CN108667262B

CN108667262B - Method for manufacturing voice coil motor and voice coil motor

Info

Publication number: CN108667262B
Application number: CN201810362216.0A
Authority: CN
Inventors: 潘涛
Original assignee: Shenzhen QTech Microelectronic Technology Co ltd
Current assignee: Shenzhen QTech Microelectronic Technology Co ltd
Priority date: 2018-04-20
Filing date: 2018-04-20
Publication date: 2024-04-19
Anticipated expiration: 2038-04-20
Also published as: CN108667262A

Abstract

The invention discloses a voice coil motor and a manufacturing method thereof, wherein the manufacturing method of the voice coil motor comprises the following steps: providing a winding part, wherein the winding part comprises a support body, and a winding post is arranged on the support body; providing a lower spring, wherein the lower spring comprises at least two spring bodies, and a third connecting position and a fourth connecting position of the support body are respectively and electrically connected with different spring bodies of the lower spring; a coil is arranged on a winding column of the support body, and two ends of the coil are respectively and electrically connected with a first connecting position and a second connecting position of the support body; the carrier is formed by injection molding. According to the voice coil motor and the manufacturing method thereof, the coil is electrically connected with the winding part, the winding part is electrically connected with the lower spring, so that the conductive connection of the coil and the lower spring is realized, enameled wires of the coil are not required to be removed, workers are not required to arrange wire heads, the production efficiency and the cost are improved, the problem that welding points are exposed is solved, the welding points can be ensured to be stable for a long time, the process difficulty is reduced, and the consumption of glue consumable materials caused by encapsulation treatment is avoided.

Description

Method for manufacturing voice coil motor and voice coil motor

Technical Field

The present invention relates to the field of camera technologies, and in particular, to a method for manufacturing a voice coil motor and a voice coil motor.

Background

With the progress of scientific technology, the application of cameras is more and more widespread, and at present, cameras are arranged on electronic products such as cameras, mobile phones, computers and the like, so that people can take photos anytime and anywhere conveniently, and convenience and fun are brought to the life of people.

At present, in the production of an automatic focusing voice coil motor, a carrier and a lower spring piece are generally formed respectively, a coil is wound on the carrier, and then the end head of the coil is electrically connected to the lower spring piece by a solder paste welding mode or a resistance welding mode and the like, and the lower spring piece is fixed. However, this production method has the following problems:

First, when coil and lower spring electricity are connected, the coil top layer has insulating paint coating, needs wire winding supplier to remove paint coating and handles, or voice coil motor mill arranges manual work by oneself or equipment to get rid of, can increase cost and process like this, if get rid of manually still can require higher to the operating personnel, training personnel more difficultly. The mode of solder paste addition and welding is needed after the paint coating is removed, so that the solder paste is added, and the cost of raw materials is increased. And after the solder paste is added, the huge risk of foreign matters generated by the soldering flux is increased, so that the subsequent process also needs to be cleaned by adding liquid medicine. Some manufacturers use resistance welding, which also requires the size of the carrier pads, resulting in difficult motor miniaturization.

Secondly, if the coil is welded with the lower spring, and the coating is not removed, and other welding modes are adopted, staff is required to tidy the thread ends, so that labor cost is increased, staff training is very difficult, a large number of staff are required to be trained to achieve a certain yield, and once the staff leaves the work, the yield of the production line is greatly reduced.

Thirdly, the welding point of coil and lower spring leaks outward, and current technological process is for needing the rubber coating to handle, otherwise can produce the foreign matter problem, can't guarantee simultaneously that the welding point is firm for a long time, has increased the technology degree of difficulty, has also increased glue consumptive material consumption.

Fourth, the coil is very easy to break in the reliability test from the welding point position of the coil and the lower spring to the line segment between the coil body, so that the voice coil motor has poor open circuit.

Fifth, the lower spring piece is connected with the carrier, and a glue bonding mode, a heat riveting mode or both glue and heat riveting mode are needed, which increases the complexity of the process and the cost caused by the consumption of the glue.

Sixth, the conventional production process requires a large number of tool jigs, which also results in high costs.

Seventh, the conventional process is to perform injection molding on the carrier, and then wind the coil on the carrier, which can cause severe torsion change, and has high requirements on carrier molding manufacturers and winding manufacturers. Meanwhile, the management difficulty of VCM automatic focusing motor manufacturers is also increased.

Disclosure of Invention

The invention aims to provide a manufacturing method of a voice coil motor and the voice coil motor, which are low in cost and high in production efficiency.

The invention provides a manufacturing method of a voice coil motor, which comprises the following steps:

Providing a winding part, wherein the winding part comprises a support body, a winding column is arranged on the support body, and the support body comprises a first connecting position and a third connecting position which are electrically connected with each other, and a second connecting position and a fourth connecting position which are electrically connected with each other;

Providing a lower spring, wherein the lower spring comprises at least two spring bodies, and a third connecting position and a fourth connecting position of the support body are respectively and electrically connected with different spring bodies of the lower spring;

A coil is arranged on a winding column of the supporting body, and two ends of the coil are respectively and electrically connected with a first connecting position and a second connecting position of the supporting body;

The carrier is formed by injection molding so that the winding part is partially or entirely embedded in the carrier.

In one embodiment, the method for manufacturing the voice coil motor specifically includes:

providing a bracket, wherein the inner side of the bracket is provided with the winding part;

providing the lower spring;

Assembling the lower spring below the bracket, and electrically connecting the third connecting position and the fourth connecting position of the support body with different spring bodies of the lower spring respectively;

Then forming a carrier in an injection molding mode, so that the winding part is partially or completely embedded into the carrier;

The third connecting position and the fourth connecting position of the supporting body are respectively and electrically connected with different spring bodies of the lower spring, namely the third connecting position of the supporting body is electrically connected with one part of the spring bodies of the at least two spring bodies, and the fourth connecting position of the supporting body is electrically connected with the other part of the spring bodies of the at least two spring bodies.

In one embodiment, the method for manufacturing the voice coil motor specifically comprises the following steps:

Providing the lower spring, and directly integrating the lower spring and the spring body to form the winding part;

The third connecting position and the fourth connecting position of the supporting body are respectively connected with the different spring bodies, namely the third connecting position of the supporting body is connected with one part of the spring bodies in the at least two spring bodies, and the fourth connecting position of the supporting body is connected with the rest part of the spring bodies in the at least two spring bodies.

In one embodiment, the support comprises at least two parts spaced apart from each other, the first connection location and the third connection location being located on one of the parts, the second connection location and the fourth connection location being located on the other part; or the support body is of an integral structure, the support body is divided into at least two parts which are mutually spaced before the carrier is injected, the first connecting position and the third connecting position are positioned on one part after the separation, and the second connecting position and the fourth connecting position are positioned on the other part.

In one embodiment, two parts of the supporting bodies are respectively provided with a wiring terminal, the wiring terminals are arranged on the winding posts of the supporting bodies, the wiring terminals on the two parts of the supporting bodies respectively form the first connecting position and the second connecting position, and two ends of the coil are respectively electrically connected with the wiring terminals on the two supporting bodies.

In one embodiment, the support includes a frame portion and a first connection portion, the frame portion is located at an outer periphery of the winding portion, the winding portion is located at an inner side of the frame portion, and the support is connected to the frame portion through the first connection portion.

In one embodiment, the lower spring further comprises an outer frame part and a second connecting part, wherein the outer frame part corresponds to the frame body part of the bracket; each spring body is connected with the outer frame part through the second connecting part.

