Flexible circuit board fixing structure, lens driving device and camera device

Abstract

The present invention discloses a flexible circuit board fixing structure, including a base, and a flexible circuit board installed on the base through a multi-directional card slot positioning structure; the multi-directional card slot positioning structure includes front and rear positioning holes located on the side of the base, and an upper and lower step limit structure arranged on the outside of the base. An avoidance groove is provided on the base, and a chip is arranged in the avoidance groove and does not contact the base, and the chip is fixedly connected to the inner side of the side flexible circuit board. The present invention improves the fixing performance of the flexible circuit board by arranging a multi-directional card slot positioning structure on the base. At the same time, by providing an avoidance groove on the base, the chip is arranged in the avoidance groove and does not contact the base, which can effectively avoid the problem of the product being broken by external force during the experiment.

Description

Technical Field

[0001] The present invention relates to the field of lens driving devices, and in particular to a flexible circuit board fixing structure used in lens driving devices. Background Art

[0002] The existing lens driving device used in the camera device mounted on electronic devices such as smart phones has a fixing structure of the base, the flexible circuit board and the chip as follows:

[0003] The flexible circuit board is attached to the base at one side, and a groove is opened on the connection surface of the base and the flexible circuit board. The chip is installed in the groove and connected with the flexible circuit board for positioning.

[0004] The defects of the above connection structure are:

[0005] 1. The flexible circuit board and the base are limited on only one side. The positioning of the flexible circuit board depends on the chip. The supporting surface is small and the fixation of the flexible circuit board is poor.

[0006] 2. The chip is in contact with the base, and there is a risk of the chip being broken by force during the experiment, affecting product reliability. Summary of the invention

[0007] The purpose of the present invention is to provide a flexible circuit board fixing structure for a lens driving device in view of the deficiencies in the prior art, so as to solve the problems existing in the prior art.

[0008] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0009] The flexible circuit board fixing structure includes a base and a flexible circuit board installed on the base through a multi-directional card slot positioning structure; the multi-directional card slot positioning structure includes front and rear positioning holes located on the side of the base and an upper and lower step limit structure arranged on the outer side of the base.

[0010] Furthermore, a side plate is provided at the edge of the base, and front and rear positioning holes are opened on the side plate.

[0011] Furthermore, an annular edge is provided along the bottom of the base, the annular edge has a fracture, and a baffle is provided at both ends of the fracture; the lower end of the baffle has an extended end connected to the outer side of the side plate, and a positioning gap is left between the upper end of the baffle and the outer side of the side plate, and the positioning gap and the fracture constitute an upper and lower step limit structure.

[0012] Furthermore, a positioning block is provided on the inner side of the flexible circuit board, one end of the positioning block is connected to the inner side of the flexible circuit board, and the other end of the positioning block is arranged in the front and rear positioning holes for positioning cooperation.

[0013] Furthermore, a first positioning end protruding outward is respectively provided on both sides of the upper end of the flexible circuit board, and the first positioning end is arranged in the positioning gap for positioning fit.

[0014] Furthermore, a second positioning end facing downward is provided at a middle position of the lower end of the flexible circuit board, and the second positioning end is arranged in the fracture for positioning and matching.

[0015] Furthermore, the second positioning end and the first positioning end on one side respectively form a step opening structure, and the step opening structure is positioned and matched with the upper and lower step limiting structures.

[0016] Furthermore, an avoidance groove is provided on the base, the chip is arranged in the avoidance groove and does not contact the base, and the chip is fixedly connected to the inner side surface of the flexible circuit board at the side.

[0017] Furthermore, a plurality of connection points are provided on the connection surface between the chip and the flexible circuit board.

[0018] Furthermore, the number of the connection points is six, which are distributed on the chip in two rows and three columns.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting a multi-directional card slot positioning structure on the base, the fixing performance of the flexible circuit board is improved.

[0021] 2. By opening an avoidance groove on the base, the chip is set in the avoidance groove and does not contact the base, which can effectively avoid the problem of the product being broken by external force during the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the flexible circuit board fixing structure described in the present invention.

[0023] Figure 2 It is a schematic diagram of the base described in the present invention.

[0024] Figure 3 It is a schematic diagram of the upper and lower step limiting structure described in the present invention.

[0025] Figure 4 It is a schematic diagram of the outer side of the flexible circuit board described in the present invention.

[0026] Figure 5 It is a schematic diagram of the inner side surface of the flexible circuit board described in the present invention.

[0027] Figure 6 A schematic diagram of the chip according to the present invention.

[0028] Figure 7This is a schematic diagram of the chip of the present invention being located in the avoidance groove.

[0029] Figure 8 Schematic diagram of the lens driving device of the present invention.

[0030] Fig. 9 The figure is an exploded view of the lens driving device described in the present invention. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Example 1

[0032] The purpose of this embodiment is to solve the problem in the prior art that the flexible circuit board (2) and the base (1) are limited on only one side, the positioning of the flexible circuit board relies on the chip, the supporting surface is small, and the fixation of the flexible circuit board is poor.

[0033] The flexible circuit board fixing structure in this embodiment comprises a base (1) and a flexible circuit board (2) mounted on the base (1) via a multi-directional card slot positioning structure; the multi-directional card slot positioning structure comprises front and rear positioning holes (12) located on the side of the base (1) and an upper and lower step limit structure (15) arranged on the outer side of the base (1).

