Fast-assembly large-light-through-hole thin infrared shutter device

Abstract

The utility model discloses a fast-assembly type large-light-through-hole thin infrared shutter device, which comprises a fixed seat, a switching blade, a driving mechanism and a rear cover plate, a light through hole and a first mounting groove are formed in the fixed seat, the rear cover plate is provided with a limiting bulge and a buckle pin, first fastening holes are formed in the other two opposite sides of the rear cover plate, and a limiting groove and a limiting slot which are correspondingly matched with the limiting bulge and the buckle pin are formed in the first mounting groove; and the second fastening hole is matched with the first fastening hole. By adopting the double-combination mode of the buckling structure and the screw fastening, the buckling structure provides preliminary fixation and prevents displacement between internal components of the driving mechanism, the screw fastening provides additional stability, and the buckling structure and the screw fastening are combined for use, so that the correct position relation between the components in the driving mechanism is ensured, and the reliability of the driving mechanism is improved. And the connection stability between the rear cover plate and the fixed seat is enhanced, and the transmission efficiency and the transmission quality are ensured.

Description

Technical Field

[0001] The utility model relates to the field of infrared thermal imaging equipment, in particular to a quick-install thin infrared shutter device with a large light aperture. Background Art

[0002] Infrared thermal imaging equipment utilizes an infrared detector and an optical imaging lens to detect the infrared radiation energy distribution pattern of the target being measured. This pattern is reflected on the infrared detector's photosensitive element, resulting in an infrared thermal image. This thermal image corresponds to the thermal distribution field on the object's surface. Infrared thermal imaging equipment typically has a light aperture for imaging. The infrared shutter device primarily consists of a switching blade and a drive mechanism. This drive mechanism drives the blade to move, opening and closing the light aperture to achieve switching.

[0003] Existing shutter devices generally consist of a mounting base, a drive mechanism, and a rear cover. The mounting base has a mounting cavity for the drive mechanism. The drive mechanism is typically placed in the mounting cavity and secured to the mounting base by the rear cover to prevent displacement. Existing rear covers and mounting bases are typically secured directly using screws and other fasteners. However, because the drive mechanism consists of multiple components, including an iron block, magnet, crank handle, and winding assembly, and each component is small, it is prone to displacement during assembly, resulting in low assembly efficiency. Displacement of internal drive mechanism components can severely impact transmission efficiency and quality, thereby reducing the imaging accuracy and quality of infrared thermal imaging equipment. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the present invention aims to provide a quick-install thin infrared shutter device with a large aperture.

[0005] The object of the utility model is achieved by the following technical solution: a quick-install, large-light-aperture, thin-type infrared shutter device, comprising a fixing seat, a switching blade, a driving mechanism, and a rear cover; the switching blade and the driving mechanism are respectively mounted on the front and back of the fixing seat; the fixing seat is provided with a light-through hole for transmitting light and a first mounting groove for mounting the driving structure on one side of the light-through hole, the rear cover is provided with a limiting protrusion and a snap pin on two opposite sides of the rear cover, and the other two opposite sides of the rear cover are provided with a first fastening hole, the first mounting groove is provided with a limiting groove and a limiting slot corresponding to the limiting protrusion and the snap pin, and a second fastening hole is mounted in cooperation with the first fastening hole. During installation, the limiting protrusion and the snap pin of the rear cover are first snapped into the limiting groove and limiting slot on the fixing seat, and after pre-pressing, the rear cover and the fixing seat are locked by fasteners in cooperation with the first fastening hole and the second fastening hole.

[0006] Optionally, the driving mechanism includes a driving member and a large crank handle, a first rotating shaft and an arc-shaped through hole are provided on the first mounting groove, the middle part of the large crank handle is pivotally connected to the first rotating shaft, and the two ends of the large crank handle extend from the arc-shaped through hole and are connected to the switching blade; the driving member drives the large crank handle to rotate, thereby driving the switching blade to move closer to or away from the light-through hole.

[0007] Optionally, the driving member includes a U-shaped iron block, a magnet, a small crank and a winding group. The first mounting groove is provided with a second mounting groove adapted to the shape of the driving member. The U-shaped iron block is installed in the second mounting groove. The U-shaped iron block includes a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are distributed in a U-shape; the ends of the first connecting arm and the second connecting arm are recessed to form a groove position, and the winding group is wound on the first connecting arm; a second rotating shaft is provided on the second mounting groove, and the small crank is movably mounted on the second rotating shaft. The magnet can be rotatably mounted on the outside of the second rotating shaft, and the magnet is located in the groove position. The magnet is synchronously connected to the small crank, and the swing end of the small crank is transmission-connected to the large crank.