In one embodiment, the lower spring further includes a fixing portion, the outer frame portion is located at an outer periphery of the fixing portion, and the fixing portion is located at an inner side of the outer frame portion; one end of each spring body is connected with the fixing part, and the other end of each spring body is connected with the outer frame part; the method for manufacturing the voice coil motor further comprises the steps of: the fixing portion is removed before the carrier is formed.

In one embodiment, the method for manufacturing the voice coil motor further includes the steps of:

removing the first connection part of the bracket after forming the carrier, then providing a base, and removing the frame body part of the bracket, the second connection part and the outer frame part of the lower spring after mounting the bracket, the coil, the lower spring and the carrier assembled into one body to the base, thereby forming a mover part; or after the carrier is formed, the first connecting part is separated from the winding part, then a base is provided, after the bracket, the coil, the lower spring and the carrier which are assembled into a whole are mounted on the base, the frame body part of the bracket, the second connecting part, the first connecting part and the outer frame part of the lower spring are removed, so that a rotor part is formed;

Providing a stator part comprising a housing and a magnet, the magnet being mounted within the housing, an upper spring being mounted at the bottom within the housing;

And reversely buckling the shell of the stator part on the base of the rotor part to combine the stator part and the rotor part together, wherein the magnet is positioned at the periphery of the coil, and the upper spring and the lower spring are respectively positioned at the top and the bottom of the carrier.

In one embodiment, the support body is further provided with at least two first conductive terminals, each spring body is provided with a second conductive terminal, each second conductive terminal on the spring body is respectively corresponding to each first conductive terminal on the support body and is electrically connected together, the third connection position and the fourth connection position are respectively located at two different first conductive terminals, and the first conductive terminals on the two different spring bodies form the third connection position and the fourth connection position.

In one embodiment, the lower spring further includes a first connection portion, an outer frame portion, and a second connection portion, each spring body is connected to the outer frame portion through the second connection portion, and the support body is connected to the outer frame portion through the first connection portion.

removing the first connection portion after forming the carrier, and then providing a base, and removing an outer frame portion and a second connection portion of the lower spring after mounting the coil, the lower spring, and the carrier assembled as one body to the base, thereby forming a mover portion; or after the carrier is formed, the first connecting part is separated from the winding part, then a base is provided, and after the coil, the lower spring and the carrier which are assembled into a whole are mounted on the base, the outer frame parts of the first connecting part, the second connecting part and the lower spring are removed, so that a rotor part is formed;

The present invention also provides a voice coil motor including:

the winding part comprises at least two mutually spaced supporting bodies, and each supporting body is provided with a winding post;

the coil is arranged on the winding posts of the supporting bodies, and two ends of the coil are respectively and electrically connected with the two supporting bodies;

A lower spring comprising at least two mutually spaced apart spring bodies, wherein the two support bodies are respectively electrically connected with different spring bodies of the lower spring;

a carrier in which the winding portion is partially or entirely embedded;

Wherein, two of the supporting bodies are respectively electrically connected with different spring bodies of the lower spring, namely, one of the supporting bodies is electrically connected with one part of the spring bodies of the at least two spring bodies, and the other supporting body is electrically connected with the rest part of the spring bodies of the at least two spring bodies.

According to the voice coil motor and the manufacturing method thereof, the coil is electrically connected with the winding part, the winding part is electrically connected with the lower spring, and the coil is in conductive connection with the lower spring, so that enameled wires of the coil are not required to be removed, staff is not required to tidy wire heads, personnel investment is greatly reduced, personnel training is reduced, production efficiency and cost are improved, the problem that welding points are exposed is solved, the welding points are ensured to be stable for a long time, process difficulty is reduced, and consumption of glue consumables caused by encapsulation is avoided. In the manufacturing method of the voice coil motor, the winding part and the lower spring are embedded into the carrier in an injection molding mode to realize fixation, so that the production efficiency is greatly improved, the production cost is reduced, glue is not needed for connecting the lower spring and the carrier, the manufacturing cost is saved on one hand, the problem of glue cracking is avoided on the other hand, and the connection is more reliable.

In one embodiment, two supports electrically connected with the lower spring are respectively provided with a wiring terminal, the wiring terminal is arranged on one winding post of the supports, and two ends of the coil are respectively electrically connected with the wiring terminals on the two supports.

In one embodiment, the support body electrically connected with the lower spring is further provided with a first conductive terminal, each spring body is provided with a second conductive terminal, and each second conductive terminal on the plurality of spring bodies is respectively corresponding to and electrically connected with each first conductive terminal on the winding part.

In one embodiment, the winding portion and the plurality of spring bodies of the lower spring are integrally formed.

In one embodiment, the carrier is formed by injection molding.

In one embodiment, the winding part, the coil, the plurality of spring bodies of the lower spring and the carrier are combined to form a rotor part, the voice coil motor further comprises a stator part, the stator part comprises a shell and a magnet, the magnet is arranged in the shell, an upper spring is arranged at the bottom in the shell, the shell of the stator part is reversely buckled on the base of the rotor part, so that the stator part and the rotor part are combined together, the magnet is positioned at the periphery of the coil, and the upper spring and the lower spring are respectively positioned at the top and the bottom of the carrier.

Drawings

Fig. 1 is a flowchart of a method of manufacturing a voice coil motor according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the bracket in the first embodiment;

fig. 3 is a schematic structural view of a first embodiment in which a coil is provided on a bracket;

FIG. 4 is a schematic view of the structure of the lower spring in the first embodiment;

FIG. 5 is a schematic perspective view of the lower spring of the first embodiment assembled to the bracket, injection molded to the carrier and with the fixing portion removed;

FIG. 6 is a schematic view showing an exploded structure of a mover section in the first embodiment;

FIG. 7 is a schematic view of an assembled structure of the first embodiment with the first connecting portion removed from the mover portion;

fig. 8 is a schematic diagram showing an assembled structure of a stator portion in the first embodiment;

fig. 9 is an exploded view of the stator part before being assembled to the mover part in the first embodiment;

fig. 10 is a schematic structural view of the stator portion assembled to the mover portion in the first embodiment;

FIG. 11 is a flowchart of a method of manufacturing a voice coil motor according to a second embodiment of the present invention;

fig. 12 is a schematic perspective view of a lower spring in the second embodiment.

Fig. 13 is a schematic perspective view of a coil provided on a lower spring in the second embodiment.

Detailed Description

In order to further describe the technical manner and efficacy of the present invention for achieving the intended purpose, the following detailed description of the embodiments, structures, features and efficacy of the invention refers to the accompanying drawings and examples.

First embodiment

As shown in fig. 1, a flowchart of a method for manufacturing a voice coil motor according to a first embodiment of the present invention includes the following steps:

s101, providing a bracket 11, wherein a winding part 12 is arranged on the inner side of the bracket 11, the winding part 12 comprises a support body 121 divided into two parts, and a winding post 122 is arranged on each part of support body 121. The supporting body 121 includes a first connecting position and a third connecting position which are electrically connected with each other, and a second connecting position and a fourth connecting position which are electrically connected with each other, wherein the first connecting position and the second connecting position are respectively positioned on the two separated supporting bodies 121.

In this embodiment, as shown in fig. 2, a plurality of brackets 11 are connected in a strip shape, the plurality of brackets 11 are arranged in a row on the strip, and a winding portion 12 is provided on the inner side of each bracket 11. Through designing a plurality of supports 11 into material belt type structure, be convenient for carry out batch production voice coil motor on the assembly line, improve production efficiency. The support 11 may be rectangular, circular or other shape. The holders 11 may be arranged in a n×n manner, i.e. a plurality of holders 11 are arranged in a matrix.

