double coil structure according to claim 6, wherein: after the first winding of the first winding bobbin is formed on the first winding bobbin, the enameled wire is re-wound to the first A coil is formed in the middle of a bobbin to form a reinforcing coil, and then an enameled wire is drawn; after the second bobbin is wound on the second bobbin, the enameled wire is further wound to the middle of the second bobbin to form a reinforcing coil. Then lead the enameled wire.

[Claim 9] The winding process of the double bobbin structure with a skeleton according to claim 6 or 7, wherein: the enameled wire is in the first winding bobbin and the first bobbin is opposite to the top block; The second bobbin and the second bobbin are all offset by a top block.

[Claim 10] A winding process with a skeleton double coil structure according to claim 6, 7 or 8, wherein: the enameled wire extends along the side of the bobbin to the first side after winding the first coil The second bobbin is wound to the second coil.