Anti-impact shutter

Abstract

The invention discloses an anti-impact shutter which comprises a base, a window is arranged on the base, a blade driving assembly is installed on the base, and the blade driving assembly comprises a blade, a driving piece and a rocking handle; the driving piece is arranged on the window side and fixed to the base, the rocking handle is rotationally arranged on the base, and the output end of the driving piece is connected with the rocking handle; the blade is rotationally arranged on the base, a through groove is formed in the blade, a fixing column is arranged on the rocking handle, and the fixing column is driven by the driving part to slide in the through groove and drive the blade to open and close the window; the connecting line from the rotating center of the rocking handle to the fixing column is L1, and the connecting line from the rotating connecting point of the blade and the base to the fixing column is L2. When the blade opens the window, the included angle between the L1 and the L2 is an acute angle; when the shutter is subjected to vibration and / or external impact, a rotating dead point is formed among the rocking handle, the fixing column and the rotating connection point of the blade and the base, rotation of the blade is limited, and the blade can be prevented from being automatically closed when being impacted.

Description

Technical Field

[0001] The present invention relates to the field of shutter devices, and in particular to an impact-resistant shutter. Background Art

[0002] The shutter is frequently subjected to impact in product applications, and is required to remain highly stable under impact and shaking.

[0003] For example, when a shutter is used in an on-board infrared camera, driving in remote areas, on bumpy roads, or on complex road conditions, such as off-road roads, or over speed bumps, the shutter blades can often vibrate and / or be impacted by external forces, causing the shutter to close without human control, affecting the camera's infrared imaging function. At night or in conditions with poor visibility, such as fog and haze, the camera's infrared imaging function can fail, potentially leading to traffic accidents. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a shock-resistant shutter The technical solution adopted by the present invention to solve its technical problem is: An impact-resistant shutter comprises: a base, a window is provided on the base, a blade drive assembly is mounted on the base, and the blade drive assembly comprises blades, a drive member and a crank handle; The driving member is provided on the side of the window and fixed on the base, the crank is rotatably provided on the base, and the output end of the driving member is connected to the crank; The blade is rotatably mounted on the base, and a through slot is provided on the blade. A fixing column is provided on the crank handle. The fixing column slides in the through slot under the drive of the driving member and drives the blade to open and close the window. The connecting line from the rotation center of the crank handle to the fixed column is L1, and the connecting line from the rotation connection point between the blade and the base to the fixed column is L2; When the blade opens the window, the angle between L1 and L2 is an acute angle.

[0005] In the impact-resistant shutter as described above, the viewing window is rectangular, the blade drive assemblies are in two groups, and the rotation centers of the two blades are located on opposite sides of the viewing window.

[0006] In the impact-resistant shutter as described above, the blade drive assembly includes more than two blades.

[0007] As described above, in the impact-resistant shutter, the viewing window is rectangular, the blades include a first special-shaped blade and a second special-shaped blade, the first special-shaped blade includes a first flat portion, the second special-shaped blade includes a second flat portion and a bent portion connected to the second flat portion, and the bent portion is arranged away from the rotation center of the second special-shaped blade.

[0008] In the impact-resistant shutter as described above, the first flat portion and the second flat portion are equal in size.

[0009] In the impact-resistant shutter as described above, when the blade opens or closes the window, the first flat portion overlaps with the second flat portion.

[0010] In the impact-resistant shutter as described above, the diameter of the through slot on the first special-shaped blade and / or the second special-shaped blade is more than 1.5 times the diameter of the fixing column.

[0011] In the impact-resistant shutter as described above, the blade driving component is a solenoid valve.

[0012] As described above, the impact-resistant shutter has a mounting groove on the base, and a conductive member is connected between the two blade drive assemblies, and the conductive member is embedded in the mounting groove.

[0013] As for the impact-resistant shutter described above, a limiting block is provided on the peripheral side of the base, and when the blade opens the window, the limiting block abuts against the blade.

[0014] The beneficial effects of the present invention are: The driving member drives the crank to rotate with the rotation connection point between the crank and the base as the rotation center. At the same time, because the fixing column of the crank is arranged in the through groove, the rotation of the crank simultaneously drives the blade to rotate with the rotation connection point between the crank and the base as the rotation center, thereby realizing the opening and closing of the window; The connecting line from the rotation center of the crank handle to the fixed column is L1, and the connecting line from the rotation connection point between the blade and the base to the fixed column is L2; When the blade opens the window, the angle between L1 and L2 is an acute angle; At this time, the shutter in the present application is subjected to vibration and / or external impact, and a rotational dead point is formed between the crank handle, the fixed column, the blade and the rotation connection point of the base, which limits the rotation of the blade and prevents the blade from closing automatically due to impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and examples.

