Shutter structure capable of preventing blades from falling off

Abstract

The invention discloses a blade anti-drop shutter structure, which comprises a square fixed seat, a shutter assembly is arranged on the fixed seat, the shutter assembly comprises a square bottom plate, two pairs of blade groups and a pair of anti-drop separation blades, and each pair of blade groups comprises a main blade, a first auxiliary blade and a second auxiliary blade; a through hole allowing the second positioning shaft to be inserted therein is formed in the anti-falling separation blade; the two pairs of blade groups are mounted between the square bottom plate and the upper cover plate; the two ends of the blade set are limited through the anti-disengagement blocking pieces, and the anti-disengagement blocking pieces and the blades are closed synchronously. Firstly, the coincidence area of the blocking piece and the upper cover or the fixing base is large, and the blocking piece is high in impact resistance and cannot be disengaged; and secondly, the tail of the blade on the side of the separation blade is clamped by the separation blade on each side and the blade on the other side, the deformation of the blades under impact is small, and the head parts of the blades are fixed by the rocking handles and the rotating shafts, so that the two pairs of blade groups are prevented from flying out under impact.

Description

Technical Field

[0001] The present invention relates to the technical field related to infrared camera systems, and in particular to a blade-shaped anti-dropout shutter structure. Background Art

[0002] When the traditional shutter is closed, the overlap between the blades and the cover is small. When the shutter is closed and subjected to impact, the blades will fall out of the cover, causing the shutter to fail. Under the condition that the aperture remains unchanged, the traditional design increases the size of the blades by increasing the shutter shape to prevent the blades from falling out. This results in a larger volume and cannot achieve miniaturization of the product. Summary of the invention

[0003] In order to solve the defects in the prior art, the present invention provides a blade-proof shutter structure.

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

[0005] The present invention discloses a blade anti-dropout shutter structure, comprising a square-shaped fixing seat, a shutter assembly being arranged on the fixing seat, the shutter assembly comprising a square-shaped bottom plate and two pairs of blade groups, each pair of the blade groups comprising a main blade, a first auxiliary blade and a second auxiliary blade; the square-shaped bottom plate is provided with anti-dropout blocking pieces at both ends of the blade group for preventing the main blade, the first auxiliary blade and the second auxiliary blade from dropping out;

[0006] A magnetic valve positioning seat is provided at the bottom of the U-shaped bottom plate, and a first positioning shaft is provided on the magnetic valve positioning seat for positioning the blade heads of the main blade and the first auxiliary blade, and the main blade and the first auxiliary blade rotate as the center of a circle. A second positioning shaft is also provided on the magnetic valve positioning seat for positioning the front end of the second auxiliary blade, and the second auxiliary blade rotates with the second positioning shaft as the center of a circle; the main blade, the first auxiliary blade and the second auxiliary blade are stacked 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 diagonally arranged magnet rocker groups, and the square-shaped bottom plate, the main blade, the first auxiliary blade and the second auxiliary blade are provided with a first arc groove that matches the rocker on the magnet rocker group;

[0008] The anti-slip baffle is provided with a through hole for inserting the second positioning shaft, and the anti-slip baffle is also provided with a second arc groove that cooperates with the crank on the magnetic crank assembly; an upper cover plate is installed on the U-shaped bottom plate, and the two pairs of blade groups are installed between the U-shaped bottom plate and the upper cover plate.

[0009] As a preferred technical solution of the present invention, the two pairs of blade groups are stacked inside and outside, one anti-slip baffle is arranged on the inner side of the innermost blade group, and the other anti-slip baffle is arranged on the outer side of the outermost blade group.

[0010] As a preferred technical solution of the present invention, the fixing seat is provided with a mounting cavity for installing the shutter assembly.

[0011] As a preferred technical solution of the present invention, an iron core wire package group driving the magnet crank group is fixed on the magnetic valve positioning seat, and an FPC board connected to the iron core wire package group is fixed on the magnetic valve positioning seat.

[0012] As a preferred technical solution of the present invention, both end portions of the main blade, the first auxiliary blade and the second auxiliary blade are provided with bending portions, 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 solution of the present invention, a protruding limit plate is provided on the axial side of the upper cover plate, and a slot for the limit plate to be inserted into is provided on the retaining seat. When the limit plate is inserted into the slot, the upper cover plate is suspended in the air and does not contact the outermost anti-slip baffle.

[0014] As a preferred technical solution of the present invention, the upper cover plate is provided with avoidance holes for avoiding the crank handle, the first positioning shaft and the second positioning shaft on the magnetic crank handle assembly.

