CN104105341A

CN104105341A - Pcb coil and voice coil motor

Info

Publication number: CN104105341A
Application number: CN201310127450.2A
Authority: CN
Inventors: 张海洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-10
Filing date: 2013-04-10
Publication date: 2014-10-15

Abstract

The invention is suitable for the field of electronic technology and machinery and provides a PCB coil which is applied to a voice coil motor. The PCB coil contains at least two layers of PCB. Each layer of PCB has a metallic wire conductor which is distributed in a spiral form and a pass-line hole and a bonding pad which are arranged at two ends of the metallic wire conductor. The adjacent communicated two layers of PCB have pass-line holes of the same position, and other pass-line holes are distributed at different positions. The invention also provides the voice coil motor containing the above PCB coil. The PCB coil provided by the invention is a multilayered PCB. As a PCB manufacturing technology is mature, the PCB coil is suitable for large-scale production. Consistency of size and performance of the coil manufactured by the technology is good; manufacturing efficiency is high; reject ratio is low; and manufacturing cost is low.

Description

PCB coil and voice coil motor

Technical field

The present invention relates to electronic technology field and mechanical field, relate in particular to a kind of PCB coil and voice coil motor.

Background technology

The application of voice coil motor relates to a lot of fields such as automation and Precision Machining, by the permanent magnet of the coil of definite shape coiling and collaborative work, fixes by mechanical device, and coil can be with dynamic load to realize high speed, high-precision reciprocating motion.The coil of voice coil motor is higher to shape need, tradition is generally processed by craft or coil winding machine, even but process by coil winding machine, also because the coiling forming process of coil relates to the impact of the factors such as quality, situation, Mould Machining level, producer and the environmental aspect of spooling equipment of wire, cause coil working (machining) efficiency lower, coil rate of finished products is not high, and consistency is bad, corresponding cost is higher, and causes the reliability of its application apparatus to reduce.In addition, after traditional voice coil motor dispatches from the factory, parameter and performance are fixing, and user cannot adjust as required and change.

In summary,, obviously there is in actual use inconvenience and defect in existing voice coil motor, so be necessary to be improved.

Summary of the invention

For above-mentioned defect, the object of the present invention is to provide a kind of PCB coil and voice coil motor, coil dimension and the consistency of performance made by its technique are good, and make efficiency is high, and fraction defective is low, and cost of manufacture is low.

To achieve these goals, the invention provides a kind of PCB coil, be applied to voice coil motor, described PCB coil comprises at least two-layer pcb board, on described every layer of pcb board, there is the wire conductor by spiral, and be arranged at cable-through hole and the pad at described wire conductor two ends, and the two-layer described pcb board of adjacent connection has the identical described cable-through hole in position, and other described cable-through hole is distributed in diverse location.

According to PCB coil of the present invention, the helical form of described wire conductor is rectangular coil shape, round spiral or oval helical form.

According to PCB coil of the present invention, described wire conductor is communicated with by described cable-through hole at the two-layer pcb board being connected.

According to PCB coil of the present invention, described wire conductor is Copper Foil.

According to PCB coil of the present invention, described PCB coil comprises four layers of pcb board.

The present invention also provides a kind of voice coil motor that comprises PCB coil described above.

The present invention passes through at least two-layer the setting of PCB coil pcb board, on described every layer of pcb board, there is the wire conductor by spiral, and be arranged at cable-through hole and the pad at described wire conductor two ends, the two-layer described pcb board of adjacent connection has the identical described cable-through hole in position, and other described cable-through hole is distributed in diverse location.Whereby, PCB coil of the present invention is a multi-layer PCB board, due to PCB manufacturing process maturation, is applicable to large-scale production, and PCB coil dimension and the consistency of performance made by its technique are good, and make efficiency is high, and fraction defective is low, and cost of manufacture is low.

