A self-locking shutter structure

Abstract

This invention discloses a self-locking shutter structure, including a shutter body and shutter blades disposed within the shutter body. The shutter body is equipped with a drive assembly and a transmission assembly. The transmission assembly includes a paddle and a rotating gear slidably connected to one end of the paddle. The other end of the paddle is movably connected to the shutter blades to control the opening or closing of the shutter blades. The transmission assembly is connected to the drive assembly via the rotating gear. The rotating gear has a protrusion, and a sliding groove is formed at the end of the paddle near the rotating gear, within which the protrusion slides. When the shutter blades open, the rotating gear rotates, causing the protrusion to be positioned within the sliding groove and abutting against it to restrict the paddle's movement, thus creating a self-locking mechanism. Through this design, the invention can achieve self-locking when the shutter body is subjected to external impact, maintaining an open or closed state at all times.

Description

Technical Field

[0001] This invention relates to the technical field of cameras, and in particular to a self-locking shutter structure. Background Technology

[0002] The shutter is a crucial component of a camera, primarily determining the image's exposure by controlling the time it takes for light to enter the camera sensor or film. The shutter has several shutter blades, each with two states: open and closed, controlled by a solenoid valve.

[0003] The problem is that when the shutter is open or closed and the camera's battery is low, it cannot provide operating current to the solenoid valve. As a result, the solenoid valve cannot control the shutter blades to open and close. Since the solenoid valve is in a power-off mode, the shutter blades will rotate when subjected to external impact, causing the shutter state to switch. This prevents the self-locking mechanism from working and results in a lack of state holding effect, which reduces the quality of the product and affects the user experience. Summary of the Invention

[0004] In order to overcome the technical defects mentioned in the background art, the purpose of the present invention is to provide a self-locking shutter structure that can form a self-locking effect when the shutter body is subjected to external impact force, and always maintain the effect of being open or closed.

[0005] The present invention adopts the following technical solution:

[0006] A self-locking shutter structure includes a shutter body and shutter blades disposed within the shutter body. The shutter body has a drive assembly and a transmission assembly. The transmission assembly includes a paddle and a rotating gear slidably connected to one end of the paddle. The other end of the paddle is movably connected to the shutter blades for controlling the opening or closing of the shutter blades. The transmission assembly is driven by the rotating gear and the drive assembly. The rotating gear has a protrusion, and the paddle has a sliding groove at the end near the rotating gear, within which the protrusion slides.

[0007] The drive component drives the transmission component to rotate between the open and closed positions, and during the rotation, the protrusion on the rotating gear slides in the sliding groove as the rotating gear rotates.

[0008] When the shutter blade is in the open position, the protrusion engages with the sliding groove to restrict the paddle from rebounding and form a self-locking mechanism.

[0009] Optionally, when the shutter blade is in the open position, the included angle α between the protrusion and the sliding groove is greater than 90 degrees, wherein the included angle α is formed by the radial direction of the protrusion and the lower edge of the sliding groove, and the radial direction of the protrusion is the direction of the reaction force F generated when the protrusion is subjected to the impact force 1 of the sliding groove when the paddle rebounds.

[0010] Optionally, the drive assembly includes a solenoid valve, and a drive gear extends from within the solenoid valve, the drive gear meshing with the rotating gear.

[0011] Optionally, the shutter body further includes a fixed base, a fixed cover that snaps into one side of the fixed base, and a partition disposed between the fixed base and the fixed cover. The solenoid valve, the rotating gear, and the paddle are all disposed on the other side of the fixed base, and the shutter blade is movably disposed between the fixed base and the partition.

[0012] Optionally, the end of the paddle away from the rotating gear passes through the fixed base and is movably connected to the shutter blade, so that the paddle can be moved and the shutter blade can be opened or closed under the drive of the solenoid valve.

[0013] Optionally, a movable post protrudes from one end of the paddle that is movably connected to the shutter blade, and a movable hole is provided on the fixed base at a position corresponding to the axial direction of the movable post. When the paddle swings, the movable post passes through the movable hole and drives the shutter blade to open or close.

[0014] Optionally, the mounting base has a protruding mounting portion around the transmission assembly, and a gearbox cover is fitted over the mounting portion.

