Variable aperture adjusting device

Abstract

The utility model relates to the technical field of electronic equipment, in particular to a variable aperture adjusting device which comprises a baffle, a limiting ring, a blade, a soma sheet and a carrier which are sequentially installed from top to bottom, and the carrier comprises a first carrier and a second carrier arranged on the outer side of the first carrier; the top of the first carrier and the top of the second carrier are connected with a driving assembly, and the driving assembly comprises a first driving piece and a second driving piece; a limiting structure is arranged between the first carrier and the second carrier and comprises a limiting group which is arranged between the first carrier and the second carrier and is used for limiting at least three points. The utility model has the advantages that compared with an electromagnetic driving mode, the two SMA wires are adopted, so that the heating value and the power consumption can be reduced, and the cost is reduced. And the internal space of the VA, especially the space in the height direction, can be effectively reduced. The limiting mechanism cancels the limiting mode of all balls or rolling shafts, and adopts a limiting piece or a combination mode of the limiting piece and a rolling piece, so that the processing technology is simplified, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a variable aperture adjustment device. Background Art

[0002] With the development of electronic technology, users of electronic devices (such as smart phones or digital cameras) now have higher and higher requirements for photo or video recording functions, and the demand for miniature camera modules is also increasing. For the camera aperture, in places with strong light, the camera can obtain a deeper depth of field and a sharper picture by reducing the aperture, and in places with insufficient light, the amount of light entering can be increased by increasing the aperture, so that a pure picture with higher exposure and lower noise can be obtained. In existing products, the camera is mostly driven by electromagnetic drive, which occupies a large space and generates more heat. The limit structure is mostly a ball-type limit structure, which is complicated in process and difficult to assemble. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a variable aperture adjustment device, which solves the problems of the single driving mode and complex process of the limiting structure of the prior electronic products.

[0004] To achieve the above object, the utility model is implemented by the following technical solutions: a variable aperture adjustment device, the device includes a baffle, a limit ring, a blade, a soma sheet and a carrier installed in sequence from top to bottom, the carrier includes a first carrier and a second carrier arranged outside the first carrier;

[0005] A driving assembly is connected to the top of the first carrier and the second carrier, and the driving assembly includes a first driving member and a second driving member, wherein the first ends of the first driving member and the second driving member are fixed to the first carrier or the second carrier, and the second ends of the first driving member and the second driving member are correspondingly fixed to the second carrier or the first carrier;

[0006] A limiting structure is arranged between the first carrier and the second carrier, and the limiting structure comprises a limiting group for limiting at least three points arranged between the first carrier and the second carrier.

[0007] Preferably, the limiting group includes two limiting plates and a rolling element which are arranged at three points equidistantly between the first carrier and the second carrier; wherein the two limiting plates are arranged on the inner side wall of the second carrier and are in frictional contact with the outer side surface of the first carrier.

[0008] Preferably, the rolling element includes balls or rollers; the balls are arranged along the Z direction; and the rollers are arranged along the Z direction.

[0009] Preferably, the limiting group includes three limiting plates which are arranged at three points equidistantly between the first carrier and the second carrier; wherein each of the limiting plates is arranged on the inner side wall of the second carrier and is in frictional contact with the outer side surface of the first carrier.

[0010] Preferably, the first driving member and the second driving member both comprise a memory alloy wire, and two ends of the memory alloy wire are respectively provided with a first clamping jaw and a second clamping jaw;

[0011] The first clamping jaw is fixed on the first carrier, and the second clamping jaw is fixed on the second carrier.

[0012] Preferably, the connection point between the first clamping jaw of the first driving member and the second carrier forms a first connection portion;

[0013] The connection point between the second clamping claw of the first driving member and the first carrier forms a second connection portion;

[0014] The connection point between the first clamping claw of the second driving member and the second carrier forms a third connection portion;

[0015] The connection point between the second clamping claw of the second driving member and the first carrier forms a fourth connection portion.