Brief description of the drawings

Fig. 1 is the work schematic diagram of the voice coil motor of prior art;

Fig. 2 is the individual layer PCB schematic diagram of the embodiment of the present invention;

Fig. 3 A is the ground floor PCB structural representation of the double-deck PCB of one embodiment of the invention;

Fig. 3 B is the second layer PCB structural representation of the double-deck PCB of Fig. 3 A illustrated embodiment;

Fig. 3 C is the stacked configuration schematic diagram of the double-deck PCB of Fig. 3 A illustrated embodiment;

Fig. 4 A is the ground floor PCB structural representation of the multi-layer PCB of another embodiment of the present invention;

Fig. 4 B is the second layer PCB structural representation of the multi-layer PCB of Fig. 4 A illustrated embodiment;

Fig. 4 C is the 3rd layer of PCB structural representation of the multi-layer PCB of Fig. 4 A illustrated embodiment;

Fig. 4 D is the 4th layer of PCB structural representation of the multi-layer PCB of Fig. 4 A illustrated embodiment;

Fig. 4 E is the stacked configuration schematic diagram of the multi-layer PCB of Fig. 4 A illustrated embodiment;

Fig. 5 is the structural representation that the PCB coil of one embodiment of the invention coordinates permanent magnet work.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

For a better understanding of the present invention, at this, related art is described.

Fig. 1 is traditional voice coil motor work schematic diagram, and as shown in FIG., coil 101 is installed on permanent magnet 102,103 tops.

In the time of coil electricity, the sense of current that is placed in N level permanent magnet 102 top coil wires is consistent, and with the current opposite in direction that is placed in S level permanent magnet 103 top coil wires, they provide the power of equidirectional for permanent magnet.In the time that the sense of current that driving power provides changes between 1 to 2 and 2 to 1, voice coil motor coil realizes reciprocating motion (direction of arrow that in figure, effective travel indicates is the direction of motion) in its effective travel, thereby band dynamic load realizes reciprocating motion.

Thinking of the present invention is to make coil with PCB, replaces the coil of the conventional metals wire coiling in Fig. 1.

Referring to Fig. 2～Fig. 4, PCB coil of the present invention comprises at least two-layer pcb board 10, on described every layer of pcb board, have by the wire conductor of spiral 20, and be arranged at cable-through hole and the pad at described wire conductor 20 two ends, the two-layer described pcb board 10 of adjacent connection has the identical described cable-through hole in position, and other described cable-through hole is distributed in diverse location.

First see Fig. 2, the conductor (Copper Foil) on individual layer PCB substrate of the present invention is arranged according to mode shown in figure, and end points 1 and 2 is cable-through hole and pad, and the wire that connects driving power can weld at this.It should be noted that, wire conductor 20 of the present invention preferably adopts Copper Foil, and its helical form can be rectangular coil shape, round spiral or oval helical form etc.

Again referring to structure, the ground floor that is respectively double-layer PCB board shown in Fig. 3 A and Fig. 3 B and the second layer signal of the PCB coil of the double-layer PCB board shown in Fig. 3 A～Fig. 3 C.Cable-through hole 1 is with cable-through hole 2 in order to be connected driving power, and cable-through hole 12 represents that this position ground floor and the second layer are communicated with.In the time that the sense of current of driving power is from 1 to 2, the sense of current of this PCB coil the right all wires of vertical direction (Copper Foil) is for from top to bottom, and the sense of current of all wires of left side vertical direction (Copper Foil) is for from top to bottom; In the time that the sense of current of driving power is from 2 to 1, the above-mentioned sense of current is also contrary.

The multi-layer PCB schematic diagram that Fig. 4 A～Fig. 4 E is the embodiment of the present invention, wherein Fig. 4 A～Fig. 4 D is respectively the 1st, 2,3,4 layers of signal of four layers of pcb board.Cable-through hole 1 is with cable-through hole 4 in order to be connected driving power, and cable-through hole 12 represents that this position layers 1 and 2 is communicated with, and cable-through hole 23 represents that this position layers 2 and 3 is communicated with, and cable-through hole 34 represents the connection of the 3rd layer and the 4th layer of this position.In the time that the sense of current of driving power is from 1 to 4, the sense of current of this pcb board the right all wire conductors of vertical direction (Copper Foil) is for from top to bottom, and the sense of current of all wire conductors of left side vertical direction (Copper Foil) is for from top to bottom; In the time that the sense of current of driving power is from 4 to 1, the above-mentioned sense of current is also contrary.

Fig. 5 is the schematic diagram (overlooking) that the multi-layer PCB of this embodiment of the invention coordinates permanent magnet work.PCB coil device (specifically installs unrelated to the invention in permanent magnet top, do not illustrate at this), in the time that driving power is switched on to PCB (with reference to the description explanation to Fig. 4 A～Fig. 4 E), this PCB realizes reciprocating motion in its effective travel, and the direction of arrow that in figure, effective travel indicates is the direction of motion.

