CN217181305U - Base assembly and lens driving device - Google Patents

Abstract

The utility model discloses a base subassembly and camera lens drive arrangement, this camera lens drive arrangement include base, casing, inside casing, frame, carrier, go up the reed, lower reed and a plurality of lateral part reed, and base and casing cooperation form accommodation space, are equipped with first group magnetite on the inside casing and install in accommodation space, and the carrier is mobile to be installed in the inside casing, still is equipped with first group coil on the carrier. The outer frame is arranged in the accommodating space and movably connected to the top of the base, the outer frame is movably arranged outside the inner frame, and a second group of magnets are arranged in the outer frame. The upper spring leaf and the lower spring leaf can elastically connect the carrier and the inner frame. Part of the side spring leaves are arranged on the inner frame and the outer frame. The other part of the spring pieces at the side part are connected with the outer frame and the base, and the second group of coils are 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 assembly and lens driving device

Technical Field

The utility model relates to an optical drive field, concretely relates to base subassembly and camera lens drive arrangement.

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, a lens driving device drives a lens to move in a three-dimensional direction, that is, in an optical axis direction and two mutually perpendicular directions perpendicular to the optical axis, wherein the lens moves in the optical axis direction mainly for focusing and the lens moves in the perpendicular optical axis direction for anti-shake. The existing lens driving device comprises a shell, a base, an inner frame, an outer frame, a carrier, an upper reed, a lower reed and a plurality of side reeds, wherein the shell and the base are matched to form an accommodating space, a plurality of groups of coils are arranged on the base, the outer frame is movably connected to the top of the base and is positioned in the accommodating frame, the inner frame is movably installed in the outer frame, coils are arranged on the carrier and can be movably installed in the inner frame, the upper reed is connected to the tops of the carrier and the inner frame, the lower reed is connected to the bottoms of the carrier and the inner frame, the carrier and the inner frame are elastically connected through the matching of the upper reed and the lower reed, and the carrier can reset after moving. Part of the lateral reeds in the lateral reeds are connected to the inner frame and the outer frame, the inner frame and the outer frame are elastically connected, the outer frame and the base are elastically connected by the other part, magnets are arranged on the inner frame and the outer frame, and the magnets of the inner frame and the outer frame are matched with the carrier and the multiple 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 the base is provided with a circuit board, the coil of the base is generally positioned in the circuit board, and the inside of the base is provided with a metal sheet which can be connected with an external power supply and inputs current to the coil on the carrier and the coil of the circuit board. In the prior art, the metal sheet of the base is dislocated, which is inconvenient to connect to the coil in the circuit board, and in order to facilitate the stable electrical connection between the coil in the circuit board and the metal sheet on the base, it is necessary to find a method for accurately positioning and installing the circuit board and the base.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a base subassembly and camera lens drive arrangement to solve the problem that exists among the above-mentioned prior art.

In order to solve the problem, according to the utility model discloses an aspect provides a base component, base component is used for camera lens drive arrangement, camera lens drive arrangement includes inside casing, frame, carrier, be equipped with first group magnetite on the inside casing, the carrier mobile install in the inside casing, the carrier is used for installation camera lens and is equipped with first group coil, first group coil cooperation first group magnetite can drive the carrier is followed the motion of optical axis direction, inside casing mobile install in the frame, be equipped with the second group magnetite in the frame, base component includes:

the base comprises a plastic part and a plurality of metal sheets, the metal sheets are arranged in an insulated manner and embedded into the plastic part, one ends of the metal sheets are used for connecting an external power supply, and the other ends of part of the metal sheets in the metal sheets are exposed out of the plastic part and bent towards the top or the bottom of the base;

the circuit board is arranged on the top surface of the base, a second group of coils are arranged in the circuit board, and the second group of coils are electrically connected with the other end of the metal sheet.

In one embodiment, the plastic part is plate-shaped;

and the other end of part of the metal sheet is arc-shaped and is bent towards the top of the plastic part.

In one embodiment, the number of the second group of coils is two, the number of the metal sheets is four, two metal sheets of the four metal sheets are electrically connected with two ends of one of the second group of coils of the two second groups of coils, and the other two metal sheets are electrically connected with two ends of the other second group of coils.

In one embodiment, the plastic part is rectangular, and the other ends of the four metal sheets are positioned inside the plastic part and arranged at intervals.

In one embodiment, the other end of another part of the metal sheets is exposed to four corners of the plastic part for connecting the first set of coils.

In one embodiment, four corners of the plastic part are provided with four bosses, and the other ends of another part of the metal sheets extend into the four bosses and are exposed to the outer sides of the bosses respectively.

In one embodiment, a sensor is further included, the sensor electrically connected to the metal sheet.

In one embodiment, the number of sensors is at least two.

