Three-dimensional elastic sheet and optical anti-vibration focusing motor

Abstract

The utility model belongs to the technical field of optical motors, and discloses a three-dimensional elastic sheet, which is provided with a body part, the body part is provided with a first end and a second end, the outer side of the first end is provided with a suspension wire structure in a reverse extending manner through a bending structure, and the second end is provided with a suspension wire structure in an extending manner through the bending structure; the suspension wire structure is provided with a first connecting hole, a second connecting hole and a third connecting hole which are distributed in a triangular mode. According to the utility model, the stability of the connection part of the three-dimensional elastic sheet can be improved, and the eccentricity between motor assemblies is improved, thereby effectively improving the overall yield of the motor. The utility model also discloses an optical anti-shake focusing motor with the three-dimensional elastic sheet.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical motors, and in particular relates to a three-dimensional spring piece and an optical image stabilization focusing motor. Background Art

[0002] The spring clip is a crucial component of the optical motor. Within the precise structure of an optical motor, it not only supports and secures key optical components but also regulates and maintains their precise position. Its unique elasticity and stability effectively reduce vibration and motion errors during operation, improving the motor's overall performance.

[0003] However, the current spring connection stability is still not high, especially after the motor base and motor bracket are glued together, a large offset will occur, causing eccentricity between the components, which is not conducive to improving the overall yield of the motor. Utility Model Content

[0004] In order to solve the above technical problems, the utility model discloses a three-dimensional spring clip, which can improve the stability of the connection parts of the three-dimensional spring clip and improve the eccentricity between motor components, thereby effectively improving the overall yield of the motor.

[0005] The utility model also discloses an optical anti-shake focusing motor with the three-dimensional spring piece.

[0006] The specific technical solutions of the utility model are as follows:

[0007] A three-dimensional spring piece, comprising a main body, the main body having a first end and a second end, a suspension wire structure extending in the opposite direction from the outer side of the first end through a bending structure, and a suspension wire structure extending along the second end through the bending structure;

[0008] Wherein, the suspension wire structure has connection hole 1, connection hole 2, and connection hole 3 arranged in a triangle.

[0009] The utility model forms a triangular arrangement of connection holes 1, 2 and 3 through the suspension wire structure, which can reduce the offset of the adhesive, optimize and improve the eccentricity between the motor components, and thus effectively improve the overall yield of the motor.

[0010] Preferably, the suspension wire structure comprises a sheet body 1, a sheet body 2, and a sheet body 3 which are perpendicular to each other and integrally formed, and the sheet body 3 is bent toward the main body to form a sheet body 4;

[0011] The connecting hole 1 is provided on the sheet body 1, the connecting hole 2 is provided on the root of the sheet body 1 connected to the sheet body 2, and the connecting hole 3 is provided on the sheet body 4.

[0012] The structure is simple, easy to present and highly feasible.

[0013] Preferably, a welding piece perpendicular to the sheet four is provided at the junction between the sheet three and the sheet four, for electrically connecting the metal embedded in the motor base and the FPC circuit.

[0014] The structure is simple and circuit conduction is easy to achieve.

[0015] Preferably, a welding portion is provided on the outer side of the main body facing the three-dimensional spring piece for connecting to a motor carrier.

[0016] This structure can effectively realize the power supply of the lens.

[0017] Preferably, the suspension wire structure is formed by bending the sheet structure twice at 45 degrees in the X-axis direction and the Y-axis direction respectively.

[0018] This arrangement is simple, can prevent the suspension wire structure from breaking during the bending process, and has good structural stability.

[0019] Preferably, there is a transition sheet between the second sheet and the third sheet.

[0020] The provision of the transition sheet body is conducive to ensuring that the bent sheet body 1, sheet body 2, and sheet body 3 are well formed perpendicular to each other, thereby ensuring the connection stability of the three-dimensional spring sheet.