[0016] Figure 1 is a schematic diagram of the open state of the impact-resistant shutter in this application; Figure 2is a schematic diagram of the closed state of the impact-resistant shutter in this application; Figure 3 is an exploded view of the impact-resistant shutter in this application; The reference numerals are as follows: 1-base; 11-limiting block; 12-mounting slot; 2-window; 3-blade drive assembly; 31-blade; 311-through slot; 32-driving member; 33-crank handle; 331-fixing column; 312-first special-shaped blade; 3121-first flat portion; 313-second special-shaped blade; 3131-second flat portion; 3132-bending portion; 5-conductive member. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0018] Reference Figures 1 to 3 The present application provides an impact-resistant shutter, comprising: a base 1, wherein the base 1 is provided with a window 2, and a blade drive assembly 3 is mounted on the base 1, wherein the blade drive assembly 3 comprises a blade 31, a drive member 32, and a crank 33; The driving member 32 is provided on the side of the window 2 and fixed on the base 1 . The crank 33 is rotatably provided on the base 1 . The output end of the driving member 32 is connected to the crank 33 . The blade 31 is rotatably mounted on the base 1 and has a through slot 311 formed thereon. The crank 33 is provided with a fixing post 331 . Driven by the driving member 32 , the fixing post 331 slides within the through slot 311 and drives the blade 31 to open and close the window 2 . The connecting line between the rotation center of the crank 33 and the fixed column 331 is L1, and the connecting line between the rotation connection point between the blade 31 and the base 1 and the fixed column 331 is L2. When the blade 31 opens the window 2 , the angle between L1 and L2 is an acute angle.

[0019] At this time, the shutter in this embodiment is subjected to vibration and / or external impact, and a rotational dead point is formed between the crank handle 33, the fixed column 331, the blade 31 and the rotation connection point of the base 1, which limits the rotation of the blade 31 and prevents the blade from closing automatically due to impact.

[0020] In this embodiment, the driving member 32 directly drives the crank 33 to rotate, which has higher transmission efficiency and lower transmission energy consumption. If a transmission structure is added between the driving member 32 and the crank 33, it will not only reduce the transmission efficiency and increase the transmission energy consumption, but also increase the cost of component wear. After long-term use, it is not conducive to the transmission components to wear more easily, and it cannot be ensured that when the blade 31 opens the window 2, the angle between L1 and L2 is an acute angle, which affects the impact resistance of the shutter.

[0021] It can be understood that the above-mentioned connecting lines L1 and L2 are virtual connecting lines and are not part of the physical components in the present invention.

[0022] It can be understood that the window 2 is a window 2 provided in the vehicle-mounted infrared thermal imaging camera and connected to the photographic module. When the blade drive assembly 3 drives the blade 31 to open the window 2, the photographic module photographs the object through the window 2. When the blade drive assembly 3 drives the blade 31 to close the window 2, the field of view of the photographic module is completely blocked.

[0023] In one embodiment, the window 2 is rectangular, the blade drive assembly 3 is provided in two groups, and the rotation centers of the two blades 31 are set on opposite sides of the window 2. The blade drive assembly 3 is provided in two groups, and the two groups of blades 31 jointly close the window 2. When the blades 31 are in the state of opening the window 2, the space reserved for accommodating the blades 31 on the base 1 can be reduced, which is conducive to reducing the size of the shutter and applying the shutter to small devices. Furthermore, if only one group of blade drive assembly 3 is provided, when subjected to vibration, the mass of the blade on one side is large and needs to bear the entire impact load, which can easily cause the blade 31 to deform or even break, affecting the effect of the blade drive assembly 3 in opening and closing the window 2.

[0024] The rotation centers of the two blades 31 are located on opposite sides of the window 2 , which can balance the forces on the shutter and improve the structural stability of the shutter.

[0025] Specifically, the two blade drive assemblies 3 are arranged along the direction of gravity.

[0026] In one embodiment, the blade drive assembly 3 includes more than two blades 31 .

[0027] That is, at least four or more blades 31 jointly close the window 2. When the blade 31 is in the state of opening the window 2, the space reserved for accommodating the blade 31 on the base 1 is further reduced, and the volume of the shutter is further reduced. In terms of quality, the mass of a single blade 31 can be further reduced, the probability of deformation of the blade 31 is reduced, and the influence of the mass of the blade 31 on the operation of the blade drive assembly 3 is further reduced.