In one embodiment, a groove is formed in the top surface of the plastic part, a positioning member is arranged in the groove, and the positioning member extends from the bottom of the groove to the top of the plastic part;

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

The utility model discloses still relate to a camera lens drive arrangement, include:

the base described above;

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

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

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

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

a plurality of side springs, a portion of said side springs of said plurality of side springs being connected to and operable to resiliently connect said inner frame to said outer frame, another portion of said side springs being connected to and operable to resiliently connect said outer frame to said 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 coil link of first group sheetmetal in the base is buckled towards plastic part top or top, and a plurality of sheetmetals are difficult for the dislocation after buckling because the coil link is buckled behind the mode embedding plastic part of moulding plastics behind the mode to the convenience is with coil link welding to second group coil, avoids appearing rosin joint or other poor problems of welding, and then improves the machining efficiency of base and the quality of base.

Drawings

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

Fig. 2 is an assembly drawing of the base, inner frame, outer frame, carrier, first resilient member, second resilient member and upper spring of the embodiment of fig. 1.

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

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

Fig. 5 is a side view of the metal sheet in the base in the embodiment of fig. 1.

Reference numerals: 100. a lens driving device; 1. a base assembly; 11. a plastic part; 111. a boss; 112. a positioning member; 12. a metal sheet; 121. a first set of metal sheets; 1211. a coil connecting end; 122. A second set of metal sheets; 123. a third set of metal sheets; 124. a power supply connection end; 13. a circuit board; 14. A sensor; 2. a housing; 3. an inner frame; 4. an outer frame; 5. a carrier; 51. a spring plate is arranged; 52. a lower reed; 6. 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 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 a lens driving device 100. As shown in fig. 1, 2, 3, 4 and 5, the lens driving apparatus 100 includes a base assembly 1, a housing 2, an inner frame 3, an outer frame 4, a carrier 5, an upper spring sheet 51, a lower spring sheet 52 and a plurality of side spring sheets 6. The base assembly 1 includes a base and a circuit board 13, the base includes a plastic part 11 and a plurality of metal sheets 12, the plurality of metal sheets 12 are embedded in the plastic part 11, and one end of each metal sheet 12 is capable of being connected to an external power source, the other end of a part of the metal sheets 12 in the plurality of metal sheets 12 is exposed outside the plastic part 11 and is bent towards the top or the bottom of the plastic part 11, the part of the metal sheets 12 is defined as a first group of metal sheets 121, one end of the first group of metal sheets 121 exposed outside the plastic part 11 and bent towards the top or the bottom of the plastic part 11 is a coil connection end 1211, the circuit board 13 is installed on the bottom surface of the base and is provided with a second group of coils (not shown in the figure) inside the circuit board 13, and the second group of coils is electrically connected to the coil connection end 1211. The base and the housing 2 cooperate to form an accommodating space, the inner frame 3 is located in the accommodating space, and the inner frame 3 is provided with a first set of magnets (not shown). The carrier 5 is movably mounted in the inner frame 3, the carrier 5 is used for mounting a lens, and a first set of coils (not shown) is further arranged on the carrier 5, and after being electrified, the first set of coils can be matched with a first set of magnets to drive the carrier 5 to move relative to the inner frame 3 along the optical axis direction so as to adjust the focal length. The outer frame 4 is installed in the accommodating space and movably connected to the top of the base, the outer frame 4 is movably installed outside the inner frame 3, and a second set of magnets (not shown) is arranged in the outer frame 4. The upper spring 51 is connected to the top of the carrier 5 and the inner frame 3, the lower spring 52 is connected to the bottom of the carrier 5 and the inner frame 3, the upper spring 51 and the lower spring 52 have elasticity and can elastically connect the carrier 5 and the inner frame 3, and after the carrier 5 moves in the optical axis direction, the upper spring 51 and the lower spring 52 can be matched to enable the carrier 5 to reset. In addition, the lower spring 52 is also electrically connected to the first group of coils and the metal sheet 12, the metal sheet 12 can also be connected to an external power source, and current can reach the first group of coils on the carrier 5 through the metal sheet 12 and the lower spring 52. The side spring pieces 6 have elasticity, and a part of the side spring pieces 6 in the plurality of side spring pieces 6 are connected between the inner frame 3 and the outer frame 4 and can elastically connect the inner frame 3 and the outer frame 4, and the first elastic piece can drive the inner frame 3 and the carrier 5 to reset relative to the outer frame 4 after the carrier 5 moves along the X axis. The other part of the plurality of side spring pieces 6 is connected between the outer frame 4 and the base, and can elastically connect the outer frame 4 and the base, and the second elastic piece can drive the outer frame 4, the inner frame 3 and the carrier 5 to reset relative to the base after the carrier 5 moves along the Y axis. The second set of coils cooperates with the first set of magnets (not shown) and the second set of magnets (not shown) to drive the carrier 5 to move along a direction perpendicular to the optical axis, so as to prevent the lens from shaking and avoid 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.

