CN201732198U

CN201732198U - Lens driving device

Info

Publication number: CN201732198U
Application number: CN201020203055XU
Authority: CN
Inventors: 董乐平; 范婧
Original assignee: Ruisheng Acoustic Technology Changzhou Co ltd; AAC Acoustic Technologies Shenzhen Co Ltd
Current assignee: AAC Technologies Holdings Changzhou Co Ltd; AAC Technologies Pte Ltd
Priority date: 2010-05-25
Filing date: 2010-05-25
Publication date: 2011-02-02
Anticipated expiration: 2020-05-25

Abstract

The utility model provides a lens driving device comprising a conducting coil and a flexible circuit board. The conducting coil comprises conducting lead wires. The flexible circuit board comprises a soldering terminal. One end of the flexible circuit board is electrically connected with the conducting lead wires, and the other end is electrically connected with the soldering terminal. The soldering terminal is electrically connected with an outside power source. The utility model has the advantages of simple structure and better reliability.

Description

Lens driving apparatus

Technical field

The utility model relates to a kind of lens driving apparatus.

Background technology

Digital equipment has been widely used in people's the life, and wherein digital camera and Digital Video especially are that people institute often uses.In digital camera and slr camera, its camera lens has multiple type of drive, for example ultrasonic motor driving, Electromagnetic Drive etc., and it helps people comparatively to be convenient to use this type of digital equipment.

A kind of existing lens driving apparatus that utilizes Electromagnetic Drive, the conductive lead wire of its coil is connected to external power source with after the latch plate pin is connected, and the problem that this connected mode is brought is to carry out the insulation of latch plate and interior other element of lens driving apparatus.The lens driving apparatus of another kind of prior art, wherein a latch plate is divided into two parts, and the conductive lead wire of coil is connected with external power source through this two latch plate respectively, but this structure relative complex, and cost is increased.

The utility model content

Have baroque problem at lens driving apparatus in the prior art, the utility model provides a kind of simple in structure, reliability lens driving apparatus preferably.

A kind of lens driving apparatus comprises conductive coil and FPC, and this conductive coil comprises conductive lead wire.This FPC comprises a weld tabs, and an end of this FPC and this conductive lead wire electrically connect, and the other end and this weld tabs electrically connect, and this weld tabs and external power source electrically connect.

Preferably, this conductive coil comprises two conductive lead wires, and this lens driving apparatus comprises two FPCs, and each FPC electrically connects with this weld tabs respectively, and this two conductive lead wire electrically connects this two FPC respectively.

Preferably, this lens driving apparatus further comprises the magnetic bowl, and this magnetic bowl comprises outer wall and inwall, comprises receiving space between this outer wall and this inwall.

Preferably, this lens driving apparatus further comprises permanent magnet, and this permanent magnet is arranged on this periphery of inner wall.

Preferably, this conductive coil is around this permanent magnet, and and this permanent magnet between be provided with the gap.

Preferably, this permanent magnet comprises four identical permanent magnets.

Preferably, this lens driving apparatus further comprises packing ring, and this packing ring comprises accepting groove, and this FPC is housed in respectively in this accepting groove.

Preferably, this accepting groove is an arc, and the shape of this FPC is corresponding to this accepting groove.

That lens driving apparatus of the present utility model has is simple in structure, reliability advantage preferably.

Description of drawings

Fig. 1 is the three-dimensional package assembly synoptic diagram of the utility model lens driving apparatus one better embodiment.

Fig. 2 is the decomposition texture synoptic diagram of lens driving apparatus shown in Figure 1.

Fig. 3 is the decomposition texture synoptic diagram of lens driving apparatus shown in Figure 1 from other direction.

Fig. 4 is the structural representation after upper gasket shown in Figure 2, lower gasket and the FPC assembling.

Fig. 5 is the structural representation of package assembly shown in Figure 4 from other direction.

Embodiment

Below in conjunction with accompanying drawing lens driving apparatus of the present utility model is described.

See also Fig. 1 to Fig. 3, wherein, Fig. 1 is the three-dimensional package assembly synoptic diagram of the utility model lens driving apparatus one better embodiment, and Fig. 2 is the decomposition texture synoptic diagram of lens driving apparatus shown in Figure 1, and Fig. 3 is the decomposition texture synoptic diagram of lens driving apparatus shown in Figure 1 from other direction.

This lens driving apparatus 1 comprises loam cake 10, goes up elastic component 11, magnetic bowl 12, permanent magnet 13, support member 14, coil 15, down elastic component 16, upper gasket 17, FPC (flexible printed circuit, FPC) 18, lower gasket 19 and base 20.

This loam cake 10 and this base 20 formation receiving space that intercouples should be gone up elastic component 11, this magnetic bowl 12, this permanent magnet 13, this support member 14, this coil 15, this time elastic component 16, this upper gasket 17, this FPC 18 and this lower gasket 19 and be housed in this receiving space.

