CN217085385U - Lens driving mechanism and frame assembly thereof - Google Patents

Abstract

The utility model discloses a camera lens actuating mechanism and frame set spare thereof, this camera lens actuating mechanism include shell, base, frame set spare, carrier, go up the reed, lower reed and a plurality of lateral part reed, and base and shell cooperation form accommodation space, and the base is equipped with multiunit coil and a plurality of sensor, and the frame is equipped with the top of magnet and swing joint to base. The frame component is movably arranged in the outer frame and comprises a frame, a magnet group and a plurality of sensor magnets, and the sensor magnets are matched with the position of the frame detectable by a sensor of the base. The carrier is also provided with a coil and can be movably arranged in the frame, and the carrier is used for mounting the lens. The upper spring leaf and the lower spring leaf are both elastic and can elastically connect the frame and the carrier. The plurality of side springs also have elasticity, and a part of the plurality of side springs is connected to the outer frame and the frame and elastically connects the outer frame and the frame, and another part of the plurality of side springs is connected to the outer frame and the base and elastically connects the outer frame and the base.

Description

Lens driving mechanism and frame assembly thereof

Technical Field

The utility model relates to an optical drive field, concretely relates to camera lens actuating mechanism and frame set spare thereof.

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, a lens driving mechanism is generally used to drive a lens to move in three dimensions, namely, in a direction along an optical axis and two mutually perpendicular directions perpendicular to the optical axis, wherein the lens movement in the direction along the optical axis is mainly used for focusing, and the lens movement in the direction perpendicular to the optical axis is used for anti-shake. The existing lens driving mechanism comprises a shell, a base, an outer frame, a carrier, an upper reed, a lower reed and a plurality of side reeds, wherein the base is provided with a plurality of groups of coils and is matched with the shell to form a containing space, the outer frame is positioned in the containing space and is movably connected to the top of the base, the frame is movably installed in the outer frame, the frame and the outer frame are respectively provided with a magnet, the carrier is provided with a coil and is movably installed in the frame, the upper reed is connected to the top of the carrier and the frame, the lower reed is connected to the bottom of the carrier and the frame, the upper reed and the lower reed are respectively provided with elasticity and are mutually matched to enable the carrier and the frame to be elastically connected, one part of the side reeds is connected to the outer frame and the frame and enable the outer frame and the frame to be elastically connected, and the other part of the side reeds is connected to the outer frame and the base and enable the outer frame and the base to be elastically connected. The carrier is used for mounting the lens, the coils of the carrier and the magnets of the frame are matched to drive the carrier to move along the direction of the optical axis so as to adjust the focal length of the lens, and the multiple groups of coils of the base, the outer frame and the magnets of the frame are matched to drive the carrier to move along the direction vertical to the optical axis so as to prevent the lens from shaking.

With the development of the technology, higher requirements are put on the photographic quality, and the lens movement displacement needs to be accurately controlled so as to improve the photographic quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a camera lens actuating mechanism and frame subassembly thereof to solve the problem that exists among the above-mentioned prior art.

In order to solve the above problem, according to the utility model discloses an aspect provides a frame assembly, frame assembly is applied to camera lens actuating mechanism, camera lens actuating mechanism includes base, frame and carrier, be equipped with a plurality of sensors on the base, frame swing joint to the top of base, frame assembly swing mount in the frame, the frame is equipped with a plurality of holes of dodging, the carrier be used for installation camera lens and mobile install in the frame, include:

a frame comprising a plurality of end-to-end sidewalls;

a magnet pack mounted on the side wall;

the sensor magnets are arranged on the frame and respectively matched with the plurality of sensors on the base to sense the position of the frame.

In one embodiment, the number of the sensor magnets is two, the two sensor magnets are rectangular strips, one of the two sensor magnets extends along a first direction, the other sensor magnet extends along a second direction, and the first direction, the second direction and the optical axis direction of the lens are perpendicular to each other.

In one embodiment, the number of the sensor magnets is three, the three sensor magnets are rectangular bars, and the three sensor magnets extend in a first direction, a second direction and an optical axis direction of the lens respectively, wherein the first direction, the second direction and the optical axis direction of the lens are perpendicular to each other.

