Self-locking shutter and infrared imaging system

Abstract

The invention discloses a self-locking shutter and an infrared imaging system, and relates to the technical field of infrared imaging, and the self-locking shutter comprises a housing and a driving member; the rotating piece comprises a rotating shaft rotationally connected to the swinging part; the blades are rotationally connected to the rotating shaft to achieve opening and closing, the blades and the swing part are each provided with a first position A and a second position B, and when the opening and closing states of the blades are switched, the rotating shaft moves to the second position B from the first position A and moves to the first position A again; when the driving piece is in a standby state, first positions A corresponding to the blades and the swing part can limit deflection of the blades; when the driving piece is in the starting state, the swing part drives the rotating shaft to rotate in the preset direction so as to be unlocked from the first position A, and the rotating shaft rotates to drive the blades to rotate in the direction opposite to the preset direction till the rotating shaft moves to the first position A again. And through the arrangement of the first position A, the blades can be reliably kept in the opening state and the closing state, and the deviation condition caused by vibration impact is avoided.

Description

Technical Field

[0001] The present invention relates to the field of infrared imaging technology, and more specifically, to a self-locking shutter. In addition, the present invention also relates to an infrared imaging system including the above self-locking shutter. Background Art

[0002] The infrared imaging shutter is one of the essential components in the infrared imaging system, which is used to correct and eliminate the influence of the non-uniformity of the infrared focal plane array. During the actual application process, the blades of the infrared imaging shutter rotate to achieve the switching of the opening and closing states. However, in the case of impact and vibration, the holding force of the blades is insufficient, and the opening and closing states will change, thus limiting the application scenarios of the shutter.

[0003] In summary, how to avoid the change of the opening and closing states of the blades under the condition of impact and vibration is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a self-locking shutter, which can avoid the change of the opening and closing states of the blades under the condition of impact and vibration, make the application scenarios of the shutter more extensive, and improve the applicability. Another purpose of the present invention is to provide an infrared imaging system including the above self-locking shutter.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A self-locking shutter, comprising:

[0007] A housing;

[0008] A driving member, rotatably connected to the housing and provided with a swinging portion;

[0009] A rotating member, provided with a rotating shaft rotatably connected to the swinging portion;

[0010] A blade, rotatably connected to the rotating shaft to achieve opening and closing. Both the blade and the swinging portion are provided with a first position A and a second position B. When the opening and closing states of the blade are switched, the rotating shaft moves from the first position A to the second position B and then moves back to the first position A;

[0011] When the driving member is in the standby state, the first positions A corresponding to the blade and the swinging portion can cooperate with the rotating shaft to limit the deflection of the blade;

[0012] When the driving member is in the starting state, the swinging portion drives the rotating shaft to rotate in a preset direction to unlock from the first position A, and the rotation of the rotating shaft can drive the blade to rotate in a direction opposite to the preset direction until the rotating shaft moves back to the first position A again.

[0013] Preferably, the housing is provided with an arc-shaped groove, the opening of the arc-shaped groove is arranged towards the rotation center of the driving member, and the two ends of the arc-shaped groove are respectively provided with a first limiting portion and a second limiting portion for restricting the deflection of the blade. When the rotating shaft is in the first position A, it is located at the first limiting portion or the second limiting portion of the arc-shaped groove.

[0014] Preferably, the housing is provided with a fixed shaft for the rotation of the blade, and the included angle formed by the connection line between the center of the rotating shaft and the center of the rotating portion rotatably connected to the housing and the connection line between the center of the rotating shaft and the center of the fixed shaft is an acute angle;

[0015] The included angle formed by the connection line between the center of the rotating shaft and the center of the rotating portion rotatably connected to the housing and the connection line between the center of the rotating shaft and the center of the main body rotatably connected to the housing is an acute angle.

[0016] Preferably, a first long slot is provided on one side of the blade close to the swinging portion, and the first position A and the second position B are correspondingly provided at both ends of the first long slot;

[0017] The swinging portion is provided with a second long slot close to the first long slot, and the first position A and the second position B are correspondingly provided at both ends of the second long slot.

[0018] Preferably, one end of the swinging portion is connected to the main body, and the other end of the swinging portion is connected to the rotating shaft;

[0019] The length of the connection line between the center of the connection portion between the swinging portion and the main body and the center of the rotating shaft is a first length, and the length of the connection line between the center of the rotating shaft and the center of the rotating portion is a second length. The first length is greater than the second length.