This magnetic bowl 12 comprises outer wall 122, inwall 124 and upper base 126.This outer wall 122 and this upper base 126 surround a receiving space, form an opening in the middle of this upper base 126, and this inwall 124 extends to these base 20 directions from this edge of opening.

This permanent magnet 13 can be got by the higher metallic of multiple hardness, as iron, aluminium, nickel and cobalt etc., and perhaps copper, niobium and tantalum etc., according to the difference of composition, its magnetic property is also to should be differentiated.In this lens driving apparatus 1 of present embodiment, this permanent magnet 13 comprises four permanent magnets that size is identical, and it is provided with around inwall 124 of this magnetic bowl 12 respectively, and keeps certain distances with the outer wall 122 of this magnetic bowl 12.According to the product design needs, this permanent magnet 13 also can be designed as a complete annular magnetic patch.

This coil 15 is arranged between the outer wall 122 and this permanent magnet 13 of this magnetic bowl 12, and does not contact with this permanent magnet 13.That is, this coil 15 is arranged in this magnetic bowl 12, also and between it is provided with the gap around this permanent magnet 13.This coil 15 is a lattice coil 15, and for example, three to four layer line circles 15 according to the product design needs, also can correspondingly reduce or increase the number of plies.There is insulation course to isolate between 15 layers of the adjacent windings of this coil 15, to prevent short circuit.This coil 15 comprises two conductive lead wires (figure does not show).Under the energising situation, this coil 15 rises under the magnetic field interaction that himself produces electric field and 13 generations of this permanent magnet, thereby drives camera lens (figure does not show).

This support member 14 passes the opening of the bottom of this magnetic bowl 12, and the top of this support member 14 is with should to go up elastic component 11 sheathed, and its bottom is sheathed with this time elastic component 16.

Opening is established at these upper gasket 17 its middle parts, and the relative both sides of this intermediate openings are respectively equipped with two first deep-slotted chip breakers 170.

The shape of the shape of this lower gasket 19 and this upper gasket 17 is similar, establish two second deep-slotted chip breakers 190 of opening and the relative both sides of being located at this intermediate openings in its middle part equally, and this second deep-slotted chip breaker 190 corresponds respectively to this first deep-slotted chip breaker 170.This lower gasket 19 further comprises two flexure strips (not indicating), and its edge, the same side from this lower gasket 19 extends to these base 20 directions, and the draw-in groove (not indicating) with these base 20 edges is corresponding respectively.

Please further consult Fig. 4 and Fig. 5, the shape of this FPC 18 is corresponding to this first deep-slotted chip breaker 170, in the present embodiment, this lens driving apparatus 1 comprises two FPCs 18, and these two FPCs 18 are housed in respectively in this first deep-slotted chip breaker 170.One end of this FPC 18 and the conductive lead wire of this coil 15 electrically connect, and the other end is connected with a weld tabs 180, and this weld tabs 180 further is connected with external power source.

In this lens driving apparatus 1, the conductive lead wire of this coil 15 is connected with this FPC 18 earlier, is connected with external power source by this weld tabs 180 again.This connected mode is simple in structure, do not need by latch plate even cut apart latch plate, and its connective stability is better.

Only be preferred case study on implementation of the present utility model below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. lens driving apparatus, comprise conductive coil, this conductive coil comprises conductive lead wire, it is characterized in that: this lens driving apparatus further comprises FPC, this FPC comprises a weld tabs, one end of this FPC and this conductive lead wire electrically connect, and the other end and this weld tabs electrically connect, and this weld tabs and external power source electrically connect.

2. lens driving apparatus according to claim 1, it is characterized in that: this conductive coil comprises two conductive lead wires, this lens driving apparatus comprises two FPCs, and each FPC electrically connects with this weld tabs respectively, and this two conductive lead wire electrically connects this two FPC respectively.

3. lens driving apparatus according to claim 1 is characterized in that: this lens driving apparatus further comprises the magnetic bowl, and this magnetic bowl comprises outer wall and inwall, comprises receiving space between this outer wall and this inwall.

4. lens driving apparatus according to claim 3 is characterized in that: this lens driving apparatus further comprises permanent magnet, and this permanent magnet is arranged on this periphery of inner wall.

5. lens driving apparatus according to claim 4 is characterized in that: this conductive coil is around this permanent magnet, and and this permanent magnet between be provided with the gap.

6. lens driving apparatus according to claim 4 is characterized in that: this permanent magnet comprises four identical permanent magnets.

7. lens driving apparatus according to claim 1 is characterized in that: this lens driving apparatus further comprises packing ring, and this packing ring comprises accepting groove, and this FPC is housed in respectively in this accepting groove.

8. lens driving apparatus according to claim 7 is characterized in that: this accepting groove is an arc, and the shape of this FPC is corresponding to this accepting groove.