Reed and lens drive mechanism

Abstract

The present invention discloses a spring and lens drive mechanism. The spring is sheet-shaped and includes a spring wire, a base connection portion, and an anti-shake platform connection portion. The spring wire is elastic, and the base connection portion includes a base connection area and a first spring wire connection end. The base connection area is used to connect to the base of the lens drive mechanism, and one end of the first spring wire connection end is connected to the base connection area, and the other end is bent away from the spring and connected to the spring wire. The anti-shake platform connection portion is used to connect to the anti-shake platform, and the anti-shake platform connection portion is connected to the spring wire. The spring wire allows the base connection portion and the anti-shake platform connection portion to be telescopically connected, and the base connection portion is connected to the base, and the anti-shake platform connection portion is connected to the anti-shake platform. The spring can prevent the second groove from disengaging from the ball bearing during movement when the anti-shake platform moves in a direction perpendicular to the optical axis.

Description

Technical Field

[0001] The present invention relates to the field of optical driving, and in particular to a spring and lens driving mechanism. Background Art

[0002] With the development of technology, many electronic devices now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and thinner designs to provide users with more choices.

[0003] In practice, to accommodate a variety of shooting scenarios, the lens needs to be constantly focused. During this process, it's also necessary to prevent lens shake. In the prior art, a lens drive mechanism is typically used to drive the lens in three directions: along the optical axis and in two mutually perpendicular directions perpendicular to the optical axis. Lens movement along the optical axis is primarily used for focusing, while movement perpendicular to the optical axis is used for anti-shake. Existing lens drive mechanisms generally include a housing, a frame, a carrier, an upper spring, a lower spring, multiple suspension wires, and a base. The housing and base cooperate to provide a housing for mounting the frame and carrier. The frame is equipped with multiple sets of magnets and also has a hollow structure. The carrier, for mounting the lens, is mounted within the hollow structure of the frame. The carrier is equipped with a set of coils that cooperate with the magnets on the frame to drive the carrier and lens along the optical axis. The upper spring connects the frame and carrier at the top, while the lower spring connects the frame and carrier at the bottom. The upper and lower springs allow the frame and carrier to be movably connected. Multiple suspension wires connect the base and the upper spring, transmitting current from the base to the upper spring. External current is then transmitted sequentially from the base, suspension wires, upper spring, frame, and lower yellow plate to the coil on the carrier. Additionally, two additional sets of coils are mounted on the base. These coils cooperate with magnets on the frame to drive the carrier and lens in a direction perpendicular to the optical axis. If the lens shakes, i.e., deviates from the imaging chip, these two sets of coils, in conjunction with the magnets on the frame, drive the carrier and lens in a direction perpendicular to the optical axis, aligning the lens with the imaging chip along the optical axis.

[0004] It can be seen from this that the existing technology for preventing lens shake requires driving the carrier and lens to move along the direction perpendicular to the optical axis, and aligning the lens with the imaging chip along the optical axis. However, due to the size and weight of the carrier and lens, it is difficult to accurately control the movement distance of the carrier and lens. Summary of the Invention

[0005] The object of the present invention is to provide a spring and lens driving mechanism to solve the above problems in the prior art.

[0006] In order to solve the above problem, according to one aspect of the present invention, a reed is provided, which is applied to a lens drive mechanism. The reed is sheet-shaped and includes:

[0007] a spring wire having elasticity;

[0008] a base connection portion, the base connection portion comprising a base connection area and a first spring wire connection end, the base connection area being used to connect to the base of the lens drive mechanism, one end of the first spring wire connection end being connected to the base connection area, and the other end being bent away from the spring leaf and connected to the spring wire; and

[0009] an anti-shake platform connecting portion, the anti-shake platform connecting portion being used to connect to the anti-shake platform and connected to the spring wire;

[0010] The spring wire enables the base connection portion and the anti-shake platform connection portion to be telescopically connected.

[0011] In one embodiment, the spring wire is ring-shaped, the base connection portion is located at the outer periphery of the spring wire, and the anti-shake platform is connected to the inner periphery of the spring wire.

[0012] In one embodiment, the base connection portion is annular and is disposed around the spring wire. One end of the first spring wire connection end is connected to the inner periphery of the base connection area, and the other end is connected to the spring wire.