In addition, the first group of coils can also be electrically connected to the metal sheet 12 and the lower spring plate 52 in the base through the outer frame 4, for example, a conductive member can be arranged on the outer frame 4 and connected with the metal sheet 12 and the lower spring plate 52, and current can sequentially flow through the metal sheet 12 in the base, the conductive member on the frame, the lower spring plate 52 to the first group of coils on the carrier 5, so as to realize the energization of the first group of coils.

The utility model discloses a coil link 1211 of first group sheetmetal 121 in the base is buckled towards plastic part 11 top or top, and a plurality of sheetmetals 12 are through the mode embedding plastic part 11 back of moulding plastics, because coil link 1211 is difficult for the dislocation after buckling to the convenience is with coil link 1211 welding to second group's coil, avoid appearing rosin joint or other poor problems of welding, and then improve the machining efficiency of base and the quality of base.

Fig. 3 is a perspective view of the base in the embodiment shown in fig. 1, fig. 4 is a top view of a metal sheet 12 in the base in the embodiment shown in fig. 1, fig. 5 is a side view of the metal sheet 12 in the base in the embodiment shown in fig. 1, and as shown in fig. 3, fig. 4 and fig. 5, the base assembly 1 includes a base and a circuit board 13, wherein the base includes a plastic part 11 and a plurality of metal sheets 12, the plurality of metal sheets 12 are disposed in an insulated manner and embedded in the plastic part 11, one end of the plurality of metal sheets 12 is used for connecting an external power source, the other end of a first group of metal sheets 121 in the plurality of metal sheets 12 is a coil connection end 1211, and the coil connection end 1211 is exposed outside the plastic part 11 and is bent toward the top or the bottom of the base. The circuit board 13 is mounted on the top surface of the base, and the second set of coils in the circuit board 13 are electrically connected to the coil connection ends 1211 of the first set of metal sheets 121.

In addition, as shown in fig. 4, one end of the metal sheets 12 for connecting an external power supply is bent toward the bottom of the plastic part 11, and one end of the metal sheets 12 for connecting the external power supply is defined as a power connection end 124, in the embodiment of fig. 4, the power connection ends 124 of the metal sheets 12 are respectively located at two opposite sides of the plastic part 11 and are bent toward the bottom of the plastic part 11, so that the external power supply is conveniently connected from the bottom of the base. It should be understood that the location of the power connection 124 is not limited to the embodiment of fig. 4.

Preferably, the plastic member 11 is plate-shaped, the coil connection end 1211 is arc-shaped, and the coil connection end 1211 is bent toward the top of the plastic member 11, so as to be closer to the circuit board 13 on the top of the plastic member 11, thereby facilitating connection of the second set of coils in the circuit board 13. In addition, the coil connecting end 1211 may be designed in other sheet-like forms, such as a rectangular shape, a circular shape, or an irregular shape, and the shape of the coil connecting end 1211 is not limited herein as long as it is convenient to connect with the second group of coils.

Alternatively, as shown in fig. 4, the number of the second group of coils is two, while the number of the metal sheets 12 in the first group of metal sheets 121 is four, any two metal sheets 12 of the four metal sheets 12 electrically connect two ends of two second group of coils to form a closed loop, and the other two metal sheets 12 electrically connect two ends of the other second group of coils to form a closed loop. In addition, more second coils can be arranged on the inner page of the circuit board 13, and the number of the first set of metal sheets 121 needs to be matched with the number of the second coils and is used for electrifying the second coils.

Optionally, the plastic part 11 is rectangular, and the other ends of the four metal sheets 12 are located inside the plastic part 11 and are arranged at intervals. In the embodiment shown in fig. 4, the plastic part 11 is further provided with a central hole around which four metal sheets 12 are evenly spaced. It should be understood that the four metal sheets 12 may be arranged in other ways, and are not limited to the embodiment of fig. 4.

Further, the other end of another part of metal sheet 12 in the plurality of metal sheets 12 is exposed at four corners of the plastic part 11, and the another part of metal sheet 12 is defined as a second group of metal sheet 122, the second group of metal sheet 122 is used for connecting with the first group of coils, specifically, a conductive member may be disposed on the outer frame 4 and connected with the second group of metal sheet 122 and the lower spring 52, and current may sequentially flow through the metal sheet 12 in the base, the conductive member on the frame, the lower spring 52 to the first group of coils on the carrier 5, so as to energize the first group of coils.

