A new magnetic valve driven iris diaphragm

Abstract

The utility model discloses a novel magnetic valve drive type iris, it includes lower base, upper cover, vane group, drive gear, movable ring, vane group, drive gear, movable ring are installed respectively in the shell containing cavity between lower base and upper cover, and vane group includes a plurality of iris vane, and each iris vane is driven by movable ring respectively, and the outer gear portion is provided to movable ring outer end edge portion, and drive gear is engaged with outer gear portion, and the U -shaped iron core, bobbin, coil winding of U -shaped iron core electromagnetic valve assembly are embedded in the shell containing cavity in movable ring side, and U -shaped iron core electromagnetic valve assembly includes U -shaped core, bobbin, coil winding, and the novel magnetic valve drive type iris still includes movable magnet, and drive gear is plastic member, and movable magnet and drive gear injection mould into one -piece structure, and the magnetic pole of U -shaped core is close to movable magnet. Through above -mentioned structural design, the utility model has the advantages of novel design, compact structure, small overall volume and good mute effect.

Description

Technical Field

[0001] This utility model relates to the field of aperture technology, and in particular to a novel magnetic valve driven iris aperture. Background Technology

[0002] Aperture is a device used to control how much light passes through the lens and into the camera's sensor. amount of light The device; for a lens that has already been manufactured, it is impossible to arbitrarily change the diameter of the lens, but it is possible to add a device inside the lens. polygon Alternatively, a circular aperture stop with a variable area can be used to control the lens. Light transmittance This device is called an aperture.

[0003] Among them, the Chinese utility model patent with patent number ZL202320133625.X and patent name: "An Iridescent Aperture", specifically discloses the following technical solution: an iridescent aperture, including a shell, a motor, a dial, a transmission mechanism, and a blade assembly. The motor is mounted on the shell, the dial extends into the inner cavity of the shell and is rotatably mounted on the shell, and the motor is connected to the dial through the transmission mechanism to drive the dial to rotate; the dial is provided with multiple levers, the shell is provided with multiple fixed pins, the blade assembly has multiple blades, each blade is rotatably mounted on a fixed pin, and each blade is provided with a guide slot, and each lever extends into the guide slot of one blade; the transmission mechanism includes an output gear, the dial is provided with external teeth, and the output gear is mounted on the output shaft of the motor; a cover plate is fastened to the shell to restrict the dial as a whole between the cover plate and the shell.

[0004] In the process of adjusting the light transmission of the aforementioned iridescent aperture, after the motor is powered on, the gear transmission dial rotates, the rotation of the dial drives the rotation of the lever, and the rotation of the lever moves the blades, so that each blade rotates around the fixed pin on which it is installed, thereby changing the size of the aperture and adjusting the light transmission.

[0005] However, the aforementioned iridescent aperture still has the following drawbacks: the rotation of the dial is powered by a motor, which drives the dial to rotate through a gear transmission pair consisting of an output gear and the external teeth of the dial; since the motor is exposed and mounted on the outside of the housing, it significantly increases the overall size of the iridescent aperture, resulting in a large overall size and poor structural compactness; furthermore, the motor generates considerable noise during operation, leading to poor noise reduction performance of the overall iridescent aperture. Utility Model Content

[0006] The purpose of this invention is to provide a novel magnetic valve driven iris aperture to address the shortcomings of existing technologies. This novel magnetic valve driven iris aperture has a novel design, a compact structure, a small overall footprint, and good noise reduction.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0008] A novel magnetic valve-driven iris aperture includes a lower base, an upper cover plate, a blade assembly, a drive gear, and a circular movable ring. The upper cover plate is installed at the upper end of the lower base, and a housing cavity is formed between the lower base and the upper cover plate. The blade assembly, drive gear, and movable ring are respectively installed in the housing cavity. The blade assembly includes several aperture blades, and each aperture blade is driven by the movable ring.

[0009] An external gear is provided on the outer edge of the movable ring, and the drive gear meshes with the external gear of the movable ring;

[0010] A U-shaped solenoid valve assembly is embedded in the cavity of the outer casing next to the movable ring. The U-shaped solenoid valve assembly is fixed between the lower base and the upper cover plate. The U-shaped solenoid valve assembly includes a U-shaped iron core, a winding shaft fitted into the U-shaped iron core, and a coil winding wrapped around the outside of the winding shaft.

[0011] The new type of magnetic valve driven iridescent aperture also includes a movable magnet, a drive gear made of plastic, and the movable magnet and drive gear are injection molded into a single structure; the U-shaped iron core is located next to the movable magnet, and the magnetic poles of the U-shaped iron core are close to the movable magnet.