[0021] The optical image stabilization focus motor includes the two three-dimensional springs as described above, and the two three-dimensional springs are arranged in a centrally symmetrical manner.

[0022] The structure has high stability and balanced overall force, and can well maintain the position accuracy between motor components.

[0023] Preferably, it also includes:

[0024] A carrier assembly, wherein the carrier assembly is provided with a coil 1 along a circumferential direction, and the carrier assembly is connected to the three-dimensional spring piece through a first end and a second end;

[0025] A base assembly, wherein the base assembly is provided with a second coil and is connected to the three-dimensional spring piece through a third connection hole; and

[0026] The bracket assembly is provided with a magnet, the bracket assembly is connected to the three-dimensional spring piece through the first connecting hole and the second connecting hole, and the bracket assembly is also connected to the carrier assembly through the upper spring piece.

[0027] The triangular connection points formed by connection holes one, two, and three provide greater stability between the bracket assembly, the base assembly, and the suspension structure. After the three-dimensional spring clips are connected to the base assembly and the bracket assembly, they can reduce or avoid offset, thereby optimizing and improving the eccentricity and increasing the overall yield of the motor.

[0028] Preferably, the carrier assembly is provided with a dispensing groove 1, and the bracket assembly is provided with a dispensing groove 2 corresponding to the dispensing groove 1, and the damping glue is injected between the dispensing groove 1 and the dispensing groove 2 to make the carrier assembly and the bracket assembly flexibly connected.

[0029] This structure can effectively avoid problems such as resonance and jitter of the bracket assembly and the carrier assembly in the Z-axis direction.

[0030] Preferably, the bracket assembly is provided with an anti-collision platform facing the base assembly, and in an initial state, there is a gap between the anti-collision platform and the base assembly.

[0031] This structure can achieve impact limitation between the bracket assembly and the base assembly, effectively prevent the magnet from colliding with the second coil, and avoid the problem of poor reliability caused by the impact of the three-dimensional shrapnel.

[0032] Compared with the existing technology, the present invention uses connection holes one, two, and three to solve the problem of unstable connection performance between the three-dimensional spring clip and the bracket assembly, avoids structural eccentricity, and thus effectively improves the overall yield of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a three-dimensional spring in an embodiment of the present invention;

[0034] Figure 2 Schematic diagram of an optical image stabilization focus motor according to an embodiment of the present invention;

[0035] Figure 3 for Figure 2 45° sectional view;

[0036] Figure 4 for Figure 2 Half-section view;

[0037] Figure 5 This is a schematic diagram of the connection between the three-dimensional spring piece and the bracket assembly in the embodiment of the present utility model;

[0038] Figure 6 This is a schematic diagram of the arrangement of the first and second dispensing tanks in an embodiment of the present utility model;

[0039] Figure 7 Schematic diagram of the arrangement of the anti-collision platform in the embodiment of the present utility model.

[0040] In the figure: 100-three-dimensional spring piece; 200-carrier assembly; 300-base assembly; 400-bracket assembly; 1-main body; 2-first end; 3-second end; 4-suspension wire structure; 401-sheet one; 402-sheet two; 403-sheet three; 404-sheet four; 405-welding part; 406-transition sheet; 5-bending structure; 6-connecting hole one; 7-connecting hole two; 8-connecting hole three; 9-welding part; 10-coil one; 11-coil two; 12-magnet; 13-upper spring piece; 14-glue dispensing slot one; 15-glue dispensing slot two; 16-anti-collision platform. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0042] like Figure 1 As shown, a three-dimensional spring piece 100 has a main body 1, the main body 1 has a first end 2 and a second end 3, a suspension structure 4 is arranged on the outside of the first end 2 through a bending structure 5 extending in the opposite direction, and the suspension structure 4 is extended along the second end 3 through the bending structure 5; the suspension structure 4 has a connecting hole 1 6, a connecting hole 2 7, and a connecting hole 3 8 arranged in a triangular shape.