[0008] Optionally, the U-shaped iron block is formed by stacking multiple iron blocks of the same shape and size to increase the winding thickness of the winding group.

[0009] Optionally, a hollow area for heat dissipation is provided on the rear cover.

[0010] Optionally, the driving member further includes a flexible wire group, and both ends of the winding group are electrically connected to the flexible wire group.

[0011] Optionally, the switching blade includes a first blade and a second blade; the first blade and the second blade are both provided with mounting holes, and the two ends of the large crank handle are correspondingly mounted on the mounting holes on the first blade and the second blade. When the large crank handle rotates, it drives the first blade and the second blade at both ends to move in opposite directions to cover or open the light hole.

[0012] Optionally, two groups of positioning posts are protruding from the fixing seat, and two positioning grooves are formed on the blade for the respective groups of positioning posts to extend into, and the positioning grooves extend along the moving direction of the blade.

[0013] Optionally, a front cover is further provided on the front of the fixing seat, and a limiting hole corresponding to the position of the positioning column is provided on the front cover, and the front cover is fixedly mounted on the fixing seat.

[0014] Optionally, a plurality of supporting parts are protruding from the front side of the fixing seat, which are used to support the front cover plate to protect the switching blades.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This application adopts a dual combination of a snap-fit structure and screw fastening. The snap-fit structure provides preliminary fixation to prevent displacement between internal components of the drive mechanism, while screw fastening provides additional stability. The combination of the two not only ensures the correct positional relationship between the various components in the drive mechanism, but also enhances the connection stability between the rear cover and the fixing seat, thereby ensuring transmission efficiency and transmission quality.

[0017] 2. This application uses a small crank to drive a large crank, and the required transmission force is higher. Therefore, multiple U irons are designed to be stacked and the winding length of the winding group is increased to increase the magnetic field force for better transmission.

[0018] 3. The present application designs a hollow area on the back cover, which is beneficial to the heat dissipation of the driving components, improves the operating efficiency of the driving components, and extends the service life of the shutter device.

[0019] 4. The blades of the present application open and close by swinging in a straight line up and down, which takes up little space and can increase the size of the light hole, effectively improving space utilization.

[0020] 5. The present application fixes the blades on opposite sides by means of positioning posts arranged on opposite sides of the light-through hole and two positioning grooves arranged on the blades for the positioning posts to extend into, thereby preventing the blades from flying away from the shutter window due to inertia after closing into place, thereby improving the service life of the shutter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a quick-install, large-aperture, thin infrared shutter device according to a preferred embodiment of the present invention;

[0022] Figure 2 This is an exploded view of a quick-install, large-aperture, thin infrared shutter device according to a preferred embodiment of the present invention;

[0023] Figure 3 This is a structural diagram of the fixing base and the rear cover in a preferred embodiment of the present utility model;

[0024] Figure 4 This is a schematic structural diagram of a switching blade in a preferred embodiment of the present utility model;

[0025] Figure 5 This is a partial disassembly diagram of a quick-install, large-aperture, thin infrared shutter device according to a preferred embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the front structure of the fixing seat of a preferred embodiment of the utility model;

[0027] Figure 7This is a schematic diagram of the assembly structure of the drive mechanism and the switching blades in a preferred embodiment of the utility model;

[0028] Figure 8 This is a schematic structural diagram of a U-shaped iron block in a preferred embodiment of the present utility model;

[0029] In the picture:

[0030] 100. Quick-install thin infrared shutter device with large aperture;

[0031] 1. Fixing seat; 11. Light hole; 12. First mounting groove; 13. Position limiting groove; 14. Position limiting slot; 15. Second fastening hole; 16. First rotating shaft; 17. Arc-shaped through hole; 18. Second mounting groove; 19. Second rotating shaft; 110. Positioning column; 111. Support portion;

[0032] 2. Switch blade; 21. First blade; 211. Mounting hole; 212. Positioning slot; 22. Second blade; 221. Mounting hole; 222. Positioning slot;

[0033] 3. Driving mechanism; 31. Driving member; 311. U-shaped iron block; 3111. First connecting arm; 3112. Second connecting arm; 3113. Groove; 312. Magnet; 313. Small crank; 314. Winding assembly; 315. Flexible wire assembly; 32. Large crank;

[0034] 4. Back cover; 41. Limiting protrusion; 42. Buckle pin; 43. First fastening hole; 44. Hollow position;

[0035] 5. Front cover; 51. Limit hole;

