CN217181304U - Frame and optical element driving mechanism - Google Patents

Abstract

The utility model discloses a frame and optical element actuating mechanism, wherein, this frame includes frame and magnet group, and the frame includes a plurality of lateral walls, and just end to end is arranged around the direction of optical axis to a plurality of lateral walls. The magnet group extends along the first direction and is installed on the lateral wall to the magnet group includes first magnetite and second magnetite, and first magnetite and second magnetite also all extend along the first direction and arrange the setting along the second direction, the direction mutually perpendicular of first direction, second direction and optical axis. Through arranging first magnetite and second magnetite along the direction of perpendicular to optical axis and setting up, can make first magnetite and second magnetite occupy more frame inner space, reduce the weight of frame and whole optical element actuating mechanism's volume for whole optical element actuating mechanism is lighter-weights more.

Description

Frame and optical element driving mechanism

Technical Field

The utility model relates to an optical drive field, concretely relates to frame and optical element actuating mechanism.

Background

With the development of technology, many electronic devices today have the function of taking pictures or recording videos. The use of these electronic devices is becoming more common and the design direction of these electronic devices is being developed to be more convenient and thinner to provide more choices for users.

In practice, in order to adapt to photographing of various scenes, the lens needs to be continuously focused, and an anti-shake lens for the lens needs to be prevented in the focusing or photographing process. In the prior art, an actinic element driving mechanism is generally used to drive a lens to move along three dimensions, namely, a direction along an optical axis and two mutually perpendicular directions perpendicular to the optical axis, wherein the lens movement along the optical axis is mainly used for focusing, and the lens movement along the direction perpendicular to the optical axis is used for anti-shake. In the prior art, the optical element driving mechanism comprises a housing, a frame, a carrier and a base, wherein the base and the housing are matched to form an accommodating space, the frame is movably arranged in the accommodating space, a magnet group is arranged on the frame, the two carriers are movably arranged on the frame, the carrier is used for installing the lens, in addition, coils are arranged on the carrier and the base, and the coils on the carrier and the base are matched with the magnet group to drive the carrier to move along the direction of the optical axis of the lens or the direction perpendicular to the optical axis of the lens. Because the magnet group of frame generally includes a plurality of magnetite, and a plurality of magnetite is arranged along the direction of optical axis and is set up to protrusion in the bottom or the top of frame, heavy and occupy more space, influence the flexibility and the holistic weight of optical element driven mechanism, in order to adapt to market demand, need develop more lightweight optical element actuating mechanism.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a frame and an optical element driving mechanism to solve the above-mentioned problems in the prior art.

In order to solve the above problem, according to an aspect of the present invention, there is provided a frame, the frame is applied to an optical element driving mechanism, the optical element driving mechanism includes a carrier, an inner frame, the carrier is used for mounting a lens, and is movably mounted in the inner frame, the inner frame is movably mounted in the frame, including:

the frame comprises a plurality of side walls, and the side walls are arranged around the direction of the optical axis and are connected end to end;

the utility model provides a magnet group, including lateral wall, first direction, first magnetite, first direction, second direction and the direction mutually perpendicular of optical axis, the magnet group extend and install in along first direction on the lateral wall, the magnet group includes first magnetite and second magnetite, first magnetite with the second magnetite is arranged along the second direction, first direction the second direction with the direction mutually perpendicular of optical axis.

In one embodiment, the number of the magnet sets is two, and the magnet sets are respectively installed on the two oppositely arranged side walls.

In one embodiment, the two said sets of magnets are congruent in shape.

In one embodiment, a dimension of the first magnet in a direction of the optical axis is larger than a dimension of the second magnet in the direction of the optical axis.

In one embodiment, the first magnet extends beyond the second magnet along the direction of the optical axis and towards the top of the frame, and the first magnet is located on one side close to the inside of the frame.

In one embodiment, the first magnet and the second magnet are flush at bottom portions in the direction of the optical axis.

In one embodiment, the first magnet and the second magnet are each rectangular strips.

In one embodiment, the frame is rectangular and comprises four side walls, wherein two oppositely arranged side walls are provided with grooves, and the grooves extend along the first direction;

the two magnet groups are respectively positioned in the grooves.

In one embodiment, the groove is recessed from a bottom surface of the sidewall toward the top.

