Optical element driving mechanism

Abstract

The utility model discloses an optical element driving mechanism which comprises a base, a frame, a carrier and an elastic piece, the top surface of the base is provided with a plurality of first glue grooves, and the plurality of first glue grooves are arranged at intervals along the circumferential direction of the base, are opened towards the radial outer side of the base and are used for placing glue. The frame is located above the base and movably connected with the base, a plurality of second glue grooves are formed in the bottom face of the frame, and the second glue grooves are aligned with the first glue grooves in the vertical direction and used for containing glue. The carrier and the frame can be movably connected in the vertical direction. The elastic piece is elastically connected with the carrier and the frame and used for driving the carrier to reset.

Description

Technical Field

[0001] This utility model relates to the field of optical element driving technology, and in particular to an optical element driving mechanism. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones or digital cameras) have the function of taking pictures or recording videos. The use of these electronic devices is becoming more and more common, and they are developing towards convenient and thinner designs to provide users with more choices.

[0003] Some electronic devices with photographic or video recording capabilities include a lens drive mechanism to move optical components such as a lens, thereby achieving autofocus and optical image stabilization. Light can pass through the aforementioned optical components to form an image on the photosensitive element.

[0004] In some optical component drive mechanisms, damping adhesive is needed between the base and the frame to improve the stability of the frame. However, the curing process of the damping adhesive is complex and inconvenient to operate, and it needs to be simplified. Utility Model Content

[0005] The purpose of this invention is to provide an optical element driving mechanism to solve the problems of the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides an optical element driving mechanism, comprising:

[0007] The base has a plurality of first adhesive grooves on its top surface. The plurality of first adhesive grooves are arranged at intervals along the circumference of the base and open toward the radially outward side of the base for placing adhesive.

[0008] A frame is located above and movably connected to the base. The bottom surface of the frame is provided with a plurality of second glue grooves, which are aligned vertically with a plurality of first glue grooves for placing glue.

[0009] The carrier, which is movably connected to the frame in a vertical direction; and

[0010] An elastic element is elastically connected to the carrier and the frame, and is used to drive the carrier to reset.

[0011] In one embodiment, the first adhesive groove is a U-shaped groove or a C-shaped groove with its opening facing the radially outward side of the base.

[0012] In one embodiment, the base includes:

[0013] The base plate is a rectangular plate with a first groove and a second groove at each of its four corners. The first groove is formed by a recess in the top surface of the base plate, and the second groove is formed by a recess in the bottom wall of the first groove.

[0014] A circuit board, the circuit board being located on the top surface of the base plate and having a clearance groove, the clearance groove and the first groove being aligned in the vertical direction;

[0015] The four first adhesive grooves are located on the top surface of the first recess;

[0016] The optical element driving mechanism also includes four suspension wires, the bottom ends of which are connected to the bottom wall of the second groove, and the top ends of which are connected to the elastic element.

[0017] The frame is suspended above the base plate by elastic elements and four suspension wires;

[0018] The bottom surface of the frame is provided with four second adhesive grooves.

[0019] In one embodiment, the top surface of each of the second grooves is provided with a first boss;

[0020] Each of the first grooves is formed by a recess in the top surface of each of the first bosses.

[0021] In one embodiment, the opening of the second adhesive groove is open radially outward toward the frame.

[0022] In one embodiment, the second adhesive groove is a U-shaped groove or a C-shaped groove.

[0023] In one embodiment, the opening direction of the second glue tank is aligned vertically with the opening direction of the corresponding first glue tank.

[0024] In one embodiment, the bottom surface of the frame is provided with a protruding second boss;

[0025] The second groove is formed by the recessed bottom surface of the second boss.

[0026] In one embodiment, the bottom wall of the first glue tank and / or the top wall of the second glue tank are provided with a plurality of protrusions.

