CN208110141U - A kind of magnetic yoke shell and double lens driving device - Google Patents

Abstract

The utility model provides a kind of magnetic yoke shell and double lens driving device, is related to miniature line motor technical field.The magnetic yoke shell applies to double lens driving device, magnetic yoke shell includes magnet yoke ring and terminal mounting, magnet yoke ring includes roof, side wall and yoke plate, one end of side wall is connected to the edge of roof, the other end of side wall is detachably connected with terminal mounting, is opened up on roof there are two first through hole, a yoke plate is respectively arranged in the opposite both sides of each first through hole, yoke plate is connected on roof and extends to terminal mounting side, for magnetite to be arranged between yoke plate and side wall.The magnetic yoke shell is frame structure, and small volume can reduce required space, assembly precision is improved, also, magnetic field is formed by adjacent magnetite and yoke plate, it can reinforce internal magnetic field, improve the accuracy controlled lens carrier module position, be conducive to the pairing modulation of dual camera mould group.

Description

A kind of magnetic yoke shell and double lens driving device

Technical field

The utility model relates to miniature line motor technical fields, in particular to a kind of magnetic yoke shell and double lens Driving device.

Background technique

The working principle of lens driver is by allowing coil to generate according to certain to the coil power supply in lens carrier The magnetic field of frequency transformation, the magnetic field of transformation and magnet are mutually exclusive or attract, and make the coil in lens carrier by the work of magnetic force With lens carrier is connect with spring, lens carrier adjustment space position under the action of the elastic force of spring and magnetic force, realizes focusing Purpose.

But lens driver its require the displacement accuracy of focusing be carried out with micron order unit it is nominal, so, it is each The drive characteristic of a lens driver is largely influenced by element size precision and assembly precision, a pair of Simple lens combination of drive means uses, and is extremely difficult to requirement in displacement consistency.Also, it is also deposited in dual camera mould group In weaker, low to the position control accuracy of the lens defect of electromagnetism.

Utility model content

The purpose of this utility model is to provide a kind of magnetic yoke shell and double lens driving device, it is intended to improve double camera shootings The technical problem that head mould group assembly precision is low, internal magnetic field is weaker.

The first technical solution provided by the utility model：A kind of magnetic yoke shell applies to double lens driving device, described Magnetic yoke shell includes magnet yoke ring and terminal mounting, and the magnet yoke ring includes roof, side wall and yoke plate, and one end of the side wall connects It connects at the edge of the roof, the other end of the side wall is detachably connected with the terminal mounting, offers on the roof The yoke plate is respectively arranged in two first through hole, the opposite both sides of each first through hole, and the yoke plate is connected to Extend on the roof and to terminal mounting side, the spaced and parallel setting of long side of the yoke plate and the side wall.

Further, the yoke plate is rectangular plate-like, and the long side of the yoke plate is connected on the roof, the magnetic The length of the short side of yoke plate is less than the height of the side wall.

Further, the roof, the side wall and the yoke plate are integrally formed.

Further, multiple first protrusions are provided on the inner surface of the roof, multiple first protrusions are located at institute The periphery of first through hole is stated, first protrusion is used to support lens driving assembly.

Further, there are four first protrusions for the setting evenly and at intervals of the periphery of each first through hole.

Further, four Angle Positions of the roof are each provided with first protrusion, the long side of the roof Middle part be each provided with one it is described first protrusion.

Further, the position that each first protrusion is corresponded on the outer surface of the roof is groove.

Further, the terminal mounting includes bottom wall, pad and electrical terminals, the profile of the bottom wall and the side wall Shape match, the bottom wall is opened up there are two the second through-hole, two second through-holes and two first through hole one One is corresponding, and the periphery setting of each second through-hole is connected with described in one there are two the pad on each pad Electrical terminals.

Further, the terminal mounting further includes multiple hooks, and one end of the hook is connected to the outer of the bottom wall Surface, the other end of the hook is for being connected to the side wall.

Further, the marginal position on the inner surface of the bottom wall is provided with multiple second protrusions, second protrusion It is used to support lens driving assembly, the pad is arranged in second protrusion.

Second of technical solution provided by the utility model：A kind of double lens driving device includes that the first technical solution mentions The magnetic yoke shell of confession and the lens driving assembly for being contained in the magnetic yoke enclosure interior.

Further, the lens driving assembly includes the first spring leaf, lens carrier, second spring piece, coil and magnetic Stone, first spring leaf are arranged between the roof and two lens carriers, each lens carrier with it is described One second spring piece, one coil of periphery setting of each lens carrier, institute are set between terminal mounting It states and the magnetite is respectively set between the long side of side wall and the yoke plate.