[0016] Preferably, the device also includes a circuit board, which is fixed to the bottom of the second carrier, and the circuit board includes an arc-shaped plate, and the arc-shaped plate includes a first power connection end and a second power connection end, the first power connection end is provided with a grounding PIN pin and a first power connection PIN pin, and the second power connection end is provided with a second power connection PIN pin and a third power connection PIN pin; one end of the arc-shaped plate is provided with a connecting end.

[0017] Preferably, the connecting end comprises a spring sheet or a contact end formed by bending one end of the arc-shaped plate.

[0018] Preferably, the limiting ring is fixedly connected to the second carrier, a welding sheet is provided on the top of the second carrier, and the limiting ring is fixed to the second carrier via the welding sheet.

[0019] Preferably, a limiting hole and a strip groove are provided at the tail end of the blade; a plurality of first fixing columns and second fixing columns are respectively provided on the top circumference of the first carrier and the second carrier, the first fixing columns are inserted into the limiting hole, and the second fixing columns are movably connected to the strip groove;

[0020] When the first carrier rotates, the second fixing column moves in the strip groove to drive the blade to rotate.

[0021] Preferably, the device further comprises a magnetic attraction component, which comprises a magnet embedded in the interior of the first carrier, and the magnet and the limiting plate attract each other; a metal reinforcement is provided at the bottom of the second carrier, and the magnet and the metal reinforcement attract each other. Beneficial Effects

[0022] By using a variable aperture adjustment device provided by the utility model, the use of two SMA wires can reduce heat generation and power consumption, and reduce costs compared to the electromagnetic drive method. It can also effectively reduce the internal space of the VA, especially the space in the height direction. The limiting mechanism cancels the limiting method of all balls or rollers, and adopts a limiting piece or a combination of a limiting piece and a rolling piece. This simplifies the processing technology and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the drive assembly of the utility model;

[0025] Figure 3 This is a schematic diagram of the circuit board structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure between the drive assembly and the carrier of the utility model;

[0027] Figure 5 It is a schematic diagram of the bending structure of the connecting end of the utility model;

[0028] Figure 6 It is a schematic diagram of the spring piece structure of the connection end of the utility model;

[0029] Figure 7 This is a schematic diagram of the second form structure of the blade of the utility model;

[0030] Figure 8 This is a schematic diagram of the second form structure of the blade of the utility model;

[0031] Fig. 9 This is a schematic diagram of the structure in which the limit group of the utility model is arranged at four points with equal distances;

[0032] Fig.10 It is a schematic diagram of the limit block fixing the limit piece of the utility model;

[0033] Fig.11 It is the overall appearance diagram of the utility model;

[0034] Fig.12 It is a schematic diagram of the structure of the limiting piece of the utility model.

[0035] In the figure: 1, baffle, 2, limiting ring, 3, blade, 4, soma sheet, 5, driving assembly, 51, memory alloy wire, 52, first clamping jaw, 53, second clamping jaw, 6, first carrier, 7a, limiting plate, 7b, rolling element, 7c, limiting block, 8, second carrier, 9, circuit board, 91, connecting end, 92, grounding PIN pin, 93, first power connection PIN pin, 94, second power connection PIN pin, 95, third power connection PIN pin, 10a, first connecting part, 10b, second connecting part, 10c, third connecting part, 10d, fourth connecting part, 11, limiting hole, 12, first fixing column, 13, strip groove, 14, second fixing column, 15, magnet. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. As long as the effect of the utility model can be exerted, various changes can be made to the implementation scheme.

[0037] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0038] Reference Figure 1-12 The variable aperture adjustment device of this embodiment will be described.

[0039] like Figure 1 As shown, the device includes a baffle 1, a limit ring 2, a blade 3, a soma sheet 4 and a carrier installed in sequence from top to bottom, and the carrier includes a first carrier 6 and a second carrier 8 arranged outside the first carrier 6. The first carrier 6 and the second carrier 8 are connected by FPCB or spring soft connection.

