Flat motor type variable aperture

Abstract

The invention discloses a flat motor type variable aperture which comprises an adjusting aperture mounted on a fixed seat, the adjusting aperture comprises a turntable and a plurality of blades matched with each other, strip-shaped grooves are formed in the middles of the blades, a partition plate is arranged on the surface of the turntable, a moving shaft inserted into the strip-shaped grooves is arranged on the partition plate, and the moving shaft is connected with the turntable. The moving shaft moves along the strip-shaped groove, and a light ring with a light through hole in the middle is defined by the multiple blades; a flat motor is mounted on the fixed seat and drives a turntable to rotate through a transmission mechanism, and the rotating turntable drives a moving shaft to move, so that a rotating arm rotates by taking a retention shaft as a circle center, and the end parts of the blades are shrunk or extended; the end parts of the blades are contracted or extended, so that the size of the aperture is adjusted, the aperture adjusting device has the characteristic of easiness in operation, the aperture can still be kept at the original position by utilizing the retention force of the stepping motor, continuous electrification is not needed for keeping, and the energy consumption is low.

Description

Technical Field

[0001] The present invention relates to the technical field related to adjustable aperture systems, and in particular to a flat motor-type variable aperture. Background Art

[0002] The variable aperture of the camera is an important imaging component. The light flux entering the lens of the camera module is controlled by changing the size of the aperture hole. The larger the aperture, the shallower the depth of field; the smaller the aperture, the deeper the depth of field. The continuously changing aperture can smoothly transition from light to dark and from dark to light when facing shooting scenes; the aperture cannot maintain its position for a long time in different changing positions and needs to be powered on to maintain the position, which results in high energy consumption. Summary of the invention

[0003] In order to solve the defects in the prior art, the present invention provides a flat motor-type variable aperture.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The present invention discloses a flat motor-type variable aperture, comprising a fixed seat, an adjustable aperture is installed on the fixed seat, the adjustable aperture comprises a rotating disk and a plurality of blades that cooperate with each other, a rotating arm is provided at the end of each blade, and an axial hole is provided on the rotating arm, a strip groove is provided in the middle of the blade, a partition is provided on the surface of the rotating disk, a moving shaft inserted into the strip groove is provided on the partition, and the moving shaft moves along the strip groove, a retaining shaft inserted into the axial hole is provided on the fixed seat, and a plurality of blades are enclosed to form an aperture with a light-through hole in the middle; an upper cover plate for covering the blades is installed on the fixed seat;

[0006] A flat motor is installed on the fixing seat, and the flat motor drives the turntable to rotate through the transmission mechanism. The rotating turntable drives the moving shaft to move, so that the rotating arm rotates with the fixed shaft as the center, and the end of the blade contracts or extends.

[0007] As a preferred technical solution of the present invention, the bracket fixing seat is provided with an inwardly recessed groove, and the groove is used to store the turntable, the blades and the upper cover plate.

[0008] As a preferred technical solution of the present invention, the flat motor includes two symmetrically arranged U-shaped iron cores, and each U-shaped iron core is provided with a coil, a circular magnet is arranged between the two U-shaped iron cores, and a gear is installed in the middle of the magnet, and a central shaft for inserting into the center of the gear and limiting the gear and the magnet is installed on the fixed seat.

[0009] As a preferred technical solution of the present invention, the fixing seat is provided with an installation cavity for installing the U-shaped iron core and the magnet.

[0010] As a preferred technical solution of the present invention, the transmission mechanism includes a rack disposed at the bottom of the turntable and meshing with the gear.

[0011] As a preferred technical solution of the present invention, the upper cover plate is provided with a through groove cooperating with the movable shaft.

[0012] As a preferred technical solution of the present invention, the upper cover plate is also provided with a docking hole for the retaining shaft to dock.

[0013] As a preferred technical solution of the present invention, the assembly method of the flat motor variable aperture is to first install the central axis on the fixed seat, then fix the U-shaped iron core and the coil to the fixed seat, then install the magnet and the gear, then install the turntable, and install the partition on the turntable, then install the blades on the surface of the partition, and finally install the upper cover.

