CN106655652B - Carrier, coil and lower elastic sheet assembly structure and method and voice coil motor - Google Patents
Carrier, coil and lower elastic sheet assembly structure and method and voice coil motor Download PDFInfo
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- CN106655652B CN106655652B CN201610997128.9A CN201610997128A CN106655652B CN 106655652 B CN106655652 B CN 106655652B CN 201610997128 A CN201610997128 A CN 201610997128A CN 106655652 B CN106655652 B CN 106655652B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
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- Power Engineering (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses a carrier of a voice coil motor, an assembly structure and an assembly method of a coil and a lower elastic sheet, and the voice coil motor. According to the assembly structure and the assembly method, the connecting sheet on the lower elastic sheet is directly melted and then respectively covered on the outgoing line and the incoming line of the coil to form connection in a laser welding mode. The assembly structure and the assembly method have simple processes, do not need to use solder paste, save material cost and labor cost, and have no problems of rosin residue, solder slag and the like; the laser welding mode is very efficient and stable, and the production efficiency and yield are greatly improved; the improvement of the production efficiency can save part of the cost of the turnover jig; the metal connection between shell fragment and the coil compares the soldering tin among the prior art and connects down, and packaging efficiency is higher, and the fastness is better, can improve voice coil motor's reliability.
Description
Technical Field
The present invention relates to a method for assembling a voice coil motor, and more particularly, to a carrier of a voice coil motor, an assembly structure of a coil and a lower spring, an assembly method, and a voice coil motor.
Background
The voice coil motor is suitable for being used as a driving device of a camera module in electronic products such as digital cameras, mobile phones and the like.
At present, the connection mode of voice coil motor's lower shell fragment and coil: the first method is that the wire is not needed to be arranged, the wire head is firstly wound on the plastic column of the carrying seat, the wire is wound, and then the solder paste is welded with the elastic sheet, and the requirements of welding on the design of the elastic sheet and welding equipment are very high; the second is to arrange the wire, the wire head is firstly arranged in a fixed range, then solder paste welding or current welding is carried out, generally, after the welding is finished, glue is added at the welding position to increase the strength, and the welding efficiency and yield are usually slightly low.
For example, an invention patent document with an application number of 201310571080.1 discloses an assembly structure of a coil and a spring plate of a voice coil motor assembly and an assembly process thereof. The process comprises the steps of winding the starting end and the ending end of a coil on two opposite convex pins of a coil support, respectively laminating two lower elastic sheets on the two opposite convex pins of the coil support, respectively pointing solder paste to connect the two lower elastic sheets with the starting end and the ending end of the coil, and finally reinforcing the coil by soldering the solder paste or laser welding. As seen from the specific embodiment and the attached drawings, the process requires that the lower spring plate is provided with holes at positions corresponding to the two convex feet of the coil support, and the solder paste is dotted in the holes to connect the lower spring plate and the coil, so that the process is complex, the solder paste is required to be used as a connecting medium of the lower spring plate and the coil, and the problems of tin explosion and the like easily occur if soldering iron is used for soldering tin, and the process difficulty is high; if the solder paste is used for laser welding, the design requirement on parts is high, especially the appearance design and tolerance requirement of the lower spring plate bonding pad, and the thickness of a welded tin point is large.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the carrier of the voice coil motor, the assembly structure and the assembly method of the coil and the lower elastic sheet, and the voice coil motor.
The technical problem to be solved by the invention is realized by the following technical scheme:
an assembly structure of a carrier, a coil and a lower elastic sheet of a voice coil motor comprises the carrier, the coil wound on the carrier and the lower elastic sheet matched with the bottom of the carrier; the carrier is of a sleeve structure, an upper convex edge and a lower convex edge are respectively formed at the upper end and the lower end of the carrier, and the coil is wound between the upper convex edge and the lower convex edge; two binding posts are transversely arranged on the outer edge of the lower convex edge, and two connecting sheets respectively corresponding to the two binding posts are transversely arranged on the outer edge of the lower elastic sheet; the outgoing line and the incoming line of the coil are respectively wound on the two binding posts of the carrier, and the two connecting sheets on the lower elastic sheet are respectively covered on the outgoing line and the incoming line of the coil after being melted to form connection.