[0015] Optionally, a slot is provided on the inner periphery of the side of the fixing seat that is in contact with the partition, and a buckle is provided on the outer periphery of the partition. The partition passes through the slot and is engaged with the fixing seat through the buckle.

[0016] Optionally, a snap-fit ​​hole is provided at the periphery of the fixing base, and a snap hook is provided at the periphery of the fixing cover. The fixing cover passes through the snap-fit ​​hole via the snap hook and snaps onto the fixing base.

[0017] Optionally, the solenoid valve is also provided with a wire that is electrically connected to an external power source, and the wire is fitted into the mounting base.

[0018] In summary, the beneficial effects of the present invention are as follows:

[0019] By incorporating a drive assembly and a transmission assembly on the shutter body, the drive assembly drives the transmission assembly, thereby automating the opening and closing of the shutter blades. Simultaneously, by setting a paddle and a rotating gear, with a protrusion on the rotating gear and a sliding groove on the paddle, the paddle is fitted onto the protrusion via the sliding groove. When the rotating gear rotates, the protrusion moves left and right within the sliding groove, causing the paddle to swing, thus opening or closing the shutter blades. Furthermore, because the protrusion moves within the sliding groove, when the shutter body is subjected to external impact, the protrusion abuts against the sliding groove, restricting the paddle's swing and achieving self-locking. This prevents the switching between the open and closed states of the shutter blades, improving the state-keeping effect of the invention and further enhancing the user experience.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a structural diagram of an embodiment of the present invention;

[0022] Figure 2 This is a front view of an embodiment of the present invention;

[0023] Figure 3 This is an embodiment of the present invention. Figure 2 Enlarged view of region A;

[0024] Figure 4 This is a partial enlarged view of an embodiment of the present invention;

[0025] Figure 5 This is an exploded view of an embodiment of the present invention;

[0026] Figure 6 This is a structural diagram of the paddle in an embodiment of the present invention.

[0027] Explanation of the reference numerals in the figure:

[0028] 1. Shutter body; 11. Mounting base; 112. Movable hole; 113. Mounting part; 114. Slot; 115. Snap-fit ​​hole; 12. Fixing cover; 121. Hook; 13. Partition; 131. Buckle; 14. Gearbox cover;

[0029] 3. Drive assembly; 31. Solenoid valve; 32. Drive gear; 33. Wire; 4. Transmission assembly; 41. Paddle; 411. Sliding groove; 412. Moving column; 42. Rotating gear; 421. Protrusion. Detailed Implementation

[0030] To make the content of this invention easier to understand, the invention will be further described below with reference to specific embodiments and accompanying drawings.

[0031] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Unless otherwise stated, "a plurality of" means two or more.

[0032] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of these terms in this invention based on the specific circumstances.

[0033] like Figures 1 to 5 As shown, this application embodiment provides a self-locking shutter structure, including a shutter body 1 and shutter blades disposed in the shutter body 1. The shutter body 1 is provided with a drive assembly 3 and a transmission assembly 4. The transmission assembly 4 includes a paddle 41 and a rotating gear 42 slidably connected to one end of the paddle 41. The other end of the paddle 41 is movably connected to the shutter blades to control the opening or closing of the shutter blades. The transmission assembly 4 is connected to the drive assembly 3 via the rotating gear 42. The rotating gear 42 is provided with a protrusion 421. A sliding groove 411 is formed at the end of the paddle 41 near the rotating gear 42, and the protrusion 421 slides in the sliding groove 411. The drive assembly 3 drives the transmission assembly 4 to rotate between the open and closed positions. During the rotation, the protrusion 421 on the rotating gear 42 slides in the sliding groove 411 as the rotating gear 42 rotates. When the shutter blades are in the open position, the protrusion 421 slides in the sliding groove 411. This is used to limit the rebound of the paddle 41 to form a self-locking mechanism.