[0020] Preferably, at least one of the blades is provided on each of the two relatively arranged sides of the housing, and the blades on the two opposite sides of the housing can approach or move away from each other under the action of the driving members on the corresponding sides to realize the switching of the opening and closing states.

[0021] Preferably, at least two of the blades are provided on the same side of the housing and are distributed along the height direction thereof. A rotating groove rotatably connected to the corresponding fixed shaft of the other is provided between any two adjacent blades. Along the height direction of the housing, the lengths of the first long slots respectively provided on at least two of the blades increase or decrease.

[0022] Preferably, the opening direction of the rotating groove is arranged away from the swinging portion, and the two ends of the rotating groove correspond to a third limiting portion and a fourth limiting portion. When the rotating shaft is in the first position A, the fixed shaft arranged in the rotating groove is located at the third limiting portion or the fourth limiting portion.

[0023] Preferably, the center of the fixed shaft, the center of the connection portion between the swinging portion and the main body, and the center of the rotating portion respectively corresponding to at least two of the blades located on the same side of the housing are located on the same straight line.

[0024] The present invention also provides an infrared imaging system, comprising any one of the self-locking shutters described above.

[0025] The self-locking shutter provided by the present invention includes a shell, a driving member, a rotating member and a blade, wherein the driving member is rotatably connected to the shell and is provided with a swinging part, and the driving member has a locked state and an unlocked state; the rotating member is provided with a rotating shaft rotatably connected to the swinging part, and the blade is opened and closed by being connected to the rotating shaft by rotation; the swinging part and the blade are both provided with a first position and a second position, wherein when the driving member is in the standby state, the swinging part, the rotating shaft and the blade are all unable to rotate, and the rotating shaft is in the first position of the swinging part and the blade, and the deflection of the blade is limited by the rotating shaft being in the first position, thereby avoiding the movement of the blade under the condition of impact vibration, etc.; when the driving member is in the starting state, the swinging part can drive the rotating shaft to rotate in a preset direction, so that the rotating shaft is unlocked from the first position, and can drive the blade to rotate in the direction opposite to the preset direction until the rotating shaft rotates to the first position again, completing the switching of the blade opening and closing state, and the rotating shaft is still in the first position after the blade state is switched, which can avoid the displacement of the blade under the condition of impact vibration, etc., and ensure that the blade is reliably maintained in the open and closed state.

[0026] The beneficial effects of the present invention are that by setting both the swinging portion and the blades in a first position and a second position, the blades are locked in an open or closed state by the cooperation of the rotating shaft of the rotating member with the first position, thereby achieving bidirectional locking of the blades, preventing deflection of the blades due to deadweight or external forces such as vibration and impact, ensuring sufficient holding force to prevent deflection of the blades, and enabling the shutter to be applied in a wider range of application scenarios, such as in-vehicle applications or other applications with bumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of the self-locking shutter provided by the present invention;

[0029] Figure 2 for Figure 1 Exploded diagram;

[0030] Figure 3 is Figure 1 a schematic diagram of the internal structure;

[0031] Figure 4 is Figure 3 a front view of;

[0032] Figure 5 a schematic diagram of the position of the arc groove provided by the present invention;

[0033] Figure 6 a schematic diagram of the closed and open states of the blade provided by the present invention;

[0034] Figure 7 is Figure 6 a schematic diagram of another perspective of;

[0035] Figure 8 is Figure 7 a top view of;

[0036] Figure 9 a schematic diagram of the structure of the driving member provided by the present invention;

[0037] Figure 10 a schematic diagram of one structure of the blade provided by the present invention;

[0038] Figure 11 a schematic diagram of another structure of the blade provided by the present invention.

[0039] Figures 1 - 11 In, the reference numerals include:

[0040] 1 - cover plate; 2 - outer shell; 3 - first partition; 4 - second partition; 5 - driving member; 6 - germanium window; 7 - fixed shaft; 8 - blade; 9 - rotating member; 10 - magnetic member; 11 - coil;

[0041] 21 - arc groove; 51 - swinging portion; 52 - main body; 53 - second long groove; 81 - rotating groove; 82 - first long groove; 91 - rotating shaft; 92 - rotating portion;

[0042] 211 - first limiting portion; 212 - second limiting portion; 811 - third limiting portion; 812 - fourth limiting portion;

[0043] A - first position; B - second position. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0045] The core of the present invention is to provide a self-locking shutter that can provide a reliable holding force in the open and closed states of the blades, avoid changes in the open and closed states of the blades under impact and vibration, and improve applicability. Another core of the present invention is to provide an infrared imaging system including the above self-locking shutter.