[0014] The beneficial effects of the present invention are:

[0015] 1. The flat motor type variable aperture in which the adjustable aperture is composed of a rotating disk and a plurality of blades that cooperate with each other, and the plurality of blades are enclosed to form an aperture with a light hole in the middle, and a movable shaft inserted into the strip groove is provided on the partition plate, and the movable shaft moves along the strip groove, and a retaining shaft inserted into the shaft hole is provided on the fixed seat, and the flat motor drives the rotating disk to rotate through the transmission mechanism, and the rotating rotating disk drives the movable shaft to move, so that the rotating arm rotates with the retaining shaft as the center of the circle, and the ends of the blades are contracted or extended, thereby realizing the adjustment of the aperture size, and the invention has the characteristics of easy operation. The present invention can still keep the aperture in the original position by using the holding force of the stepping motor, and does not need to be continuously powered on to keep the aperture at a certain aperture, and has low energy consumption.

[0016] 2. The flat motor in this flat motor type variable aperture is two symmetrically arranged U-shaped cores, each U-shaped core is provided with a coil, a circular magnet is provided between the two U-shaped cores, and a gear is installed in the middle of the magnet, and a central axis for inserting into the center of the gear and limiting the gear and the magnet is installed on the fixed seat, and an installation cavity for installing the U-shaped core and the magnet is provided on the fixed seat, so that the motor module is assembled on the fixed seat, so that it has the characteristics of small size and is easy to install on the fixed seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1It is a structural schematic diagram of a flat motor-type variable aperture of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a flat motor-type variable aperture of the present invention;

[0020] Figure 3 It is a structural schematic diagram of a flat motor-type variable aperture of the present invention;

[0021] Figure 4 It is a structural schematic diagram of a flat motor-type variable aperture of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a flat motor-type variable aperture of the present invention;

[0023] Figure 6 It is a structural schematic diagram of a flat motor-type variable aperture of the present invention.

[0024] In the figure: 1. fixed seat; 2. adjustable aperture; 3. turntable; 4. blades; 5. rotating arm; 6. flat motor; 7. shaft hole; 8. strip groove; 9. partition; 10. moving shaft; 11. retaining shaft; 12. upper cover; 13. U-shaped iron core; 14. coil; 15. gear; 16. center axis; 17. installation cavity; 18. rack; 19. through groove; 20. docking hole; 21. groove. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the present invention is a flat motor-type variable aperture, comprising a fixed seat 1, on which an adjustable aperture 2 is installed, the adjustable aperture 2 comprises a rotating disk 3 and a plurality of blades 4 that cooperate with each other, a rotating arm 5 is provided at the end of each blade 4, and an axial hole 7 is provided on the rotating arm 5, a strip groove 8 is provided in the middle of the blade 4, a partition plate 9 is provided on the surface of the rotating disk 2, a moving shaft 10 inserted into the strip groove 8 is provided on the partition plate 9, and the moving shaft 10 moves along the strip groove 8, a retaining shaft 11 is provided on the fixed seat 1 and inserted into the axial hole 7, and a plurality of blades 4 are enclosed to form an aperture with a light-through hole in the middle; an upper cover plate 12 for covering the blades 4 is installed on the fixed seat 1;

[0027] A flat motor 6 is installed on the fixing seat 1, and the flat motor 6 drives the turntable 2 to rotate through a transmission mechanism. The rotating turntable 2 drives the moving shaft 10 to move, so that the rotating arm 5 rotates with the fixing shaft 11 as the center, and the end of the blade 4 contracts or extends.

[0028] The adjustable aperture 2 in the present invention is composed of a turntable 3 and a plurality of blades 4 that cooperate with each other, and the plurality of blades 4 enclose an aperture with a light hole in the middle, and a movable shaft 10 is provided on the partition plate 9 and inserted into the strip groove 8, and the movable shaft 10 moves along the strip groove 8, and a retaining shaft 11 is provided on the fixed seat 1 and inserted into the shaft hole 7, and the flat motor 6 drives the turntable 3 to rotate through the transmission mechanism, and the rotating turntable 3 drives the movable shaft 10 to move, so that the rotating arm 5 rotates with the retaining shaft 11 as the center, and the end of the blade 4 contracts or extends, thereby realizing the adjustment of the aperture size, and has the characteristics of easy operation. The present invention can still keep the aperture in the original position by using the holding force of the stepping motor, and does not need to be continuously powered on to keep the aperture at a certain aperture, and has low energy consumption.

[0029] Among them, the fixing seat 1 is provided with an inwardly recessed groove 21, and the groove 21 is used to store the turntable 2, the blades 4 and the upper cover plate 12, so that the turntable 2, the blades 4 and the upper cover plate 12 are stored inside the fixing seat, so that the whole has a better volume and a better appearance.