Furthermore, the two connecting pieces on the lower elastic piece are both solid pieces without holes, and the two connecting pieces on the lower elastic piece are respectively covered on the outgoing line and the incoming line of the coil to form connection after being melted in a laser welding mode.
Furthermore, the lower convex edge of the carrier is also provided with a plurality of positioning columns, and the lower elastic sheet is also provided with a plurality of positioning holes.
Further, the lower elastic sheet is mounted on the bottom surface of the carrier through a hot riveting process.
A method for assembling a carrier, a coil and a lower elastic sheet of a voice coil motor comprises the following steps:
step 1: providing a carrier and a coil, wherein the carrier is of a sleeve structure, an upper convex edge and a lower convex edge are respectively formed at the upper end and the lower end of the carrier, and two binding posts are transversely arranged on the outer edge of the lower convex edge; winding the coil on a carrier, wherein an outgoing line and an incoming line of the coil are respectively wound on two binding posts of the carrier;
step 2: mounting a lower elastic sheet on the bottom surface of the carrier, wherein two connecting sheets corresponding to the two binding posts respectively are transversely arranged on the outer edge of the lower elastic sheet;
and step 3: and melting the two connecting sheets on the lower elastic sheet and then respectively covering the two connecting sheets on the outgoing line and the incoming line of the coil to form connection.
Furthermore, the two connecting pieces on the lower elastic piece are both solid pieces without holes; in step 3, the two connecting pieces on the lower elastic sheet are melted by laser welding and then respectively cover the outgoing line and the incoming line of the coil to form connection.
Furthermore, the lower convex edge of the carrier is also provided with a plurality of positioning columns, and the lower elastic sheet is also provided with a plurality of positioning holes; and the lower elastic sheet is used for positioning and limiting the relative position of the lower elastic sheet and the carrier when the lower elastic sheet is installed in the step 2.
Further, in step 2, the lower elastic sheet is mounted on the bottom surface of the carrier through a hot riveting process.
A voice coil motor comprises the carrier, a coil and an assembly structure of a lower elastic sheet.
The invention has the following beneficial effects: the assembly structure and the assembly method have simple processes, do not need to use solder paste, save material cost and labor cost, and have no problems of rosin residue, solder slag and the like; the laser welding mode is very efficient and stable, and the production efficiency and yield are greatly improved; the improvement of the production efficiency can save part of the cost of the turnover jig; the metal connection between shell fragment and the coil compares the soldering tin among the prior art and connects down, and packaging efficiency is higher, and the fastness is better, can improve voice coil motor's reliability.
Drawings
FIG. 1 is a schematic view of a coil and carrier in an assembled configuration provided by the present invention;
fig. 2 is a schematic view of a lower spring plate of the assembly structure provided by the present invention;
fig. 3 is an overall schematic view of the assembly structure provided by the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1-3, an assembly structure of a carrier, a coil and a lower spring of a voice coil motor comprises a carrier 1, a coil 2 wound on the carrier 1, and a lower spring 3 matched with the bottom of the carrier 1; the carrier 1 is of a sleeve structure, an upper convex edge 12 and a lower convex edge 11 are respectively formed at the upper end and the lower end of the carrier, the coil 2 is wound between the upper convex edge 12 and the lower convex edge 11, and two binding posts 111 are transversely arranged on the outer edge of the lower convex edge 11; two connecting sheets 31 corresponding to the two binding posts 111 are transversely arranged on the outer edge of the lower elastic sheet 3; the incoming line 21 and the outgoing line (not shown in the figure, and referring to the incoming line 21) of the coil 2 are respectively wound on the two terminals 111 of the carrier 1, and the two connecting pieces 31 on the lower elastic sheet 3 are respectively covered on the incoming line 21 and the outgoing line (not shown in the figure, and referring to the incoming line 21) of the coil 2 after being melted to form connection.