[0040] In this embodiment, the baffle 1 is located at the top of the device; the limiting ring 2 is arranged between the baffle 1 and the blade 3 and fixed on the second carrier 8; a welding piece is arranged on the top of the second carrier 8, and the limiting ring 2 is fixed on the welding piece. This connection method improves the connection strength and can improve the problem of the limiting structure falling off.

[0041] like Figure 7As shown, the blade 3 is fixed on the carrier. The specific installation method is: a limiting hole 11 and a strip groove 13 are set at the tail end of the blade 3; a plurality of first fixing columns 12 and second fixing columns 14 are respectively set in the circumferential direction of the top of the first carrier 6 and the second carrier 8. The first fixing column 12 is inserted into the limiting hole 11, so that the blade 3 can rotate with the first fixing column 12 as the center of the circle. The second fixing column 14 is movably connected in the strip groove 13; wherein, when the first carrier 6 rotates, the second fixing column 14 moves in the strip groove 13.

[0042] In another embodiment, if Figure 8 As shown, the blade 3 is a two-stage design, including a blade portion and a petiole portion. The blade portion is a two-semicircular structure. The petiole portion is provided with a limiting hole 11 and a strip groove 13, and the first fixing column 12 is inserted into the limiting hole 11, so that the blade 3 can rotate with the first fixing column 12 as the center of the circle. The second fixing column 14 is movably connected in the strip groove 13; wherein, when the first carrier 6 rotates, the second fixing column 14 moves in the strip groove 13.

[0043] The soma sheet 4 is specifically arranged between the first carrier 6 and the blades 3 and fixed on the first carrier 6; the function of the soma sheet 4 is to provide the maximum circle of the aperture.

[0044] The first carrier 6 and the second carrier 8 are connected to the top of the driving assembly 5, and the driving assembly 5 includes a first driving member and a second driving member. The first driving member and the second driving member are SMA wires. In this embodiment, two SMA wires are used. The advantage is that the driving force is large, and compared with the electromagnetic driving method, the heat generation and power consumption can be reduced, and the cost can be reduced. It can also effectively reduce the internal space of the VA, especially the space in the height direction.

[0045] The first ends of the first driving member and the second driving member are fixed to the first carrier 6 or the second carrier 8, and the second ends of the first driving member and the second driving member are correspondingly fixed to the second carrier 8 or the first carrier 6;

[0046] The first driving member and the second driving member both include a memory alloy wire 51, and the two ends of the memory alloy wire 51 are respectively provided with a first clamping jaw 52 and a second clamping jaw 53. The first driving member and the second driving member have two installation modes in specific implementation, namely: the first clamping jaw 52 is fixed on the first carrier 6, and the second clamping jaw 53 is fixed on the second carrier 8; or the first clamping jaw 52 is fixed on the second carrier 8, and the second clamping jaw 53 is fixed on the first carrier 6. In this embodiment, the implementation mode in which the first clamping jaw 52 is fixed on the first carrier 6 and the second clamping jaw 53 is fixed on the second carrier 8 is adopted.

[0047] The connection point between the first jaw 52 of the first driving member and the second carrier 8 forms a first connection portion 10a; the connection point between the second jaw 53 of the first driving member and the first carrier 6 forms a second connection portion 10b; the connection point between the first jaw 52 of the second driving member and the second carrier 8 forms a third connection portion 10c; the connection point between the second jaw 53 of the second driving member and the first carrier 6 forms a fourth connection portion 10d.

[0048] The device also includes a circuit board 9, which is fixed to the bottom of the second carrier 8. The circuit board 9 includes an arc-shaped plate, which includes a first power connection end and a second power connection end. The first power connection end is provided with a first power connection PIN pin 92 and a grounding PIN pin 93, and the second power connection end is provided with a second power connection PIN pin 94 and a third power connection PIN pin 95; one end of the arc-shaped plate is provided with a connection end 91. The connection end 91 is connected to the metal reinforcement in the second carrier 8, and finally the driving component is powered by the metal reinforcement.

[0049] The connecting end 91 includes a spring sheet or a contact end formed by bending one end of an arc-shaped plate.