It will be appreciated that in other embodiments, the support 11 may be a single piece.

In this embodiment, the bracket 11 includes a frame portion 111 and a first connection portion 112, the frame portion 111 is located at the periphery of the winding portion 12, the winding portion 12 is located at the inner side of the frame portion 111, and each portion of the supporting body 121 is connected to the frame portion 111 through the first connection portion 112. In this way, the supporting body 121 of the winding portion 12 is supported by the frame portion 111 and the first connecting portion 112. In this embodiment, each part of the supporting portion 121 includes two ends, and the two ends of each part of the supporting portion 121 are spaced apart from the two ends of the other part of the supporting portion 121, specifically, each part of the supporting body 121 has a substantially two spaced-apart semi-ring structure. In another embodiment, the supporting portion 121 may be formed as a single piece, and in this case, the supporting portion 121 is cut into two parts spaced apart from each other by laser cutting or the like before the subsequent step S105, and the first connection position and the second connection position are respectively located on the two separated parts. In still another embodiment, the supporting body 121 may further include three or more parts spaced apart from each other, wherein two parts are provided with a first connection location and a second connection location, respectively, and the remaining parts are used for supporting the coil 13, which may be connected to the two parts provided with the first connection location and the second connection location in a subsequent step, or maintained in a spaced state.

The winding portion 12 is made of a conductive material. The support 11 may be made of a conductive material or a nonconductive material. When the wire winding portion 12 and the bracket 11 are both made of a conductive material, both may be integrally stamped from metal; when the wire winding portion 12 is made of a conductive material such as metal and the holder 11 is made of a nonconductive material such as plastic, both can be made by injection molding.

S102, a coil 13 is disposed on the winding post 122 of the two support bodies 121, and two ends of the coil 13 are electrically connected to the first connection position on one support body 121 and the second connection position on the other support body 121, respectively.

In the present embodiment, as shown in fig. 3, the coil 13 may be wound on the winding post 122 of the winding portion 12, but is not limited thereto. In other embodiments, the coil 13 may be wound in advance and then sleeved on the winding post 122 of the winding portion 12.

In this embodiment, each portion of the supporting body 121 is provided with a plurality of winding posts 122, and the plurality of winding posts 122 are arranged at intervals along the circumferential direction, so that the coil 13 is formed by winding wires on the plurality of winding posts 122. Of course, the plurality of winding posts 122 may be arranged in a rectangular, oval, or other shape. The winding post 122 may be plate-shaped instead of a plurality of spaced posts.

In this embodiment, two winding posts 122 are respectively provided on the two support bodies 121, and two ends of the coil 13 are respectively electrically connected with the winding posts 123 on the two support bodies 121. The connection terminals 123 on the two support bodies 121 respectively form the first connection position and the second connection position. Specifically, the wire ends at both ends of the coil 13 may be welded to the connection terminals 123 on the two support bodies 121 by laser, and the welding may be tin welding, resistance welding, or the like.

Each supporting body 121 is further provided with a first conductive terminal 124. In the present embodiment, two first conductive terminals 124 are disposed on each supporting body 121 at intervals, and four first conductive terminals 124 are disposed on two supporting bodies 121, but not limited thereto. Specifically, the third connection bit and the fourth connection bit are specifically formed of the above-described two first conductive terminals 124, respectively.

S103, providing a lower spring 15, the lower spring 15 including a plurality of spring bodies 151, the wire winding portion 12 and the plurality of spring bodies 151 being made of an electrically conductive material. It is understood that the number of the spring bodies 151 may be at least two.

In this embodiment, as shown in fig. 4, the number of the lower springs 15 is plural and connected in a strip shape, and the plural lower springs 15 are arranged in a line on the strip, and each lower spring 15 includes plural spring bodies 151 spaced apart from each other. Through designing a plurality of lower springs 15 into the material belt type structure, be convenient for carry out batch production voice coil motor on the assembly line, improve production efficiency. The arrangement of the lower springs 15 may be rectangular, circular or other, and when the lower springs 15 are arranged in a rectangular shape, the plurality of lower springs 15 may be arranged in a n×n manner, that is, the plurality of lower springs 15 are arranged in a matrix.

It will be appreciated that in other embodiments, the lower spring 15 may be a single piece.

In this embodiment, the lower spring 15 further includes an outer frame 152, a second connecting portion 155, and a fixing portion 153, the outer frame 152 is located at the outer periphery of the fixing portion 153, the fixing portion 153 is located at the inner side of the outer frame 152, and the spring body 151 is connected to the outer frame 152 through the second connecting portion 155. The outer frame 152 corresponds to the frame 111 of the bracket 11. One end of each spring body 151 (i.e., an end near the inner side of the fixing portion 153) is connected to the fixing portion 153, and the other end of each spring body 151 (i.e., an end near the outer side of the outer frame portion 152) is connected to the outer frame portion 152. In this way, the plurality of spring bodies 151 are supported by the outer frame 152 and the fixing portion 153. Specifically, the fixing portion 153 is located at a central position of the outer frame portion 152, and the plurality of spring bodies 151 are located between the outer frame portion 152 and the fixing portion 153.

The plurality of spring bodies 151 are made of a conductive material. The outer frame 152 and the fixing portion 153 may be made of a conductive material or a nonconductive material. When the plurality of spring bodies 151, the outer frame portion 152, and the fixing portion 153 are all made of a conductive material, the three may be integrally formed of metal, for example, may be press-formed; when the plurality of spring bodies 151 are made of a conductive material such as metal, the outer frame portion 152 and the fixing portion 153 are made of a non-conductive material such as plastic, the three may be made by injection molding (insert molding).

Each spring body 151 is provided with a second conductive terminal 154, and each second conductive terminal 154 on the plurality of spring bodies 151 corresponds to each first conductive terminal 124 on the winding portion 12. In the present embodiment, the lower spring 15 includes four spring bodies 151 spaced apart from each other, and four second conductive terminals 154 on the four spring bodies 151 are respectively in one-to-one correspondence with four first conductive terminals 124 on the winding portion 12, but is not limited thereto.

In another embodiment, the lower spring 15 may not include the fixing portion 153, and the spring body 151 may be directly connected to the outer frame 152. In this case, the step of removing the fixing portion 153 is not required in the subsequent step S104.

S104, assembling the lower spring 15 below the bracket 11, and electrically connecting the third connection position and the fourth connection position on the two support bodies 121 with the plurality of spring bodies 151 of the lower spring 15, respectively, wherein the first connection position and the third connection position are located on one support body 121, and the second connection position and the fourth connection position are located on the other support body 121. Also, when the lower spring 15 includes the fixing portion 153, step S104 further includes: after the lower spring 15 is assembled below the bracket 11, the fixing portion 153 is removed. Thus, the plurality of spring bodies 151 are separated. In the case where the supporting body 121 is initially of a unitary structure, the third connection position and the fourth connection position of the supporting body 121 are electrically connected to the plurality of spring bodies 151 of the lower spring 15, respectively, and when the supporting body 121 is cut into two parts spaced apart from each other before step S105, the first connection position and the third connection position are located on a part of the supporting body 121 after cutting, and the second connection position and the fourth connection position are located on another part of the supporting body 121 after cutting.

Specifically, as shown in fig. 5, the lower spring 15 is laid under the bracket 11, and the two supporting bodies 121 are electrically connected separately to the plurality of spring bodies 151 of the lower spring 15 by welding the respective second conductive terminals 154 on the plurality of spring bodies 151 with the respective first conductive terminals 124 on the winding portion 12, respectively.