[0036] 6. Fasteners. DETAILED DESCRIPTION

[0037] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0038] like Figure 1-8As shown, a quick-installed large-aperture thin infrared shutter device 100 includes a fixing base 1, a switching blade 2, a driving mechanism 3, and a rear cover 4; the switching blade 2 and the driving mechanism 3 are respectively installed on the front and back sides of the fixing base 1; the fixing base 1 is provided with a light hole 11 for transmitting light and a first mounting groove 12 located on one side of the light hole 11 for mounting the driving mechanism, the rear cover 4 is provided with a limiting protrusion 41 and a snap pin 42 on two opposite sides, and the rear cover 4 is provided with a There is a first fastening hole 43, and the first mounting groove 12 is provided with a limiting groove 13 and a limiting slot 14 corresponding to the limiting protrusion 41 and the snap pin 42, as well as a second fastening hole 15 installed in cooperation with the first fastening hole 43. During installation, the limiting protrusion 41 and the snap pin 42 of the rear cover 4 are first snapped into the limiting groove 13 and the limiting slot 14 on the fixing seat 1. After pre-pressing, the fastener 6 is used to cooperate with the first fastening hole 43 and the second fastening hole 15 to lock the rear cover 4 and the fixing seat 1.

[0039] The present application adopts a dual combination of a snap-fit structure and screw fastening. The snap-fit structure provides preliminary fixation to prevent displacement between the internal components of the drive mechanism 3, while the screw fastening provides additional stability. The combination of the two ensures the correct positional relationship between the various components in the drive mechanism 3 and enhances the connection stability between the rear cover 4 and the fixing base 1.

[0040] Furthermore, since component displacement is reduced during assembly, transmission efficiency and quality are guaranteed, thereby improving the imaging accuracy and quality of the infrared thermal imaging device. The snap-fit structure makes removal and installation of the rear cover 4 more convenient and quick, simplifying repair and maintenance work and reducing maintenance costs. By changing the installation method of the rear cover 4, the overall design of the shutter device is optimized, making it more compatible with modern manufacturing and usage requirements.

[0041] As a further preferred embodiment, the driving mechanism 3 includes a driving member 31 and a large crank 32. The first mounting groove 12 is provided with a first rotating shaft 16 and an arc-shaped through hole 17. The middle part of the large crank 32 is pivotally connected to the first rotating shaft 16, and the two ends of the large crank 32 extend from the arc-shaped through hole 17 and are connected to the switching blade 2; the driving member 31 drives the large crank 32 to rotate, thereby driving the switching blade 2 to move closer to or away from the light-through hole 11.

[0042] As a further preferred embodiment, the driving member 31 includes a U-shaped iron block 311, a magnet 312, a small crank 313 and a winding group 314. The first mounting groove 12 is provided with a second mounting groove 18 that is adapted to the shape of the driving member 31. The U-shaped iron block 311 is installed in the second mounting groove 18. The U-shaped iron block 311 includes a first connecting arm 3111 and a second connecting arm 3112. The first connecting arm 3111 and the second connecting arm 3112 are distributed in a U-shaped manner. The ends of the second connecting arms 3112 are recessed to form grooves 3113, and the winding group 314 is wound on the first connecting arm 3111; a second rotating shaft 19 is provided on the second mounting groove 18, and the small crank 313 is movably mounted on the second rotating shaft 19, and the magnet 312 can be rotatably mounted on the outside of the second rotating shaft 19, and the magnet 312 is located in the groove 3113, and the magnet 312 is synchronously connected to the small crank 313, and the swing end of the small crank 313 is transmission-connected to the large crank 32.

[0043] As a further preferred solution, the U-shaped iron block 311 is formed by stacking multiple iron blocks of the same shape and size to increase the winding thickness of the winding group 314.

[0044] The present application uses the small crank 313 to drive the large crank 32 for transmission, and the required transmission force is higher. Therefore, multiple U irons are designed to be stacked and the winding length of the winding group 314 is increased to increase the magnetic field force for better transmission.

[0045] As a further preferred solution, a hollow portion 44 for heat dissipation is provided on the rear cover 4. The design of the hollow portion 44 is beneficial to the heat dissipation of the driving member 31, thereby improving the operating efficiency of the driving member 31 and extending the service life of the shutter device.

[0046] As a further preferred solution, the driving member 31 further includes a flexible wire group 315 , and both ends of the winding group 314 are electrically connected to the flexible wire group 315 .

[0047] As a further preferred embodiment, the switching blade 2 includes a first blade 21 and a second blade 22; the first blade 21 and the second blade 22 are both provided with mounting holes 211 / 221, and the two ends of the large crank 32 are correspondingly mounted on the mounting holes 211 / 221 on the first blade 21 and the second blade 22. When the large crank 32 rotates, it drives the first blades 21 and the second blades 22 at both ends to move in opposite directions to cover or open the light hole 11.