The assembly structure of the carrier, the coil and the lower spring plate directly melts the two connecting pieces 31 on the lower spring plate 3 and then respectively covers the incoming line 21 and the outgoing line (not shown in the figure, and can refer to the incoming line 21) of the coil 2, and solder paste is not needed to be used as a connecting medium between the lower spring plate 3 and the coil 2. Compared with the tin soldering connection in the prior art, the invention can save the material cost and the labor cost, and has no problems of rosin residue, soldering tin slag and the like; the metal connection between lower shell fragment 3 and the coil 2 compares the soldering tin among the prior art and connects, and packaging efficiency is higher, and the fastness is better, can improve voice coil motor's reliability.
The two connecting pieces 31 on the lower elastic piece 3 are both solid pieces without holes, and the two connecting pieces 31 on the lower elastic piece 3 are melted by laser welding and then respectively cover the incoming line 21 and the outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 to form connection.
The laser welding mode is very efficient and stable, the production efficiency and the yield can be greatly improved, and the cost of a part of turnover jigs can be saved due to the improvement of the production efficiency.
The key of laser welding is as follows: the connecting piece 31 of the lower elastic sheet 3 in contact connection with the coil 2 is a solid sheet without an opening. If the connecting sheet 31 is of a perforated structure, the lower spring plate 3 and the coil 2 can only be connected by using solder paste as a connecting medium, and laser welding cannot be directly adopted, because the incoming line 21/outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 and the connecting sheet 31 are of a laminated structure, if laser is drilled in a hole, although the incoming line 21 and the outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 can be melted, the binding post 111 (a plastic part, the melting temperature of which is 200-300 ℃) cannot bear the high temperature of the laser, and the situation that the binding post 111 is bent certainly occurs; if the laser is applied to the position where the coil 2 and the connection piece 31 contact each other on the edge of the hole, it is a problem for the laser having a strict requirement for the focal accuracy because the focal position of the laminated structure is different, and even if the welding is possible, the post 111 is also subject to bending due to the high temperature of the laser.
In the invention, the two connecting pieces 31 on the lower elastic piece 3 are both solid pieces without holes, so that laser can be directly applied to the two connecting pieces 31 to be respectively covered on the incoming line 21 and the outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 after being melted to form connection, wherein the laser welding temperature is 1000-1400 ℃ and the time is 0.01-0.1 s, so as to ensure that the connecting pieces 31 can be melted without damaging the binding post 111.
The lower flange 11 of the carrier 1 is further provided with a plurality of positioning columns 13, and the lower elastic sheet 3 is further provided with a plurality of positioning holes 32 for positioning and limiting the relative position of the lower elastic sheet 3 and the carrier 1 when the lower elastic sheet 3 is installed.
Before the connecting sheet 31 and the coil 2 are welded, the lower elastic sheet 3 is installed on the bottom surface of the carrier 1 through a hot riveting process, so that the manual operation procedures can be reduced, and the assembly efficiency is improved.
Example 2
An assembly method of a carrier, a coil and a lower spring of a voice coil motor, wherein the coil 2 and the lower spring 3 are the assembly structure described in embodiment 1, comprises the following steps:
step 1: providing a carrier 1 and a coil 2, wherein the carrier 1 is of a sleeve structure, an upper convex edge 12 and a lower convex edge 11 are respectively formed at the upper end and the lower end of the carrier 1, and two binding posts 111 are transversely arranged on the outer edge of the lower convex edge 11; winding the coil 2 on a carrier 1, wherein an incoming line 21 and an outgoing line (not shown in the figure, and referring to the incoming line 21) of the coil 2 are respectively wound on two terminals 111 of the carrier 1;
step 2: the lower elastic sheet 3 is arranged on the bottom surface of the carrier 1, and two connecting sheets 31 corresponding to the two binding posts 111 are transversely arranged on the outer edge of the lower elastic sheet 3;
and step 3: the two connecting pieces 31 on the lower elastic sheet 3 are melted and then respectively covered on the incoming line 21 and the outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 to form connection.
The assembly method is simple in process, the two connecting pieces 31 on the lower elastic piece 3 are directly melted and then respectively covered on the incoming line 21 and the outgoing line (not shown in the figure, and the incoming line 21 can be referred to), and solder paste is not required to be used as a connecting medium between the lower elastic piece 3 and the coil 2. Compared with soldering tin connection in the prior art, the invention can save material cost and labor cost, and has no problems of rosin residue, soldering tin slag and the like; the metal connection between lower shell fragment 3 and the coil 2 compares the soldering tin among the prior art and connects, and packaging efficiency is higher, and the fastness is better, can improve voice coil motor's reliability.