[0050] The electrical signals of the circuit board 9 and the first driving element and the second driving element are divided into two groups AB. Among them:

[0051] The electrical signals of group A are as follows: the second power connection PIN pin 94 transmits the electrical signal to the connection end 91, the connection end 91 transmits the electrical signal to the first connection part 10a through the metal reinforcement, the first connection part 10a transmits the electrical signal to the second connection part 10b through the memory alloy wire 51, and finally transmits the electrical signal to the first power connection PIN pin 93 through the metal reinforcement;

[0052] The electrical signals of group B are as follows: the second power connection PIN pin 94 transmits the electrical signal to the connection end 91, the connection end 91 transmits the electrical signal to the third connection part 10c through the metal reinforcement, the third connection part 10c transmits the electrical signal to the fourth connection part 10d through the memory alloy wire 51, and finally transmits the electrical signal to the third power connection PIN pin 95 through the metal reinforcement.

[0053] A limiting structure is arranged between the first carrier 6 and the second carrier 8, and the limiting structure includes at least three limiting groups equidistantly arranged between the first carrier 6 and the second carrier 8; or includes a second limiting group equidistantly arranged between the first carrier 6 and the second carrier 8 at four points.

[0054] In one embodiment, if Figure 7 As shown, the limiting group includes two limiting plates 7a and a rolling element 7b which are equidistantly arranged at three points between the first carrier 6 and the second carrier 8; wherein the two limiting plates 7a are arranged on the inner side wall of the second carrier 8 and are in frictional contact with the outer side surface of the first carrier 6.

[0055] The rolling element 7b includes balls or rollers; the balls are arranged along the Z direction; and the rollers are arranged along the Z direction.

[0056] In another embodiment, the limiting group includes three limiting plates 7a which are equidistantly arranged at three points between the first carrier 6 and the second carrier 8; wherein each limiting plate 7a is arranged on the inner side wall of the second carrier 8 and is in frictional contact with the outer side surface of the first carrier 6.

[0057] In other embodiments, Fig. 9 As shown, the limiting group includes four limiting pieces 7a arranged at four points equidistantly between the first carrier 6 and the second carrier 8; wherein each limiting piece 7a is arranged on the inner side wall of the second carrier 8 and is in frictional contact with the outer side surface of the first carrier 6. Further, as Fig.10 As shown, limiting blocks 7c for fixing the limiting pieces 7a are provided on both sides of each limiting piece 7a; the two limiting blocks 7c are fixed on the first carrier 6 and the second carrier 8 respectively.

[0058] The limiting mechanism of this embodiment cancels the limiting method of all balls or rollers, and forms a combination of limiting pieces 7a and rolling elements 7b. This simplifies the processing technology and saves costs. At the same time, the matching position is in line contact, which can effectively reduce the internal tilt of the mover, ensure the consistency of the mover during movement, and improve the performance yield. At the same time, through one or more ball or roller structures, the internal clearance of the mover can be adjusted. Compared with the four-ball structure, it reduces variables and is easier to optimize performance.

[0059] The device also includes a magnetic attraction component, which includes a magnet 15. The magnet 15 is embedded in the interior of the first carrier 6. The magnet 15 and the limiting plate 7a are magnetically attracted to each other to complete the magnetic attraction in the XY direction. A metal reinforcement is provided at the bottom of the second carrier 8. The magnet 15 and the metal reinforcement are magnetically attracted to each other to complete the magnetic attraction in the Z direction.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable aperture adjustment device, comprising a baffle (1), a limit ring (2), a blade (3), a soma sheet (4) and a carrier which are sequentially installed from top to bottom, characterized in that: The carrier comprises a first carrier (6) and a second carrier (8) arranged outside the first carrier (6); A driving assembly (5) is connected to the top of the first carrier (6) and the second carrier (8), and the driving assembly (5) comprises a first driving member and a second driving member, wherein the first ends of the first driving member and the second driving member are fixed to the first carrier (6) or the second carrier (8), and the second ends of the first driving member and the second driving member are correspondingly fixed to the second carrier (8) or the first carrier (6); A limiting structure is arranged between the first carrier (6) and the second carrier (8), and the limiting structure comprises a limiting group for limiting at least three points arranged between the first carrier (6) and the second carrier (8).