[0046] The self-locking shutter provided by the present invention includes a housing 2, a driving member 5, a rotating member 9, and a blade 8. Please refer to Figure 1 、 Figure 2 。

[0047] The driving member 5 is rotatably connected to the housing 2. Specifically, the driving member 5 is a component that can provide a rotational driving force, such as a manual or automatic rotating wheel, and the automatic one can be specifically realized by electric or magnetic drive.

[0048] In a specific embodiment, the driving member 5 is a magnet pendulum shaft. Specifically, the driving force for the rotation of the driving member 5 comes from the magnetic member 10 provided in cooperation with it, and the coil 11 provided on the magnetic member 10 generates a magnetic field after being energized, and drives the corresponding driving member 5 to rotate through the conduction of the magnetic member 10 to realize providing the power for the switching of the open and closed states of the blade 8. The driving member 5 is provided with a swinging portion 51, and the swinging portion 51 rotates as the driving member 5 rotates.

[0049] Please refer to Figure 3 . The rotating member 9 is provided with a rotating shaft 91 disposed off its center. The center of the rotating member 9 is the center of the rotating portion 92. The rotating portion 92 of the rotating member 9 is rotatably connected to the housing 2, and the rotating shaft 91 is rotatably connected to the swinging portion 51. By the rotation of the swinging portion 51, the rotating shaft 91 can be driven to rotate around the center of the rotating portion 92, and further drive the blade 8 to rotate to realize the switching of the open and closed states.

[0050] Among them, the closing of the blade 8 can help with calibration and correction. Specifically, the blade 8 needs to be closed at intervals. When closed, it corresponds to the calibration and correction of the infrared focal plane array. After correction, the blade 8 is opened again to allow light to enter for imaging. Please refer to Figure 6 、 Figure 7 . Both the swinging portion 51 and the blade 8 are provided with a first position A and a second position B. In the state of the first position A, the blade 8 is in a locked state, and in the state of the second position B, the blade 8 is in a free state.

[0051] The rotating shaft 91 passes through the swinging part 51 and the blade 8. When the shutter is in the fully open or fully closed state, the rotating shaft 91 is located at the first position A corresponding to the swinging part 51 and the blade 8 respectively, and the blade 8 is locked; during the process of switching between the open and closed states of the shutter, the blade 8 is unlocked, and the rotating shaft 91 will pass through the second position B corresponding to the swinging part 51 and the blade 8 respectively.

[0052] Specifically, when the driving member 5 is in the standby state, the first position A corresponding to the blade 8 and the swinging part 51 can limit the deflection of the blade 8; the standby state here means the state where the driving member 5 does not operate and cannot provide driving force.

[0053] When the driving member 5 is in the starting state, the swinging part 51 drives the rotating shaft 91 to rotate in a preset direction to unlock from the first position A. The rotation of the rotating shaft 91 can drive the blade 8 to rotate in the direction opposite to the preset direction until the rotating shaft 91 moves to the first position A again. The starting state here means the state where the driving member 5 can provide driving force.

[0054] Furthermore, when the driving member 5 is in the starting state, it corresponds to being able to provide driving forces in two opposite directions, such as the driving member 5 rotating forward and backward, so as to be able to reliably switch the open - closed state of the blade 8 according to the actual situation.

[0055] As Figure 7 shown in the figure, in this state, the blade 8 on the lower left side is in the open state, and the driving member 5 is in the standby state. Under the action of the self - weight of the blade 8 and the action of impact vibration and other forces, the blade 8 has a tendency to rotate clockwise. However, in this state, the rotating shaft 91 is at the first position A of the swinging part 51 and the blade 8. Under the action of the first position A, the blade 8 cannot rotate clockwise, thus realizing the self - locking of the open state of the blade 8. If it is necessary to unlock from this state, the driving member 5 needs to be started to provide driving force, that is, the coil 11 is powered on, so that the driving member 5 can rotate counterclockwise to drive the rotating shaft 91 to rotate counterclockwise. The counterclockwise rotation of the rotating shaft 91 can drive the blade 8 to rotate clockwise. Specifically, the rotating shaft 91 first unlocks from the first position A and then moves to the second position B and then moves to the first position A again, so that the blade 8 rotates clockwise to the closed state and is still locked by the first position A. Among them, the preset direction can specifically be clockwise or counterclockwise, and the direction opposite to the corresponding preset direction is counterclockwise or clockwise respectively.