In one embodiment, the frame is a rectangular frame, the number of the sensor magnets is four, and the four sensor magnets are respectively located at four corners of the frame.

In one embodiment, a metal patch is also included;

the bottom of frame is equipped with the recess, the sensor magnetite is located in the recess, the metal paster is located the top of frame just corresponds the position of recess.

In one embodiment, four corners of the frame are provided with laterally extending portions, and the extending portions are used for respectively penetrating through the avoiding holes of the corresponding outer frame.

In one embodiment, the number of the magnet groups is two, and the two magnet groups are respectively mounted on the opposite side walls of the frame.

In one embodiment, the magnet group extends along the length direction of the corresponding side wall, the magnet group comprises two magnets, and the two magnets are arranged side by side along the direction perpendicular to the optical axis and the length direction of the corresponding side wall.

In one embodiment, a dimension of one of the magnets in a direction of an optical axis is larger than a dimension of the other of the magnets in the direction of the optical axis.

In one embodiment, the bottom of the frame is provided with a magnet groove, and the magnet group is positioned in the magnet groove.

The present invention also relates to a lens driving mechanism, comprising:

a housing, a bottom of the housing being open;

the base is connected to the bottom of the shell and matched with the shell to form an accommodating space, and a plurality of groups of coils and at least three sensors are arranged on the base;

the outer frame is positioned in the accommodating space and can be movably connected to the top of the base, and the outer frame is provided with a magnet;

the frame component can be movably arranged in the outer frame;

the carrier is also provided with a coil and can be movably arranged in the frame, and the carrier is used for mounting a lens;

an upper spring attached to the top of the frame and the carrier and a lower spring attached to the bottom of the frame and the carrier, the upper spring and the lower spring being operable to resiliently couple the frame and the carrier;

a plurality of side springs, some of said side springs being connected to and operable to resiliently connect said casing to said frame, and some of said side springs being connected to and operable to resiliently connect said casing to said base;

the coils of the carrier and the plurality of groups of coils of the base are matched with the magnet groups of the frame and the magnets of the outer frame to drive the carrier to move along the direction of the optical axis and the direction vertical to the optical axis; the sensor cooperates with the sensor magnet to sense the position of the frame.

The utility model discloses set up a plurality of sensor magnetites at the frame, a plurality of sensors of a plurality of sensor magnetites cooperation base can respond to the position of frame and carrier, and then can realize accurate control carrier motion and reset, improve photographic quality.

Drawings

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

Fig. 2 is a top view of a frame according to another embodiment of the present invention.

Fig. 3 is a bottom view of the frame of the embodiment of fig. 2.

Fig. 4 is a cross-sectional view of the frame of the embodiment of fig. 2.

Reference numerals: 100. a lens driving mechanism; 1. a housing; 2. a base; 21. a circuit board; 3. an outer frame; 31. avoiding holes; 4. a frame assembly; 41. a frame; 42. a magnet group; 421. a first magnet; 422. a second magnet; 43. a sensor magnet; 44. an extension portion; 5. a carrier; 6. a reed is arranged; 7. a lower reed; 8. a side spring leaf.