[0027] In one embodiment, the elastic element includes:

[0028] An upper spring, located at the top of the frame and elastically connected to the frame and the carrier; and

[0029] A lower spring, which is located at the bottom of the frame and is elastically connected to the frame and the carrier;

[0030] The top end of the suspension wire is connected to the upper spring plate.

[0031] This invention provides side openings for the first and second glue tanks, with the side openings facing the outside of the base or frame. This facilitates the curing and molding of the damping adhesive in the first and second glue tanks, making processing easier and improving production efficiency. Attached Figure Description

[0032] Figure 1 This is an exploded view of the optical element driving mechanism of one embodiment of the present invention.

[0033] Figure 2 and Figure 3 They are Figure 1 An exploded view of the optical element driving mechanism in the illustrated embodiment.

[0034] Figure 4 yes Figure 1 The assembly diagram of the base plate and suspension wire in the embodiment shown.

[0035] Figure 5 yes Figure 1 A perspective view of the frame in the illustrated embodiment.

[0036] Reference numerals: 100, Optical element driving mechanism; 1, Base; 11, Base plate; 12, Circuit board; 13, First groove; 14, Second groove; 15, First boss; 16, First adhesive groove; 17, Sensor; 2, Frame; 21, Magnet assembly; 22, Second boss; 23, Second adhesive groove; 3, Carrier; 31, Second coil assembly; 4, Upper spring; 5, Lower spring; 6, Suspension wire; 7, Housing; Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0038] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0039] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of this utility model. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this utility model, but are merely illustrative of the essential spirit of the technical solution of this utility model.

[0040] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0041] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0042] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0043] This utility model relates to an optical element driving mechanism 100, which includes a base 1, a frame 2, a carrier 3, an elastic element, and a housing 7. The base 1 supports the frame 2 and the carrier 3. The housing 7 is connected to the base 1 and forms a receiving space for accommodating the frame 2, the carrier 3, and the elastic element. The carrier 3 is used to mount a lens and drive the lens to move along the optical axis. The elastic element drives the carrier 3 to reset.

[0044] Specifically, such as Figures 1-3 As shown, the base 1 includes a base plate 11 and a circuit board 12. The base plate 11 is a rectangular plate with four corners. Each corner is provided with a first groove 13 and a second groove 14. The four first grooves 13 are formed by recesses in the four corners of the base plate 11. The four second grooves 14 are formed by recesses in the bottom walls of the four first grooves 13. The second grooves 14 are open to the outside of the base plate 11.

[0045] The top ends of the four suspension wires 6 are connected to the bottom walls of the four second grooves 14, and the top ends are connected to the elastic element.

[0046] Each first groove 13 has a protruding first boss 15 on its top surface, and each first boss 15 is close to the corresponding four side edges of the base plate 11. Each first boss 15 has a first adhesive groove 16 on its top surface, which has a top opening and a side opening 161. The top opening opens towards the top, while the side opening 161 opens towards the outside of the base plate 11.

[0047] The first adhesive groove 16 is preferably a C-shaped groove or a U-shaped groove, or other shapes with some protruding structures on the inner wall of the U-shaped groove or the inner wall of the C-shaped groove. It can also have the damping adhesive gathering effect in this technical solution. However, the first adhesive groove 16 must have a side opening 161, which is open to the outside of the bottom plate 11 to facilitate filling the damping adhesive and irradiating the damping adhesive with light to cure the damping adhesive.

[0048] The first adhesive groove 16 is used to place the damping adhesive. The side wall structure of the first adhesive groove 16 can gather the damping adhesive that has been filled in, improve the connection strength of the damping adhesive, and prevent the damping adhesive from falling off.

[0049] The bottom wall of the first adhesive groove 16 can be a planar structure, or it can be designed as a concave structure or multiple protruding structures, such as an arc-shaped protruding surface or an arc-shaped concave surface. This can increase the contact area between the damping adhesive and the first adhesive groove 16, and improve the bonding effect of the damping adhesive. Alternatively, the bottom wall of the first adhesive groove 16 can be roughened, which can also improve its bonding effect with the damping adhesive.