In this embodiment, the two parts of the supporting body 121 are electrically connected to the plurality of spring bodies 151 of the lower spring 15, respectively, that means that the third connection position on one part of the supporting body 121 is electrically connected to one of the plurality of spring bodies 151, and the fourth connection position on the other part of the supporting body 121 is electrically connected to the remaining part of the plurality of spring bodies 151.

In this embodiment, one part of the two supporting bodies 121 of the winding portion 12 is electrically connected to two of the spring bodies 151 of the lower spring 15 by welding between the conductive terminals 154 and 124, and the other part of the supporting bodies 121 is electrically connected to the remaining two spring bodies 151 of the lower spring 15 by welding between the conductive terminals 154 and 124.

In other embodiments, only one first conductive terminal 124 is disposed on each part of the supporting body 121, two first conductive terminals 124 are disposed on both parts of the supporting body 121, the lower spring 15 includes two mutually spaced spring bodies 151, two second conductive terminals 154 on the two spring bodies 151 are respectively in one-to-one correspondence with the two first conductive terminals 124 on the winding portion 12, wherein one part of the supporting body 121 is electrically connected with one of the spring bodies 151 of the lower spring 15 through welding between the conductive terminals 154, 124, and the other part of the supporting body 121 is electrically connected with the remaining other spring body 151 of the lower spring 15 through welding between the conductive terminals 154, 124.

In this embodiment, both ends of the coil 13 are electrically connected to the two support bodies 121 of the winding portion 12, respectively, and the two support bodies 121 are electrically connected to the plurality of spring bodies 151 of the lower spring 15, respectively, so that the conductive connection between the coil 13 and the lower spring 15 is realized.

In another embodiment of the present invention, steps S103 and S104 may be performed first, and then step S102 may be performed, that is, providing the bracket 11, and directly performing step S103 after providing the winding portion 12 inside the bracket 11: providing a lower spring 15, assembling the lower spring 15 below the bracket 11, electrically connecting a third connection position and a fourth connection position on the two parts of the supporting body 121 with the plurality of spring bodies 151 of the lower spring 15 respectively, and then performing step S102, arranging the coil 13 on the winding post 122 of the supporting body 121, and electrically connecting two ends of the coil 13 with the first connection position and the second connection position of the supporting body 121 respectively.

Of course, in other embodiments, there may be other sequences of steps, for example, providing the bracket 11, providing the lower spring 15 while providing the winding portion 12 on the inner side of the bracket 11, then mounting the lower spring 15 under the bracket 11, and electrically connecting the third connection position and the fourth connection position of the support body 121 with different spring bodies 151 of the lower spring 15, respectively, and then providing the coil 13 on the winding post 122 of the support body 121.

Therefore, it should be noted that, in the steps S101 to S104, there is no particular sequence of manufacturing, and it is sufficient that the coil 13 and the lower spring 15 can be electrically connected through the intermediate winding portion. S105, the carrier 17 is then formed by injection molding, and the winding portion 12 is partially or entirely embedded in the carrier 17.

Specifically, as shown in fig. 5, when the carrier 17 is formed by injection molding, the above-mentioned assembled bracket 11, winding part 12, coil 13 and lower spring 15 are put into a cavity of an injection molding machine to be injection molded to form the carrier 17 at the bottom, top and inside of the coil 13. The carrier 17 is used to carry a lens (not shown).

In forming the carrier 17, the supporting body 121 and the winding posts 122 of the winding portion 12 may be partially or entirely embedded in the carrier 17, and the connection portion (i.e., the second conductive terminal 154 in this embodiment) between each spring body 151 and the winding portion 12 may be partially embedded in the carrier 17, entirely embedded in the carrier 17, or entirely not embedded in the carrier 17.

Further, the method for manufacturing the voice coil motor in the embodiment may further include the steps of:

s106, as shown in fig. 6 and 7, in the present embodiment, after the carrier 17 is formed, the first connection portion 112 is removed, and then the base 19 is provided, and after the coil 13, the lower spring 15, and the carrier 17, which are integrally formed, are mounted to the base 19, the frame portion 111 of the bracket 11, the second connection portion 155 of the lower spring 15, and the outer frame portion 152 are removed, thereby forming the mover portion 10.

Specifically, the frame body 111 and the first connection portion 112 of the bracket 11 and the second connection portion 155 and the outer frame portion 152 of the lower spring 15 may be removed by laser cutting or the like. After removing these surplus materials, the remaining wire winding portion 12, coil 13, the plurality of spring bodies 151 of the lower spring 15, carrier 17 and base 19 are combined to form the mover section 10. Specifically, one end of the lower spring 15 is fixedly connected to the base 19. When the integrally assembled bracket 11, coil 13, lower spring 15 and carrier 17 are mounted to the base 19, the spring body 151 of the lower spring 15 is electrically connected to the base 19.

Specifically, the spring body 151 is further provided with a plurality of first connection terminals 157, the base 19 includes a main body 192, a plurality of second connection terminals 193 are provided on the main body 192, and the spring body 151 of the lower spring 15 and the base 19 are electrically connected through corresponding connection of the plurality of first connection terminals 157 and the plurality of second connection terminals 193. Base 19 also includes a connector 194 fixedly coupled to body portion 192, wherein connector 194 may be a single connector 194 or a plurality of connectors 194 may be coupled together to couple together a plurality of mover portions 10.

It is understood that in other embodiments, step S106 may also be:

After the carrier 17 is formed, the first connection part 112 is separated from the winding part 12, and then the base 19 is provided, and after the integrally assembled bracket 11, coil 13, lower spring 15, and carrier 17 are mounted to the base 19, the frame part 111 of the bracket 11, the second connection part 155, and the first connection part 112 and the outer frame part 152 of the lower spring 15 are removed, thereby forming the mover part 10.

S107, as shown in fig. 8, a stator portion 20 is provided, the stator portion 20 including a housing 21 and a magnet 25, the magnet 25 being mounted in the housing 21, an upper spring 30 being mounted at the bottom in the housing 21.

S108, as shown in fig. 9 and 10, the housing 21 of the stator part 20 is inversely fastened to the base 19 of the mover part 10, so that the stator part 20 and the mover part 10 are combined together, the magnet 25 is located at the outer circumference of the coil 13, and the upper spring 30 and the lower spring 15 are located at the top and bottom of the carrier 17, respectively, thereby assembling the voice coil motor.

Specifically, after the stator portion 20 and the mover portion 10 are combined together, the joint 194 is removed by laser cutting or the like, thereby dividing into a plurality of independent voice coil motors.

Specifically, the upper spring 30 has an inner end connected to the carrier 17 and an outer end connected to the housing 21. The lower spring 15 is connected at its inner end to the carrier 17 and at its outer end to a base (not shown) fixed opposite the housing 21. Thus, when the coil 13 is electrified, under the action of the magnet 25, magnetic force can be generated to push the mover part 10 to linearly move relative to the stator part 20, so that focusing of the lens is realized, and the current in the coil 13 is different, and the generated magnetic force is different correspondingly. The upper spring 30 and the lower spring 15 serve to hold the mover portion 10 so that the movement is smooth and a restoring effect is exerted.

The number of the first connection bits may be one, two or more, the number of the second connection bits, the third connection bits and the fourth connection bits may be one, two or more, and the number of the connection bits may be unequal. It will be appreciated that in order to form a closed circuit, both ends of the coil 13 need to be connected to the positive and negative poles of the power supply, while the positive pole of the power supply is connected to a part of the spring body 151 of the lower spring 15 and the negative pole is connected to another part of the spring body 151, in this embodiment the connection of the circuit is achieved by a part of the support body 121 being connected to a part of the spring body 151 and another part of the support body 121 being connected to another part of the spring body 151. It can be seen that one end of the coil 13 may be connected to one or more first connection locations on a portion of the support body 121, and one or more spring bodies 151 may be connected to one or more third connection locations on the portion of the support body 121, so that a circuit is connected; the other end of the coil 13 is connected in the same manner.