[0034] In this embodiment, multiple shutter blades can be provided, each blade being crescent-shaped. The shutter body 1 is annular, with the blades stacked sequentially within it. The shutter blades can open and close within the shutter body 1, thereby adjusting the amount and duration of light entering the camera. By controlling the opening and closing of the shutter blades, different exposure effects can be achieved, thus affecting the brightness and sharpness of the image. The driving component 3 can be located at the edge of the shutter body 1, and the transmission component 4 is located adjacent to and connected to the driving component 3. The driving component 3 can then drive the transmission component 4 to exert force on the shutter blades, thereby opening and closing the shutter. Specifically, the transmission component 4 may include a lever 41 and a rotating gear 42. One end of the lever 41, near the rotating gear 42, has a sliding groove 411. The other end of the lever 41 is movably connected to the shutter blades. By swinging the lever 41, the shutter blades can be opened and closed. Furthermore, a protrusion 421 is provided on the rotating gear 42, and one end of the paddle 41 with a sliding groove 411 is sleeved on the protrusion 421. The rotating gear 42 is connected to the drive assembly 3 for transmission. The drive assembly 3 drives the rotating gear 42, and the protrusion 421 can slide in the sliding groove 411, causing the paddle 41 to swing, thereby driving the shutter blade to move to realize the opening and closing of the shutter blade.

[0035] It should be understood that, as Figure 3 As shown, when the shutter blade is open, the protrusion 421 is located at the left end of the sliding groove 411 and abuts against the sliding groove 411. When the shutter body 1 is impacted by an external force, the lever 41 will be subjected to a downward impact force T. However, since the protrusion 421 is located at the left end of the sliding groove 411, the impact force T will act on the protrusion 421. At this time, the protrusion 421 will generate a reaction force F with the impact force T, thereby canceling out the impact force. Since the shutter blade and the lever 41 are movably connected, when the lever 41 restricts the swing, the shutter blade will also be restricted, thereby forming a self-locking effect, achieving a state holding effect, and improving the user experience.

[0036] Similarly, when the shutter blades are closed, the protrusion 421 will move to the right side of the sliding groove 411. When the shutter body 1 is also impacted by an external force, the lever 41 will also be subjected to an impact force T on the protrusion 421. At this time, the protrusion 421 will also generate a reaction force F, which will cancel out the impact force T. Similarly, a self-locking mechanism is formed between the rotating gear 42 and the lever 41, which restricts the shutter blades from swinging. This achieves the effect of maintaining the shutter blades in the closed state while preventing dust and other impurities from entering.

[0037] like Figure 4As shown, when the shutter blade is in the open position, the included angle α between the protrusion 421 and the sliding groove 411 is greater than 90 degrees. The included angle α is formed by the radial direction of the protrusion 421 and the lower edge of the sliding groove 411. The radial direction of the protrusion 421 is the direction of the reaction force F generated when the paddle 41 rebounds and the protrusion 421 is subjected to the impact force T of the sliding groove 411.

[0038] In this embodiment, when the shutter blade is opened, the radial direction of the protrusion 421 forms an angle α with the lower edge of the sliding groove 411 under the rotation of the rotating gear 42. This angle α is greater than 90 degrees. It should be noted that the radial direction of the protrusion 421 is the direction of the reaction force F generated when the protrusion 421 is subjected to the impact force T of the sliding groove 411. That is to say, the reaction force F subjected to the protrusion 421 forms an angle α with the lower edge of the sliding groove 411.

[0039] Similarly, when the shutter blades are closed, the protrusion 421 will move to the right side of the sliding groove 411. Likewise, the radial direction of the protrusion 421 will form an angle with the upper edge of the sliding groove 411, which is also greater than 90 degrees. Thus, under the action of external impact, the protrusion 421 abuts against the sliding groove 411 to restrict the swing of the lever 41 and achieve self-locking, so that the shutter blades can remain closed when closed, improving the user experience.

[0040] like Figure 3 As shown, the drive assembly 3 includes a solenoid valve 31, and a drive gear 32 extends from the solenoid valve 31, which meshes with the rotating gear 42.

[0041] In this embodiment, the drive assembly 3 may include a solenoid valve 31 and a drive gear 32. The drive gear 32 extends from inside the solenoid valve 31 and meshes with the rotating gear 42. Driven by the solenoid valve 31, the drive gear 32 drives the transmission gear to rotate. Since the protrusion 421 is provided on the rotating gear 42 and is located in the sliding groove, the rotating gear 42 drives the protrusion 421 to move in the sliding groove 411, thereby driving the paddle 41 to swing so that the shutter blades open and close.