[0043] In this embodiment, the main body 1 of the 3D spring 100 is an arc-shaped structure, with two suspension wire structures 4 forming a connection portion for connection to the anti-shake and focus motor to achieve anti-shake and focus functions. It should be noted that the first end 2 refers to the area between the middle and the end of the main body 1, not specifically the end. The same applies to the second end 3. Regarding the 3D spring 100 as a whole, its connection holes at different positions are connected to different components of the motor. The actual connection is not performed simultaneously. Therefore, the sequential connection of the connection holes at different positions may cause deformation compensation of the 3D spring 100, which causes the actual position of each component to deviate from the preset position, thereby causing assembly eccentricity. In this embodiment, the connection holes 1 6, 2, 7, and 3 are formed in the same plane, forming a stable triangular structure at their connection positions. This better meets the requirements of connection stability and avoids eccentricity when connecting specific components in the motor. In other words, compared with the technical solutions of the prior art with only one or two connection holes, the assembly offset can be reduced or avoided.

[0044] Specifically, the suspension structure 4 includes a mutually perpendicular, integrally formed sheet 1 401, a sheet 2 402, and a sheet 3 403. The sheet 3 403 is bent toward the main body 1 to form a sheet 4 404. The connection hole 1 6 is provided in the sheet 1 401, the connection hole 2 7 is provided at the base of the sheet 1 401 connecting to the sheet 2 402, and the connection hole 3 8 is provided in the sheet 4 404. In this embodiment, the main body 1, the bending structure 5, the sheet 1 401, and the sheet 4 404 are located in the same plane. The sheet 2 402 is perpendicular to the sheet 1 401, and the sheet 3 403 is perpendicular to the sheet 1 401 and to the sheet 2 402. This effectively satisfies the anti-shake requirements in the XY plane. Combined with the suspension structure 4, it also effectively achieves zoom in the Z direction. Therefore, it has excellent deformation capability for anti-shake and focusing, effectively supporting the anti-shake and focusing of the motor. In this embodiment, the three-dimensional spring element 100 is made of a conductive metal material, and thus can be configured as an electrical component to conduct electricity. Furthermore, in conjunction with the overall structure of the motor, a weld 405 perpendicular to the fourth sheet is provided at the junction of the third sheet 403 and the fourth sheet 404, for electrically connecting the metal embedded in the motor base and the FPC circuit. The junction can be the connection between the third sheet 403 and the fourth sheet 404, or a location on the third sheet 403 or the fourth sheet 404 near the aforementioned connection. During assembly, the motor base is provided with a welding hole for the weld 405. Therefore, once the weld 405 is inserted into the welding hole, welding can be performed directly in the welding hole. This welding circuit conduction process makes circuit conduction simpler and clearer, avoiding the risk of open circuits and short circuits caused by the excessive number of embedded components and insufficient arrangement and processing precision caused by conventional metal embedding processes. Moreover, the electrical connection is achieved directly in the welding hole through the weld 405, the metal embedded, and the FPC circuit, thereby reducing design and manufacturing costs.

[0045] In this embodiment, the main body 1 is provided with a welding portion 9 on the outside of the three-dimensional spring element 100 for connecting to the motor carrier. The main body 1 is provided with a branching piece on the outside of the three-dimensional spring element 100. The welding portion 9 is provided on the branching piece, thereby corresponding to the actual predetermined connection position, not only achieving a stable connection effect, but also achieving the purpose of simplifying the electrical connection.

[0046] In this embodiment, the suspension wire structure 4 is formed by bending the sheet structure twice at 45° in the X-axis and Y-axis directions. This bending process can avoid bending and fracture and has good structural stability. This can also optimize the overall height and width of the suspension wire structure 4 while meeting performance requirements, simplify the bending dimensions, optimize the process, increase the yield rate, greatly improve stability and efficiency, and reduce the weight of the overall three-dimensional spring piece 100. Furthermore, a transition sheet 406 is provided between the second sheet 402 and the third sheet 403. The transition sheet 406 can serve as a bending support portion to provide support for stamping.