[0056] As Figure 6As shown, in this state, the blade 8 on the lower left side is in the closed state, and the driving member 5 is in the standby state. Similarly, under the action of the self-weight of the blade 8 and the acting forces such as impact vibration, the blade 8 has a tendency to rotate counterclockwise. However, in this state, the rotating shaft 91 is at the first position A of the swing portion 51 and the blade 8. Under the action of the first position A, the blade 8 cannot rotate clockwise, thereby realizing the self-locking of the closed state of the blade 8. If it is necessary to unlock from this state, the driving member 5 needs to be started to provide a driving force, that is, the coil 11 is powered on, so that the driving member 5 can rotate clockwise. Specifically, the rotation of the rotating shaft 91 enables it to first unlock through the first position A and then move to the second position B and then move to the first position A again, so that the blade 8 rotates counterclockwise to the open state and is still locked by the first position A.

[0057] In this embodiment, by restricting the distance between the first position A and the second position B, the movement of the rotating shaft 91 when the blade 8 switches between the open and closed states is from the first position A - the second position B - the first position A, so that the blade 8 can be reliably locked when at the first position A, avoiding the situation of deviation.

[0058] In this embodiment, specifically, the first position A can limit the deflection of the blade 8. Based on the fact that after the blade 8 rotates to this position, due to the position limitation of the first position A, the rotating shaft 91 cannot move from the first position A in the direction relatively far from the second position B, so as to be able to provide a reliable holding force to hold the blade 8 in the open state or the closed state.

[0059] In this embodiment, the first position A is the position for locking the blade 8, while the second position B is the position where the blade 8 can rotate in a preset direction as needed when in this position, and it is the transition section for the blade 8 to switch between the open and closed states.

[0060] In this embodiment, by providing the first position A and the second position B on both the swing portion 51 and the blade 8, and locking the open state or the closed state of the blade 8 through the first position A, the two-way locking of the blade 8 can be realized, avoiding the deflection of the blade 8 under the action of self-weight or vibration impact external force, ensuring that there is sufficient holding force to prevent the blade 8 from deflecting, so that the shutter can be applied to more application scenarios. Such as vehicle-mounted scenarios or other forms of application scenarios with bumps.

[0061] On the basis of the above embodiments, please refer to Figure 5 , the housing 2 is provided with an arc-shaped groove 21. The opening of the arc-shaped groove 21 faces the swing portion 51. The two ends of the arc-shaped groove 21 are respectively provided with a first limiting portion 211 and a second limiting portion 212 for restricting the deflection of the blade 8. When the rotating shaft 91 is at the first position A, it is located at the first limiting portion 211 or the second limiting portion 212 of the arc-shaped groove 21.

[0062] The range of the arc-shaped groove 21 corresponds to the rotation range of the blade 8 when switching from the open state to the closed state. For example, if the open state is when the rotating shaft 91 is at the second limiting portion 212, then the closed state is when the rotating shaft 91 is at the first limiting portion 211.

[0063] When the rotating shaft 91 is at the first position A, it is also located at the first limiting portion 211 or the second limiting portion 212; when the rotating shaft 91 is at the second position B, then the rotating shaft 91 is located at a certain position between the first limiting portion 211 and the second limiting portion 212. The specific certain position can be the middle position of the arc-shaped groove 21, corresponding to the position of the rotating shaft 91 in the arc-shaped groove 21 when the rotating shaft 91 moves from the first position A to the second position B.

[0064] In this embodiment, the opening of the arc-shaped groove 21 is arranged towards the rotation center of the driving member 5. As shown in the figure, under the action of the first position A and the second limiting portion 212, the deflection of the blade 8 in the open state can be restricted; under the action of the first position A and the first limiting portion 211, the deflection of the blade 8 in the closed state can be restricted.

[0065] Specifically, as Figure 8 shown, when the blade 8 is in the open state, the blade 8 has a tendency to rotate clockwise. Since the rotating shaft 91 is located in the second limiting portion 212 at this time, the blade 8 cannot continue to rotate clockwise. When the driving member 5 has a driving force, the blade 8 can only rotate counterclockwise, and the rotating shaft 91 moves towards the direction close to the first limiting portion 211 to gradually switch from the open state to the closed state.