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 an embodiment can 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 a lens actuating mechanism 100, as shown in fig. 1, this lens actuating mechanism 100 includes shell 1, base 2, frame 3, frame subassembly 4, carrier 5, go up reed 6, lower reed 7 and a plurality of lateral part reed 8, wherein, the bottom opening of shell 1, base 2 is connected to the bottom opening department of shell 1 and forms accommodation space with shell 1 cooperation, and base 2's top still is equipped with circuit board 21, be equipped with multiunit coil (not shown in the figure) in the circuit board 21, in addition, still be equipped with a plurality of sensors (not shown in the figure) on the base 2, the quantity of sensor is at least two. The outer frame 3 is located in the accommodating space formed by the housing 1 and the base 2, the outer frame 3 can be movably connected to the top of the base 2, and in addition, a magnet (not shown) is arranged on the outer frame 3. The frame component 4 is movably installed in the outer frame 3, and the frame component 4 includes a frame 41, a magnet group 42 and a plurality of sensor magnets 43, the number of the sensor magnets 43 is preferably the same as that of the sensors of the base 2, and the sensor magnets 43 cooperate with the sensors of the base 2 to detect the position of the frame 41. The carrier 5 is also provided with a coil and is movably mounted in the frame 41, the carrier 5 being used for mounting a lens. The upper spring 6 is connected to the top of the frame 41 and the carrier 5, the lower spring 7 is connected to the bottom of the frame 41 and the carrier 5, and both the upper spring 6 and the lower spring 7 have elasticity and can elastically connect the frame 41 and the carrier 5. The plurality of side reeds 8 also have elasticity, and a part of the plurality of side reeds 8 is connected to the outer frame 3 and the frame 41 and elastically connects the outer frame 3 and the frame 41, and another part of the plurality of side reeds 8 is connected to the outer frame 3 and the base 2 and elastically connects the outer frame 3 and the base 2.

In practical application, after the coils of the carrier 5 and a plurality of sets of the coils of the base 2 are energized, the magnet sets 42 of the frame 41 and the magnets of the outer frame 3 can be matched to drive the carrier 5 to move along the direction of the optical axis and the direction perpendicular to the optical axis. Specifically, the magnet group 42 of the coil fitting frame 41 of the carrier 5 can drive the carrier 5 to move in the direction of the optical axis, and the upper spring 6 and the lower spring 7 can cooperate to reset the carrier 5 after moving. The coil of the base 2 cooperates with the magnet set 42 of the frame 41 and the magnet of the outer frame 3 to drive the outer frame 3 and the frame 41 to move along the direction perpendicular to the optical axis, and simultaneously drive the carrier 5 to move along the direction perpendicular to the optical axis, and the plurality of side reeds 8 cooperate to enable the outer frame 3 and the frame 41 to reset after moving.

The utility model discloses set up a plurality of sensor magnetite 43 at frame 41, a plurality of sensors of a plurality of sensor magnetite 43 cooperation base 2 can respond to frame 41 and carrier 5's position, and then can realize the motion of accurate control carrier 5 and reset, improve photographic quality.

Fig. 2 is a frame component 4 bottom view of an embodiment of the present invention, fig. 3 is a frame component 4 top view of an embodiment of the present invention, fig. 4 is a frame component 4 cross-sectional view of an embodiment of the present invention, as shown in fig. 2, fig. 3 and fig. 4, the frame 41 includes a plurality of end-to-end side walls, and the magnet group 42 is installed on the side walls, a plurality of sensor magnets 43 are installed on the frame 41, the sensor magnets 43 are used for respectively matching the positions of a plurality of sensor induction frames 41 on the base 2, thereby accurately controlling the positions of the carrier 5 and the frame 41, and improving the photographic quality.

In the first embodiment, the number of the sensor magnets 43 is two, and each of the two sensor magnets 43 is a rectangular bar, one of the two sensor magnets 43 extends in a first direction for fitting the position of the sensor sensing frame 41 of the base 2 in the first direction, and the other sensor magnet 43 extends in a second direction for fitting the position of the sensor sensing frame 42 of the base 2 in the second direction, the first direction, the second direction, and the optical axis direction of the lens being perpendicular to each other.

In the second embodiment, the number of the sensor magnets 43 is three, the three sensor magnets 43 are each a rectangular bar, and the three sensor magnets 43 extend in the first direction, the second direction, and the optical axis direction of the lens, respectively, wherein the first direction, the second direction, and the optical axis direction of the lens are perpendicular to each other. The three sensor magnets 43 may cooperate with the three sensors of the base 2 to sense the position of the frame 42 moving in the first direction, the second direction, and the optical axis direction of the lens.