In the manufacturing method of the voice coil motor, the winding part 12 and the lower spring 15 are embedded into the carrier 17 in an injection molding mode to realize fixation, so that the production efficiency is greatly improved, the production cost is reduced, glue is not needed for connecting the lower spring 15 and the carrier 17, the manufacturing cost is saved, the problem of glue cracking is avoided, and the connection is more reliable; meanwhile, through electrically connecting the coil 13 with the winding part 12, the winding part 12 is electrically connected with the lower spring 15, so that the conductive connection of the coil 13 and the lower spring 15 is realized, enameled wires of the coil are not required to be removed, staff is not required to tidy wire heads, personnel investment is greatly reduced, personnel training is reduced, production efficiency and cost are improved, the problem that welding points are exposed is solved, the welding points are ensured to be stable for a long time, process difficulty is reduced, and consumption of glue consumable materials caused by encapsulation is avoided.

Second embodiment

As shown in fig. 11, a flowchart of a method for manufacturing a voice coil motor according to a second embodiment of the present invention is different from the first embodiment in that in the present embodiment, the winding portion 12 and the plurality of spring bodies 151 of the lower spring 15 are integrally formed, that is, the winding portion 12 is directly integrally formed with the plurality of spring bodies 151, but in the first embodiment, the winding portion 12 and the plurality of spring bodies 151 of the lower spring 15 are separately formed and electrically connected by welding between the conductive terminals 154 and 124.

The manufacturing method of the voice coil motor of the embodiment comprises the following steps:

S201, as shown in fig. 12, a lower spring 15 is provided, where the lower spring 15 includes a plurality of spring bodies 151, a winding portion 12 is directly formed integrally with the plurality of spring bodies 151, the winding portion 12 and the plurality of spring bodies 151 are made of conductive materials, the winding portion 12 includes a support body 121 divided into two parts, a winding post 122 is provided on each part of support body 121, the support body 121 includes a first connection position and a third connection position electrically connected to each other, and a second connection position and a fourth connection position electrically connected to each other, and the first connection position and the second connection position are respectively located on the divided two parts of support body 121. The third connection point on one part of the supporting body 121 and the fourth connection point on the other part of the supporting body 121 are respectively connected with the plurality of spring bodies 151. It is understood that the number of the spring bodies 151 may be at least two.

In this embodiment, each part of the supporting portion 121 includes two ends, and the two ends of each part of the supporting portion 121 are spaced apart from the two ends of the other part of the supporting portion 121, specifically, each part of the supporting body 121 has a substantially two spaced-apart semi-ring structure. In another embodiment, the supporting portion 121 may be formed in a ring shape, in which case, before the subsequent step S105, the supporting portion 121 is cut into two parts spaced apart from each other by laser cutting, and the third connecting position and the fourth connecting position are respectively located on the two separated parts. In still another embodiment, the supporting body 121 may further include three or more parts spaced apart from each other, wherein a third connection position and a fourth connection position are respectively provided on two parts, and the remaining parts are used for supporting the coil 13, which may be connected to the two parts provided with the third connection position and the fourth connection position in a subsequent step, or maintained in a spaced state.

In this embodiment, the number of the lower springs 15 is plural and connected in a strip shape, and the plural lower springs 15 are arranged in a line on the strip, and each lower spring 15 includes plural spring bodies 151 spaced apart from each other. Through designing a plurality of lower springs 15 into the material belt type structure, be convenient for carry out batch production voice coil motor on the assembly line, improve production efficiency. The lower springs 15 may be arranged in a rectangular shape, a circular shape, or other shapes, and when the lower springs 15 are arranged in a rectangular shape, the plurality of lower springs 15 may be arranged in a n×n manner, that is, the plurality of lower springs 15 are arranged in a matrix.

In this embodiment, the two-part support 121 is generally two spaced-apart half-ring structures.

In this embodiment, the lower spring 15 further includes an outer frame 152, a second connecting portion 155, and a fixing portion 153, the outer frame 152 is located at the outer periphery of the fixing portion 153, the fixing portion 153 is located at the inner side of the outer frame 152, and the spring body 151 is connected to the outer frame 152 through the second connecting portion 155. The support body 121 is connected to the outer frame 152 via the first connection portion 112. One end of each spring body 151 (i.e., an end near the inner side of the fixing portion 153) is connected to the fixing portion 153, and the other end of each spring body 151 (i.e., an end near the outer side of the outer frame portion 152) is connected to the outer frame portion 152. In this way, the plurality of spring bodies 151 are supported by the outer frame 152 and the fixing portion 153.

The wire winding portion 12 and the plurality of spring bodies 151 are made of a conductive material. The outer frame 152 and the fixing portion 153 may be made of a conductive material or a nonconductive material. When the wire winding portion 12, the plurality of spring bodies 151, the outer frame portion 152, and the fixing portion 153 are all made of a conductive material, the four may be integrally punched from metal; when the wire winding part 12 and the plurality of spring bodies 151 are made of a conductive material such as metal and the outer frame part 152 and the fixing part 153 are made of a non-conductive material such as plastic, the four can be made by injection molding (insert molding).

In this embodiment, the two parts of the supporting body 121 are respectively connected to the plurality of spring bodies 151 of the lower spring 15, that is, the third connection position on one part of the supporting body 121 is connected to one of the plurality of spring bodies 151, and the fourth connection position on the other part of the supporting body 121 is connected to the remaining part of the plurality of spring bodies 151.

In the present embodiment, the lower spring 15 includes four spring bodies 151 spaced apart from each other, and one part of the two part supports 121 of the winding part 12 is electrically connected by being integrally formed with two of the spring bodies 151 of the lower spring 15, and the other part of the supports 121 is electrically connected by being integrally formed with the remaining two spring bodies 151 of the lower spring 15, but is not limited thereto. In other embodiments, the lower spring 15 includes two spring bodies 151 spaced apart from each other, and one of the two support bodies 121 of the winding portion 12 is electrically connected by being integrally formed with one of the spring bodies 151 of the lower spring 15, and the other support body 121 is electrically connected by being integrally formed with the remaining other spring body 151 of the lower spring 15.

Since the winding portion 12 and the plurality of spring bodies 151 are directly integrally formed, the two supporting bodies 121 can be electrically connected to the plurality of spring bodies 151, respectively, by an integrated structure, it is not necessary to provide the first conductive terminal 124 on each supporting body 121 of the winding portion 12, and it is not necessary to provide the second conductive terminal 154 on each spring body 151.

In another embodiment, the lower spring 15 may not include the fixing portion 153, and the spring body 151 may be directly connected to the outer frame 152. In this case, the step of removing the fixing portion 153 is not required in the subsequent step S202.

S202, as shown in fig. 13, the coil 13 is disposed on the winding posts 122 of the two supporting bodies 121, and both ends of the coil 13 are electrically connected to the first connection position on one part of the supporting bodies 121 and the second connection position on the other part of the supporting bodies 121, respectively. The first connection location and the third connection location are located on the same part of the support body 121, and the second connection location and the fourth connection location are located on another part of the support body 121. Also, when the lower spring 15 includes the fixing portion 153, step S202 further includes: after the coil 13 is provided on the winding post 122 of the support 121, the fixing portion 153 is removed. Thus, the plurality of spring bodies 151 are separated. In the case where the supporting body 121 is initially of a unitary structure, the third connecting position and the fourth connecting position of the supporting body 121 are respectively connected to the plurality of spring bodies 151 of the lower spring 15, and when the supporting body 121 is cut into two parts spaced apart from each other, it is necessary to position the first connecting position and the third connecting position on one part of the supporting body 121 after cutting, and the second connecting position and the fourth connecting position on the other part of the supporting body 121 after cutting.