[0048] The blades of the present application open and close by swinging in a straight line up and down, which has a small space occupancy rate, can increase the size of the light-through hole 11, and effectively improve the space utilization rate.

[0049] As a further preferred solution, two groups of positioning columns 110 are protruding from the fixing seat 1, and two positioning grooves 212 / 222 are opened on the blade for each group of positioning columns 110 to extend into, and the positioning grooves 212 / 222 extend along the moving direction of the blade.

[0050] The present application achieves the fixation of the relative sides of the blades by means of positioning posts 110 respectively arranged on the opposite sides of the light-through hole 11, and two positioning grooves 212 / 222 arranged on the blades for the corresponding positioning posts 110 to extend into, thereby preventing the blades from flying away from the shutter window due to inertia after being closed into place, thereby improving the service life of the shutter device.

[0051] As a further preferred solution, a front cover plate 5 is further provided on the front of the fixing seat 1 , and a limiting hole 51 corresponding to the position of the positioning column 110 is provided on the front cover plate 5 . The front cover plate 5 is fixedly mounted on the fixing seat 1 by fasteners 6 .

[0052] As a further preferred solution, a plurality of supporting portions 111 are protruding from the front surface of the fixing seat 1 , which are used to support the front cover plate 5 to protect the switching blade 2 .

[0053] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A quick-install, large aperture, thin infrared shutter device, characterized in that: The cam is secured to a position 400 meters high and has a camming structure, wherein the camming structure is adapted to engage said first and second locking members, wherein the camming structure is adapted to engage said first and second locking members, wherein the camming structure is adapted to engage said first and second locking members, wherein the camming structure is adapted to engage said first and second locking members, wherein the camming structure is adapted to engage said first and second locking members, wherein the camming structure is adapted to engage said first and second locking members, 2. The quick-install, large aperture, thin infrared shutter device according to claim 1, wherein: The driving mechanism includes a driving member and a large crank. The first mounting groove is provided with a first rotating shaft and an arc-shaped through hole. The middle part of the large crank is pivotally connected to the first rotating shaft. The two ends of the large crank extend from the arc-shaped through hole and are connected to the switching blade. The driving member drives the large crank to rotate, thereby driving the switching blade to move closer to or away from the light-through hole.

3. The quick-install, large aperture, thin infrared shutter device according to claim 2, wherein: The driving member includes a U-shaped iron block, a magnet, a small crank and a winding group. The first mounting groove is provided with a second mounting groove adapted to the shape of the driving member. The U-shaped iron block is installed in the second mounting groove. The U-shaped iron block includes a first connecting arm and a second connecting arm. The first connecting arm and the second connecting arm are distributed in a U-shape; the ends of the first connecting arm and the second connecting arm are recessed to form a groove position, and the winding group is wound on the first connecting arm; a second rotating shaft is provided on the second mounting groove, and the small crank is movably mounted on the second rotating shaft. The magnet can be rotatably mounted on the outside of the second rotating shaft, and the magnet is located in the groove position. The magnet is synchronously connected to the small crank, and the swing end of the small crank is transmission connected to the large crank.

4. The quick-install, large aperture, thin infrared shutter device according to claim 3, wherein: The U-shaped iron block is formed by stacking a plurality of iron blocks of the same shape and size to increase the winding thickness of the winding group.

5. The quick-install, large aperture, thin infrared shutter device according to claim 1 or 4, characterized in that: The rear cover is provided with a hollow position for heat dissipation.

6. The quick-install, large aperture, thin infrared shutter device according to claim 3, wherein: The driving component further includes a flexible wire group, and both ends of the winding group are electrically connected to the flexible wire group.

7. The quick-install, large aperture, thin infrared shutter device according to claim 2, wherein: The switching blade includes a first blade and a second blade; the first blade and the second blade are both provided with mounting holes, and the two ends of the large crank handle are correspondingly mounted on the mounting holes on the first blade and the second blade. When the large crank handle rotates, the first blade and the second blade at both ends are driven to move in opposite directions to cover or open the light hole.

8. The quick-install, large aperture, thin infrared shutter device according to claim 1 or 7, characterized in that: Two groups of positioning columns are protruding from the fixing seat, and two positioning grooves for the positioning columns of each group to extend into are opened on the blade, and the positioning grooves extend along the moving direction of the blade.

9. The quick-install, large aperture, thin infrared shutter device according to claim 8, wherein: A front cover is further provided on the front of the fixing seat. A limiting hole corresponding to the position of the positioning column is provided on the front cover. The front cover is fixedly mounted on the fixing seat.

10. The quick-install thin infrared shutter device with large aperture according to claim 9, characterized in that: A plurality of supporting parts are protruding from the front of the fixing seat, which are used to support the front cover plate to protect the switching blades.

Images