[0066] As Figure 8 shown, when the blade 8 is in the closed state, the blade 8 has a tendency to rotate counterclockwise. Since the rotating shaft 91 is located in the first limiting portion 211 at this time, the blade 8 cannot rotate counterclockwise and can only rotate clockwise based on the premise that the driving member 5 has a driving force, and the rotating shaft 91 moves towards the direction close to the second limiting portion 212 to gradually switch from the closed state to the open state.

[0067] In this embodiment, through the setting of the arc-shaped groove 21, it is possible to further cooperate with the first position A to ensure the reliable retention of the blade 8 in the open state or the closed state, ensure the reliable retention force, and avoid the deflection of the blade 8 under the action of external force or its own weight.

[0068] In addition, through the setting of the arc-shaped groove 21, the service life of the blade 8 can also be ensured. This is because when in use, the friction between the rotating shaft 91 and the second position B and the first position A is relatively large, which is likely to damage the blade 8 and the driving member 5. The setting of the arc-shaped groove 21 can provide a guide for the rotation of the rotating shaft 91 to facilitate the movement of the rotating shaft 91 between the second position B and the first position A, reduce the friction on the blade 8 and the swinging portion 51, and ensure the service life of the blade 8 and the swinging portion 51.

[0069] In this embodiment, the radian of the arc-shaped groove 21 can be set to 180 degrees.

[0070] Based on any of the above embodiments, please refer to Figure 5 , a fixed shaft 7 for the rotation of the blade 8 is provided on the housing 2. Here, the fixed shaft 7 is fixedly arranged, and the blade 8 can rotate around this fixed shaft 7 when rotating.

[0071] The included angle formed by the connection line between the center of the rotating shaft 91 and the center of the rotating part 92 rotatably connected to the housing 2, and the connection line between the center of the rotating shaft 91 and the center of the fixed shaft 7 is an acute angle;

[0072] The included angle formed by the connection line between the center of the rotating shaft 91 and the center of the rotating part 92 rotatably connected to the housing 2, and the connection line between the center of the rotating shaft 91 and the center of the main body 52 rotatably connected to the housing 2 is an acute angle.

[0073] As Figure 8 shown, the blade 8 on the upper side is in the closed state, and the blade 8 on the lower side is in the open state.

[0074] Corresponding to Figure 8 , two fixed shafts 7 are provided on the same side, and the centers of the two fixed shafts 7 are E and F respectively. The center of the rotating shaft 91 is C, the rotation center of the rotating part 92 of the rotating member 9 is D, and the center of the main body 52 of the driving member 5 is G.

[0075] When the blade 8 is in the closed state, the included angle formed by CE and CD is an acute angle, and the included angle formed by CF and CD is an acute angle. The blade 8 has a tendency to rotate counterclockwise. Due to the limitation of the first position A and the second limiting portion 212, the blade 8 is locked in the closed state; after the coil 11 is energized and the driving member 5 obtains the driving force, the included angle formed by CG and CD is an acute angle. The driving member 5 will drive the rotating shaft 91 to rotate clockwise through the swinging portion 51, and at the same time, the blade 8 can rotate counterclockwise to realize the switching between the closed and open states of the blade 8.

[0076] When the blade 8 is in the open state, the included angle formed by CE and CD is an acute angle, and the included angle formed by CF and CD is an acute angle. The blade 8 has a tendency to rotate clockwise. Due to the limitation of the first position A and the first limiting portion 211, the blade 8 is locked in the open state; after the coil 11 is energized and the driving member 5 obtains the driving force, the included angle formed by CG and CD is an acute angle. The driving member 5 drives the rotating shaft 91 to rotate counterclockwise through the swinging portion 51, and at the same time, the blade 8 can rotate clockwise to realize the switching between the open and closed states of the blade 8.

[0077] In the above process, it should be noted that the current directions passed by the coil 11 when the blade 8 opens - closes and closes - opens are opposite to realize the bidirectional rotation of the driving member 5.

[0078] Based on any of the above embodiments, please refer to Figure 8 , Figure 10 , Figure 11 , on one side of the blade 8 close to the swing part 51, there is a first long slot 82, and the two ends of the first long slot 82 are respectively provided with a first position A and a second position B; the swing part 51 is provided with a second long slot 53 close to the first long slot 82, and the two ends of the second long slot 53 are respectively provided with a first position A and a second position B.

