CN217181303U - Base and optical element driving mechanism - Google Patents

Abstract

The utility model discloses an optical element actuating mechanism, this optical element actuating mechanism include base, casing, first frame, second frame, carrier, go up the reed, lower reed, first elastic component and second elastic component, and base and casing cooperation form accommodation space, are equipped with first group magnetite on the first frame and install in accommodation space, and the carrier is mobile to be installed in first frame, still is equipped with first group coil on the carrier. The second frame is arranged in the accommodating space and movably connected to the top of the base, the second frame is movably arranged outside the first frame, and a second group of magnets are arranged in the second frame. The upper spring and the lower spring can elastically connect the carrier and the first frame. The first elastic member is connected to the first frame and the second frame. The second elastic piece is connected to the second frame and the base, and the second group of coils is matched with the first group of magnets and the second group of magnets to drive the carrier to move along the direction vertical to the optical axis so as to prevent the camera lens from shaking and influence the photographing quality.

Description

Base and optical element driving mechanism

Technical Field

The utility model relates to an optical drive field, concretely relates to base 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 of these electronic devices is being developed to be more convenient and thinner, so as 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 the lens needs to be prevented from shaking during focusing or photographing. In the prior art, the lens is driven by the optical element driving mechanism to move in three dimensions, i.e. in the optical axis direction and two mutually perpendicular directions perpendicular to the optical axis, wherein the lens is moved in the optical axis direction mainly for focusing and the lens is moved in the perpendicular optical axis direction for anti-shake. The existing optical element driving mechanism comprises a shell, a base, a first frame, a second frame, a carrier, an upper reed, a lower reed, a first elastic piece and a second elastic piece, wherein the shell and the base are matched to form a containing space, a plurality of groups of coils are arranged on the base, the second frame is movably connected to the top of the base and is positioned in the containing frame, the first frame is movably arranged in the second frame, the carrier is provided with the coils and is movably arranged in the first frame, the upper reed is connected to the tops of the carrier and the first frame, the lower reed is connected to the bottoms of the carrier and the first frame, the carrier and the first frame are elastically connected through the matching of the upper reed and the lower reed, and the carrier can reset after moving. The first elastic piece is connected to the first frame and the second frame and elastically connects the first frame and the second frame, the second elastic piece elastically connects the second frame and the base, magnets are arranged on the first frame and the second frame, and the magnets of the first frame and the second frame are matched with the carrier and the plurality of groups of coils on the base to drive the carrier to move along the optical axis direction and the direction perpendicular to the optical axis.

The top of base is equipped with the circuit board, and the coil of base generally is located the circuit board, and the inside of base is equipped with the metal strip moreover, and the metal strip can connect external power source to input the coil on the carrier and the coil of circuit board. In the prior art, the metal strip of the base is dislocated, which is inconvenient to connect to the coil in the circuit board, so that the coil in the circuit board and the metal strip on the base are stably and electrically connected, and a method for accurately positioning and installing the circuit board and the base is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a base and optical element drive actuating mechanism to solve the problem that exists among the above-mentioned prior art.

In order to solve the above problem, according to an aspect of the present invention, there is provided a base for an optical element driving mechanism, the optical element driving mechanism includes a first frame, a second frame, a carrier, a first elastic member, a second elastic member, an upper spring, and a lower spring, the first frame is provided with a first set of magnets, the carrier is movably installed in the first frame, the carrier is used for installing a lens and is provided with a first set of coils, the first set of coils cooperates with the first set of magnets to drive the carrier to move along an optical axis direction, the upper spring is connected to the carrier and the top of the first frame, the lower spring is connected to the first set of coils on the carrier and the bottom of the first frame, the first frame is movably installed in the second frame, the second set of magnets is provided in the second frame, the first elastic member is connected between the first frame and the second frame, the second elastic member is connected between the second frame and the base, and the base includes:

the base comprises a base body, wherein a groove is formed in the top of the base body, a positioning piece is arranged in the groove, and the positioning piece extends from the bottom of the groove to the top of the base body;

the circuit board is arranged in the groove, a positioning hole is formed in the circuit board, and the positioning piece is accommodated in the positioning hole.