[0028] In one embodiment, the viewing window 2 is rectangular, and the blade 31 includes a first special-shaped blade 312 and a second special-shaped blade 313. The first special-shaped blade 312 includes a first flat portion 3121, and the second special-shaped blade 313 includes a second flat portion 3131 and a bent portion 3132 connected to the second flat portion 3131. The bent portion 3132 is located away from the rotation center of the second special-shaped blade 313. If both the first special-shaped blade 312 and the second special-shaped blade 313 consist only of flat portions, they would not be able to completely block the viewing window 2. Therefore, the provision of the bent portion 3132 ensures that the viewing window 2 is not blocked when opened and that the viewing window 2 is completely sealed when closed.

[0029] In one embodiment, when the blade 31 opens or closes the window 2, the first flat portion 3121 overlaps with the second flat portion 3131. This can further reduce the storage space for the blade 31 and the size of the shutter.

[0030] In one embodiment, the diameter of the through slot 311 on the first special-shaped blade 312 and / or the second special-shaped blade 313 is at least 1.5 times the diameter of the fixing post 331. When the window 2 is in the open and closed states, the fixing post 331 abuts against both sides of the through slot 311.

[0031] In one embodiment, the blade driving assembly 3 is a solenoid valve. When the solenoid valve is energized, the driving member 32 drives the blade 31 to rotate, thereby opening and closing the window 2.

[0032] In one embodiment, the base 1 is provided with a mounting slot 12. A conductive member 5 is connected between the two blade drive assemblies 3 and is embedded in the mounting slot 12. Connecting the conductive member 5 between the two blade drive assemblies 3 allows for synchronized power on and off, achieving instantaneous switching. The conductive member 5 is embedded in the mounting slot 12 to avoid interfering with the rotation of the blades 31.

[0033] Specifically, the conductive member 5 is a flexible circuit board.

[0034] In one embodiment, a limit block 11 is provided around the base 1, and when the blade 31 opens the window 2, the limit block 11 abuts against the blade 31. The limit block 11 is used to limit the movement of the blade 31, so that the blade 31 does not interfere with other components.

[0035] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An impact-resistant shutter, characterized in that: include: A base (1), wherein a viewing window (2) is provided on the base (1), and a blade drive assembly (3) is mounted on the base (1), wherein the blade drive assembly (3) comprises a blade (31), a drive member (32), and a crank (33); The driving member (32) is provided on the side of the window (2) and fixed on the base (1); the crank (33) is rotatably provided on the base (1); and the output end of the driving member (32) is connected to the crank (33); The blade (31) is rotatably mounted on the base (1), and a through slot (311) is provided on the blade (31). A fixing column (331) is provided on the crank (33). The fixing column (331) slides in the through slot (311) under the drive of the driving member (32), and drives the blade (31) to open and close the window (2). The connecting line from the rotation center of the crank (33) to the fixed column (331) is L1, and the connecting line from the rotation connection point between the blade (31) and the base (1) to the fixed column (331) is L2; When the blade (31) opens the window (2), the angle between L1 and L2 is an acute angle.

2. The impact-resistant shutter according to claim 1, wherein: The viewing window (2) is rectangular, the blade drive assembly (3) is in two groups, and the rotation centers of the two blades (31) are located on opposite sides of the viewing window (2).

3. The impact-resistant shutter according to claim 2, wherein: The blade drive assembly (3) comprises more than two blades (31).

4. The impact-resistant shutter according to claim 3, wherein: The viewing window (2) is rectangular, and the blade (31) includes a first special-shaped blade (312) and a second special-shaped blade (313), wherein the first special-shaped blade (312) includes a first flat portion (3121), and the second special-shaped blade (313) includes a second flat portion (3131) and a bent portion (3132) connected to the second flat portion (3131), and the bent portion (3132) is arranged away from the rotation center of the second special-shaped blade (313).

5. The impact-resistant shutter according to claim 4, wherein: The first flat portion (3121) and the second flat portion (3131) are equal in size.

6. The impact-resistant shutter according to claim 4, wherein: When the blade (31) opens or closes the window (2), the first flat portion (3121) overlaps with the second flat portion (3131).

7. The impact-resistant shutter according to claim 4, wherein: The diameter of the through slot (311) on the first special-shaped blade (312) and / or the second special-shaped blade (313) is greater than 1.5 times the diameter of the fixing column (331).

8. The impact-resistant shutter according to claim 2, wherein: The blade drive component (3) is a solenoid valve.

9. The impact-resistant shutter according to claim 8, wherein: The base (1) is provided with a mounting groove (12), a conductive member (5) is connected between the two blade drive assemblies (3), and the conductive member (5) is embedded in the mounting groove (12).

10. The impact-resistant shutter according to claim 1, wherein: A limiting block (11) is provided on the circumferential side of the base (1); when the blade (31) opens the window (2), the limiting block (11) abuts against the blade (31).

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