Be more preferably, then referring to Fig. 4 A～Fig. 4 E, the cable-through hole in the embodiment of the present invention adopts and runs through the cable-through hole of whole pcb board and be provided with pad.Four blocks of plates of Fig. 4 A～Fig. 4 D are called to plate 1, plate 2, plate 3 and plate 4 from left to right here.When user is welded to connect cable-through hole 34 and cable-through hole 4, plate 4 is carried out to short circuit, when whole pcb board energising, only have plate 1,2,3 excitations.Like this, user can be according to the needs of oneself, change the characteristic such as resistance, inductance and on-position of finished product PCB coil by simple operations, and then change the kinetic characteristic of coil and drive requirement.Equally, cable-through hole 23 and cable-through hole 4 can be welded to connect to (being equivalent to plate 3, plate 4 short circuits), or cable-through hole 12 and cable-through hole 4 are welded to connect to (being equivalent to plate 2, plate 3, plate 4 short circuits), need depending on user.

It is to be noted, in the time that user does not change the demand of coil characteristics, cable-through hole also can not adopt the cable-through hole that runs through monoblock pcb board, the available inside cable-through hole (solid) that is only communicated with two-ply, and cable-through hole does not need to be distributed in the diverse location of pcb board yet like this.

PCB coil of the present invention is the voice coil motor coil that uses multi-layer PCB processes to manufacture, and itself is exactly a PCB multi-layer sheet, but has realized the function of conventional coil, and therefore this paper, in description process, is referred to as " PCB coil ".Its advantage is:

The first, PCB manufacturing process maturation, is applicable to large-scale production, and coil dimension and the consistency of performance made by its technique are good, and make efficiency is high, and fraction defective is low, and cost of manufacture is low.

The second, can realize the coil of any shape, apply harsh occasion and can be easy to carry out the designing and making of voice coil motor in size and geometry.

The 3rd, the coil that PCB technique is manufactured, outward appearance is a pcb board, is easy to realize closure designs, reaches waterproof and dustproof, antifouling, anti-corrosion property, can be applied in environmental aspect very poor occasion and liquid environment.

The characteristics such as the 4th, user can pass through the connection (by the welding between the pad being communicated with cable-through hole) to cable-through hole on pcb board, the on-position, resistance, inductance of change coil, and then reach the object that changes voice coil motor kinetic characteristic.Such voice coil motor, has given user the very large application degree of freedom.

The present invention also provides a kind of voice coil motor that comprises PCB coil described above accordingly, and it has good consistency and reliability.

In sum, the present invention passes through at least two-layer the setting of PCB coil pcb board, on described every layer of pcb board, there is the wire conductor by spiral, and be arranged at cable-through hole and the pad at described wire conductor two ends, the two-layer described pcb board of adjacent connection has the identical described cable-through hole in position, and other described cable-through hole is distributed in diverse location.Whereby, PCB coil of the present invention is a multi-layer PCB board, due to PCB manufacturing process maturation, is applicable to large-scale production, and coil dimension and the consistency of performance made by its technique are good, and make efficiency is high, and fraction defective is low, and cost of manufacture is low.

Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. a PCB coil, be applied to voice coil motor, it is characterized in that, described PCB coil comprises at least two-layer pcb board, on described every layer of pcb board, there is the wire conductor by spiral, and be arranged at cable-through hole and the pad at described wire conductor two ends, and the two-layer described pcb board of adjacent connection has the identical described cable-through hole in position, and other described cable-through hole is distributed in diverse location.

2. PCB coil according to claim 1, is characterized in that, the helical form of described wire conductor is rectangular coil shape, round spiral or oval helical form.

3. PCB coil according to claim 1, is characterized in that, described wire conductor is communicated with by described cable-through hole at the two-layer pcb board being connected.

4. PCB coil according to claim 1, is characterized in that, described wire conductor is Copper Foil.

5. PCB coil according to claim 1, is characterized in that, described PCB coil comprises four layers of pcb board.

6. one kind comprises the voice coil motor of PCB coil as described in claim 1～5 any one.