Preferably, four corners of the plastic part 11 are provided with four bosses 111, the other ends of the second group of metal sheets 122 extend into the four bosses 111 and are exposed outside the bosses 111, the outer sides of the bosses 111 are used for connecting the side reeds 6, and the side reeds 6 are electrically connected to the conductive members of the frame, so that the current of the second group of metal sheets 122 is transmitted from the side reeds 6 to the frame to obtain the conductive members, and then flows into the first group of coils, which is convenient for processing, does not need to obtain extra lines, and has a compact structure.

Optionally, base assembly 1 further comprises a sensor 14, sensor 14 is configured to sense a position of inner frame 3, sensor 14 is electrically connected to a portion 12 of plurality of metal sheets 12, and top cover portion 12 is a third set of metal sheets 123, and third set of metal sheets 123 is configured to energize sensor 14.

Alternatively, the number of the sensors 14 is at least two, and the two sensors 14 are electrically connected to the two pairs of metal sheets 12 of the third group of metal sheets 123, respectively. Two sensors 14 respectively detect the position of the inner frame 3 moving in the direction perpendicular to the optical axis of the lens, for example, one sensor 14 detects the position of the inner frame 3 moving in the direction perpendicular to the optical axis in the X-axis direction, and the other sensor is used for detecting the position of the inner frame 3 moving in the direction perpendicular to the optical axis in the Y-axis direction, where the X-axis and the Y-axis are perpendicular to each other.

Preferably, a recess is formed in the top surface of the plastic component 11, a positioning member 112 is disposed in the recess, the positioning member 112 extends from the bottom of the recess toward the top of the plastic component 11, the circuit board 13 is mounted in the recess, and a positioning hole is formed in the circuit board 13 and can accommodate the positioning member 112. The positioning element 112 and the positioning hole are matched to facilitate the precise installation of the circuit board 13 on the plastic part 11, and also facilitate the positioning connection of the coil connection end 1211 of the first set of metal sheet 121 to the second set of coils, thereby improving the connection stability.

The utility model discloses a coil link 1211 of first group sheetmetal 121 in the base is buckled towards plastic part 11 top or top, and a plurality of sheetmetals 12 are through the mode embedding plastic part 11 back of moulding plastics, because coil link 1211 is difficult for the dislocation after buckling to the convenience is with coil link 1211 welding to second group's coil, avoid appearing rosin joint or other poor problems of welding, and then improve the machining efficiency of base and the quality of base.

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. The utility model provides a base component, base component is used for camera lens drive arrangement, camera lens drive arrangement includes inside casing, frame, carrier, be equipped with first group magnetite on the inside casing, the carrier mobile install in the inside casing, the carrier is used for installation camera lens and is equipped with first group coil, first group coil cooperation first group magnetite can drive the carrier is followed the motion of optical axis direction, inside casing mobile install in the frame, be equipped with second group magnetite in the frame, its characterized in that, base component includes:

the base comprises a plastic part and a plurality of metal sheets, the metal sheets are arranged in an insulated manner and embedded into the plastic part, one ends of the metal sheets are used for connecting an external power supply, and the other ends of part of the metal sheets in the metal sheets are exposed out of the plastic part and bent towards the top or the bottom of the base;

the circuit board is arranged on the top surface of the base, a second group of coils are arranged in the circuit board, and the second group of coils are electrically connected with the other end of the metal sheet.

2. The base assembly of claim 1, wherein the plastic member is plate-shaped;

and the other end of part of the metal sheet is arc-shaped and is bent towards the top of the plastic part.

3. The base assembly of claim 1, wherein the number of second set of coils is two, the number of portions of the metal sheet is four, two of the four metal sheets electrically connect two ends of one of the second set of coils of the two second sets of coils, and the other two metal sheets electrically connect two ends of the other one of the second set of coils.

4. The base assembly of claim 3, wherein the plastic member is rectangular, and the other ends of the four metal sheets are spaced apart and located inside the plastic member.

5. The base assembly of claim 4, wherein another portion of said plurality of said metal sheets has another end exposed at four corners of said plastic member for connecting said first set of coils.

6. The base assembly of claim 5, wherein four corners of the plastic member are provided with four bosses, and the other ends of another part of the metal sheets extend into the four bosses and are exposed to the outside of the bosses.

7. The base assembly of claim 1, further comprising a sensor electrically connected to the metal sheet.

8. The base assembly of claim 7, wherein the number of sensors is at least two.

9. The base assembly of claim 1, wherein the top surface of the plastic part has a recess, and a positioning member is disposed in the recess and extends from the bottom of the recess toward the top of the plastic part;

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

10. A lens driving apparatus, comprising:

the base of any one of claims 1-9;

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

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

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

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

a plurality of side springs, a portion of said side springs of said plurality of side springs being connected to and operable to resiliently connect said inner frame to said outer frame, another portion of said side springs being connected to and operable to resiliently connect said outer frame to said 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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