2. A variable aperture adjustment device according to claim 1, characterized in that: The limiting group comprises two limiting plates (7a) and a rolling element (7b) which are arranged at three points equidistantly between the first carrier (6) and the second carrier (8); wherein the two limiting plates (7a) are arranged on the inner side wall of the second carrier (8) and are in frictional contact with the outer side surface of the first carrier (6).

3. A variable aperture adjustment device according to claim 2, characterized in that: The rolling element (7b) comprises a ball or a roller; The balls are arranged along the Z direction; The roller is arranged along the Z direction.

4. The variable aperture adjustment device according to claim 1, characterized in that: The limiting group comprises three limiting pieces (7a) which are arranged at three points equidistantly between the first carrier (6) and the second carrier (8); wherein each limiting piece (7a) is arranged on the inner side wall of the second carrier (8) and is in frictional contact with the outer side surface of the first carrier (6).

5. The variable aperture adjustment device according to claim 1, characterized in that: The first driving member and the second driving member both comprise a memory alloy wire (51), and two ends of the memory alloy wire (51) are respectively provided with a first clamping jaw (52) and a second clamping jaw (53); The first clamping jaw (52) is fixed on the first carrier (6), and the second clamping jaw (53) is fixed on the second carrier (8).

6. The variable aperture adjustment device according to claim 5, characterized in that: The connection point between the first clamping claw (52) of the first driving member and the second carrier (8) forms a first connection portion (10a); The connection point between the second clamping claw (53) of the first driving member and the first carrier (6) forms a second connection portion (10b); The connection point between the first clamping claw (52) of the second driving member and the second carrier (8) forms a third connection portion (10c); The connection point between the second clamping claw (53) of the second driving member and the first carrier (6) forms a fourth connection portion (10d).

7. The variable aperture adjustment device according to claim 1, characterized in that: The device further comprises a circuit board (9), the circuit board (9) being fixed to the bottom of the second carrier (8), the circuit board (9) comprising an arc-shaped plate, the arc-shaped plate comprising a first power connection end and a second power connection end, the first power connection end being provided with a grounding PIN pin (92) and a first power connection PIN pin (93), the second power connection end being provided with a second power connection PIN pin (94) and a third power connection PIN pin (95); and one end of the arc-shaped plate being provided with a connection end (91).

8. The variable aperture adjustment device according to claim 7, characterized in that: The connecting end (91) comprises a spring sheet or a contact end formed by bending one end of the arc-shaped plate.

9. The variable aperture adjustment device according to claim 1, characterized in that: The limiting ring (2) is fixedly connected to the second carrier (8); a welding sheet is provided on the top of the second carrier (8); and the limiting ring (2) is fixed to the second carrier (8) via the welding sheet.

10. The variable aperture adjustment device according to claim 1, characterized in that: A limiting hole (11) and a strip groove (13) are arranged at the tail end of the blade (3); a plurality of first fixing columns (12) and second fixing columns (14) are arranged circumferentially on the top of the first carrier (6) and the second carrier (8), respectively, the first fixing columns (12) are inserted into the limiting hole (11), and the second fixing columns (14) are movably connected to the strip groove (13); Wherein, when the first carrier (6) rotates, the second fixing column (14) moves in the strip groove (13), driving the blade (3) to rotate.

11. The variable aperture adjustment device according to claim 1, characterized in that: The device further comprises a magnetic attraction component, the magnetic attraction component comprising a magnet (15) embedded in the interior of the first carrier (6), the magnet (15) and the limiting plate (7a) mutually attracting each other; a metal reinforcement is provided at the bottom of the second carrier (8), the magnet (15) and the metal reinforcement mutually magnetically attracting each other.

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