In step 3, the two connecting pieces 31 on the lower elastic piece 3 are both solid pieces without holes, and after being melted by laser welding, the two connecting pieces 31 on the lower elastic piece 3 respectively cover the incoming line 21 and the outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 to form connection; the metal connection between the lower elastic sheet 3 and the coil 2 is higher than the firmness of soldering connection in the prior art, and the reliability of the voice coil motor can be improved.
The laser welding mode is very efficient and stable, and the production efficiency and yield are greatly improved; the improvement of production efficiency can save a part of the cost of turnover jig.
The key of laser welding is as follows: the connecting piece 31 of the lower elastic sheet 3 in contact connection with the coil 2 is a solid sheet without an opening. If the connecting sheet 31 is of a perforated structure, the lower spring plate 3 and the coil 2 can only be connected by using solder paste as a connecting medium, and laser welding cannot be directly adopted, because the incoming line 21/outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 and the connecting sheet 31 are of a laminated structure, if laser is drilled in a hole, although the incoming line 21 and the outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 can be melted, the binding post 111 (a plastic part, the melting temperature of which is 200-300 ℃) cannot bear the high temperature of the laser, and the situation that the binding post 111 is bent certainly occurs; if the laser is applied to the position where the coil 2 and the connection piece 31 contact each other on the edge of the hole, it is a problem for the laser having a strict requirement for the focal accuracy because the focal position of the laminated structure is different, and even if the welding is possible, the post 111 is also subject to bending due to the high temperature of the laser.
In the invention, the two connecting pieces 31 on the lower elastic sheet 3 are not provided with holes, so that laser can be directly applied to the two connecting pieces 31 to respectively cover the incoming line 21 and the outgoing line (not shown in the figure, refer to the incoming line 21) of the coil 2 after being melted to form connection.
The lower flange 11 of the carrier 1 is further provided with a plurality of positioning columns 13, and the lower elastic sheet 3 is further provided with a plurality of positioning holes 32 for positioning and limiting the relative position of the lower elastic sheet 3 and the carrier 1 when the lower elastic sheet 3 is installed in the step 2.
In the step 2, the lower elastic sheet 3 is mounted on the bottom surface of the carrier 1 through a hot riveting process, so that the manual operation process can be reduced, and the assembly efficiency is improved, namely, after the positioning holes 32 of the lower elastic sheet 3 and the positioning columns 13 on the carrier 2 are mounted in an aligned mode, the tops of the positioning columns 13 are hot pressed through the hot riveting process to form a mushroom head shape or a drawing pin shape.
Example 3
A voice coil motor comprising the assembly structure of the carrier, the coil and the lower spring as described in embodiment 1.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.
Claims (7)
1. An assembly structure of a carrier, a coil and a lower elastic sheet of a voice coil motor comprises the carrier, the coil wound on the carrier and the lower elastic sheet matched with the bottom of the carrier; the carrier is of a sleeve structure, an upper convex edge and a lower convex edge are respectively formed at the upper end and the lower end of the carrier, and the coil is wound between the upper convex edge and the lower convex edge; the outer edge of the lower convex edge is transversely provided with two binding posts, and the outer edge of the lower elastic sheet is transversely provided with two connecting sheets respectively corresponding to the two binding posts; the coil is characterized in that two connecting pieces on the lower elastic piece are respectively covered on the outgoing line and the incoming line of the coil to form connection after being melted in a laser welding mode, the connecting pieces are made of metal materials and are solid pieces without holes, and the binding posts are made of plastic materials.
2. The assembly structure of a carrier, a coil and a lower spring plate of a voice coil motor as claimed in claim 1, wherein the lower flange of the carrier is further provided with a plurality of positioning posts, and the lower spring plate is further provided with a plurality of positioning holes.
3. The assembly structure of a carrier, a coil and a lower spring of a voice coil motor according to claim 2, wherein the lower spring is mounted on the bottom surface of the carrier through a hot riveting process.