[0050] The circuit board 12 is stacked on the top surface of the base plate 11 and has clearance grooves at its four corners. These four clearance grooves are respectively aligned vertically with the four first grooves 13 of the base plate 11. The base plate 11 has built-in circuitry, and the circuit board 12 is electrically connected to the built-in circuitry and has a first coil group.

[0051] The frame 2 is ring-shaped and located above the base 1 and is movably connected to the base 1. The bottom surface of the frame 2 is provided with a protruding second boss 22. The bottom surface of each second boss 22 is provided with a second glue groove 23 facing the top surface groove. Each second glue groove 23 has a bottom opening and a side opening 231. The bottom opening opens towards the base plate 11, while the side opening 231 opens towards the radially outward side of the frame 2.

[0052] Preferably, the second glue groove 23 is a C-shaped groove or a U-shaped groove, or other shapes with some protruding structures on the inner wall of the U-shaped groove or the inner wall of the C-shaped groove. It can also have the damping glue gathering effect in this technical solution. However, the second glue groove 23 must have a side opening that faces the radially outward side of the frame 2 to facilitate filling the damping glue and irradiating the damping glue with light to cure it.

[0053] The damping adhesive in the second adhesive tank 23 can be cured by directing the illumination light toward the side opening. The side opening facilitates the illumination of the damping adhesive.

[0054] The second adhesive groove 23 is used to place the damping adhesive. The side wall structure of the second adhesive groove 23 can gather the damping adhesive that has been filled in, improve the connection strength of the damping adhesive, and prevent the damping adhesive from falling off.

[0055] The top wall of the second adhesive groove 23 can be a planar structure, or it can be designed as a concave structure or multiple protruding structures, such as an arc-shaped protruding surface or an arc-shaped concave surface. This can increase the contact area between the damping adhesive and the second adhesive groove 23, and improve the bonding effect of the damping adhesive. Alternatively, the top wall of the second adhesive groove 23 can be roughened, which can also improve its bonding effect with the damping adhesive.

[0056] Four second protrusions 22 extend into the second groove 14, and four second adhesive grooves 23 are respectively aligned vertically with the first adhesive groove 16. Furthermore, the side opening 231 of each second adhesive groove 23 and the corresponding side opening 161 of the first adhesive groove 16 are aligned vertically, that is, the damping adhesive in the second adhesive groove 23 and the corresponding first adhesive groove 16 can be cured together at one time by irradiating with light.

[0057] The damping adhesive in the first adhesive groove 16 and the damping adhesive in the second adhesive groove 23 are bonded together in the vertical direction, which can buffer the movement of the frame 2 and the reset effect after the frame 2 moves.

[0058] Of course, in some embodiments, the top surface of the base plate 11 is provided with a plurality of first adhesive grooves 16, and the bottom surface of the frame 2 is directly provided with a plurality of second adhesive grooves 23. The plurality of second adhesive grooves 23 and the plurality of first adhesive grooves 16 are aligned in the vertical direction, and both the first adhesive grooves 163 and the second adhesive grooves 23 are provided with side openings, and the side openings are open to the radially outward side of the base 1 or the frame 2.

[0059] The frame 2 is equipped with a magnet group 21, which cooperates with the first coil group in the circuit board 12 to drive the frame 2 to move radially. This radial direction is perpendicular to the vertical direction, and the frame 2 can achieve anti-shake function after moving.

[0060] The carrier 3 is located inside the ring of the frame 2 and is elastically connected to the frame 2. A second coil group 31 is provided on the outside. The second coil group 31 cooperates with the magnet group 21 to drive the carrier 3 to move in the vertical direction, which is the optical axis direction. The carrier 3 drives the lens to move in the optical axis direction to achieve the focusing function.