In one embodiment, the positioning members and the positioning holes are all multiple, and the positioning members are arranged at intervals and are respectively installed in the positioning holes.

In one embodiment, the base is rectangular;

the number of the positioning parts is two, and the two positioning parts are symmetrically arranged relative to the center of the base.

In one embodiment, the height of the positioning element is not greater than the depth of the positioning hole.

In one embodiment, the thickness of the circuit board is greater than the depth of the recess.

In one embodiment, the circuit board has a profile that does not exceed a profile of the base body.

In one embodiment, the base body includes:

the plastic part is rectangular, a plurality of bulges are arranged on the top surface of the plastic part, and the bulges are respectively positioned at the corners of the plastic part;

the metal strip is embedded into the plastic part, one end of the metal strip is bent towards the bottom of the base body and extends out of the plastic part to be used for connecting an external power supply, and the other end of the metal strip extends into the protrusion partially and is exposed outside the protrusion to be used for electrically connecting the first group of coils on the carrier.

In one embodiment, the number of the protrusions is four, and the protrusions are respectively located at four corners of the plastic part;

the other ends of the two metal strips extend into the two adjacent bulges.

In one embodiment, the protrusion is a rectangular block, and the metal strip is exposed to the outside of the protrusion.

The present invention also relates to an optical element driving mechanism comprising:

in the base, a second group of coils is arranged in the circuit board and electrically connected with the metal strip;

the shell and the base are matched to form an accommodating space;

the first frame is positioned in the accommodating space, and a first group of magnets are arranged in the first frame;

the carrier is movably arranged in the first frame and used for mounting a lens, a first group of coils are arranged on the carrier and matched with the first group of magnets to drive the carrier to move along the direction of an optical axis;

the second frame is arranged in the accommodating space and movably connected to the top of the base, the second frame is movably arranged outside the first frame, and a second group of magnets are arranged in the second frame;

an upper spring plate and a lower spring plate, the upper spring plate being attached to the top of the carrier and the first frame, the lower spring plate being attached to the bottom of the carrier and the first frame, the upper spring plate and the lower spring plate being operable to resiliently connect the carrier and the first frame, the lower spring plate electrically connecting the first set of coils and the metal strip;

a first elastic member connected to and operable to elastically connect the first frame and the second frame;

a second elastic member connected to and operable to elastically connect the second frame and the base;

the second group of coils is matched with the first group of magnets and the second group of magnets to drive the carrier to move along the direction perpendicular to the optical axis.

The utility model discloses a be equipped with a plurality of setting elements on base body to set up the locating hole on the circuit board, can make things convenient for the accurate location of circuit board to be connected to base body through setting element and locating hole cooperation on. In addition, the top surface of the base body is provided with a plurality of bulges, and the metal strip in the base body can extend into the bulges and is connected to the first group of coils through the lower reeds so as to supply power for the first group of coils.

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 an assembly view of the base, the first frame, the second frame, the carrier, the first resilient member, the second resilient member, and the upper spring in the embodiment of fig. 1.

Fig. 4 is a top view of the base in the embodiment of fig. 1.

Fig. 5 is a perspective view of the base in the embodiment of fig. 1.

Fig. 6 is a top view of the metal strip in the base in the embodiment of fig. 1.

Fig. 7 is a side view of the metal strip in the base in the embodiment of fig. 1.

Reference numerals: 100. an optical element driving mechanism; 1. a base; 11. a base body; 111. a positioning member; 112. a plastic part; 113. a metal strip; 1131. an external power supply connection terminal; 1132. a first set of coil connection ends; 114. a protrusion; 12. a circuit board; 121. positioning holes; 2. a housing; 3. a first frame; 4. a second frame; 5. an upper reed, 6 and a lower reed; 7. a first elastic member; 8. a second elastic member; 9. and (3) a carrier.