[0015] As a preferred technical solution of the present invention, both ends of the main blade, the first auxiliary blade and the second auxiliary blade move in a limiting cavity formed by two anti-slip baffles.

[0016] The beneficial effects of the present invention are:

[0017] 1. The U-shaped bottom plate in this blade anti-detachment shutter structure is characterized in that both ends of the blade group 4 are provided with anti-detachment baffles for preventing the two ends of the main blade, the first auxiliary blade and the second auxiliary blade from detaching, so that when the magnetic crank 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, so that when the shutter is opened, the anti-detachment baffles and the blades are opened together without affecting the size of the light hole; when the shutter is closed, the anti-detachment baffles and the blades are closed synchronously, and the main blade, the first auxiliary blade and the second auxiliary blade are stacked on the first auxiliary blade and the second auxiliary blade, and do not collide with each other when closed, thus avoiding the anti-detachment baffles and the blades from colliding.

[0018] 2. With this blade-proof shutter structure, when the shutter is closed, a baffle on one side increases the supporting area of ​​the tail of the blade on one side of the anti-slip baffle, and at the same time, the anti-slip baffle and the head of the other side blade clamp the tail of one side blade, effectively preventing the shutter from falling out during actuation, solving the current problem of blade falling out when designing a shutter with a large light aperture, and can greatly increase the aperture of the light aperture under the same shutter appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of a blade-proof shutter structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the installation of a structural anti-slipping baffle of a blade anti-slipping shutter structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of a first arc-shaped groove of a blade anti-dropout shutter structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the installation of a magnet crank assembly of a blade anti-dropout shutter structure of the present invention;

[0024] Figure 5 It is a structural schematic diagram of a magnetic valve positioning seat of a blade anti-slip shutter structure of the present invention;

[0025] Figure 6 It is a structural schematic diagram of an anti-slipping blocking piece of a blade anti-slipping shutter structure of the present invention;

[0026] Figure 7 It is a schematic diagram of another structural form of an anti-slipping blocking piece of a blade anti-slipping shutter structure of the present invention.

[0027] In the figure: 1. fixing seat; 2. shutter assembly; 3. U-shaped bottom plate; 4. blade group; 401. main blade; 402. first auxiliary blade; 403. second auxiliary blade; 5. magnetic valve positioning seat; 6. first positioning axis; 7. second positioning axis; 8. magnet crank handle group; 9. anti-slip baffle; 10. through hole; 11. first arc groove; 12. upper cover plate; 14. core wire package group; 15. FPC board; 16. limit plate; 17. slot; 18. avoidance hole; 19. second arc groove. DETAILED DESCRIPTION

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

[0029] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a blade anti-dropping shutter structure of the present invention comprises a square-shaped fixing seat 1, a shutter assembly 2 is arranged on the fixing seat 1, the shutter assembly 2 comprises a square-shaped bottom plate 3 and two pairs of blade groups 4, each pair of the blade groups 4 comprises a main blade 401, a first auxiliary blade 402 and a second auxiliary blade 403;

[0030] A magnetic valve positioning seat 5 is provided at the bottom of the U-shaped bottom plate 3, and a first positioning shaft 6 for positioning the blade heads of the main blade 401 and the first auxiliary blade 402 is provided on the magnetic valve positioning seat 4, and the main blade 401 and the first auxiliary blade 402 rotate with the first positioning shaft 6 as the center of the circle, and a second positioning shaft 7 for positioning the front end of the second auxiliary blade 403 is also provided on the magnetic valve positioning seat 4, 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 stacked on the first auxiliary blade 402 and the second auxiliary blade 403, and do not collide with each other when closed.

[0031] The magnetic valve positioning seat 5 is provided with two diagonally arranged magnet crank sets 8, and the square-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 groove 11 that matches the crank on the magnet crank set 4;

[0032] The U-shaped bottom plate 3 is provided with anti-detachment baffles 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 detaching, and the anti-detachment baffle 9 is provided with a through hole 10 for inserting the second positioning shaft 7, and the anti-detachment baffle 9 is also provided with a second arc groove 19 that cooperates with the crank on the magnetic crank group 4; an upper cover plate 12 is installed on the U-shaped bottom plate 3, and two pairs of the blade groups 4 are installed between the U-shaped bottom plate 3 and the upper cover plate 12. The U-shaped bottom plate 3 is provided with anti-detachment baffles 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 detaching. In this way, when the magnetic crank 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. In this way, when the shutter is opened, the anti-detachment baffle 9 opens together with the blades without affecting the size of the light hole; when the shutter is closed, the anti-detachment baffle 9 and the blades are closed synchronously, and the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 are stacked on the first auxiliary blade 402 and the second auxiliary blade 403, and do not collide with each other when closed, thereby avoiding the anti-detachment baffle 9 and the blades from colliding.