In the present embodiment, the coil 13 may be wound on the winding post 122 of the winding portion 12, but is not limited thereto. In other embodiments, the coil 13 may be wound in advance and then sleeved on the winding post 122 of the winding portion 12.

In this embodiment, each part of the supporting body 121 is provided with a wiring terminal 123 on a winding post 122, and two ends of the coil 13 are connected with the wiring terminals 123 on the two parts of the supporting body 121. The connection terminals 123 on the two support bodies 121 respectively form the first connection position and the second connection position. Specifically, the wire ends at both ends of the coil 13 may be welded to the connection terminals 123 on the two-part support 121 by means of laser or the like, respectively.

In this embodiment, two ends of the coil 13 are electrically connected with two parts of the supporting bodies 121 of the winding portion 12, and the two parts of the supporting bodies 121 are connected with different spring bodies 151 of the lower spring 15 respectively through an integrated structure, that is, the conductive connection between the coil 13 and the lower spring 15 is realized.

S203, the carrier 17 is then formed by injection molding, and the winding portion 12 is partially or entirely embedded in the carrier 17.

Specifically, when the carrier 17 is formed by injection molding, the above-described assembled winding portion 12, coil 13 and lower spring 15 are put into a cavity of an injection molding machine to be injection molded, so that the carrier 17 is formed by molding the bottom, top and inner sides of the coil 13. The carrier 17 is used to carry a lens (not shown).

In forming the carrier 17, the supporting body 121 and the winding posts 122 of the winding portion 12 may be partially or entirely embedded in the carrier 17, and the connection portion between each spring body 151 and the winding portion 12 may be partially embedded in the carrier 17, entirely embedded in the carrier 17, or entirely not embedded in the carrier 17.

S204, as shown in fig. 6 and 7, after the carrier 17 is formed, the first connection part 112 is removed, and then the base 19 is provided, and after the coil 13, the lower spring 15, and the carrier 17 assembled as one body are mounted to the base 19, the outer frame part 152 and the second connection part 155 of the lower spring 15 are removed, thereby forming the mover part 10.

Specifically, the outer frame 152 of the lower spring 15 may be removed by laser cutting or the like. After removing these surplus materials, the remaining wire winding portion 12, coil 13, a plurality of spring bodies 151 of the lower spring 15, carrier 17 and base 19 are combined to form the mover portion 10. Specifically, one end of the lower spring 15 is fixedly connected to the base 19.

In other embodiments, step S204 may further be:

After the carrier 17 is formed, the first connection part 112 is separated from the winding part 12, and then the base 19 is provided, and after the coil 13, the lower spring 15, and the carrier 17 assembled as one body are mounted to the base 19, the first connection part 112, the second connection part 155, and the outer frame part 152 of the lower spring 15 are removed, thereby forming the mover part 10.

S205, as shown in fig. 8, a stator part 20 is provided, the stator part 20 including a housing 21 and a magnet 25, the magnet 25 being installed in the housing 21, and an upper spring 30 being installed at the bottom in the housing 21.

S206, as shown in fig. 9 and 10, the housing 21 of the stator part 20 is inversely fastened to the base 19 of the mover part 10, so that the stator part 20 and the mover part 10 are combined together, the magnet 25 is located at the outer circumference of the coil 13, and the upper spring 30 and the lower spring 15 are located at the top and bottom of the carrier 17, respectively, thereby assembling the voice coil motor.

In the manufacturing method of the voice coil motor, the winding part 12 and the lower spring 15 are embedded into the carrier 17 in an injection molding mode to realize fixation, so that the production efficiency is greatly improved, the production cost is reduced, glue is not needed for connecting the lower spring 15 and the carrier 17, the manufacturing cost is saved, the problem of glue cracking is avoided, and the connection is more reliable; meanwhile, through electrically connecting the coil 13 with the winding part 12, the winding part 12 is manufactured with the lower spring in an integrated manner, so that the conductive connection of the coil 13 and the lower spring 15 is realized, enameled wires of the coil are not required to be removed, staff is not required to tidy wire heads, personnel investment is greatly reduced, personnel training is reduced, production efficiency and cost are improved, the problem that welding points are exposed is solved, the welding points are ensured to be stable for a long time, process difficulty is reduced, and consumption of glue consumable materials caused by encapsulation is avoided.

Third embodiment

As shown in fig. 2 to 10 and 12 to 13, a third embodiment of the present invention provides a voice coil motor, comprising:

The winding part 12, the winding part 12 comprises two mutually spaced supporting bodies 121, and each supporting body 121 is provided with a winding post 122;

A coil 13 disposed on the winding posts 122 of the two supports 121, both ends of the coil 13 being electrically connected to the two supports 121, respectively;

A lower spring 15, the lower spring 15 including a plurality of spring bodies 151 spaced apart from each other, the winding portion 12 and the plurality of spring bodies 151 each being made of a conductive material, the two supporting bodies 121 being electrically connected with different spring bodies 151 of the lower spring 15, respectively; it is understood that the number of the spring bodies 151 may be at least two.

The carrier 17, and the winding portion 12 is partially or entirely embedded in the carrier 17.

In the present invention, the two supporting bodies 121 are electrically connected to different spring bodies 151 of the lower spring 15, respectively, that is, one supporting body 121 is electrically connected to one part of the spring bodies 151 of the plurality of spring bodies 151, and the other supporting body 121 is electrically connected to the remaining part of the spring bodies 151 of the plurality of spring bodies 151.

Specifically, the two supports 121 may be generally two spaced-apart half-ring structures.

Specifically, the coil 13 may be wound on the winding post 122 of the winding part 12, but is not limited thereto. The coil 13 may be wound in advance and then fitted over the winding leg 122 of the winding portion 12.

Each supporting body 121 may be provided with a plurality of winding posts 122, and the plurality of winding posts 122 are arranged at intervals along the circumferential direction, so that the wire is conveniently wound on the plurality of winding posts 122 to form the coil 13. Of course, the plurality of winding posts 122 may be arranged in a rectangular, oval, or other shape. The winding post 122 may be plate-shaped instead of a plurality of spaced posts.

Specifically, two supporting bodies 121 are respectively provided with a wiring terminal 123 on a winding post 122, and two ends of the coil 13 are respectively electrically connected with the wiring terminals 123 on the two supporting bodies 121. Specifically, the wire ends at both ends of the coil 13 may be welded to the connection terminals 123 on the two supporting bodies 121 by laser, and the welding method may be tin welding, resistance welding, or the like.