Further, multiple first protrusions are provided on the inner surface of the roof, multiple first protrusions are located at institute The periphery of first through hole is stated, first spring leaf is connected between first protrusion and two lens carriers.

Further, the terminal mounting includes multiple second protrusions, and it is convex that the second spring piece is connected to described second It rises between the lens carrier.

The beneficial effect of magnetic yoke shell provided by the utility model is：Magnet yoke ring and terminal mounting form integrated frame knot The inside of magnetic yoke shell is arranged in structure, lens driving assembly, can be improved the assembly precision of double lens driving device, improves focusing Accuracy, greatly ensure that the consistency of two groups of lens carrier component placement properties, be conducive to matching for dual camera mould group To modulation.Magnetite is mounted between side wall and yoke plate, is formed magnetic field by yoke plate and magnetite, can be reinforced internal magnetic , further increase the precision to lens driving assembly position control.

The beneficial effect of double lens driving device provided by the utility model is：Improve the assembly of double lens driving device Precision improves the accuracy of focusing.Magnetic field is formed by yoke plate and magnetite, internal magnetic field can be reinforced, further increased To the precision of lens driving assembly position control.To greatly ensure that the one of two groups of lens carrier component placement properties Cause property is conducive to the pairing modulation of dual camera mould group.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the overall structure diagram of double lens driving device provided by the embodiment of the utility model.

Fig. 2 is the decomposition texture schematic diagram of double lens driving device provided by the embodiment of the utility model.

Fig. 3 is the structural schematic diagram at the first visual angle of magnet yoke ring in Fig. 2.

Fig. 4 is the structural schematic diagram at second of visual angle of magnet yoke ring in Fig. 2.

Fig. 5 is the decomposition texture schematic diagram of magnetic yoke shell in Fig. 2.

Icon：100- double lens driving device；10- lens driving assembly；The first spring leaf of 11-；12- lens carrier；13- Coil；14- magnetite；15- second spring piece；20- magnetic yoke shell；21- magnet yoke ring；211- roof；2111- first through hole； The first protrusion of 2112-；2113- groove；212- side wall；213- yoke plate；22- terminal mounting；221- bottom wall；2211- second is logical Hole；The second protrusion of 2212-；222- pad；223- electrical terminals；224- hook.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be understood that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or The utility model product using when the orientation or positional relationship usually put or those skilled in the art usually understand Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified sets Standby or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.

In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply Relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

Referring to Fig. 1, present embodiments providing a kind of double lens driving device 100, the application of double lens driving device 100 is simultaneously It is not limited to the high pixel minitype digital camera with automatic focusing function.Double lens driving device 100 includes magnetic yoke shell 20 And it is contained in the lens driving assembly 10 inside magnetic yoke shell 20.Magnetic yoke shell 20 be frame structure, be conducive to it is compact-sized, It can be improved assembly precision, greatly ensure that the consistency of two groups of lens carriers, 12 component placement property, be conducive to double camera shootings The pairing modulation of head mould group, improves the accuracy of focusing.

Referring to Fig. 2, magnetic yoke shell 20 includes magnet yoke ring 21 and terminal mounting 22.Lens driving assembly 10 includes the first bullet Reed 11, lens carrier 12, second spring piece 15, coil 13 and magnetite 14, the first spring leaf 11 are arranged in magnet yoke ring 21 and two Between a lens carrier 12, a second spring piece 15, each lens are set between each lens carrier 12 and terminal mounting 22 A coil 13 is arranged in the periphery of carrier 12, and a magnetite 14 is respectively arranged in the opposite sides inside magnet yoke ring 21.

Two lens carriers 12 are arranged side by side along the long side of magnet yoke ring 21.Two 15 spacer insulator of second spring piece settings. One second spring piece 15 is electrically connected with a coil 13.The quantity of magnetite 14 is two, and each magnetite 14 faces two simultaneously Lens carrier 12, and be spaced and be arranged with lens carrier 12.Two magnetites 14, which are parallel to each other, to be positioned apart from two lens carriers 12 outsides, the spaced and parallel setting of long side of magnetite 14 and magnet yoke ring 21.Magnetite 14 is strip, and the length of magnetite 14 is equal to two Lens carrier 12 side by side after length.Magnetite 14 is mounted between side wall 212 and yoke plate 213, by adjacent magnetite 14 with Yoke plate 213 forms magnetic field, enhances internal magnetic field intensity, improves the precision to 12 position control of lens carrier.It please join Fig. 3 and Fig. 4 are read, magnet yoke ring 21 includes roof 211, side wall 212 and yoke plate 213, roof 211, side wall 212 and yoke plate 213 It is integrally formed.Side wall 212 is rectangular ring, and one end of side wall 212 is connected to the edge of roof 211, the other end of side wall 212 with Terminal mounting 22 is detachably connected.