[0013] In one embodiment, the base connection area is an axisymmetric structure.

[0014] In one embodiment, the number of the first spring wire connection ends is two, and the two first spring wire connection ends are respectively connected to two opposite sides of the base connection portion.

[0015] In one embodiment, the two first spring wire connection ends are symmetrically arranged relative to the symmetry axis of the base connection area.

[0016] In one embodiment, the number of the spring wires is two, and both of the spring wires are ring-shaped, wherein one of the spring wires is arranged around the other spring wire and the two spring wires are arranged at intervals.

[0017] In one embodiment, the spring sheet further includes a plurality of connecting sheets, two ends of the plurality of connecting sheets are respectively connected to the two spring wires, and the plurality of connecting sheets are arranged at intervals along the circumference of the two spring wires.

[0018] In one embodiment, the anti-shake platform connection portion includes an anti-shake platform connection area and a second spring wire connection end. The anti-shake platform connection area is ring-shaped, and the second spring wire connection end is sheet-shaped with one end connected to the anti-shake platform connection area and the other end connected to the spring wire.

[0019] In one embodiment, the base connection area is further provided with a plurality of connection holes, which are arranged at intervals along the circumference of the base connection area, and the connection holes are used to cooperate with the columns on the base of the lens driving mechanism.

[0020] The present invention also relates to a lens driving mechanism, comprising:

[0021] shell;

[0022] A base, wherein the base and the housing cooperate to form a receiving space, and a top surface of the base is provided with a plurality of first grooves;

[0023] a plurality of balls, each of which is movably mounted in the first groove;

[0024] A motor, the motor being installed in the accommodation space and comprising a housing, a frame, and a carrier, the housing being connected to the top of the base, the frame being installed in the housing, and the frame being provided with multiple sets of magnets, the carrier being installed in the frame, and the carrier being used to mount a lens;

[0025] an anti-shake platform, movably mounted within the housing and positioned below the frame; the anti-shake platform being provided with an imaging chip and multiple sets of coils, the imaging chip being aligned with the lens along the optical axis; the multiple sets of coils cooperating with the multiple sets of magnets to drive the anti-shake platform to move in a direction perpendicular to the optical axis; a bottom surface of the anti-shake platform being provided with multiple second grooves, the multiple second grooves being respectively positioned on top of the multiple ball bearings and capable of driving the multiple ball bearings to roll in a direction perpendicular to the optical axis, thereby enabling the anti-shake platform to be slidably connected to the base;

[0026] The above-mentioned reed, the base connection area is connected to the base, the anti-shake platform connection part is connected to the anti-shake platform, and the reed is used to prevent the ball from escaping from the second groove.

[0027] The lens drive mechanism of the present invention can drive the anti-shake platform to move perpendicular to the optical axis, thereby aligning the imaging chip and the lens along the optical axis and precisely controlling the imaging chip's movement distance. Furthermore, the spring of the present invention is installed between the anti-shake platform and the base, and the anti-shake platform connection portion and the base connection area of ​​the spring are not on the same plane. This makes it easier for the spring wire to pull the anti-shake platform closer to the base, thereby preventing the second groove of the anti-shake platform from disengaging from the ball bearing. It also limits the direction of movement of the anti-shake parallel to that of the imaging chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a diagram showing the lens drive mechanism according to an embodiment of the present invention.

[0029] Figure 2 yes Figure 1A perspective view of the reed in the illustrated embodiment.

[0030] Figure 3 yes Figure 1 A perspective view of the base, ball and reed in the illustrated embodiment.

[0031] Figure 100, lens drive mechanism; 1, spring; 11, spring wire; 12, base connection portion; 121, base connection area; 122, first spring wire connection end; 13, anti-shake platform connection portion; 131, anti-shake platform connection area; 132, second spring wire connection end; 14, connecting piece; 15, connecting hole; 2, housing; 3, base; 31, first groove; 32, column; 4, ball bearing; 5, motor; 6, anti-shake platform; 61, imaging chip; 62, coil. DETAILED DESCRIPTION

[0032] 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 present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0033] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, 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.

[0034] 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 "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 manner in one or more embodiments.