[0012] The blade group is located at the lower end of the movable ring, and each aperture blade is provided with an upwardly protruding upper pin; the movable ring is provided with pin holes corresponding to the upper pins of each aperture blade, and the upper pins of each aperture blade are respectively inserted into the corresponding pin holes.

[0013] Each aperture blade is also provided with a downward protruding lower pin, and the lower pins of the aperture blades are arranged at intervals with the upper pins; the lower base is provided with long slots corresponding to the lower pins of each aperture blade, and the lower pins of each aperture blade are respectively inserted into the corresponding long slots.

[0014] The upper cover plate has a vertically penetrating, circular through hole, and the upper surface of the movable ring has an upwardly protruding circular protrusion that extends into the through hole of the upper cover plate.

[0015] The outer shell cavity contains two U-shaped solenoid valve assemblies arranged at intervals, with the magnetic poles of the U-shaped iron core of each U-shaped solenoid valve assembly close to the movable magnet.

[0016] The lower surface of the lower base is equipped with an FPC circuit board, and the coil winding of the U-shaped solenoid valve assembly is electrically connected to the FPC circuit board through metal pins.

[0017] The lower base is fastened to the upper cover plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0019] 1. The U-iron solenoid valve assembly of this utility model is installed in the housing cavity between the lower base and the upper cover plate, and the U-iron solenoid valve assembly is fixed between the lower base and the upper cover plate. That is, the driving component for driving the rotating movable ring of this utility model adopts an internal structure design. Compared with the exposed motor structure of the prior art, this utility model has better structural compactness and smaller overall size.

[0020] 2. This utility model uses a magnetic valve drive structure to drive the movable ring to rotate. This structure design can effectively avoid noise when the motor rotor rotates. Compared with the prior art, this utility model has better noise reduction performance.

[0021] 3. Therefore, the novel magnetic valve driven iridescent aperture of this utility model has the advantages of novel design, compact structure, small overall volume and good noise reduction. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 for Figure 1 A schematic diagram of its breakdown.

[0025] Figure 3 This is a structural schematic diagram from another perspective of the present invention.

[0026] Figure 4 This is a partial structural schematic diagram of the present invention.

[0027] exist Figures 1 to 4 This includes:

[0028] 1-Lower base; 11-Long slot; 2-Upper cover plate; 21-Cover plate through hole; 3-Blade assembly; 31-Aperture blade; 32-Upper pin; 33-Lower pin; 4-Drive gear; 5-Moving ring; 51-External gear part; 52-Pin hole; 53-Circular protrusion; 6-U-shaped iron solenoid valve assembly; 61-U-shaped iron core; 611-Magnetic pole; 62-Winding shaft; 63-Coil winding; 7-Moving magnet; 8-FPC circuit board; 9-Metal PIN pin. Detailed Implementation

[0029] The present invention will now be described in conjunction with specific embodiments.

[0030] Example 1, as Figures 1 to 4 As shown, a novel magnetic valve-driven iris aperture includes a lower base 1, an upper cover plate 2, a blade assembly 3, a drive gear 4, and a circular movable ring 5. The upper cover plate 2 is installed at the upper end of the lower base 1, and a housing cavity (not shown in the figure) is formed between the lower base 1 and the upper cover plate 2. The blade assembly 3, the drive gear 4, and the movable ring 5 are respectively installed in the housing cavity. The blade assembly 3 includes a plurality of aperture blades 31, and each aperture blade 31 is driven by the movable ring 5.

[0031] It should be explained that the lower base 1 and the upper cover 2 are fastened together; of course, the above fastening assembly method does not constitute a limitation on this embodiment, that is, the lower base 1 and the upper cover 2 in this embodiment can also be assembled and connected by screws.

[0032] Among them, such as Figure 2 and Figure 4 As shown, an external gear portion 51 is provided on the outer edge of the movable ring 5, and the drive gear 4 meshes with the external gear portion 51 of the movable ring 5; it should be explained that the external gear portion 51 and the movable ring 5 are an integral structure.

[0033] Furthermore, such as Figure 2 and Figure 4 As shown, a U-shaped iron solenoid valve assembly 6 is embedded in the cavity of the outer casing next to the movable ring 5. The U-shaped iron solenoid valve assembly 6 is fixed between the lower base 1 and the upper cover plate 2. The U-shaped iron solenoid valve assembly 6 includes a U-shaped iron core 61, a winding shaft 62 fitted on the U-shaped iron core 61, and a coil winding 63 wrapped around the winding shaft 62.