The utility model discloses still relate to an optical element actuating mechanism, include:

a housing;

the base is matched with the shell to form an accommodating space, and a plurality of groups of coils are arranged on the base;

the frame can be movably arranged in the accommodating space;

the inner frame is movably arranged in the frame and is provided with a magnet;

the carrier is provided with a coil and can be movably arranged in the inner frame, the carrier is provided with another group of coils, and the carrier is used for mounting the lens;

an upper spring plate and a lower spring plate, the upper spring plate being connected to the top of the carrier and the inner frame, the lower spring plate being connected to the bottom of the carrier and the inner frame, the upper spring plate and the lower spring plate cooperating to operatively resiliently connect the carrier and the inner frame; and

a plurality of resilient members, wherein a portion of the resilient members are coupled to and operatively connect the inner frame to the frame, and another portion of the resilient members are coupled to and operatively connect the frame to the base;

the carrier and the coil of the base are matched with the magnet group of the frame and the magnet of the inner frame, so that the carrier can be driven to move along the direction of the optical axis and the direction vertical to the optical axis.

The utility model discloses a magnet group in the frame includes first magnetite and second magnetite, and first magnetite and second magnetite are arranged along the direction of perpendicular to optical axis, and two magnetites are arranged and protrusion in the bottom of frame along the direction of optical axis among the prior art, the utility model discloses a first magnetite and second magnetite are arranged along the direction of perpendicular to optical axis, occupy more frame inner space, reduce the weight of frame and whole optical element actuating mechanism's volume for whole optical element actuating mechanism is lighter-weighted more. Additionally, the utility model discloses a first magnetite is close to the inside of frame, and the size of first magnetite along the direction of optical axis is greater than the size of second magnetite along the direction of optical axis, because the magnetic field at second magnetite top need not use, the utility model discloses reduce the size of second magnetite along the direction of optical axis with the second magnetite, do not influence the use of second magnetite promptly, can also reduce the weight of second magnetite and frame for optical element actuating mechanism is lighter-weighted more.

Drawings

Fig. 1 is an exploded view of an optical element driving mechanism according to an embodiment of the present invention.

Fig. 2 is another exploded view of the optical element driving mechanism of the embodiment shown in fig. 1.

Fig. 3 is a perspective view of the frame in the embodiment of fig. 1.

Fig. 4 is a cross-sectional view of the frame in the embodiment of fig. 1.

The attached figures are marked with prices: 100. an optical element driving mechanism 1, a housing 2, a base; 21. a circuit board; 3. A frame; 31. a frame; 311. a groove; 32. a magnet group; 321. a first magnet; 322. a second magnet; 4. an inner frame; 5. a carrier; 51. a spring plate is arranged; 52. a lower reed; 6. an elastic member; x, a first direction; y, a second direction; z, direction of the optical axis.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

The utility model relates to an optical element actuating mechanism 100, as shown in fig. 1 and 2, this optical element actuating mechanism 100 includes casing 1, base 2, frame 3, inside casing 4, carrier 5, go up reed 51, lower reed 52 and a plurality of elastic component 6, wherein, casing 1 and base 2 cooperation form accommodation space, and be equipped with multiunit coil (not shown) on the base 2, and frame 3 installs in accommodation space and swing joint to base 2's top, be equipped with magnet group 32 on the frame 3, magnet group 32 includes first magnetite 321 and second magnetite 322, and first magnetite 321 and second magnetite 322 are arranged along the direction Z of perpendicular to camera lens optical axis. The inner frame 4 is movably mounted in the frame 3, and a magnet (not shown) is arranged on the inner frame 4, the carrier 5 is provided with a coil and movably mounted in the inner frame 4, and another set of coils is arranged on the carrier 5, the carrier 5 can be used for mounting a lens, wherein the coils of the carrier 5 and the base 2 cooperate with the magnet set 32 of the frame 3 and the magnet of the inner frame 4 to drive the carrier 5 to move along the direction Z of the optical axis and the direction Z perpendicular to the optical axis. The upper spring 51 is connected to the top of the carrier 5 and the inner frame 4, the lower spring 52 is connected to the bottom of the carrier 5 and the inner frame 4, the upper spring 51 and the lower spring 52 have elasticity and can elastically connect the carrier 5 and the inner frame 4, and the upper spring 51 and the lower spring 52 are matched to enable the carrier 5 to reset after the carrier 5 moves along the direction Z of the optical axis. In addition, the plurality of elastic members 6 have elasticity, and a part of the plurality of elastic members 6 is connected to the inner frame 4 and the frame 3 and elastically connects the inner frame 4 and the frame 3, and the part of the elastic members 6 can restore the inner frame 4 and the carrier 5 after the inner frame 4 and the carrier 5 move in a direction Z perpendicular to the optical axis with respect to the frame 3. Another part of the elastic element 6 is connected to the frame 3 and the base 2 and elastically connects the frame 3 and the base 2, and after the frame 3 drives the inner frame 4 and the carrier 5 to move along the direction Z perpendicular to the optical axis, the other part of the elastic element 6 can reset the frame 3 and the inner frame 4 and the carrier 5.