[0079] In this embodiment, the structures on the blade 8 and the swing part 51 that can form the first position A and the second position B are in the form of long slots.

[0080] In this embodiment, the lengths of the first long slot 82 and the second long slot 53 can be set to be the same or different. Specifically, when the lengths of the first long slot 82 and the second long slot 53 are the same, the rotation ranges of the swing part 51 and the blade 8 are the same; if the lengths of the first long slot 82 and the second long slot 53 are different, the rotation range of the swing part 51 can be smaller or larger than the rotation range of the blade 8. In any case, when the rotating shaft 91 moves to the first position A of the first long slot 82, it must also be located at the first position A of the second long slot 53; when the rotating shaft 91 moves to the second position B of the first long slot 82, it must also be located at the second position B of the second long slot 53.

[0081] In this embodiment, both ends of the first long slot 82 and the second long slot 53 are arc-shaped structures that cooperate with the rotating shaft 91. When the rotating shaft 91 rotates to the arc-shaped structure corresponding to the first position A, the blade 8 can be reliably locked in the closed state / opened state.

[0082] Based on any of the above embodiments, please refer to Figure 9 , the driving member 5 includes a main body 52. One end of the swing part 51 is connected to the main body 52, and the other end of the swing part 51 is connected to the rotating shaft 91. The length of the connection line between the center of the connection part of the swing part 51 and the main body 52 and the center of the rotating shaft 91 is the first length, and the length of the connection line between the center of the rotating shaft 91 and the center of the rotating part 92 is the second length. The first length is greater than the second length.

[0083] The swing part 51 is a long arm extending relative to the main body 52. After the coil 11 is powered on, the main body 52 can be rotated through the magnetic member 10, so that the swing part 51 rotates, and then drives the rotation of the rotating shaft 91.

[0084] Please refer to Figure 8, the center of the connecting part between the swinging part 51 and the main body 52, that is, the center G of the main body 52, the center of the rotating shaft 91 is C, the center of the rotating part 92 is D, the length of GC is the first length L1, and the length of CD is the second length L2. With L1 > L2, in this setting, the relatively small angle of rotation of the swinging part 51 can be amplified to form a larger angle for the two-way self-locking of the blade 8, and at the same time, it does not affect the driving of the rotating shaft 91 by the driving part 5.

[0085] The relatively small angle of rotation of the swinging part 51 is mainly limited by the relatively small driving force generated by electromagnetic induction, which is not sufficient to meet the usage requirements of the two-way locking of the blade 8. Therefore, based on the setting of L1 > L2, the rotating part 9 can be used to amplify the rotation angle of the swinging part 51, so that the swinging part 51 rotates at a small angle to realize the large-angle rotation of the blade 8.

[0086] Based on any of the above embodiments, please refer to Figure 8 , at least one blade 8 is respectively arranged at two opposite positions of the outer shell 2. The blades 8 on the two opposite sides of the outer shell 2 can approach or move away from each other under the action of the driving part 5 on the corresponding side to realize the switching of the opening and closing states.

[0087] As Figure 7 shown, a driving part 5 and a rotating part 9 are respectively arranged on two opposite sides of the outer shell 2, and a rotating groove 81 is arranged at the position corresponding to the outer shell 2. Each blade 8 can realize self-locking in the closed state through the corresponding first position A and the first limiting part 211 of the rotating groove 81; each blade 8 can realize self-locking in the open state through the corresponding first position A and the second limiting part 212 of the rotating groove 81.

[0088] Specifically, at least one blade 8 is respectively arranged on two opposite sides of the outer shell 2. By the relative approach of the blades 8 on both sides, the overall closing of the shutter is realized; by the relative separation of the blades 8 on both sides, the overall opening of the shutter is realized.

[0089] If one blade 8 is respectively arranged on two opposite sides of the outer shell 2, the blade shown in Figure 10 can be used; if two blades 8 are respectively arranged on two opposite sides of the outer shell 2, the two blades shown in Figure 10 and Figure 11 can be used as a group of blades.

[0090] Based on any of the above embodiments, please refer to Figure 7 , at least two blades 8 are arranged on the same side of the outer shell 2 along its height direction. Corresponding at least two fixed shafts 7 are arranged on the outer shell 2 for the rotation of at least two blades 8. The rotation angles of at least two blades 8 are different, and they can act together to cut off the light transmission or can act together to pass the light.

