A leaf anti-deformation shutter structure

Abstract

The application discloses a leaf anti-dropping shutter structure, which comprises a fixed base in the shape of an oral character, a shutter assembly provided on the fixed base, the shutter assembly comprising an oral character-shaped bottom plate and two pairs of leaf groups and a pair of anti-dropping stop flaps, each pair of the leaf groups comprising a main leaf, a first auxiliary leaf and a second auxiliary leaf, and the anti-dropping stop flaps being provided with through holes for inserting second positioning shafts, the two pairs of the leaf groups being installed between the oral character-shaped bottom plate and an upper cover plate, and the anti-dropping stop flaps limiting the two ends of the leaf groups, and the anti-dropping stop flaps and the leaves being closed synchronously. Firstly, the stop flaps have a large overlapping area with the upper cover or the fixed base, the stop flaps have strong impact resistance and cannot be dropped out; secondly, the stop flaps on each side clamp the tail portions of the side leaves of the other side leaves, the leaves have small deformation under impact, and the head portions of the leaves are fixed by a handle and a rotating shaft, so that the two pairs of leaf groups are prevented from flying out under impact.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of infrared camera systems, and particularly relates to a shutter structure with blade anti-disengagement. BACKGROUND

[0002] When a traditional shutter is closed, the amount of overlap between the shutter blades and the cover plate is small, and when the shutter is closed and subjected to an impact, the shutter blades will disengage from the cover plate, resulting in shutter failure. In order to prevent the shutter blades from disengaging, the size of the shutter blades is increased by increasing the size of the shutter in the traditional design under the condition that the aperture remains unchanged. This results in a large size, which cannot achieve miniaturization of the product. SUMMARY

[0003] In order to solve the defects in the prior art, the present application provides a shutter structure with blade anti-disengagement.

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

[0005] The shutter structure with blade anti-disengagement comprises a fixed seat in the shape of a mouth, a shutter assembly is arranged on the fixed seat, the shutter assembly comprises a bottom plate in the shape of a mouth and two pairs of blade groups, each pair of blade groups comprises a main blade, a first auxiliary blade and a second auxiliary blade, and the bottom plate in the shape of a mouth is provided with anti-disengagement stop pieces for preventing the two ends of the main blade, the first auxiliary blade and the second auxiliary blade from disengaging at the two ends of the blade groups.

[0006] The bottom of the bottom plate in the shape of a mouth is provided with a magnetic valve positioning seat, the magnetic valve positioning seat is provided with a first positioning shaft for positioning the blade head of the main blade and the first auxiliary blade, the main blade and the first auxiliary blade rotate around the center of the circle, the magnetic valve positioning seat is further provided with a second positioning shaft for positioning the front end of the second auxiliary blade, and the second auxiliary blade rotates around the second positioning shaft as the center of the circle, the main blade, the first auxiliary blade and the second auxiliary blade are in a stacked state on the first auxiliary blade and the second auxiliary blade, and do not collide with each other when closed.

[0007] The magnetic valve positioning seat is provided with two magnetic stone cranks arranged diagonally, and the bottom plate in the shape of a mouth, the main blade, the first auxiliary blade and the second auxiliary blade are provided with first arc-shaped grooves matched with the cranks on the magnetic stone crank groups.

[0008] The anti-disengagement stop piece is provided with a through hole for the second positioning shaft to insert, and the anti-disengagement stop piece is further provided with a second arc-shaped groove matched with the cranks on the magnetic stone crank groups, an upper cover plate is mounted on the bottom plate in the shape of a mouth, and the two pairs of blade groups are mounted between the bottom plate in the shape of a mouth and the upper cover plate.

[0009] As a preferred technical scheme of the present application, the two pairs of blade groups are arranged in an inner-outer stacking mode, one anti-falling baffle is arranged on the inner side of the innermost blade group, and the other anti-falling baffle is arranged on the outer side of the outermost blade group.

[0010] As a preferred technical scheme of the present application, the fixing seat is provided with a mounting cavity for accommodating the shutter assembly.

[0011] As a preferred technical scheme of the present application, the magnetic valve positioning seat is fixed with a core wire package group of the driving magnet handle group, and the magnetic valve positioning seat is fixed with an FPC plate connected with the core wire package group.

[0012] As a preferred technical scheme of the present application, the two ends of the main blade, the first auxiliary blade and the second auxiliary blade are provided with bending parts, so that the main blade, the first auxiliary blade and the second auxiliary blade are in a U-shaped structure.