[0035] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0036] The present invention relates to a lens driving mechanism 100, such as Figure 1As shown, the lens drive mechanism 100 includes a housing 2, a base 3, a motor 5, an anti-shake platform 6, multiple balls 4, and a spring 1. The base 3 and the housing 2 cooperate to form a receiving space, and the top surface of the base 3 is provided with multiple first grooves 31, in which the multiple balls 4 are movably mounted. The motor 5 is installed in the receiving space and includes a housing, a frame, and a carrier. The bottom of the housing is connected to the top surface of the base 3, and the frame is installed in the housing. The frame is provided with multiple sets of magnets, and the carrier is installed in the frame. The carrier is used to mount the lens.

[0037] The anti-shake platform 6 is movably mounted within the housing and positioned beneath the frame and carrier. It also incorporates an imaging chip 61 and multiple coils 62. The imaging chip 61 is aligned with the lens mounted on the carrier along the optical axis. When the lens shakes perpendicularly to the optical axis, the coils 62, in conjunction with the magnets on the frame, drive the anti-shake platform 6 in a direction perpendicular to the optical axis, thereby aligning the imaging chip 61 with the lens mounted on the carrier. The bottom surface of the anti-shake platform 6 is provided with multiple second grooves, each located atop a plurality of ball bearings 4. When the anti-shake platform 6 moves perpendicular to the optical axis, the second grooves drive the ball bearings 4 to roll within the first grooves 31, allowing the anti-shake platform 6 to slidably connect to the base 3. The first and second grooves, in conjunction with the ball bearings 4, allow the square-headed platform 6 to slidably connect to the base 3. This also restricts the anti-shake platform 6 to slide along the base 3, effectively limiting its movement perpendicular to the optical axis.

[0038] Reed 1 is positioned between the anti-shake platform 6 and the base 3. The base connection area 121 on reed 1 is connected to the base 3, and the anti-shake platform connection portion 13 is connected to the anti-shake platform 6. Reed 1 is used to prevent the ball bearing 4 from disengaging from the second groove. The lens drive mechanism 100 of the present invention can drive the anti-shake platform 6 to move in a direction perpendicular to the optical axis, thereby aligning the imaging chip 61 with the lens along the optical axis and precisely controlling the movement distance of the imaging chip 61.

[0039] Figure 2 FIG. 1 is a schematic diagram of a reed 1 according to an embodiment of the present invention. Figure 2As shown, the spring plate 1 is sheet-shaped and includes a spring wire 11, a base connection portion 12, and an anti-shake platform connection portion 13. The spring wire 11 is elastic, while the base connection portion 12 includes a base connection area 121 and a first spring wire connection end 122. The base connection area 121 is used to connect to the base 3 of the lens drive mechanism 100. One end of the first spring wire connection end 122 is connected to the base connection area 121, while the other end is bent away from the spring plate 1 and connected to the spring wire 11. The anti-shake platform connection portion 13 is used to connect to the anti-shake platform 6 and is connected to the spring wire 11. The spring wire 11 enables a telescopic connection between the base connection portion 12 and the anti-shake platform connection portion 13. The base connection portion 12 is connected to the base 3, while the anti-shake platform connection portion 13 is connected to the anti-shake platform 6. The spring wire 11 forces the anti-shake platform 6 to move closer to the base 3 along the optical axis, preventing the second groove from disengaging from the ball bearing 4 during movement of the anti-shake platform 6 perpendicular to the optical axis.

[0040] Alternatively, as Figure 2 and Figure 3 As shown, the spring wire 11 is annular, the base connection part 12 is located at the outer periphery of the spring wire 11, and the anti-shake platform 6 is connected to the inner periphery of the spring wire 11. It should be understood that the base connection part 12 and the anti-shake platform 6 can also be any other shape, such as multiple sheets. In addition, the anti-shake platform connection part 13 can also be connected to the outer periphery of the spring wire 11, and the base connection part 12 can be connected to the inner periphery of the spring wire 11. The spring wire 11 can also be set to a variety of shapes, such as M-shaped or spiral shape or other arbitrary shapes. The shape of the spring wire 11 is not limited here, as long as the elasticity of the spring wire 11 can make the base connection part 12 and the anti-shake platform connection part 13 close to each other, and prevent the second groove of the anti-shake platform 6 from separating from the ball 4.