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 an optical element actuating mechanism 100. As shown in fig. 1, 2 and 3, the optical element driving mechanism 100 includes a base 1, a housing 2, a first frame 3, a second frame 4, a carrier 9, an upper spring 5, a lower spring 6, a first elastic member 7 and a second elastic member 8. Wherein, the base 1 is provided with a metal strip 113 and a second set of coils (not shown), the base 1 and the housing 2 cooperate to form an accommodating space, the first frame 3 is located in the accommodating space, and the first frame 3 is provided with a first set of magnets (not shown). The carrier 9 is movably mounted in the first frame 3, the carrier 9 is used for mounting a lens, and the carrier 9 is further provided with a first set of coils (not shown in the figure), and the first set of coils can be matched with the first set of magnets after being electrified to drive the carrier 9 to move along the optical axis direction relative to the first frame 3 so as to adjust the focal length. The second frame 4 is installed in the accommodating space and movably connected to the top of the base 1, the second frame 4 is movably installed outside the first frame 3, and a second set of magnets (not shown) is arranged in the second frame 4. The upper spring 5 is connected to the top of the carrier 9 and the first frame 3, the lower spring 6 is connected to the bottom of the carrier 9 and the first frame 3, the upper spring 5 and the lower spring 6 have elasticity, the carrier 9 and the first frame 3 can be elastically connected, and after the carrier 9 moves along the optical axis direction, the upper spring 5 and the lower spring 6 can be matched to enable the carrier 9 to reset. In addition, lower spring 6 electrically connects the first set of coils to metal strip 113, metal strip 113 can also be connected to an external power source, and current can reach the first set of coils on carrier 9 through metal strip 113 and lower spring 6. The first elastic element 7 is connected between the first frame 3 and the second frame 4, the first elastic element 7 has elasticity and can elastically connect the first frame 3 and the second frame 4, and after the carrier 9 moves along the X axis, the first elastic element 7 can drive the first frame 3 and the carrier 9 to reset relative to the second frame 4. The second elastic member 8 is connected between the second frame 4 and the base 1, the second elastic member 8 has elasticity and can elastically connect the second frame 4 and the base 1, and after the carrier 9 moves along the Y-axis, the second elastic member 8 can drive the second frame 4, the first frame 3 and the carrier 9 to reset relative to the base 1. The second set of coils cooperates with the first and second sets of magnets (not shown) to drive the carrier 9 to move in a direction perpendicular to the optical axis, so as to prevent the lens from shaking and affecting the photographing quality. Wherein the X-axis and the Y-axis are perpendicular to each other and to the direction of the optical axis.

It should be noted that, a conductive member may be disposed on the second frame 4 and electrically connected to the metal strip 113 and the lower spring 6 in the base 1, and current may flow through the metal strip 113 in the base 1, the conductive member on the frame, the lower spring 6 to the first group of coils on the carrier 9 in sequence, so as to energize the first group of coils. In addition, the second elastic element 8 may also be made of a conductive material and electrically connect the metal strip 113 in the base 1 and the conductive element of the second frame 4, and an external current may sequentially flow through the metal strip 113 in the base 1, the second elastic element 8, the conductive element of the second frame 4, and the lower spring 6 to the first group of coils.

Fig. 4 and 5 are perspective views of the base 1 according to an embodiment of the present invention. As shown in fig. 4 and fig. 5, the base 1 includes a base body 11 and a circuit board 12, wherein a groove is disposed at the top of the base body 11, a positioning element 111 is disposed in the groove, the positioning element 111 extends from the bottom of the groove toward the top of the base body 11, the circuit board 12 is mounted in the groove, a positioning hole 121 is disposed on the circuit board 12, and the positioning hole 121 can accommodate the positioning element 111 on the base body 11. The positioning member 111 and the positioning hole 121 cooperate to accurately position and mount the circuit board 12 and the base body 11, and to improve the mounting speed of the circuit board 12 and the base body 11.

As a preferred embodiment of the present invention, as shown in fig. 4 and 5, the positioning members 111 and the positioning holes 121 are provided in a plurality, and the positioning members 111 are arranged at intervals and installed in the positioning holes 121 respectively, and the positioning members 111 and the positioning holes 121 cooperate to enable the circuit board 12 to be accurately positioned and installed on the base body 11. In addition, it should be noted that in the embodiment of fig. 4 and 5, the positioning hole 121 is a circular hole, and it should be noted that in other embodiments, the positioning hole 121 may also be other shapes, such as a rectangular hole or other irregular shapes, as long as the connecting positioning member 111 can be positioned.