[0034] Furthermore, such as Figure 2 and Figure 4As shown, this novel magnetic valve-driven iris ring also includes a movable magnet 7, a driving gear 4 made of plastic, and the movable magnet 7 and the driving gear 4 are injection molded into a single structure; a U-shaped iron core 61 is located beside the movable magnet 7, and the magnetic poles 611 of the U-shaped iron core 61 are close to the movable magnet 7. It should be explained that the magnetic rotor composed of the driving gear 4 and the movable magnet 7 is axially limited between the lower base 1 and the upper cover plate 2. The upper and lower ends of the magnetic rotor are also provided with shaft portions (not shown in the figure). The lower base 1 and the upper cover plate 2 are respectively provided with shaft holes (not shown in the figure) corresponding to the shaft portions of the magnetic rotor. Each shaft portion of the magnetic rotor is rotatably installed in the shaft hole on the corresponding side.

[0035] In the operation of the novel magnetic valve driven iris aperture in this embodiment, the rotational power of the movable ring 5 comes from the U-shaped iron solenoid valve assembly 6. When the U-shaped iron solenoid valve assembly 6 drives the movable ring 5 to rotate, the coil winding 63 of the U-shaped iron solenoid valve assembly 6 is energized and generates a magnetic field. This magnetic field acts on the U-shaped iron core 61 and magnetizes the U-shaped iron core 61. The U-shaped iron core 61 after being magnetized drives the movable magnet 7 to rotate through the repulsive or attractive force between its magnetic pole 611 and the movable magnet 7. The rotating movable magnet 7 drives the drive gear 4 to rotate synchronously, and the rotating drive gear 4 drives the movable ring 5 to rotate through the external gear part 51. The rotating movable ring 5 drives each blade aperture to rotate to adjust the size of the aperture aperture, thereby realizing the adjustment of the light transmission.

[0036] It should be emphasized that the U-iron solenoid valve assembly 6 of this embodiment is installed in the housing cavity between the lower base 1 and the upper cover plate 2, and the U-iron solenoid valve assembly 6 is fixed between the lower base 1 and the upper cover plate 2. That is, the driving component for driving the rotating movable ring 5 of this embodiment adopts an internal structure design. Compared with the exposed motor structure of the prior art, this embodiment has better structural compactness and smaller overall volume.

[0037] It should be further emphasized that in this embodiment, the movable ring 5 is driven to rotate by a magnetic valve drive structure. This structure design can effectively avoid noise when the motor rotor rotates. Compared with the prior art, the novel magnetic valve driven iridescent ring in this embodiment has better noise reduction performance.

[0038] In summary, the novel magnetic valve-driven iridescent aperture of this embodiment has the advantages of novel design, compact structure, small overall volume, and quiet operation through the above structural design.

[0039] Example 2, as Figures 1 to 4As shown, the difference between this embodiment 2 and embodiment 1 is that: the blade group 3 is located at the lower end of the movable ring 5, and each aperture blade 31 is provided with an upwardly protruding upper pin 32; the movable ring 5 is provided with pin holes 52 corresponding to the upper pin 32 of each aperture blade 31, and the upper pin 32 of each aperture blade 31 is respectively inserted into the corresponding pin hole 52.

[0040] Each aperture blade 31 is also provided with a downwardly protruding lower pin 33, and the lower pin 33 of the aperture blade 31 is arranged at intervals with the upper pin 32; the lower base 1 is provided with a long groove 11 corresponding to the lower pin 33 of each aperture blade 31, and the lower pin 33 of each aperture blade 31 is inserted into the corresponding long groove 11.

[0041] During the process of the movable ring 5 driving each aperture blade to rotate to adjust the aperture aperture size, the rotating movable ring 5 drives the upper pin shaft 32 of each aperture blade 31 to rotate synchronously through the pin hole 52. At this time, the lower pin shaft 33 of each aperture blade 31 slides along the long groove 11 of the lower base 1, thereby causing each aperture blade 31 to rotate.

[0042] Example 3, as Figure 1 and Figure 2 As shown, the difference between this embodiment 3 and embodiment 1 is that: the upper cover plate 2 has a vertical through hole 21 in a circular shape, and the upper surface of the movable ring 5 is provided with an upward protruding circular protrusion 53, which extends into the cover hole 21 of the upper cover plate 2.

[0043] In this embodiment, the movable ring 5 and the blade assembly 3 are axially limited between the upper cover plate 2 and the lower base 1. In this embodiment, the movable ring 5 is circumferentially limited by the cooperation between the through hole 21 of the cover plate and the circular protrusion 53, so as to ensure the accuracy of the installation position of the movable ring 5.