In the third embodiment, as shown in fig. 2, the frame 42 is a rectangular frame, and the number of the sensor magnets 43 is four, and the four sensor magnets 43 are located at the four corners of the frame, respectively. It should be understood that three sensor magnets 43 among the four sensor magnets 43 extend in the first direction, the second direction, and the optical axis direction, respectively, and the manner in which the other sensor magnet 43 extends is not limited. If more sensor magnets 43 are needed, it is only necessary to ensure that the extending directions of three of the sensors 43 are arranged according to the second embodiment, and the extending directions of the rest of the sensor magnets 43 are not limited.

Note that, in the three embodiments described above, the N and S poles of the sensor magnet 43 are located at both ends in the extending direction of the sensor magnet 43, that is, at both ends in the longitudinal direction of the sensor magnet 43, respectively.

In the preferred embodiment of fig. 2 and 4, the bottom of the frame 41 is provided with a groove, and the sensor magnet 43 can be installed in the groove, and the groove is opened at the bottom of the frame 41 to make the sensor magnet 43 closer to the base 2 and the sensor of the base 2, thereby improving the induction strength between the sensor and the sensor magnet 43. In addition, the top of the frame is also provided with a metal patch, and the metal patch corresponds to the groove. In practice, the sensor magnet needs to be provided with a magnetic pole, the center of the magnetic pole is easy to deviate from the center of the sensor magnet in the process of arranging the magnetic pole by the sensor magnet, and the metal patch can regulate the magnetic field of the sensor magnet. It should be understood that the groove may be formed on the outer side or the top of the frame 41, and the specific position of the groove is not limited herein, and the cooperation between the sensor magnet 43 and the sensor is not affected.

Alternatively, as shown in fig. 2, the frame 41 is a rectangular frame, and the sensor magnets 43 are located at four corners of the frame 41. It should be understood that the sensor magnet 43 may be disposed at any position of the four side walls of the frame 41, for example, at the middle position of the four side walls, and is not limited to a specific position of the sensor magnet 43. The sensor magnet 43 is preferably provided so as to correspond to the sensor in the direction of the optical axis, and the distance between the sensor magnet 43 and the sensor is reduced to improve the sensor strength.

Optionally, four corners of the outer frame 3 are provided with avoiding holes 31, the avoiding holes 31 are located at the bottom of the outer frame 3, four corners of the frame 41 are provided with laterally extending extensions 44, the extensions 44 are used for respectively penetrating through the corresponding avoiding holes 31 of the outer frame 3, when the frame 41 moves in the outer frame 3, the extensions 44 can move in the avoiding holes 31, and the extensions 44 and the avoiding holes 31 cooperate to prevent the frame 41 from separating from the outer frame 3 during the movement.

Preferably, as shown in fig. 2 and 4, the magnet groups 42 extend along the length direction of the corresponding side wall, and the magnet groups 42 include two magnets arranged side by side in a direction perpendicular to the optical axis and the length direction of the corresponding side wall. Among the prior art, two magnetites on the frame 41 are arranged along the direction of optical axis, and the magnetite protrusion that is located the bottom in the bottom of frame 41 not only influences the motion of frame 41, can occupy extra space moreover, the utility model discloses a two magnetites all are on a parallel with corresponding lateral wall length direction, and the direction of perpendicular to optical axis is arranged, and two magnetites all set up in the lateral wall of frame 41, can improve frame 41's space utilization.

Further, the dimension of one of the magnets in the direction of the optical axis is larger than the dimension of the other magnet in the direction of the optical axis, and the magnet having the larger dimension in the direction of the optical axis is located at a position close to the inside of the frame 41. The magnets close to the inner wall of the frame 41 are defined as a first magnet 421, the magnets close to the outer side are defined as a second magnet 422, and in practical application, the magnetic fields at the bottoms of the two magnets and the magnetic field of the first magnet 421 need to be matched with the coil of the base 2 to drive the frame 41 to move along the direction perpendicular to the optical axis, and the magnetic field at the top of the second magnet 422 is in a state, so that the size of the top of the second magnet 422 can be reduced, the operation of the lens driving mechanism 100 is not affected, and the overall weight is reduced, so that the lens driving mechanism 100 is lighter.