In one embodiment, each supporting body 121 is further provided with a first conductive terminal 124, each spring body 151 is provided with a second conductive terminal 154, and the second conductive terminals 154 on the plurality of spring bodies 151 respectively correspond to the first conductive terminals 124 on the winding portion 12 and are welded together, so that the two supporting bodies 121 are respectively electrically connected with the plurality of spring bodies 151 of the lower spring 15, that is, the winding portion 12 and the plurality of spring bodies 151 of the lower spring 15 are in a split structure and are electrically connected through welding between the conductive terminals 154 and 124. For example, two first conductive terminals 124 are disposed on each support 121 at intervals, four first conductive terminals 124 are disposed on two supports 121, the lower spring 15 includes four spring bodies 151 spaced apart from each other, and four second conductive terminals 154 on the four spring bodies 151 are respectively in one-to-one correspondence with and welded to the four first conductive terminals 124 on the winding portion 12, so that one of the supports 121 is electrically connected to two of the spring bodies 151 of the lower spring 15 by welding between the conductive terminals 154, 124, and the other support 121 is electrically connected to the remaining two spring bodies 151 of the lower spring 15 by welding between the conductive terminals 154, 124. For another example, only one first conductive terminal 124 is disposed on each supporting body 121, two first conductive terminals 124 are disposed on two supporting bodies 121, the lower spring 15 includes two mutually spaced spring bodies 151, two second conductive terminals 154 on the two spring bodies 151 are respectively corresponding to the two first conductive terminals 124 on the winding portion 12 one by one and are mutually welded together, so that one supporting body 121 is electrically connected with one of the spring bodies 151 of the lower spring 15 through welding between the conductive terminals 154, 124, and the other supporting body 121 is electrically connected with the remaining other spring body 151 of the lower spring 15 through welding between the conductive terminals 154, 124.

In another embodiment, the winding part 12 and the plurality of spring bodies 151 of the lower spring 15 are integrally formed, that is, the winding part 12 is directly integrally formed with the plurality of spring bodies 151, so that the two supporting bodies 121 are separately electrically connected with the plurality of spring bodies 151 of the lower spring 15. For example, the lower spring 15 includes four spring bodies 151 spaced apart from each other, and one of the two support bodies 121 of the winding part 12 is electrically connected by being integrally formed with two of the spring bodies 151 of the lower spring 15, and the other support body 121 is electrically connected by being integrally formed with the remaining two spring bodies 151 of the lower spring 15. For another example, the lower spring 15 includes two spring bodies 151 spaced apart from each other, and one of the two support bodies 121 of the winding portion 12 is electrically connected by being integrally formed with one of the spring bodies 151 of the lower spring 15, and the other support body 121 is electrically connected by being integrally formed with the remaining other spring body 151 of the lower spring 15. Since the winding portion 12 and the plurality of spring bodies 151 are directly integrally formed, the two supporting bodies 121 can be electrically connected to the plurality of spring bodies 151 separately by an integrated structure, and therefore, the first conductive terminal 124 does not need to be provided on each supporting body 121 of the winding portion 12, and the second conductive terminal 154 does not need to be provided on each spring body 151.

The coil 13 and the lower spring 15 are electrically connected by the two ends of the coil 13 being electrically connected to the two supporting bodies 121 of the winding portion 12, and the two supporting bodies 121 being electrically connected to the plurality of spring bodies 151 of the lower spring 15, respectively.

Specifically, the carrier 17 is formed by injection molding, and when the carrier 17 is formed by injection molding, the assembled winding portion 12, coil 13, and lower spring 15 are put into a cavity of an injection molding machine to be injection molded, so that the carrier 17 is formed at the bottom, top, and inside of the coil 13. The carrier 17 is used to carry a lens (not shown).

When the carrier 17 is formed, the two supporting bodies 121 and the winding posts 122 of the winding portion 12 may be partially or entirely embedded in the carrier 17, and the connection portion between each spring body 151 and the winding portion 12 may be partially embedded in the carrier 17.

Wherein the winding part 12, the coil 13, the plurality of spring bodies 151 of the lower spring 15, the carrier 17 and the base 19 are combined to form the mover part 10.

Specifically, the spring body 151 is further provided with a plurality of first connection terminals 157, the base 19 includes a main body 192, a plurality of second connection terminals 193 are provided on the main body 192, and the spring body 151 of the lower spring 15 and the base 19 are electrically connected through corresponding connection of the plurality of first connection terminals 157 and the plurality of second connection terminals 193.

Further, the voice coil motor of the present embodiment further includes a stator part 20, the stator part 20 includes a housing 21 and a magnet 25, the magnet 25 is installed in the housing 21, an upper spring 30 is installed at the bottom in the housing 21, the housing 21 of the stator part 20 is inversely fastened to the base 19 of the mover part 10, so that the stator part 20 and the mover part 10 are combined together, the magnet 25 is located at the outer circumference of the coil 13, and the upper spring 30 and the lower spring 15 are located at the top and bottom of the carrier 17, respectively, thereby assembling the voice coil motor.

In the voice coil motor, the winding part 12 and the lower spring 15 are embedded into the carrier 17 in an injection molding mode to realize fixation, so that the production efficiency is greatly improved, the production cost is reduced, glue is not needed for connecting the lower spring 15 with the carrier 17, on one hand, the manufacturing cost is saved, on the other hand, the problem of glue cracking is avoided, and the connection is more reliable; meanwhile, through electrically connecting the coil 13 with the winding part 12, the winding part 12 is electrically connected with the lower spring 15, so that the conductive connection of the coil 13 and the lower spring 15 is realized, enameled wires of the coil are not required to be removed, staff is not required to tidy wire heads, personnel investment is greatly reduced, personnel training is reduced, production efficiency and cost are improved, the problem that welding points are exposed is solved, the welding points are ensured to be stable for a long time, process difficulty is reduced, and consumption of glue consumable materials caused by encapsulation is avoided.

The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.

Claims

1. A method of manufacturing a voice coil motor, comprising the steps of:

Providing a winding part (12), wherein the winding part (12) comprises a support body (121), a winding column (122) is arranged on the support body (121), and the support body (121) comprises a first connecting position and a third connecting position which are electrically connected with each other, and a second connecting position and a fourth connecting position which are electrically connected with each other;

Providing a lower spring (15), wherein the lower spring (15) comprises at least two spring bodies (151), and a third connection position and a fourth connection position of the support body (121) are respectively electrically connected with different spring bodies (151) of the lower spring (15);

a coil (13) is arranged on a winding column (122) of the supporting body (121), and two ends of the coil (13) are respectively and electrically connected with a first connection position and a second connection position of the supporting body (121);

forming a carrier (17) by injection molding, so that the winding part (12) is partially or completely embedded in the carrier (17);

wherein the support body (121) comprises at least two parts spaced apart from each other, a first connection location and a third connection location being located on one of the parts, a second connection location and a fourth connection location being located on the other part; or the support body (121) is of an integral structure, the support body (121) is divided into at least two parts which are mutually spaced before the carrier (17) is injected, the first connecting position and the third connecting position are positioned on one part after the separation, and the second connecting position and the fourth connecting position are positioned on the other part.

2. The method for manufacturing a voice coil motor according to claim 1, characterized in that the method for manufacturing a voice coil motor specifically comprises:

providing a bracket (11), wherein the inner side of the bracket (11) is provided with the winding part (12);

Providing the lower spring (15);

Assembling the lower spring (15) below the bracket (11), and electrically connecting the third connection position and the fourth connection position of the support body (121) with different spring bodies (151) of the lower spring (15) respectively;

Then forming a carrier (17) by injection molding, so that the winding part (12) is partially or completely embedded in the carrier (17);

The third connection position and the fourth connection position of the supporting body (121) are respectively electrically connected with different spring bodies (151) of the lower spring (15), which means that the third connection position of the supporting body (121) is electrically connected with one part of the spring bodies (151) of the at least two spring bodies (151), and the fourth connection position of the supporting body (121) is electrically connected with the rest part of the spring bodies (151) of the at least two spring bodies (151).