[0042] like Figure 5 As shown, the shutter body 1 also includes a fixed base 11, a fixed cover 12 that is snapped onto one side of the fixed base 11, and a partition 13 disposed between the fixed base 11 and the fixed cover 12. The solenoid valve 31, the rotating gear 42 and the paddle 41 are all disposed on the other side of the fixed base 11, and the shutter blade is movably disposed between the fixed base 11 and the partition 13.

[0043] In this embodiment, the shutter body 1 may include a fixed base 11, a partition 13, and a fixed cover 12. The partition 13 is installed between the fixed base 11 and the fixed cover 12. By setting the partition 13, the shutter blades can be engaged with the partition 13, preventing misalignment of the shutter blades when opening and closing. Specifically, the solenoid valve 31, the rotating gear 42, and the paddle 41 are all disposed on the outer side of the fixed base 11, and the shutter blades are movably disposed between the fixed base 11 and the partition 13.

[0044] like Figure 3 , Figure 5 As shown, further, the end of the paddle 41 away from the rotating gear 42 passes through the fixed base 11 and is movably connected to the shutter blade, so that the paddle 41 can be moved and the shutter blade can be opened or closed under the drive of the solenoid valve 31.

[0045] In this embodiment, a cylinder is provided below the right end of the paddle 41 (the end opposite to the sliding groove 411). This cylinder passes through the fixed base 11 and is movably connected to the ends of each shutter blade, or it can be rotatably connected. Thus, when the solenoid valve 31 drives the rotating gear 42, the paddle 41 drives each shutter blade to move through the movable column 412, thereby realizing the opening or closing of the shutter blades. With the above configuration, the shutter body 1 can be kept in an open or closed state by self-locking when subjected to impact force.

[0046] Reference Figure 6 As shown, further, a movable post 412 protrudes from one end of the paddle 41 that is movably connected to the shutter blade. A movable hole 112 is provided on the fixed base 11 at a position corresponding to the axial direction of the movable post 412. When the paddle 41 swings, the movable post 412 passes through the movable hole 112 and drives the shutter blade to open or close.

[0047] In this embodiment of the application, a movable hole 112 is provided on the fixed base 11. The movable hole 112 is located at the position of the swing trajectory of the end of the paddle 41 away from the rotating gear 42. Under the swing of the paddle 41, the movable column 412 can perform pendulum motion in the movable hole 112, thereby driving the shutter blades to open or close.

[0048] Reference Figure 1 and Figure 3 As shown, a mounting portion 113 protrudes from the fixed base 11 around the transmission assembly 4, and a gearbox cover 14 covers the mounting portion 113.

[0049] In this embodiment, the mounting portion 113 is arranged around the transmission assembly 4, specifically around the rotating gear 42 and the paddle 41, and is U-shaped. The opening of the mounting portion 113 faces the solenoid valve 31, thereby facilitating the meshing of the drive gear 32 and the rotating gear 42, and also facilitating the installation of the gearbox cover 14. By installing the gearbox cover 14, the paddle 41, the rotating gear 42, and other related components can be protected, and other impurities can be prevented from entering and affecting the self-locking retention effect.

[0050] Reference Figure 5 As shown, a slot 114 is provided on the inner periphery of the side of the fixed base 11 that is in contact with the partition 13, and a buckle 131 is provided on the outer periphery of the partition 13. The buckle 131 is engaged with the slot 114.

[0051] In this embodiment, a slot 114 is provided at the inner periphery of the fixed base 11, and a buckle 131 can be provided at the outer periphery of the partition 13, so that the partition 13 can be engaged in the slot 114 by the buckle 131, which can prevent the partition 13 from falling off, thereby keeping the shutter blade between the fixed base 11 and the partition 13, and preventing the shutter blade from being unable to open and close when the paddle 41 drives the shutter blade.

[0052] like Figure 5 As shown, a snap-fit ​​hole 115 is provided at the periphery of the fixing base 11, and a snap hook is provided at the periphery of the fixing cover 12. The fixing cover 12 is snapped onto the fixing base 11 by the snap hook 121 passing through the snap-fit ​​hole 115.

[0053] In this embodiment, by providing a snap-fit ​​hole 115 at the outer periphery of the fixing base 11 and a snap hook 121 at the periphery of the fixing cover 12, the fixing cover 12 can be snapped onto the fixing base 11 through the snap-fit ​​hole 115. By providing the fixing cover 12, the interior of the shutter body 1 can be protected, thus improving the durability of this embodiment.