[0041] Optionally, continue to refer to Figure 2 and Figure 3 The base connection portion 12 is annular and is arranged around the spring wire 11. One end of the first spring wire connection end 122 is connected to the inner periphery of the base connection area 121, and the other end is connected to the spring wire 11. Figure 2 and Figure 3 In the embodiment shown, the base connection area 121 is a polygonal ring, and the first spring wire connection end 122 is a sheet, with one end of the first spring wire connection end 122 connected to the outer periphery of the base connection area 121 and the other end bent toward the direction close to the base 3. Figure 3 In the embodiment, a recessed portion is provided on the top surface of the base 3, and the base connection area 121 is connected to the top surface of the base 3. Due to the bending of the first spring wire connection end 122, the anti-shake platform connection portion 13 and the base connection area 121 are not in the same plane. After the spring leaf 1 is installed on the base 3, the anti-shake platform connection portion 13 is located in the recessed portion, making it easier for the spring wire 11 to drive the anti-shake platform 6 closer to the base 3.

[0042] Optionally, the base connection area 121 is an axisymmetric structure. Figure 2 and Figure 3 In the embodiment, the entire spring plate 1 is an axisymmetric structure, including the spring wire 11 and the anti-shake platform connection portion 13. It should be understood that in other embodiments, the base connection area 121 and the anti-shake platform connection portion 13 can be of any shape, and the shapes of the base connection area 121 and the anti-shake platform connection portion 13 are not limited.

[0043] Furthermore, there are two first spring wire connecting ends 122, each connected to opposite sides of the base connecting portion 12. The two first spring wire connecting ends 122 are identical in shape, and each first spring wire connecting end 122 is connected to the base connecting area 121 at one end, while the other end is bent toward the base 3 and connected to the spring wire 11, thereby bringing the spring wire 11 and the anti-shake platform connecting portion 13 closer to the base 3.

[0044] Optionally, continue to refer to Figure 2 and Figure 3 The base connection area 121 is an octagonal and axially symmetrical structure, in which four short sides and four long sides are arranged at intervals, and two first spring wire connection ends 122 are arranged on two opposite long sides. The two first spring wire connection ends 122 have the same structure and are symmetrically arranged relative to the symmetry axis of the base connection area 121.

[0045] Alternatively, as Figure 1 、 Figure 2 and Figure 3 As shown, there are two spring wires 11, and both spring wires 11 are ring-shaped, with one spring wire 11 arranged around the other spring wire 11 and the two spring wires 11 arranged at an interval. It should be understood that more spring wires 11 or a single spring wire 11 can also be provided, as long as the elasticity of the spring wire 11 can meet the requirements.

[0046] Optionally, the spring plate 1 further includes a plurality of connecting pieces 14, each of which is connected to the two spring wires 11 at its ends, and the connecting pieces 14 are arranged at intervals along the circumference of the two spring wires 11. The multiple connecting pieces 14 can connect the two spring wires 11 along the circumference, thereby allowing the two spring wires 11 to move synchronously and increasing the overall elasticity of the two spring wires 11.

[0047] Optionally, the anti-shake platform connection portion 13 includes an anti-shake platform connection area 131 and a second spring wire connection end 132, wherein the anti-shake platform connection area 131 is annular and located inside the spring wire 11, and the second spring wire connection end 132 is sheet-shaped, and one end of the second spring wire connection end 132 is connected to the anti-shake platform connection area 131, and the other end is connected to the spring wire 11. Figure 2 and Figure 3In the embodiment, the anti-shake platform connection area 131 is a rectangular ring, with its outer periphery spaced apart from the inner periphery of the spring wire 11. It should be understood that in other embodiments, the anti-shake platform connection area 131 may also be a ring or other shape, or may be a plurality of sheet-like structures individually connected to the spring wire 11. The shape of the anti-shake platform connection area 131 is not limited herein.

[0048] Optionally, the base connection area 121 is further provided with a plurality of connection holes 15, which are arranged at intervals along the circumference of the base connection area 121, and the connection holes 15 are used to cooperate with the cylinder 32 on the base 3 of the lens driving mechanism 100. Figure 3 As shown, the top surface of the base 3 is provided with a plurality of columns 32 , and the plurality of connection holes 15 of the base connection area 121 can be sleeved on the plurality of columns 32 , thereby fixing the base connection area 121 and the base 3 in connection.