[0013] As a preferred technical scheme of the present application, the shaft side of the upper cover plate is provided with a protruding limiting plate, and the fixing seat is provided with a clamping groove for clamping the limiting plate, so that when the limiting plate is clamped into the clamping groove, the upper cover plate is suspended and does not contact the outermost anti-falling baffle.

[0014] As a preferred technical scheme of the present application, the upper cover plate is provided with avoiding holes for avoiding the handle, the first positioning shaft and the second positioning shaft on the magnet handle group.

[0015] As a preferred technical scheme of the present application, the two ends of the main blade, the first auxiliary blade and the second auxiliary blade move in the limiting cavities formed by the two anti-falling baffles.

[0016] The present application has the following advantages:

[0017] 1. The anti-falling shutter structure of the present application is characterized in that the two ends of the blade group 4 are provided with anti-falling baffles for preventing the two ends of the main blade, the first auxiliary blade and the second auxiliary blade from falling, so that when the magnet handle group drives the main blade, the first auxiliary blade and the second auxiliary blade to expand or contract, the two ends of the main blade, the first auxiliary blade and the second auxiliary blade are limited, and when the shutter is opened, the anti-falling baffles and the blades are opened together, without affecting the size of the light passage; when the shutter is closed, the anti-falling baffles and the blades are closed synchronously, the main blade, the first auxiliary blade and the second auxiliary blade are in a stacked state on the first auxiliary blade and the second auxiliary blade, and do not collide with each other when closed, so that the anti-falling baffles and the blades are prevented from colliding.

[0018] 2. The leaf anti-extraction shutter structure, when the shutter is closed, one side of the blocking piece increases the anti-extraction blocking piece side leaf tail support area, and the anti-extraction blocking piece and the other side of the leaf head clamps the side of the leaf tail, effectively preventing the shutter from being extracted when it is actuated, solving the problem of leaf extraction when designing a large light port shutter, and greatly increasing the aperture of the light port under the same shutter appearance. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and are used to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0020] Figure 1 is a structural schematic diagram of a leaf anti-extraction shutter structure of the present application;

[0021] Figure 2 is a structural anti-extraction blocking piece installation schematic diagram of a leaf anti-extraction shutter structure of the present application;

[0022] Figure 3 is a structural schematic diagram of a first arc-shaped groove of a leaf anti-extraction shutter structure of the present application;

[0023] Figure 4 is a magnet handle group installation schematic diagram of a leaf anti-extraction shutter structure of the present application;

[0024] Figure 5 is a structural schematic diagram of a magnetic valve positioning seat of a leaf anti-extraction shutter structure of the present application;

[0025] Figure 6 is a structural schematic diagram of an anti-extraction blocking piece of a leaf anti-extraction shutter structure of the present application;

[0026] Figure 7 is another form of a structural schematic diagram of an anti-extraction blocking piece of a leaf anti-extraction shutter structure of the present application.

[0027] In the drawings: 1, fixed seat; 2, shutter assembly; 3, square bottom plate; 4, leaf group; 401, main leaf; 402, first auxiliary leaf; 403, second auxiliary leaf; 5, magnetic valve positioning seat; 6, first positioning shaft; 7, second positioning shaft; 8, magnet handle group; 9, anti-extraction blocking piece; 11, first arc-shaped groove; 12, upper cover plate; 14, iron core wire package group; 15, FPC board; 16, limiting plate; 17, clamping groove; 18, avoiding hole; 19, second arc-shaped groove. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application are described below in conjunction with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not limit the present application.

[0029] Embodiment: As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the present application is a leaf-shaped shutter structure, comprising a fixed seat 1 in the shape of a square mouth, the fixed seat 1 is provided with a shutter assembly 2, the shutter assembly 2 comprises a square mouth-shaped bottom plate 3 and two pairs of leaf groups 4, each pair of leaf groups 4 comprises a main leaf 401, a first auxiliary leaf 402 and a second auxiliary leaf 403;

[0030] The bottom of the square mouth-shaped bottom plate 3 is provided with a magnetic valve positioning seat 5, the magnetic valve positioning seat 5 is provided with a first positioning shaft 6 for positioning the leaf head of the main leaf 401 and the first auxiliary leaf 402, the main leaf 401 and the first auxiliary leaf 402 rotate around the first positioning shaft 6 as the center, the magnetic valve positioning seat 5 is also provided with a second positioning shaft 7 for positioning the front end of the second auxiliary leaf 403, and the second auxiliary leaf 403 rotates around the second positioning shaft 7 as the center; the main leaf 401, the first auxiliary leaf 402 and the second auxiliary leaf 403 on the first auxiliary leaf 402 and the second auxiliary leaf 403 are in a stacked state, and do not collide with each other when closed.