3. The method for manufacturing a voice coil motor according to claim 1, characterized in that the method for manufacturing a voice coil motor specifically comprises:

Providing the lower spring (15), and forming the winding part (12) directly integrally with the spring body (151);

The third connection position and the fourth connection position of the supporting body (121) are respectively connected with the different spring bodies (151), which means that the third connection position of the supporting body (121) is connected with one part of the spring bodies (151) in the at least two spring bodies (151), and the fourth connection position of the supporting body (121) is connected with the rest part of the spring bodies (151) in the at least two spring bodies (151).

4. The method for manufacturing a voice coil motor according to claim 1, wherein two parts of the supporting body (121) are respectively provided with a connection terminal (123), the connection terminal (123) is provided on a winding post (122) of the supporting body (121), the connection terminals (123) on the two parts of the supporting body (121) respectively form the first connection position and the second connection position, and two ends of the coil (13) are respectively electrically connected with the connection terminals (123) on the two supporting bodies (121).

5. A method of manufacturing a voice coil motor according to claim 2, wherein the bracket (11) includes a frame portion (111) and a first connection portion (112), the frame portion (111) is located at an outer periphery of the winding portion (12), the winding portion (12) is located inside the frame portion (111), and the support body (121) is connected to the frame portion (111) through the first connection portion (112).

6. The method of manufacturing a voice coil motor according to claim 5, wherein the lower spring (15) further includes an outer frame portion (152) and a second connecting portion (155), the outer frame portion (152) corresponding to the frame body portion (111) of the bracket (11); each spring body (151) is connected to the outer frame (152) through the second connection portion (155).

7. The method of manufacturing a voice coil motor according to claim 6, wherein the lower spring (15) further comprises a fixing portion (153), the outer frame portion (152) is located at an outer periphery of the fixing portion (153), and the fixing portion (153) is located at an inner side of the outer frame portion (152); one end of each spring body (151) is connected with the fixing part (153), and the other end of each spring body (151) is connected with the outer frame part (152); the method for manufacturing the voice coil motor further comprises the steps of: the fixing portion (153) is removed before the carrier (17) is formed.

8. The method of manufacturing a voice coil motor of claim 6, further comprising the steps of:

After the carrier (17) is formed, removing the first connecting portion (112) of the bracket (11), then providing a base (19), mounting the bracket (11), coil (13), lower spring (15) and carrier (17) assembled into one body to the base (19), and removing the frame portion (111), second connecting portion (155) and outer frame portion (152) of the lower spring (15) of the bracket (11), thereby forming a mover portion (10); or after the carrier (17) is formed, the first connecting part (112) is separated from the winding part (12), then the base (19) is provided, after the bracket (11), the coil (13), the lower spring (15) and the carrier (17) which are assembled into a whole are mounted on the base (19), the frame part (111), the second connecting part (155) and the first connecting part (112) of the bracket (11) and the outer frame part (152) of the lower spring (15) are removed, so that the rotor part (10) is formed;

Providing a stator part (20), the stator part (20) comprising a housing (21) and a magnet (25), the magnet (25) being mounted in the housing (21), an upper spring (30) being mounted at the bottom in the housing (21);

The housing (21) of the stator part (20) is inversely fastened to the base (19) of the mover part (10) so that the stator part (20) and the mover part (10) are combined together, the magnet (25) is located at the periphery of the coil (13), and the upper spring (30) and the lower spring (15) are located at the top and bottom of the carrier (17), respectively.

9. A method of manufacturing a voice coil motor according to claim 2, wherein the support body (121) is further provided with at least two first conductive terminals (124), each spring body (151) is provided with a second conductive terminal (154), the second conductive terminals (154) of the spring bodies (151) are respectively associated with and electrically connected to the first conductive terminals (124) of the support body (121), and the first conductive terminals (124) of two different spring bodies form the third connection location and the fourth connection location.

10. A method of manufacturing a voice coil motor according to claim 3, wherein the lower spring (15) further comprises a first connection portion (112), an outer frame portion (152) and a second connection portion (155), each spring body (151) is connected to the outer frame portion (152) through the second connection portion (155), and the support body (121) is connected to the outer frame portion (152) through the first connection portion (112).

11. The method of manufacturing a voice coil motor according to claim 10, wherein the lower spring (15) further comprises a fixing portion (153), the outer frame portion (152) is located at an outer periphery of the fixing portion (153), and the fixing portion (153) is located at an inner side of the outer frame portion (152); one end of each spring body (151) is connected with the fixing part (153), and the other end of each spring body (151) is connected with the outer frame part (152); the method for manufacturing the voice coil motor further comprises the steps of: the fixing portion (153) is removed before the carrier (17) is formed.

12. The method of manufacturing a voice coil motor of claim 10, further comprising the steps of:

After the carrier (17) is formed, the first connection part (112) is removed, then a base (19) is provided, and after the coil (13), the lower spring (15) and the carrier (17) assembled into one body are mounted to the base (19), the outer frame part (152) and the second connection part (155) of the lower spring (15) are removed, thereby forming a mover part (10); or after the carrier (17) is formed, the first connecting part (112) is separated from the winding part (12), then a base (19) is provided, and after the coil (13), the lower spring (15) and the carrier (17) which are assembled into a whole are mounted on the base (19), the first connecting part (112), the second connecting part (155) and the outer frame part (152) of the lower spring (15) are removed, so that the mover part (10) is formed;

13. A voice coil motor, comprising:

A winding part (12), wherein the winding part (12) comprises at least two mutually spaced supporting bodies (121), and a winding post (122) is arranged on each supporting body (121);

A coil (13) provided on a winding post (122) of the support body (121), both ends of the coil (13) being electrically connected to the two support bodies (121), respectively;

-a lower spring (15), the lower spring (15) comprising at least two mutually spaced apart spring bodies (151), wherein the two support bodies (121) are electrically connected to different spring bodies (151) of the lower spring (15), respectively;

A carrier (17) in which the winding portion (12) is partially or entirely embedded;

wherein, two supporting bodies (121) are respectively electrically connected with different spring bodies (151) of the lower spring (15), namely, one supporting body (121) is electrically connected with one part of the spring bodies (151) of the at least two spring bodies (151), and the other supporting body (121) is electrically connected with the rest part of the spring bodies (151) of the at least two spring bodies (151).

14. The voice coil motor according to claim 13, wherein two supports (121) electrically connected to the lower spring are respectively provided with a connection terminal (123), and the connection terminal (123) is disposed on one winding post (122) of the supports (121), and both ends of the coil (13) are respectively electrically connected to the connection terminals (123) on the two supports (121).

15. A voice coil motor according to claim 13, wherein a first conductive terminal (124) is further provided on the support body (121) electrically connected to the lower spring, a second conductive terminal (154) is provided on each spring body (151), and each second conductive terminal (154) on the plurality of spring bodies (151) is electrically connected to and corresponds to each first conductive terminal (124) on the winding portion (12).

16. The voice coil motor according to claim 13, wherein the winding portion (12) and the plurality of spring bodies (151) of the lower spring (15) are of an integral structure.

17. A voice coil motor according to claim 13, characterized in that the carrier (17) is formed by injection moulding.

18. The voice coil motor according to claim 13, wherein the winding part (12), the coil (13), the plurality of spring bodies (151) of the lower spring (15) and the carrier (17) are combined to form a mover part (10), the voice coil motor further comprises a stator part (20), the stator part (20) comprises a housing (21) and a magnet (25), the magnet (25) is mounted in the housing (21), an upper spring (30) is mounted at the bottom in the housing (21), the housing (21) of the stator part (20) is reversely buckled on a base (19) of the mover part (10), the stator part (20) and the mover part (10) are combined together, the magnet (25) is located at the periphery of the coil (13), and the upper spring (30) and the lower spring (15) are located at the top and bottom of the carrier (17), respectively.