[0030] The flat motor 6 includes two symmetrically arranged U-shaped cores 13, and each U-shaped core is sleeved with a coil 14, a circular magnet 22 is arranged between the two U-shaped cores 13, and a gear 15 is installed in the middle of the magnet 22, and a central shaft 16 for inserting into the center of the gear 15 and limiting the gear 15 and the magnet 22 is installed on the fixing seat 1. The fixing seat 1 is provided with an installation cavity 17 for installing the U-shaped core 13 and the magnet 22. In this way, the motor module is assembled on the fixing seat 1, so that it has the characteristics of small size and is easy to install on the fixing seat 1.

[0031] The transmission mechanism includes a rack 18 disposed at the bottom of the turntable 2 and meshing with the gear 15, which has the characteristic of stable transmission. The upper cover plate 12 is provided with a through slot 19 that cooperates with the moving shaft 10, and does not cause motion interference.

[0032] The upper cover plate 12 is also provided with a docking hole 20 for the retaining shaft 11 to dock with.

[0033] The assembly method of the flat motor type variable aperture is to first install the central axis 16 on the fixed base 1, then fix the U-shaped iron core 13 and the coil 14 to the fixed base 1, then install the magnet 22 and the gear 15, then install the turntable 3, and install the partition 9 on the turntable 3, then install the blade 4 on the surface of the partition 9, and finally install the upper cover 12, which has the characteristic of easy assembly.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flat motor-type variable aperture, characterized in that: The invention comprises a fixed seat (1), on which an adjustable aperture (2) is mounted, the adjustable aperture (2) comprising a rotating disk (3) and a plurality of blades (4) cooperating with each other, a rotating arm (5) being provided at the end of each blade (4), and an axial hole (7) being provided on the rotating arm (5), and a strip groove (8) being provided in the middle of the blade (4), a partition (9) being provided on the surface of the rotating disk (2), and a movable shaft (10) being inserted into the strip groove (8), and the movable shaft (10) moving along the strip groove (8), the fixed seat (1) being provided with a retaining shaft (11) being inserted into the axial hole (7), and an aperture with a light-through hole being enclosed by the plurality of blades (4); an upper cover plate (12) for covering the blades (4) being mounted on the fixed seat (1); A flat motor (6) is mounted on the fixed seat (1), and the flat motor (6) drives the turntable (2) to rotate via a transmission mechanism, and the rotating turntable (2) drives the moving shaft (10) to move, so that the rotating arm (5) rotates with the fixed shaft (11) as the center, and the end of the blade (4) contracts or extends.

2. The flat motor-type variable aperture according to claim 1, characterized in that: The fixing seat (1) is provided with an inwardly recessed groove (21), and the groove (21) is used to accommodate the rotating disk (2), the blades (4) and the upper cover plate (12).

3. The flat motor-type variable aperture according to claim 2, characterized in that: The flat motor (6) comprises two symmetrically arranged U-shaped iron cores (13), each of which is sleeved with a coil (14), a circular magnet (22) is arranged between the two U-shaped iron cores (13), and a gear (15) is installed in the middle of the magnet (22), and a central shaft (16) is installed on the fixing seat (1) for inserting into the center of the gear (15) and limiting the gear (15) and the magnet (22).

4. The flat motor-type variable aperture according to claim 2, characterized in that: The fixing seat (1) is provided with an installation cavity (17) for installing the U-shaped iron core (13) and the magnet (22).

5. The flat motor-type variable aperture according to claim 2, characterized in that: The transmission mechanism comprises a rack (18) which is arranged at the bottom of the rotating disk (2) and meshes with the gear (15).

6. The flat motor-type variable aperture according to claim 1, characterized in that: The upper cover plate (12) is provided with a through slot (19) that matches the movable shaft (10).

7. The flat motor-type variable aperture according to claim 1, characterized in that: The upper cover plate (12) is also provided with a docking hole (20) for docking the retaining shaft (11).

8. A flat motor-type variable aperture according to any one of claims 1 to 7, characterized in that: The assembly method of the flat motor type variable aperture is as follows: firstly, the central axis (16) is mounted on the fixing seat (1), then the U-shaped iron core (13) and the coil (14) are fixed to the fixing seat (1), then the magnet (22) and the gear (15) are installed, then the turntable (3) is installed, and the partition (9) is installed on the turntable (3), and then the blade (4) is installed on the surface of the partition (9), and finally the upper cover (12) is installed.

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