[0031] The magnetic valve positioning seat 5 is provided with two diagonal magnetic stone handle groups 8, the square mouth-shaped bottom plate 3, the main leaf 401, the first auxiliary leaf 402 and the second auxiliary leaf 403 are provided with a first arc-shaped groove 11 matched with the handle of the magnetic stone handle group 8;

[0032] The mouth-shaped base plate 3 is provided with anti-falling blocks 9 at both ends of the blade group 4 for preventing the two ends of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 from falling off, and the anti-falling blocks 9 are provided with through holes for the second positioning shaft 7 to insert, and the anti-falling blocks 9 are also provided with second arc-shaped grooves 19 matched with the handles on the magnet handle group 8; the upper cover plate 12 is installed on the mouth-shaped base plate 3, and two pairs of blade groups 4 are installed between the mouth-shaped base plate 3 and the upper cover plate 12. The mouth-shaped base plate 3 is provided with anti-falling blocks 9 at both ends of the blade group 4 for preventing the two ends of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 from falling off, so that when the magnet handle group 8 drives the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 to expand or shrink, the two ends of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 are limited, so that when the shutter is opened, the anti-falling blocks 9 and the blades are opened together, which does not affect the size of the light passing hole; when the shutter is closed, the anti-falling blocks 9 and the blades are closed synchronously, the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 are in a stacked state on the first auxiliary blade 402 and the second auxiliary blade 403, and do not collide with each other when closed, so that the anti-falling blocks 9 and the blades are prevented from colliding.

[0033] Among them, two pairs of blade groups 4 are arranged in an inside-out stacking manner, one anti-falling block 9 is arranged on the inner side of the innermost blade group 4, and the other anti-falling block 9 is arranged on the outer side of the outermost blade group 4, so that the two ends of the blade group 4 are prevented from falling off, when the shutter is closed, one side of the anti-falling block increases the supporting area of the blade tail on one side, and the anti-falling block and the other side of the blade head clamp the blade tail on one side, effectively preventing the shutter from falling off when it is actuated, solving the problem of blade falling off when designing a shutter with a large light passing hole, and greatly increasing the aperture of the light passing hole under the same shutter shape.

[0034] The fixed seat 1 is provided with a mounting cavity for the shutter assembly 2 to be installed, so as to facilitate installation.

[0035] The magnetic valve positioning seat 5 is fixed with an iron core wire package group 14 driving the magnet handle group 8, and the magnetic valve positioning seat 5 is fixed with an FPC plate 15 connected with the iron core wire package group 14, wherein the FPC plate is connected with an external control module, and the iron core wire package group 14 generates magnetic attraction by electrification, so as to drive the magnet handle group, thereby driving the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 to expand or shrink.

[0036] The two end portions of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 are provided with bending portions, so that the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 are in U-shaped structure, so that the two end portions of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 move in the limiting cavities formed by the two anti-falling flaps 9, thereby having better anti-falling effect.

[0037] The limiting plate 16 is provided on the shaft side of the upper cover plate 12, and the fixing base 1 is provided with a clamping groove 17 for clamping the limiting plate 16, so that when the limiting plate 16 is clamped into the clamping groove 17, the upper cover plate 12 is suspended and does not contact the outermost anti-falling flap 9, thereby facilitating the unfolding and contraction of the blades.

[0038] The upper cover plate is provided with an avoiding hole 18 for avoiding the handle on the magnet handle group 8, the first positioning shaft 6 and the second positioning shaft. The two ends of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 move in the limiting cavities formed by the two anti-falling flaps 9.

[0039] As shown in Figure 7 Another form of the present application is shown in Figure 7 The anti-falling flap 9 is further provided with a second arc-shaped groove 19 matched with the handle on the magnet handle group 8, and the anti-falling flap 9 is provided with a through hole for inserting the second positioning shaft 7.

[0040] Working principle: The H-shaped bottom plate 3 is provided with anti-falling flaps 9 at the two ends of the blade group 4 for preventing the two ends of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 from falling off, so that when the magnet handle group 8 drives the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 to expand or contract, the two ends of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 are limited, so that when the shutter is opened, the anti-falling flaps 9 and the blades are opened together, without affecting the size of the light passing hole; when the shutter is closed, the anti-falling flaps 9 and the blades are closed synchronously; when the shutter is closed, the anti-falling flaps increase the support area of the blade tail on one side, and the anti-falling flaps and the blade head on the other side clamp the blade tail on one side, effectively preventing the shutter from falling off when it is actuated, solving the problem of blade falling off when designing a shutter with a large light passing hole, and greatly increasing the aperture of the light passing hole under the same shutter shape.