[0054] like Figure 1 As shown, the solenoid valve 31 is also provided with a wire 33 that is electrically connected to an external power source, and the wire 33 is attached to the fixing base 11.

[0055] In this embodiment, a wire 33 is also provided on the solenoid valve 31. The wire 33 can also be a PCBA connector. By providing a PCBA connector, external relays, power supplies, etc. can control the drive of the solenoid valve 31, thereby automating the opening and closing of the shutter blades and improving the efficiency of this embodiment.

[0056] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-locking shutter structure, characterized in that, The device includes a shutter body (1) and shutter blades disposed in the shutter body (1). The shutter body (1) is provided with a drive assembly (3) and a transmission assembly (4). The transmission assembly (4) includes a paddle (41) and a rotating gear (42) slidably connected to one end of the paddle (41). The other end of the paddle (41) is movably connected to the shutter blades to control the opening or closing of the shutter blades. The transmission assembly (4) is connected to the drive assembly (3) through the rotating gear (42). The rotating gear (42) is provided with a protrusion (421). The paddle (41) is provided with a sliding groove (411) at one end near the rotating gear (42). The protrusion (421) slides in the sliding groove (411). The drive assembly (3) drives the transmission assembly (4) to rotate between the open and closed positions, and during the rotation, the protrusion (421) on the rotating gear (42) slides in the sliding groove (411) as the rotating gear (42) rotates. When the shutter blade is in the open position, the protrusion (421) cooperates with the sliding groove (411) to restrict the paddle (41) from rebounding and form a self-locking mechanism; When the shutter blade is in the open position, the included angle α between the protrusion (421) and the sliding groove (411) is greater than 90 degrees. The included angle α is formed by the radial direction of the protrusion (421) and the lower groove edge of the sliding groove (411). The radial direction of the protrusion (421) is the direction of the reaction force F generated when the paddle (41) rebounds and the protrusion (421) is subjected to the impact force T of the sliding groove (411).

2. The self-locking shutter structure according to claim 1, characterized in that: The drive assembly (3) includes a solenoid valve (31), and a drive gear (32) extends inside the solenoid valve (31), which meshes with the rotating gear (42).

3. A self-locking shutter structure according to claim 2, characterized in that: The shutter body (1) also includes a fixed seat (11), a fixed cover (12) that is snapped into one side of the fixed seat (11), and a partition (13) disposed between the fixed seat (11) and the fixed cover (12). The solenoid valve (31), the rotating gear (42) and the paddle (41) are all disposed on the other side of the fixed seat (11), and the shutter blade is movably disposed between the fixed seat (11) and the partition (13).

4. A self-locking shutter structure according to claim 3, characterized in that: The end of the paddle (41) away from the rotating gear (42) passes through the fixed base (11) and is movably connected to the shutter blade, so that the paddle (41) can be moved and the shutter blade can be opened or closed under the drive of the solenoid valve (31).

5. A self-locking shutter structure according to claim 4, characterized in that: The end of the paddle (41) that is movably connected to the shutter blade is provided with a movable post (412). The fixed base (11) is provided with a movable hole (112) at a position corresponding to the axial direction of the movable post (412). When the paddle (41) swings, the movable post (412) passes through the movable hole (112) and drives the shutter blade to open or close.

6. A self-locking shutter structure according to claim 3, characterized in that: The mounting base (11) has a protruding mounting part (113) around the transmission assembly (4), and a gearbox cover (14) is covered on the mounting part (113).

7. A self-locking shutter structure according to claim 3, characterized in that: The fixing seat (11) has a slot (114) on the inner periphery of the side that is in contact with the partition (13), and a buckle (131) is provided on the outer periphery of the partition (13). The partition (13) passes through the slot (114) through the buckle (131) and is snapped onto the fixing seat (11).

8. A self-locking shutter structure according to claim 3, characterized in that: The fixing base (11) has a snap-fit ​​hole (115) at its periphery, and the fixing cover (12) has a snap hook (121) at its periphery. The fixing cover (12) passes through the snap-fit ​​hole (115) through the snap hook (121) and snaps onto the fixing base (11).

9. A self-locking shutter structure according to claim 3, characterized in that: The solenoid valve (31) is also provided with a wire (33) that is electrically connected to an external power source, and the wire (33) is attached to the fixed base (11).

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