[0047] Based on the above embodiment, this embodiment discloses an optical image stabilization focus motor, such as Figures 2 to 7 As shown, the device comprises two three-dimensional spring pieces 100 as described above, arranged symmetrically around the center. In this embodiment, the suspension wire structure 4 is symmetrically arranged at eight locations at four corners, providing motion stabilization in the XY plane. Compared to the prior art arrangement at four edges, this provides more space for other components, resulting in better performance and greater stability.

[0048] This embodiment also includes a carrier assembly 200, a base assembly 300, and a bracket assembly 400. The carrier assembly 200 is circumferentially provided with a coil 10, and the carrier assembly 200 is connected to the three-dimensional spring piece 100 via a first end 2 and a second end 3. The base assembly 300 is provided with a coil 2 11, and the base assembly 300 is connected to the three-dimensional spring piece 100 via a connection hole 3 8. The bracket assembly 400 is provided with a magnet 12, and the bracket assembly 400 is connected to the three-dimensional spring piece 100 via a connection hole 1 6 and a connection hole 2 7. The bracket assembly 400 is also connected to the carrier assembly 200 via an upper spring piece 13. By arranging the two three-dimensional spring pieces 100 in a centrally symmetrical manner, the carrier assembly 200, the base assembly 300, and the bracket assembly 400 can be stably connected. In particular, after the base assembly 300 and the bracket assembly 400 supported by the three-dimensional spring piece 100 are positioned and matched with the column holes and then glued, the offset is greatly reduced, the eccentricity between the two is improved, and the overall motor yield is effectively improved.

[0049] like Figure 6 As shown, further, in order to avoid resonance and / or jitter problems in the Z-axis direction during use of the motor, the carrier assembly 200 is provided with a dispensing groove 14, and the bracket assembly 400 is provided with a dispensing groove 15 corresponding to the dispensing groove 14. Damping glue is injected between the dispensing groove 14 and the dispensing groove 2 15 to enable the carrier assembly 200 and the bracket assembly 400 to be flexibly connected.

[0050] like Figure 7As shown, in this embodiment, the bracket assembly 400 is provided with an anti-collision platform 16 facing the base assembly 300. In the initial state, there is a gap between the anti-collision platform 16 and the base assembly 300. This structure can achieve impact limitation of the base assembly 300, effectively preventing the magnet 12 from colliding with the coil 2 11, and avoiding reliability issues caused by impact of the three-dimensional spring piece 100.

[0051] Therefore, in this embodiment, the carrier assembly 200 and the three-dimensional spring sheet 100 are fixed by riveting and bonding the ends (i.e., the first end 2 and the second end 3) of the bending structure 5 away from the suspension wire structure 4, and then the carrier assembly is electrically connected to realize the conductive circuit by performing a spot tin welding process on the outgoing sheet. Then, the carrier assembly 200 and the three-dimensional spring sheet 100 are placed on the base assembly 300 and fixed using a riveting and bonding process. Then, the bracket assembly 400 is assembled and placed above the three-dimensional spring sheet 100. The bracket assembly 400 is assembled and matched using the connection hole 1 6, the connection hole 2 7, and the connection hole 3 8. After that, the corresponding positions can be fixed using the glue dispensing process. After the above process is completed, the damping glue dispensing process is used to perform damping glue dispensing in the glue dispensing groove 14 and the glue dispensing groove 2 15. It should be understood that in the motor of this embodiment, there are corresponding glue dispensing grooves 14 and 15 at the four corners. After glue dispensing in sequence, the bonding is completed. Finally, a spot soldering process is used in the base assembly 300 to connect the welding piece 405 provided on the three-dimensional spring piece 100 with the internal circuit of the base assembly 300. Thus, the assembly is completed. It can be seen that the outer shell 500 can be installed on the outside of this embodiment.