First through hole 2111 there are two opening up on roof 211, the opposite both sides of each first through hole 2111 are respectively arranged one Yoke plate 213, yoke plate 213 are connected on roof 211 and extend to 22 side of terminal mounting, yoke plate 213 and side wall 212 The spaced and parallel setting of long side.

Yoke plate 213 is rectangular plate-like, and the long side of yoke plate 213 is connected on roof 211, the short side of yoke plate 213 Length is less than the height of side wall 212.A magnetite 14 is respectively set between the long side and yoke plate 213 of side wall 212.

Each yoke plate 213 constitutes a magnetic field space with its similar magnetite 14, in this way, four yoke plates 213 and two magnetites 14 constitute four magnetic field spaces, the magnitude of field intensity of four magnetic field spaces is consistent, can make two groups of lens The placement property height of carrier 12 is consistent, is conducive to the modulation optimization of dual camera mould group.

Multiple first protrusions 2112 are provided on the inner surface of roof 211, the first protrusion 2112 is used to support lens driving Component 10, multiple first protrusions 2112 are located at the periphery of first through hole 2111, and the first spring leaf 11 is connected to the first protrusion 2112 Between two lens carriers 12.The position that each first protrusion 2112 is corresponded on the outer surface of roof 211 is groove 2113.

Specifically, there are four the first protrusions 2112 for the setting evenly and at intervals of the periphery of each first through hole 2111.Roof 211 Four Angle Positions be each provided with first protrusion 2112, be each provided in the middle part of the long side of roof 211 one first protrusion 2112.Lens carrier 12 is connected in the first protrusion 2112 by the first spring leaf 11, can make lens carrier 12 and roof 211 Between elastic connection it is more stable, meanwhile, provide biggish space for lens carrier 12.

Referring to Fig. 5, terminal mounting 22 includes bottom wall 221, pad 222, electrical terminals 223 and hook 224, bottom wall 221 It adopts and is made from an insulative material, the profile of bottom wall 221 is matched with the shape of side wall 212, and bottom wall 221 is opened up there are two the second through-hole 2211, two the second through-holes 2211 and two first through hole 2111 correspond, and the periphery of each second through-hole 2211 is provided with Two pads 222 are connected with an electrical terminals 223 on each pad 222.Electrical terminals 223 run through bottom wall 221, and the bottom of from The outer surface of wall 221 is stretched out, convenient for connecting with external power supply.

Marginal position on the inner surface of bottom wall 221 is provided with multiple second protrusions 2212, and the second protrusion 2212 is strip Shape.Pad 222 is arranged in the second protrusion 2212.Second protrusion 2212 is used to support lens driving assembly 10, specifically, the Two spring leafs 15 are connected between the second protrusion 2212 and lens carrier 12.One end of hook 224 is connected to the appearance of bottom wall 221 Face, the other end of hook 224 is for being connected to side wall 212.

Preferably, four electrical terminals 223 are arranged in the same long side of bottom wall 221.Each second spring piece 15 connects On two electrical terminals 223, to realize that two terminals of each coil 13 are electrically connected with an electrical terminals 223 respectively It connects.

Corresponding first through hole 2111, the second through-hole 2211 and lens carrier 12 are located on same optical axis line.It is another Group first through hole 2111 and the second through-hole 2211 are located on another optical axis.Two optical axis are parallel to each other.

The working principle of double lens driving device 100 provided in this embodiment：

Firstly, two magnetites 14 produce magnetic field, the coil 13 in two groups of lens carriers 12 passes through two power connection ends respectively Son 223 accesses external power supply, and coil 13 senses that electromagnetic force moves by coil 13 when electric current.Then, coil 13 drives The movement of mirror carrier 12, lens carrier 12 is under the resilient force of the first spring leaf 11 and second spring piece 15, lens carrier 12 The straight-line displacement of front and back occurs, lens are mounted in lens carrier 12, lens are moved forward and backward with lens carrier 12.In addition, passing through The displacement that each coil 13 accurately controls corresponding lens carrier 12 by the size of electric current is controlled, realizes precisely focusing Purpose.