Optionally, the base 1 is rectangular, the two positioning members 111 are provided, and the two positioning members 111 are symmetrically arranged with respect to the center of the base 1, so that the circuit board 12 can be positioned and connected to the top surface of the base body 11.

Preferably, as shown in fig. 4 and 5, the height of the positioning member 111 is not greater than the depth of the positioning hole 121, so as to prevent the positioning member 111 from protruding from the top surface of the circuit board 12, and prevent the positioning member 111 from interfering with the movement of the first frame 3, the second frame 4 or the carrier 9 in the optical element driving mechanism 100.

Alternatively, the thickness of the circuit board 12 is larger than the depth of the groove, and as shown in fig. 4 and 5, the circuit board 12 slightly protrudes from the top surface of the base body 11. It should be understood that the thickness of the circuit board 12 may also be equal to the depth of the recess.

Alternatively, the contour of the circuit board 12 does not exceed the contour of the base body 11, i.e., the contour of the circuit board 12 may be identical to the contour of the base body 11, or may be slightly smaller than the contour of the base body 11 as shown in fig. 4 and 5. A second set of coils is also disposed within the circuit board 12. as will be described in greater detail below, the contour of the circuit board 12 may affect the size of the second set of coils and thus the magnetic flux generated by the second set of coils, and the contour of the circuit board 12 may be sufficient to match the size of the second set of coils within the circuit board 12, but is not limited to the overall shape and size of the circuit board 12.

Optionally, the base body 11 includes a plastic part 112, the plastic part 112 is rectangular, a plurality of protrusions 114 are disposed on a top surface of the plastic part 112, the plurality of protrusions 114 are respectively located at corners of the plastic part 112, and the plurality of protrusions 114 are used for connecting the second elastic part 8. In the embodiment of fig. 4 and 5, the number of projections 114 is not four. In addition, as shown in fig. 6 and 7, the plurality of metal strips 113 are embedded in the plastic part 112, one end of each of the plurality of metal strips 113 is bent toward the bottom of the base body 11 and extends out of the plastic part 112, one end of each of the plurality of metal strips 113 bent toward the bottom of the base body 11 is an external power connection end 1131, and the external power connection end 1131 is connectable to an external power supply. The other ends of the partial metal strips 113 in the plurality of metal strips 113 respectively extend into the partial protrusions 114 and are exposed outside the protrusions 114, the end of the partial metal strip 113 exposed outside the protrusions 114 is a first set of coil connection terminals 1132, and the first set of coil connection terminals 1132 is used for electrically connecting the first set of coils on the carrier 9. Specifically, part of metal strip 113 is exposed outside protrusion 114, second elastic element 8 can connect part of metal strip 113 with a conductive element on second frame 4, conductive element on second frame 4 can be connected to lower spring 6, lower spring 6 is electrically connected to a first set of coils on carrier 9, and current flows from part of metal strip 113, second elastic element 8, conductive element on second frame 4, lower spring 6 to the first set of coils in sequence, so as to supply power to the first set of coils.

In the preferred embodiment of fig. 4 and 5, the number of the plurality of protrusions 114 is four, and the protrusions are respectively located at four corners of the plastic part 112, wherein the other ends of two metal strips 113 extend into two adjacent protrusions 114, and the two metal strips 113 are respectively connected to two ends of the first set of coils to form a closed loop. Of course, four metal strips 113 may be provided to connect the first set of coils, respectively, and the embodiment in which the metal strips 113 supply power to the first set of coils is not limited.

Alternatively, the protrusion 114 is a rectangular parallelepiped block, the metal strip 113 is exposed to the outside of the protrusion 114, and the second elastic member 8 may be connected to the outside of the protrusion 114 and electrically connected to the metal strip 113.