[0044] Example 4, as Figure 2 and Figure 4 As shown, the difference between this embodiment four and embodiment one is that: two U-shaped iron solenoid valve assemblies 6 are embedded in the housing cavity, and the magnetic poles 611 of the U-shaped iron core 61 of each U-shaped iron solenoid valve assembly 6 are close to the movable magnet 7.

[0045] When the novel magnetic valve driven iridescent aperture of this embodiment 4 is working, the state of the magnetic pole 611 of the corresponding U-shaped iron core 61 can be controlled by controlling the energizing sequence of the coil windings 63 of the two U-shaped iron solenoid valve assemblies 6, that is, the movable magnet 7 is driven to rotate by the cooperation of the two U-shaped iron solenoid valve assemblies 6.

[0046] Example 5, as Figures 1 to 4As shown, the difference between this fifth embodiment and the first embodiment is that: the lower surface of the lower base 1 is equipped with an FPC circuit board 8, and the coil winding 63 of the U-iron solenoid valve assembly 6 is electrically connected to the FPC circuit board 8 through a metal pin 9.

[0047] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A novel magnetic valve driven iris aperture, comprising a lower base (1), an upper cover plate (2), a blade assembly (3), a drive gear (4), and a circular movable ring (5). The upper cover plate (2) is installed at the upper end of the lower base (1), and a housing cavity is formed between the lower base (1) and the upper cover plate (2). The blade assembly (3), the drive gear (4), and the movable ring (5) are respectively installed in the housing cavity. The blade assembly (3) includes a plurality of aperture blades (31), and each aperture blade (31) is driven by the movable ring (5). An external gear (51) is provided on the outer edge of the movable ring (5), and the drive gear (4) meshes with the external gear (51) of the movable ring (5); Its features are: A U-shaped solenoid valve assembly (6) is embedded in the cavity of the outer casing next to the movable ring (5). The U-shaped solenoid valve assembly (6) is fixed between the lower base (1) and the upper cover plate (2). The U-shaped solenoid valve assembly (6) includes a U-shaped iron core (61), a winding shaft (62) fitted on the U-shaped iron core (61), and a coil winding (63) wrapped around the winding shaft (62). The new type of magnetic valve driven iridescent aperture also includes a movable magnet (7), a drive gear (4) which is a plastic part, and the movable magnet (7) and the drive gear (4) are injection molded into an integral structure; the U-shaped iron core (61) is located on the side of the movable magnet (7), and the magnetic pole (611) of the U-shaped iron core (61) is close to the movable magnet (7).

2. The novel magnetic valve-driven iris aperture according to claim 1, characterized in that: The blade group (3) is located at the lower end of the movable ring (5), and each of the aperture blades (31) is provided with an upwardly protruding upper pin (32); the movable ring (5) is provided with pin holes (52) corresponding to the upper pins (32) of each aperture blade (31), and the upper pins (32) of each aperture blade (31) are respectively inserted into the corresponding pin holes (52); Each aperture blade (31) is also provided with a downward protruding lower pin (33), and the lower pin (33) of the aperture blade (31) and the upper pin (32) are arranged at intervals; the lower base (1) is provided with a long groove (11) corresponding to the lower pin (33) of each aperture blade (31), and the lower pin (33) of each aperture blade (31) is respectively inserted into the corresponding long groove (11).

3. The novel magnetic valve-driven iris aperture according to claim 1, characterized in that: The upper cover plate (2) has a vertical through hole (21) in a circular shape. The upper surface of the movable ring (5) is provided with an upward protruding circular protrusion (53). The circular protrusion (53) of the movable ring (5) extends into the cover hole (21) of the upper cover plate (2).

4. The novel magnetic valve-driven iris aperture according to claim 1, characterized in that: The outer shell cavity contains two U-shaped solenoid valve assemblies (6) arranged at intervals, and the magnetic poles (611) of the U-shaped iron core (61) of each U-shaped solenoid valve assembly (6) are close to the movable magnet (7).

5. A novel magnetic valve-driven iris aperture according to claim 1, characterized in that: The lower surface of the lower base (1) is equipped with an FPC circuit board (8), and the coil winding (63) of the U-iron solenoid valve assembly (6) is electrically connected to the FPC circuit board (8) through a metal pin (9).

6. A novel magnetic valve-driven iris aperture according to claim 1, characterized in that: The lower base (1) is fastened to the upper cover plate (2).

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