The beneficial effect of double lens driving device 100 provided in this embodiment：

Firstly, double lens driving device 100 provided in this embodiment is not simply to close two single-lens driving devices And combine, but magnetic field is collectively formed using magnet yoke ring 21 and magnetite 14, the intensity of internal magnetic field is enhanced, is improved To the precision degree of 12 position control of lens carrier.Integrated frame structure is formed using magnet yoke ring 21 and terminal mounting 22, is improved The precision of assembly, greatly ensure that the consistency of two groups of 12 placement properties of lens carrier, is conducive to dual camera mould group Pairing modulation.

It is positioned apart from secondly, two magnetites 14 are parallel to each other in two groups of 12 outsides of lens carrier, not only there is no existing Dual camera mould group in electromagnetic interference defect between two single-lens driving devices, and can also will be in dual camera mould group Space length between two camera lenses reduces, to be easier to make the camera shooting performance of dual camera more superior.

Finally, 100 small volume of double lens driving device provided in this embodiment, can reduce required space.Magnet yoke ring 21, the parts machining that the first spring leaf 11, second spring piece 15, magnetite 14 and terminal mounting 22 pass through while making, and It is assembled simultaneously, the dimensional accuracy of components can be made to the maximum extent consistent, thus, guarantee that the placement property of two lens is protected Hold maximum consistency.Meanwhile components cost and assembling cost can be also reduced to the maximum extent, and improve production Efficiency.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of magnetic yoke shell, applies to double lens driving device, which is characterized in that the magnetic yoke shell includes magnet yoke ring (21) With terminal mounting (22), the magnet yoke ring (21) includes roof (211), side wall (212) and yoke plate (213), the side wall (212) one end is connected to the edge of the roof (211), the other end of the side wall (212) and the terminal mounting (22) It is detachably connected, is opened up on the roof (211) there are two first through hole (2111), the phase of each first through hole (2111) Both sides are respectively arranged with the yoke plate (213), the yoke plate (213) is connected on the roof (211) and to described Terminal mounting (22) side extends, for magnetite (14) to be arranged between the yoke plate (213) and the side wall (212).

2. magnetic yoke shell according to claim 1, which is characterized in that the yoke plate (213) is rectangular plate-like, the magnetic The long side of yoke plate (213) is connected on the roof (211), and the length of the short side of the yoke plate (213) is less than the side wall (212) height.

3. magnetic yoke shell according to claim 1, which is characterized in that be provided on the inner surface of the roof (211) more A first raised (2112), multiple described first raised (2112) are located at the periphery of the first through hole (2111), and described first Raised (2112) are used to support lens driving assembly (10).

4. magnetic yoke shell according to claim 3, which is characterized in that the periphery interval of each first through hole (2111) Equably there are four described first raised (2112) for setting.

5. magnetic yoke shell according to claim 3, which is characterized in that four Angle Positions of the roof (211) are respectively arranged There is one described first raised (2112), first protrusion is each provided in the middle part of the long side of the roof (211) (2112)。

6. magnetic yoke shell according to claim 1, which is characterized in that the terminal mounting (22) includes bottom wall (221), weldering The profile of disk (222) and electrical terminals (223), the bottom wall (221) is matched with the shape of the side wall (212), the bottom Wall (221) is opened up there are two the second through-hole (2211), two second through-holes (2211) and two first through hole (2111) it corresponds, there are two the pad (222), each welderings for the periphery setting of each second through-hole (2211) The electrical terminals (223) is connected on disk (222).

7. magnetic yoke shell according to claim 6, which is characterized in that the terminal mounting (22) further includes multiple hooks (224), one end of the hook (224) is connected to the outer surface of the bottom wall (221), and the other end of the hook (224) is used In being connected on the side wall (212).

8. magnetic yoke shell according to claim 6, which is characterized in that the margin location on the inner surface of the bottom wall (221) It installs and is equipped with multiple second raised (2212), described second raised (2212) are used to support lens driving assembly (10), the weldering Disk (222) is arranged on described second raised (2212).

9. a kind of double lens driving device, which is characterized in that the double lens driving device includes magnetic yoke described in claim 1 Shell and the lens driving assembly (10) for being contained in the magnetic yoke enclosure interior.

10. double lens driving device according to claim 9, which is characterized in that the lens driving assembly (10) includes First spring leaf (11), lens carrier (12), second spring piece (15), coil (13) and magnetite (14), first spring leaf (11) be arranged between the roof (211) and two lens carriers (12), each lens carrier (12) with it is described One second spring piece (15), the periphery setting one of each lens carrier (12) are set between terminal mounting (22) The magnetite (14) is respectively arranged in the coil (13) between the long side and the yoke plate (213) of the side wall (212).