[0033] Among them, the two pairs of blade groups 4 are stacked inside and outside, one anti-slip baffle 9 is arranged on the inner side of the innermost blade group 4, and the other anti-slip baffle 9 is arranged on the outer side of the outermost blade group 4, so that the two ends of the blade group 4 have a good anti-slip effect. When the shutter is closed, the baffle on one side increases the supporting area of ​​the tail of the blade on one side of the anti-slip baffle, and at the same time, the anti-slip baffle and the head of the other side blade clamp the tail of one side of the blade, effectively preventing the shutter from falling out during actuation, solving the current problem of blade falling out when designing a shutter with a large light aperture, and can greatly increase the aperture of the light aperture under the same shutter appearance.

[0034] The fixing seat 1 is provided with an installation cavity for the shutter assembly 2 to be installed, so that the installation is convenient.

[0035] An iron core wire package group 14 for driving the magnetic crank handle group 4 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, wherein the FPC board is connected to the external control module, and the iron core wire package group 14 generates magnetic attraction by energizing, thereby driving the magnetic crank handle group, thereby driving the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 to expand or contract.

[0036] Among them, both 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 a U-shaped structure, so that both end portions of the blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 can move in the limiting cavity formed by the two anti-slip baffles 9, thereby having a better anti-slip effect.

[0037] Among them, a protruding limit plate 16 is provided on the axial side of the upper cover plate 12, and a slot 17 for the limit plate 16 to be inserted into is provided on the retaining seat 1. When the limit plate 16 is inserted into the slot 17, the upper cover plate 12 is suspended in the air and does not contact the outermost anti-slip baffle 6, which facilitates the expansion and contraction of the blades.

[0038] The upper cover plate is provided with an avoidance hole 18 for avoiding the crank on the magnet crank assembly 4, 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 cavity formed by the two anti-slip baffles 9.

[0039] like Figure 7 As shown, another form of the present invention is as follows Figure 7 The anti-slip baffle plate 9 is also provided with a second arc groove 19 that cooperates with the crank on the magnet crank assembly 4; and the anti-slip baffle plate 9 is provided with a through hole for the second positioning shaft 7 to be inserted.

[0040] Working principle: The U-shaped bottom plate 3 is characterized in that both ends of the blade group 4 are provided with anti-slip baffles 9 for preventing the two ends of the main blade 401, the first auxiliary blade 402 and the second auxiliary blade 403 from slipping off. In this way, when the magnetic crank 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. In this way, when the shutter is opened, the anti-slip baffle 9 and the blades are opened together without affecting the size of the light hole; when the shutter is closed, the anti-slip baffle 9 and the blades are closed synchronously; when the shutter is closed, the baffle on one side increases the supporting area of ​​the tail of the blade on one side of the anti-slip baffle, and at the same time, the anti-slip baffle and the head of the other side blade clamp the tail of one side of the blade, effectively preventing the shutter from slipping off during actuation, solving the problem of blade slipping off when designing a shutter with a large light aperture, and can greatly increase the aperture of the light aperture under the same shutter shape.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A blade anti-drop shutter structure, characterized in that: The invention comprises a U-shaped fixing seat (1), wherein a shutter assembly (2) is arranged on the fixing seat (1), 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 square-shaped bottom plate (3); a first positioning shaft (6) is provided on the magnetic valve positioning seat (4) for positioning the blade heads of the main blade (401) and the first auxiliary blade (402); 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 (4) 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 magnet crank sets (8), and the square-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 crank on the magnet crank set (4); The anti-slip block piece (9) is provided with a through hole (10) for inserting the second positioning shaft (7), and the anti-slip block piece (9) is also provided with a second arc groove (19) that cooperates with the crank on the magnet crank assembly (4); an upper cover plate (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 plate (12).

2. A blade-proof 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 piece (9) is arranged on the inner side of the innermost blade group (4), and the other anti-slip block piece (9) is arranged on the outer side of the outermost blade group (4).

3. The blade-proof 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-proof shutter structure according to claim 1, characterized in that: An iron core wire package group (14) for driving a magnetic rocker group (4) 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-proof shutter structure according to claim 2, characterized in that: Both 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 a U-shaped structure.

6. The blade-proof 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 inserted into is provided on the retaining seat (1). When the limiting plate (16) is inserted into the slot (17), the upper cover plate (12) is suspended in the air and does not contact the outermost anti-slip baffle (6).

7. The blade-proof 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 magnet crank assembly (4), the first positioning shaft (6) and the second positioning shaft.

8. The blade-proof 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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