[0061] The elastic element includes an upper spring 4 and a lower spring 5. The upper spring 4 is located at the top of the frame 2 and is elastically connected to the frame 2 and the carrier 3. The upper spring 4 is also electrically connected to the top end of the suspension wire 6, and the bottom end of the suspension wire 6 is also electrically connected to the built-in wiring in the base plate 11. The lower spring 5 is located at the bottom of the frame 2 and is elastically connected to the frame 2 and the carrier 3. The upper spring 4 and the lower spring 5 cooperate to drive the carrier 3 to reset.

[0062] The coil group of carrier 3 is electrically connected to the spring 4 in the sea area. After the built-in circuit is energized, it can energize the second coil group 31 and the first coil group.

[0063] Two position sensors 17 are also installed inside the base plate 11, which can work with the magnet group 21 to monitor the movement of the frame 2 and the carrier 3, thereby achieving the effect of monitoring the movement of the lens.

[0064] This invention provides side openings for the first and second glue tanks, with the side openings facing the outside of the base or frame. This facilitates the curing and molding of the damping adhesive in the first and second glue tanks, making processing easier and improving production efficiency.

[0065] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0066] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0067] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An optical element driving mechanism, characterized in that, include: The base has a plurality of first adhesive grooves on its top surface. The plurality of first adhesive grooves are arranged at intervals along the circumference of the base and open toward the radially outward side of the base for placing adhesive. A frame is located above and movably connected to the base. The bottom surface of the frame is provided with a plurality of second glue grooves, which are aligned vertically with a plurality of first glue grooves for placing glue. The carrier, which is movably connected to the frame in a vertical direction; and An elastic element is elastically connected to the carrier and the frame, and is used to drive the carrier to reset.

2. The optical element driving mechanism according to claim 1, characterized in that, The first adhesive groove is a U-shaped groove or a C-shaped groove with its opening facing the radially outer side of the base.

3. The optical element driving mechanism according to claim 1, characterized in that, The base includes: The base plate is a rectangular plate with a first groove and a second groove at each of its four corners. The first groove is formed by a recess in the top surface of the base plate, and the second groove is formed by a recess in the bottom wall of the first groove. A circuit board, the circuit board being located on the top surface of the base plate and having a clearance groove, the clearance groove and the first groove being aligned in the vertical direction; The four first adhesive grooves are located on the top surface of the first recess; The optical element driving mechanism also includes four suspension wires, the bottom ends of which are connected to the bottom wall of the second groove, and the top ends of which are connected to the elastic element. The frame is suspended above the base plate by elastic elements and four suspension wires; The bottom surface of the frame is provided with four second adhesive grooves.

4. The optical element driving mechanism according to claim 3, characterized in that, Each of the second grooves has a first protrusion on its top surface; Each of the first grooves is formed by a recess in the top surface of each of the first bosses.

5. The optical element driving mechanism according to claim 1, characterized in that, The opening of the second adhesive groove faces the radially outward side of the frame.

6. The optical element driving mechanism according to claim 5, characterized in that, The second adhesive groove is a U-shaped groove or a C-shaped groove.

7. The optical element driving mechanism according to claim 1, characterized in that, The opening direction of the second glue tank is aligned vertically with the opening direction of the corresponding first glue tank.

8. The optical element driving mechanism according to claim 1, characterized in that, The bottom surface of the frame is provided with a protruding second boss; The second groove is formed by the recessed bottom surface of the second boss.

9. The optical element driving mechanism according to claim 1, characterized in that, The bottom wall of the first glue tank and / or the top wall of the second glue tank are provided with multiple protrusions.

10. The optical element driving mechanism according to claim 3, characterized in that, The elastic element includes: An upper spring, located at the top of the frame and elastically connected to the frame and the carrier; and A lower spring, which is located at the bottom of the frame and is elastically connected to the frame and the carrier; The top end of the suspension wire is connected to the upper spring plate.

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