Preferably, the bottom of the frame 41 is provided with a magnet slot, the magnet group 42 is located in the magnet slot, the magnet group 42 is located at the bottom of the frame 41 and is further close to the coil in the base 2, the magnetic field induction strength of the magnet group 42 and the coil is increased, and the moving force of the driving frame 41 or the outer frame 3 is improved.

The utility model discloses set up a plurality of sensor magnetite 43 at frame 41, a plurality of sensors of a plurality of sensor magnetite 43 cooperation base 2 can respond to frame 41 and carrier 5's position, and then can realize 5 movements of accurate control carrier and reset, improve photographic quality.

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 (11)

1. The utility model provides a frame assembly, frame assembly is applied to camera lens actuating mechanism, camera lens actuating mechanism includes base, frame and carrier, be equipped with a plurality of sensors on the base, frame swing joint to the top of base, frame assembly swing joint in the frame, the frame is equipped with a plurality of holes of dodging, the carrier be used for installation camera lens and mobile install in the frame, its characterized in that includes:

a frame comprising a plurality of end-to-end sidewalls;

a magnet pack mounted on the side wall;

the sensor magnets are arranged on the frame and respectively matched with the plurality of sensors on the base to sense the position of the frame.

2. The frame assembly according to claim 1, wherein the number of the sensor magnets is two, and both of the sensor magnets are rectangular bars, one of the two sensor magnets extends in a first direction, the other sensor magnet extends in a second direction, and the first direction, the second direction, and the optical axis direction of the lens are perpendicular to each other.

3. The frame assembly according to claim 1, wherein the number of the sensor magnets is three, the three sensor magnets are rectangular bars, and the three sensor magnets extend in a first direction, a second direction, and an optical axis direction of the lens, respectively, wherein the first direction, the second direction, and the optical axis direction of the lens are perpendicular to each other.

4. The frame assembly according to claim 1, wherein the frame is a rectangular frame, the number of the sensor magnets is four, and the four sensor magnets are located at four corners of the frame, respectively.

5. The frame assembly according to claim 1, further comprising a metal patch;

the bottom of frame is equipped with the recess, the sensor magnetite is located in the recess, the metal paster is located the top of frame just corresponds the position of recess.

6. The frame assembly according to claim 4, wherein the four corners of the frame are provided with laterally extending extensions, and the extensions are used for respectively penetrating the avoiding holes of the corresponding outer frame.

7. The frame assembly of claim 1, wherein the number of magnet groups is two, and the two magnet groups are respectively mounted on the opposite side walls of the frame.

8. The frame assembly of claim 1, wherein the magnet groups extend along a length of the corresponding side wall, the magnet groups including two magnets, and the two magnets being arranged side-by-side along a direction perpendicular to the optical axis and the length of the corresponding side wall.

9. The frame assembly according to claim 8, wherein one of the magnets has a dimension in a direction of the optical axis that is greater than a dimension of the other of the magnets in the direction of the optical axis.

10. The frame assembly of claim 8, wherein the bottom of the frame is provided with a magnet slot, the magnet pack being located within the magnet slot.

11. A lens driving mechanism, comprising:

a housing, a bottom of the housing being open;

the base is connected to the bottom of the shell and matched with the shell to form an accommodating space, and a plurality of groups of coils and at least three sensors are arranged on the base;

the outer frame is positioned in the accommodating space and can be movably connected to the top of the base, and the outer frame is provided with a magnet;

the frame assembly of any of claims 1-10, movably mounted within the external frame;

the carrier is also provided with a coil and can be movably arranged in the frame, and the carrier is used for mounting a lens;

an upper spring attached to the top of the frame and the carrier and a lower spring attached to the bottom of the frame and the carrier, the upper spring and the lower spring being operable to resiliently couple the frame and the carrier;

a plurality of side springs, some of said side springs being connected to and operable to resiliently connect said casing to said frame, and some of said side springs being connected to and operable to resiliently connect said casing to said base;

the coils of the carrier and the plurality of groups of coils of the base are matched with the magnet groups of the frame and the magnets of the outer frame to drive the carrier to move along the direction of the optical axis and the direction vertical to the optical axis; the sensor cooperates with the sensor magnet to sense the position of the frame.

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