[0041] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent ones. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A blade anti-slip shutter structure, characterized in that: The invention comprises a U-shaped fixing seat (1), wherein the fixing seat (1) is provided with a shutter assembly (2), wherein the shutter assembly (2) comprises a U-shaped bottom plate (3) and two pairs of blade groups (4), wherein each pair of the blade groups (4) comprises a main blade (401), a first auxiliary blade (402), and a second auxiliary blade (403); the U-shaped bottom plate (3) is provided with anti-detachment blocking pieces (9) at both ends of the blade group (4) for preventing the main blade (401), the first auxiliary blade (402), and the second auxiliary blade (403) from detaching; A magnetic valve positioning seat (5) is provided at the bottom of the U-shaped bottom plate (3), and a first positioning shaft (6) is provided on the magnetic valve positioning seat (5) for positioning the blade heads of the main blade (401) and the first auxiliary blade (402), and the main blade (401) and the first auxiliary blade (402) rotate with the first positioning shaft (6) as the center of the circle. A second positioning shaft (7) is also provided on the magnetic valve positioning seat (5) for positioning the front end of the second auxiliary blade (403), and the second auxiliary blade (403) rotates with the second positioning shaft (7) as the center of the circle; the main blade (401), the first auxiliary blade (402) and the second auxiliary blade (403) are in a stacked state on the first auxiliary blade (402) and the second auxiliary blade (403), and do not collide with each other when closed; The magnetic valve positioning seat (5) is provided with two diagonally arranged magnetic rocker groups (8), and the U-shaped bottom plate (3), the main blade (401), the first auxiliary blade (402), and the second auxiliary blade (403) are provided with a first arc-shaped groove (11) that cooperates with the rocker on the magnetic rocker group (8); The anti-slip block (9) is provided with a through hole for inserting the second positioning shaft (7), and the anti-slip block (9) is also provided with a second arc groove (19) that cooperates with the crank on the magnet crank assembly (8); an upper cover (12) is installed on the U-shaped bottom plate (3), and the two pairs of blade assemblies (4) are installed between the U-shaped bottom plate (3) and the upper cover (12).

2. The blade-shaped anti-drop shutter structure according to claim 1, characterized in that: The two pairs of blade groups (4) are stacked inside and outside, one anti-slip block (9) is arranged on the inner side of the innermost blade group (4), and the other anti-slip block (9) is arranged on the outer side of the outermost blade group (4).

3. The blade-shaped anti-drop shutter structure according to claim 1, characterized in that: The fixing seat (1) is provided with a mounting cavity for mounting the shutter assembly (2).

4. The blade-shaped anti-slip shutter structure according to claim 1, characterized in that: An iron core wire package group (14) for driving a magnet crank assembly (8) is fixed on the magnetic valve positioning seat (5), and an FPC board (15) connected to the iron core wire package group (14) is fixed on the magnetic valve positioning seat (5).

5. The blade-shaped anti-slip shutter structure according to claim 2, characterized in that: Both ends of the main blade (401), the first auxiliary blade (402) and the second auxiliary blade (403) are provided with bending portions, so that the main blade (401), the first auxiliary blade (402) and the second auxiliary blade (403) are in a U-shaped structure.

6. The blade-shaped anti-drop shutter structure according to claim 1, characterized in that: A protruding limiting plate (16) is provided on the axial side of the upper cover plate (12), and a slot (17) for the limiting plate (16) to be snapped into is provided on the fixing seat (1). When the limiting plate (16) is snapped into the slot (17), the upper cover plate (12) is suspended in the air and does not contact the outermost anti-slip baffle (9).

7. The blade-shaped anti-drop shutter structure according to claim 1, characterized in that: The upper cover plate (12) is provided with an avoidance hole (18) for avoiding the crank on the magnetic crank assembly (8), the first positioning shaft (6), and the second positioning shaft.

8. The blade-shaped anti-drop shutter structure according to claim 1, characterized in that: The two ends of the main blade (401), the first auxiliary blade (402) and the second auxiliary blade (403) move in the limiting cavity formed by the two anti-slip blocking pieces (9).

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