The utility model discloses a magnet group 32 in frame 3 includes first magnetite 321 and second magnetite 322, and first magnetite 321 and second magnetite 322 are arranged along the direction Z of perpendicular to optical axis, and two magnetites are arranged and are protruded in the bottom of frame 3 along the direction Z of optical axis among the prior art, the utility model discloses a first magnetite 321 and second magnetite 322 are arranged along the direction Z of perpendicular to optical axis, occupy more frame 3 inner space, reduce frame 3's weight and whole optical element actuating mechanism 100's volume for whole optical element actuating mechanism 100 is lighter-weighted more.

It should be noted that the top surface of the base 2 is further provided with a circuit board 21, and the plurality of coils of the base 2 are disposed in the circuit board 21. In addition, the elastic members 6 connecting the inner frame 4 and the frame 3 are located at opposite sides of the frame 3, and the elastic members 6 connecting the frame 3 and the base 2 are located at opposite sides of the frame 3.

Fig. 3 is a perspective view of the frame 3 in the embodiment shown in fig. 1, and fig. 4 is a sectional view of the frame 3 in the embodiment shown in fig. 1, and as shown in fig. 3 and 4, the frame 3 includes a rim 31 and the magnet group 32 described above, wherein the rim 31 includes a plurality of side walls, and the plurality of side walls are arranged around the direction Z of the optical axis and are connected end to end. The magnet group 32 extends along the first direction X and is mounted on the side wall of the side, and the first magnet 321 and the second magnet 322 of the magnet group 32 also extend along the first direction X and are arranged in a second direction Y, wherein the first direction X, the second direction Y and the direction Z of the optical axis are perpendicular to each other. Through arranging first magnetite 321 and second magnetite 322 along the direction Z of perpendicular to optical axis and setting up, can make first magnetite 321 and second magnetite 322 occupy more frame 3 inner space, reduce the weight of frame 3 and whole optical element actuating mechanism 100's volume for whole optical element actuating mechanism 100 is lighter-weight more.

In addition, as a preferable scheme, the number of the magnet groups 32 is two, and two magnet groups 32 are respectively installed on two oppositely arranged side walls, and the two magnet groups 32 cooperate with the coil of the base 2 to drive the frame 3 to move along the direction Z perpendicular to the optical axis. It should be understood that the number of the magnet groups 32 may be plural, and the plurality of magnet groups 32 may be arranged in the first direction X, so that the volume of the plurality of magnet groups 32 is controlled, the plurality of magnet groups 32 are prevented from occupying too much volume, and the weight of the entire optical element driving mechanism 100 is reduced in the case where the magnetic fluxes of the plurality of magnet groups 32 satisfy the requirement.

Alternatively, as shown in fig. 4, the two magnet groups 32 are identical in shape and are oppositely arranged, the magnetic fluxes of the two magnet groups 32 are also identical, and the two magnet groups 32 cooperate to stably drive the frame 3 to move in the direction Z perpendicular to the optical axis.

In the preferred embodiment shown in FIG. 4, the dimension of the first magnet 321 in the direction Z of the optical axis is larger than the dimension of the second magnet 322 in the direction Z of the optical axis, and the first magnet 321 is located on the side close to the inside of the rim 31. In practical applications, the magnetic field of the first magnet 321 near the inside and the magnetic fields of the bottom of the first magnet 321 and the bottom of the second magnet 322 need to be used, while the magnetic field of the top of the second magnet 322 does not need to be used, so the size of the second magnet 322 can be reduced, the occupied volume of the second magnet 322 and the weight of the whole optical element driving mechanism 100 can be reduced, and the optical element driving mechanism 100 can be more lightweight. In addition, the magnetic poles of the first magnet 321 and the second magnet 322 are arranged along the direction Z of the optical axis, and the magnetic poles of the first magnet 321 and the second magnet 322 are designed in an opposite manner, that is, the N pole and the S pole of the first magnet 321 are arranged along the direction Z of the optical axis, the N pole is at the bottom, the S pole is at the top, the N pole of the second magnet 322 is at the top, and the S pole is at the bottom.

Further, as shown in fig. 4, the first magnet 321 extends beyond the second magnet 322 along the direction Z of the optical axis and toward the top of the bezel 31, and the size of the first magnet 321 along the direction Z of the optical axis is larger than that of the second magnet 322, so that the top of the first magnet 321 is higher than that of the second magnet 322.

Alternatively, the first and second magnets 321, 322 are flush at the bottom in the direction Z of the optical axis. It should be understood that the bottom of the first magnet 321 and the bottom of the second magnet 322 may be substantially flush, and the first magnet 321 and the second magnet 322 slightly protrude from the bottom of the frame 3 and are closer to the base 2, so as to enhance the interaction between the magnets and the coil on the base 2, but the height of the first magnet 321 or the second magnet 322 protruding from the bottom of the frame 3 needs to be controlled to avoid affecting the movement of the frame 3.