[0052] Thus, the base assembly 300 is fixed relative to the entire motor. When current flows into the embedded metal and FPC circuits within the base assembly 300, coil 2 11 is energized, generating a driving electromagnetic force with magnet 12, thereby causing the bracket assembly 400 to move along the XY plane, causing the entire bracket assembly 400 to move with anti-shake. After the current passes through weldment 405, it is connected to the circuit of coil 10 through the three-dimensional spring 100. At this time, it can generate a driving electromagnetic force relative to magnet 12, thereby generating a driving electromagnetic force in the Z-axis direction on the carrier assembly 200, causing the entire carrier assembly 200 to move along the Z axis, causing the entire carrier assembly 200 to focus. Consequently, this embodiment has reliable and stable performance, a compact structure, and a high performance yield, effectively achieving overall product optimization.

[0053] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications may be made without departing from the spirit and scope of the present invention, and such improvements and modifications shall also be considered within the scope of protection of the present invention.

Claims

1. A three-dimensional spring, characterized in that: The three-dimensional spring piece has a main body, the main body has a first end and a second end, a suspension wire structure is provided on the outer side of the first end through a bending structure extending in the opposite direction, and a suspension wire structure is provided along the second end through the bending structure extending; Wherein, the suspension wire structure has connection hole 1, connection hole 2, and connection hole 3 arranged in a triangle.

2. The three-dimensional spring sheet according to claim 1, wherein: The suspension wire structure includes a sheet body 1, a sheet body 2, and a sheet body 3 that are perpendicular to each other and integrally formed, and the sheet body 3 is bent toward the main body to form a sheet body 4; The connecting hole 1 is provided on the sheet body 1, the connecting hole 2 is provided on the root portion where the sheet body 1 is connected to the sheet body 2, and the connecting hole 3 is provided on the sheet body 4.

3. The three-dimensional spring sheet according to claim 2, wherein: The joint between the sheet three and the sheet four is provided with a welding piece perpendicular to the sheet four, which is used to electrically connect the metal embedded in the motor base and the FPC circuit.

4. The three-dimensional spring sheet according to claim 2, wherein: The main body is provided with a welding portion on the outer side facing the three-dimensional spring piece for connecting with the motor carrier.

5. The three-dimensional spring sheet according to any one of claims 2 to 4, characterized in that: The suspended wire structure is formed by bending the sheet structure twice at 45 degrees in the X-axis direction and the Y-axis direction respectively.

6. The three-dimensional spring sheet according to claim 5, characterized in that: There is a transition sheet between the second sheet and the third sheet.

7. Optical image stabilization focus motor, characterized by: The invention comprises two three-dimensional spring pieces according to any one of claims 1 to 6, wherein the two three-dimensional spring pieces are arranged in a centrally symmetrical manner.

8. The optical image stabilization focus motor according to claim 7, wherein: Also includes: A carrier assembly, wherein the carrier assembly is provided with a coil 1 along a circumferential direction, and the carrier assembly is connected to the three-dimensional spring piece via a first end and a second end; A base assembly, wherein the base assembly is provided with a second coil and is connected to the three-dimensional spring piece through a third connection hole; and The bracket assembly is provided with a magnet, the bracket assembly is connected to the three-dimensional spring piece through the first connecting hole and the second connecting hole, and the bracket assembly is also connected to the carrier assembly through the upper spring piece.

9. The optical image stabilization focus motor according to claim 8, wherein: The carrier component is provided with a first glue dispensing groove, and the bracket component is provided with a second glue dispensing groove corresponding to the first glue dispensing groove. Damping glue is injected between the first glue dispensing groove and the second glue dispensing groove to enable the carrier component and the bracket component to be flexibly connected.

10. The optical image stabilization focus motor according to claim 8, wherein: The support assembly is provided with an anti-collision platform facing the base assembly. In an initial state, there is a gap between the anti-collision platform and the base assembly.

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