4. A method for assembling a carrier, a coil and a lower elastic sheet of a voice coil motor is characterized by comprising the following steps:
step 1: providing a carrier and a coil, wherein the carrier is of a sleeve structure, an upper convex edge and a lower convex edge are respectively formed at the upper end and the lower end of the carrier, and two binding posts are transversely arranged on the outer edge of the lower convex edge; winding the coil on a carrier, wherein an outgoing line and an incoming line of the coil are respectively wound on two binding posts of the carrier, and the binding posts are made of plastic materials;
step 2: a lower elastic sheet is arranged on the bottom surface of the carrier, two connecting sheets which respectively correspond to the two binding posts are transversely arranged on the outer edge of the lower elastic sheet, and the connecting sheets are made of metal and are solid sheets without holes;
and step 3: and melting the two connecting pieces on the lower elastic piece in a laser welding mode, and then respectively covering the outgoing line and the incoming line of the coil to form connection.
5. The method for assembling a carrier, a coil and a lower spring plate of a voice coil motor according to claim 4, wherein the lower flange of the carrier is further provided with a plurality of positioning posts, and the lower spring plate is further provided with a plurality of positioning holes; and the lower elastic sheet is used for positioning and limiting the relative position of the lower elastic sheet and the carrier when the lower elastic sheet is installed in the step 2.
6. The method for assembling a carrier, a coil and a lower spring of a voice coil motor according to claim 5, wherein the lower spring is mounted on the bottom surface of the carrier through a hot riveting process in step 2.
7. A voice coil motor comprising the assembly structure of the carrier, the coil and the lower spring as set forth in any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610997128.9A CN106655652B (en) | 2016-11-14 | 2016-11-14 | Carrier, coil and lower elastic sheet assembly structure and method and voice coil motor |
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| CN201610997128.9A CN106655652B (en) | 2016-11-14 | 2016-11-14 | Carrier, coil and lower elastic sheet assembly structure and method and voice coil motor |
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| CN106655652B true CN106655652B (en) | 2020-06-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108372369A (en) * | 2018-03-27 | 2018-08-07 | 苏州聚力电机有限公司 | A kind of typesetting design of the novel shrapnel of voice coil motor |
| CN108465956A (en) * | 2018-03-27 | 2018-08-31 | 苏州聚力电机有限公司 | A kind of new typesetting design of voice coil motor shrapnel |
| CN108667262B (en) * | 2018-04-20 | 2024-04-19 | 深圳市丘钛微电子科技有限公司 | Method for manufacturing voice coil motor and voice coil motor |
| CN111865015B (en) * | 2020-07-30 | 2022-09-09 | 福州可源电子有限公司 | Coil processing technology |
| CN112222616B (en) * | 2020-09-09 | 2022-08-26 | 深圳市艾雷激光科技有限公司 | Laser welding method and voice coil motor |
| CN113478239B (en) * | 2021-07-06 | 2022-10-11 | 包头江馨微电机科技有限公司 | Double-track production system for voice coil motor |
Citations (4)
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| CN102412694A (en) * | 2011-12-10 | 2012-04-11 | 东莞市旭业光电科技有限公司 | Voice coil motor and assembly process thereof |
| CN103312108A (en) * | 2012-03-16 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and manufacturing method thereof |
| CN104308350A (en) * | 2014-09-26 | 2015-01-28 | 昆山威赛机电科技有限公司 | Assembly method of rotor in voice coil motor |
| CN104741721A (en) * | 2015-04-13 | 2015-07-01 | 广州鑫仕光电科技有限公司 | Welding process of flexible circuit board and voice coil motor pin |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI317202B (en) * | 2006-07-28 | 2009-11-11 | Ind Tech Res Inst | Actuator |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412694A (en) * | 2011-12-10 | 2012-04-11 | 东莞市旭业光电科技有限公司 | Voice coil motor and assembly process thereof |
| CN103312108A (en) * | 2012-03-16 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor and manufacturing method thereof |
| CN104308350A (en) * | 2014-09-26 | 2015-01-28 | 昆山威赛机电科技有限公司 | Assembly method of rotor in voice coil motor |
| CN104741721A (en) * | 2015-04-13 | 2015-07-01 | 广州鑫仕光电科技有限公司 | Welding process of flexible circuit board and voice coil motor pin |
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