Optionally, the first magnet 321 and the second magnet 322 are both rectangular bars and both extend along a first direction X, the first direction X is a length direction of the corresponding side wall, and the two rectangular bars are more convenient to mount and compact in structure.

Preferably, the frame 31 is rectangular and includes four side walls, two of the side walls disposed opposite to each other are provided with a groove 311, the groove 311 extends along the first direction X, and the two magnet groups 32 are respectively located in the groove 311. It should be understood that the frame 31 may be designed in other shapes, and is not limited to a rectangular shape. In addition, the magnet group 32 may be mounted on the frame 31 by other conventional methods in the prior art, and is not limited to the above-mentioned embodiment.

Preferably, the recess 311 is sunken from the bottom surface of lateral wall towards the top, and two magnet groups 32 all are located the position that frame 31 is close to the bottom, are close to the coil of base 2 more, and after the coil circular telegram of base 2, two magnet groups 32 can produce stronger interact with the magnetite of coil, improve the dynamics that drive frame 3 moved.

The utility model discloses a magnet group 32 in frame 3 includes first magnetite 321 and second magnetite 322, and first magnetite 321 and second magnetite 322 arrange along the direction Z of perpendicular to optical axis, occupy more frame 3 inner spaces, reduce frame 3's weight and whole optical element actuating mechanism 100's volume for whole optical element actuating mechanism 100 is lightweight more. Additionally, the utility model discloses a first magnetite 321 is close to the inside of frame 3, and the size of first magnetite 321 along the direction Z of optical axis is greater than the size of second magnetite 322 along the direction Z of optical axis, because the magnetic field at second magnetite 322 top need not use, the utility model discloses reduce the size of second magnetite 322 along the direction Z of optical axis with second magnetite 322, do not influence the use of second magnetite 322 promptly, can also reduce the weight of second magnetite 322 and frame 3 for optical element actuating mechanism 100 is lighter-weighted more.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. A frame for use in an optical element driving mechanism, the optical element driving mechanism including a carrier for mounting a lens and movably mounted in an inner frame, the inner frame movably mounted in the frame, the frame comprising:

the frame comprises a plurality of side walls, and the side walls are arranged around the direction of the optical axis and are connected end to end;

the utility model provides a magnet group, including lateral wall, first direction, first magnetite, first direction, second direction and the direction mutually perpendicular of optical axis, the magnet group extend and install in along first direction on the lateral wall, the magnet group includes first magnetite and second magnetite, first magnetite with the second magnetite is arranged along the second direction, first direction the second direction with the direction mutually perpendicular of optical axis.

2. The frame of claim 1, wherein the magnet sets are two and are respectively mounted on the two oppositely disposed sidewalls.

3. The frame of claim 2, wherein the two sets of magnets are identical in shape.

4. The frame according to claim 1, wherein a dimension of the first magnet in a direction of the optical axis is larger than a dimension of the second magnet in the direction of the optical axis.

5. The frame of claim 4, wherein the first magnet extends beyond the second magnet in the direction of the optical axis and toward the top of the bezel, and the first magnet is located on a side near an interior of the bezel.

6. The frame according to claim 5, wherein bottom portions of the first and second magnets in the direction of the optical axis are flush.

7. The frame of claim 1, wherein the first magnets and the second magnets are each rectangular strips.

8. The frame of claim 4, wherein the bezel is rectangular and includes four side walls, two of the oppositely disposed side walls having a groove extending along the first direction;

the two magnet groups are respectively positioned in the grooves.

9. The frame of claim 8, wherein the groove is recessed from a bottom surface of the sidewall toward a top.

10. An optical element driving mechanism, comprising:

a housing;

the base is matched with the shell to form an accommodating space, and a plurality of groups of coils are arranged on the base;

the frame of any one of claims 1-9, movably mounted within said receiving space;

the inner frame is movably arranged in the frame and is provided with a magnet;

the carrier is provided with a coil and can be movably arranged in the inner frame, the carrier is provided with another group of coils, and the carrier is used for mounting the lens;

an upper spring plate and a lower spring plate, the upper spring plate being connected to the top of the carrier and the inner frame, the lower spring plate being connected to the bottom of the carrier and the inner frame, the upper spring plate and the lower spring plate cooperating to operatively resiliently connect the carrier and the inner frame; and

a plurality of resilient members, wherein a portion of the resilient members are coupled to and operatively connect the inner frame to the frame, and another portion of the resilient members are coupled to and operatively connect the frame to the base;

the carrier and the coil of the base are matched with the magnet group of the frame and the magnet of the inner frame, so that the carrier can be driven to move along the direction of the optical axis and the direction vertical to the optical axis.

Images