[0049] The spring 1 of the present invention is installed between the anti-shake platform 6 and the base 3, and the anti-shake platform connecting portion 13 and the base connecting area 121 of the spring 1 are not on the same plane, making it easier for the spring wire 11 to pull the anti-shake platform 6 closer to the base 3, thereby preventing the second groove of the anti-shake platform 6 from separating from the ball 4.

[0050] While the preferred embodiments of the present invention have been described in detail above, it should be understood that, after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalents also fall within the scope of the claims appended hereto.

Claims

1. A lens driving mechanism, characterized in that: include: shell; A base, wherein the base and the shell cooperate to form a receiving space, and a top surface of the base is provided with a recessed portion and a plurality of first grooves; a plurality of balls, each of which is movably mounted in the first groove; A motor, the motor being installed in the accommodation space and comprising a housing, a frame, and a carrier, the housing being connected to the top of the base, the frame being installed in the housing, and the frame being provided with multiple sets of magnets, the carrier being installed in the frame, and the carrier being used to mount a lens; an anti-shake platform, movably mounted within the housing and positioned below the frame; the anti-shake platform being provided with an imaging chip and multiple sets of coils, the imaging chip being aligned with the lens along the optical axis; the multiple sets of coils cooperating with the multiple sets of magnets to drive the anti-shake platform to move in a direction perpendicular to the optical axis; a bottom surface of the anti-shake platform being provided with multiple second grooves, the multiple second grooves being respectively positioned on top of the multiple ball bearings and capable of driving the multiple ball bearings to roll in a direction perpendicular to the optical axis, thereby enabling the anti-shake platform to be slidably connected to the base; A reed, the reed being sheet-shaped and comprising: a spring wire having elasticity; a base connection portion, the base connection portion comprising a base connection area and a first spring wire connection end, the base connection area being used to connect to the base of the lens drive mechanism, one end of the first spring wire connection end being connected to the base connection area, and the other end being bent away from the spring leaf and connected to the spring wire; and an anti-shake platform connection portion, the anti-shake platform connection portion being used to connect to the anti-shake platform, the anti-shake platform connection portion being located in the recessed portion and connected to the spring wire; the anti-shake platform connection portion and the base connection area are not in the same plane; The spring wire enables the base connection portion and the anti-shake platform connection portion to be telescopically connected; The spring wire is ring-shaped, the base connection portion is located at the outer periphery of the spring wire, and the anti-shake platform is connected to the inner periphery of the spring wire.

2. The lens driving mechanism according to claim 1, wherein: The base connection portion is annular and is arranged around the spring wire. One end of the first spring wire connection end is connected to the inner periphery of the base connection area, and the other end is connected to the spring wire.

3. The lens driving mechanism according to claim 2, wherein: The base connection area is an axisymmetric structure.

4. The lens driving mechanism according to claim 1, wherein: The number of the first spring wire connection ends is two, and the two first spring wire connection ends are respectively connected to two opposite sides of the base connection portion.

5. The lens driving mechanism according to claim 4, wherein: The two first spring wire connection ends are symmetrically arranged relative to the symmetry axis of the base connection area.

6. The lens driving mechanism according to claim 1, wherein: There are two spring wires, and both of the spring wires are ring-shaped, wherein one spring wire is arranged around the other spring wire and the two spring wires are arranged at intervals.

7. The lens driving mechanism according to claim 6, wherein: The spring piece further includes a plurality of connecting pieces, two ends of which are respectively connected to the two spring wires, and the plurality of connecting pieces are arranged at intervals along the circumference of the two spring wires.

8. The lens driving mechanism according to claim 1, wherein: The anti-shake platform connection portion includes an anti-shake platform connection area and a second spring wire connection end. The anti-shake platform connection area is ring-shaped, and the second spring wire connection end is sheet-shaped with one end connected to the anti-shake platform connection area and the other end connected to the spring wire.

9. The lens driving mechanism according to claim 1, wherein: The base connection area is further provided with a plurality of connection holes, which are arranged at intervals along the circumference of the base connection area, and the connection holes are used to cooperate with the columns on the base of the lens driving mechanism.

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