[0034] A side plate (11) is provided at the edge of the base (1), and front and rear positioning holes (12) are provided on the side plate (11). An annular edge is provided along the bottom of the base (1), and the annular edge has a break (13), and a baffle (14) is provided at both ends of the break (13); the lower end (141) of the baffle (14) has an extended end (142) connected to the outer side of the side plate (11), and a positioning gap (144) is left between the upper end (143) of the baffle (14) and the outer side of the side plate (11), and the positioning gap (144) and the break (13) constitute an upper and lower step limit structure (15).

[0035] A positioning block (21) is provided on the inner side of the flexible circuit board (2), one end of the positioning block (21) is connected to the inner side of the flexible circuit board (2), and the other end of the positioning block (21) is arranged in the front and rear positioning holes (12) for positioning and matching. A first positioning end (22) protruding outward is provided on both sides of the upper end of the flexible circuit board (2), and the first positioning end (22) is arranged in the positioning gap (144) for positioning and matching. A downward second positioning end (23) is provided at the middle position of the lower end of the flexible circuit board (2), and the second positioning end (23) is arranged in the fracture (13) for positioning and matching. The second positioning end (23) and the first positioning end (22) on one side respectively form a step opening structure (24), and the step opening structure (24) is positioned and matched with the upper and lower step limit structures (15).

[0036] In this embodiment, a positioning hole (12) is provided on the base (1), and the positioning hole (12) cooperates with a positioning block (21) of the flexible circuit board (2) to achieve positioning and support of the flexible circuit board (2) in the front-back direction. At the same time, an upper and lower step positioning structure (15) is provided on the outer side of the base (1), and the upper and lower step positioning structure (15) cooperates with a step opening structure (24) of the flexible circuit board (2) to achieve positioning and support of the flexible circuit board (2) in the upper and lower directions. Example 2

[0037] The purpose of this embodiment is to solve the problem in the prior art that the chip (3) and the base (1) are in contact with each other, and the chip is at risk of being broken by force during the experiment, which affects the reliability of the product.

[0038] The flexible circuit board fixing structure in this embodiment comprises a base (1), a flexible circuit board (2) and a chip (3). An avoidance groove (16) is provided on the base (1), the chip (3) is arranged in the avoidance groove (16) and does not contact the base (1), and the chip (3) is fixedly connected to the inner side surface of the flexible circuit board (2) at the side.

[0039] A plurality of connection points (31) are provided on the connection surface between the chip (3) and the flexible circuit board (2).

[0040] The number of the connection points (31) is six, and they are distributed on the chip (3) in two rows and three columns.

[0041] In this embodiment, an avoidance groove (16) is provided on the base (1), and the chip (3) is arranged in the avoidance groove (16) and does not contact the base (1), thereby effectively avoiding the problem of the product being broken by external force during the experiment.

[0042] See also Figure 8 and Fig. 9The present invention further provides a lens driving device, which has the flexible circuit board fixing structure as described in embodiments 1 and 2. In addition, the present invention further provides a photographing device, which has the lens driving device as described above.

[0043] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flexible circuit board fixing structure, characterized in that: The invention comprises a base (1), and a flexible circuit board (2) mounted on the base (1) via a multi-directional card slot positioning structure; the multi-directional card slot positioning structure comprises front and rear positioning holes (12) located on the side of the base (1), and an upper and lower step limit structure (15) arranged on the outside of the base (1); A side plate (11) is provided at the edge of the base (1), and front and rear positioning holes (12) are provided on the side plate (11); An annular edge is provided along the bottom of the base (1), the annular edge has a fracture (13), and a baffle (14) is provided at both ends of the fracture (13); the lower end (141) of the baffle (14) has an extended end (142) connected to the outer side surface of the side plate (11), and a positioning gap (144) is left between the upper end (143) of the baffle (14) and the outer side surface of the side plate (11), and the positioning gap (144) and the fracture (13) constitute an upper and lower step limit structure (15); A positioning block (21) is provided on the inner side surface of the flexible circuit board (2), one end of the positioning block (21) is connected to the inner side surface of the flexible circuit board (2), and the other end of the positioning block (21) is arranged in the front and rear positioning holes (12) for positioning and matching; A first positioning end (22) protruding outward is respectively provided on both sides of the upper end of the flexible circuit board (2), and the first positioning end (22) is arranged in a positioning gap (144) for positioning and matching; a second positioning end (23) facing downward is provided in the middle position of the lower end of the flexible circuit board (2), and the second positioning end (23) is arranged in a fracture (13) for positioning and matching; The second positioning end (23) forms a step opening structure (24) with the first positioning end (22) on one side, and the step opening structure (24) is positioned and matched with the upper and lower step limiting structures (15).

2. The flexible circuit board fixing structure according to claim 1, characterized in that: An avoidance groove (16) is provided on the base (1), the chip (3) is arranged in the avoidance groove (16) and does not contact the base (1), and the chip (3) is fixedly connected to the inner side surface of the flexible circuit board (2) at the side.

3. The flexible circuit board fixing structure according to claim 2, characterized in that: A plurality of connection points (31) are provided on the connection surface between the chip (3) and the flexible circuit board (2); the number of the connection points (31) is six and they are distributed on the chip (3) in two rows and three columns.

4. A lens driving device, characterized in that: A flexible circuit board fixing structure as claimed in claim 1, 2 or 3.

5. A photographic device, characterized in that: A lens driving device as claimed in claim 4 is provided.

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