The utility model discloses a be equipped with a plurality of setting elements 111 on base body 11 to set up locating hole 121 on circuit board 12, can make things convenient for circuit board 12 accurate location to be connected to base body 11 through setting element 111 and locating hole 121 cooperation. In addition, the top surface of the base body 11 is provided with a plurality of protrusions 114, and the metal strip 113 in the base body 11 can extend into the protrusions 114 and be connected to the first group of coils through the lower spring 6 to supply power to the first group of coils.

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 base is used for an optical element driving mechanism, the optical element driving mechanism comprises a first frame, a second frame, a carrier, a first elastic piece, a second elastic piece, an upper reed and a lower reed, a first group of magnets are arranged on the first frame, the carrier can be movably installed in the first frame, the carrier is used for installing a lens and is provided with a first group of coils, the first group of coils are matched with the first group of magnets to drive the carrier to move along the optical axis direction, the upper reed is connected to the carrier and the top of the first frame, the lower reed is connected to the first group of coils on the carrier and the bottom of the first frame, the first frame can be movably installed in the second frame, a second group of magnets are arranged in the second frame, and the first elastic piece is connected between the first frame and the second frame, the second elastic member is connected between the second frame and the base, and is characterized in that the base comprises:

the base comprises a base body, wherein a groove is formed in the top of the base body, a positioning piece is arranged in the groove, and the positioning piece extends from the bottom of the groove to the top of the base body;

the circuit board is arranged in the groove, a positioning hole is formed in the circuit board, and the positioning piece is accommodated in the positioning hole.

2. The base of claim 1, wherein the positioning members and the positioning holes are plural, and the positioning members are disposed at intervals and respectively installed in the positioning holes.

3. The base of claim 2, wherein the base is rectangular;

the number of the positioning parts is two, and the two positioning parts are symmetrically arranged relative to the center of the base.

4. The base of claim 1, wherein the height of the positioning element is not greater than the depth of the positioning hole.

5. The base of claim 1, wherein the thickness of the circuit board is greater than the depth of the recess.

6. The base of claim 1, wherein the circuit board has a profile that does not exceed a profile of the base body.

7. The base of claim 1, wherein the base body comprises:

the plastic part is rectangular, a plurality of bulges are arranged on the top surface of the plastic part, and the bulges are respectively positioned at the corners of the plastic part;

the metal strip is embedded into the plastic part, one end of the metal strip bends towards the bottom of the base body and extends out of the plastic part to be connected with an external power supply, and the other end of the metal strip extends into the protrusion and is exposed outside the protrusion to be electrically connected with the first group of coils on the carrier.

8. The base of claim 7, wherein the number of the protrusions is four, and the protrusions are respectively located at four corners of the plastic part;

the other ends of the two metal strips extend into the two adjacent bulges.

9. The base of claim 8, wherein the protrusion is a rectangular block and the metal strip is exposed on an outer side of the protrusion.

10. An optical element driving mechanism, comprising:

the base of claim 7, a second set of coils disposed within said circuit board, said second set of coils electrically connected to said metal strip;

the shell and the base are matched to form an accommodating space;

the first frame is positioned in the accommodating space, and a first group of magnets are arranged in the first frame;

the carrier is movably arranged in the first frame and used for mounting a lens, a first group of coils are arranged on the carrier and matched with the first group of magnets to drive the carrier to move along the direction of an optical axis;

the second frame is arranged in the accommodating space and movably connected to the top of the base, the second frame is movably arranged outside the first frame, and a second group of magnets are arranged in the second frame;

an upper spring plate and a lower spring plate, the upper spring plate being attached to the top of the carrier and the first frame, the lower spring plate being attached to the bottom of the carrier and the first frame, the upper spring plate and the lower spring plate being operable to resiliently connect the carrier and the first frame, the lower spring plate electrically connecting the first set of coils and the metal strip;

a first elastic member connected to and operable to elastically connect the first frame and the second frame;

a second elastic member connected to and operable to elastically connect the second frame and the base;

the second group of coils is matched with the first group of magnets and the second group of magnets to drive the carrier to move along the direction perpendicular to the optical axis.

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