[0091] Any one of the adjacent two blades 8 is provided with a rotating groove 81 rotatably connected to the corresponding fixed shaft 7 of the other. The rotating groove 81 here is the relative rotation range between the adjacent two blades 8. Along the height direction of the housing 2, the lengths of the first long slots 82 respectively arranged on at least two blades 8 increase or decrease, corresponding to different rotation angles of the at least two blades 8. When the driving member 5 drives the rotating shaft 91 to drive at least two blades 8 on the same side to rotate, the blade 8 provided with the longer first long slot 82 can rotate a larger angle relatively.

[0092] Taking a specific embodiment as an example, among the two upper blades 8, the length of the first long slot 82 of the upper blade 8 is greater than that of the lower blade 8, and the rotating groove 81 is arranged on the lower blade 8; among the two lower blades 8, the length of the first long slot 82 of the upper blade 8 is less than that of the lower blade 8, and the rotating groove 81 is arranged on the upper blade 8. The four blades 8 are arranged along the height direction of the housing 2, and the rotations between them do not interfere with each other.

[0093] Based on any of the above embodiments, please refer to Figure 6 、 Figure 7 The opening direction of the rotating groove 81 is set away from the swinging portion 51. The two ends of the rotating groove 81 correspond to the third limiting portion 811 and the fourth limiting portion 812. When the rotating shaft 91 is in the first position A, the fixed shaft 7 arranged in the rotating groove 81 is located at the third limiting portion 811 or the fourth limiting portion 812. It should be noted that the fixed shaft 7 arranged in the rotating groove 81 here is different from the fixed shaft 7 that only provides the function of the rotating shaft of a single blade 8. Specifically, as Figure 6 、 Figure 7 Among the two fixed shafts 7 on the same side in, one is only used as the rotating shaft for a single blade 8 to rotate, and the other located in the rotating groove 81 can provide the rotating shaft 91 for one blade 8 to rotate and the positioning for the relative rotation of another blade 8.

[0094] As Figure 7 shown, the blade 8 located at the lower left is in the open state. At this time, the rotating shaft 91 is in the first position A, and the fixed shaft 7 arranged in the rotating groove 81 is at the third limiting portion 811. The setting of the third limiting portion 811 can cooperate with the first position A and the second limiting portion 212 to jointly limit the offset of the blade 8 in the open state; as Figure 8 shown, the blade 8 located at the lower left is in the closed state. At this time, the rotating shaft 91 is in the first position A, and the fixed shaft 7 arranged in the rotating groove 81 is at the fourth limiting portion 812. The setting of the fourth limiting portion 812 can cooperate with the first position A and the first limiting portion 211 to jointly limit the offset of the blade 8 in the closed state.

[0095] Based on any of the above embodiments, the centers of the fixed shafts 7 corresponding to at least two blades 8 on the same side of the outer shell 2, the center of the connecting part of the swinging part 51 and the main body 52, and the center of the rotating part 92 are located on the same straight line.

[0096] As Figure 8 shown, the centers of the fixed shafts 7 corresponding to the two blades 8 on the same side are D and F respectively, the center of the connecting part of the swinging part 51 and the main body 52 is G, and the center of the rotating part 92 is D, that is, D, F, G, D are located on the same straight line, and the connecting line structures formed on both sides of this straight line are symmetrical. Figure 8 The solid line part in [Figure] corresponds to the positions of the centers of each component when the blade 8 is in the open state, and the dotted line part corresponds to the positions of the centers of each component when the blade 8 is in the closed state.

[0097] In addition, the self-locking shutter further includes a circuit board provided on the outer shell 2 for controlling the opening and closing of the blade 8 by controlling the direction of the energizing current of the coil 11. The specific position of the circuit board provided on the outer shell 2 can be any area outside or inside the outer shell 2, as long as it is convenient for the electrical connection between the circuit board and the coil 11 on the premise of avoiding interference between components.

[0098] In addition, the self-locking shutter further includes a first partition 3, a second partition 4, and a cover plate 1 for protection. The first partition 3 is used to separate the blades 8 on both sides of the outer shell 2 to avoid collision and friction when the blades 8 rotate, and ensure the service life of the blades 8; the second partition 4 is used to prevent interference between the blades 8 and the components inside the outer shell 2, such as the germanium window 6, the driving member 5, etc. in the outer shell 2; the cover plate 1 is fixed inside the outer shell 2 to prevent the blades 8 from being exposed and protect the blades 8. As Figure 2 shown, the cover plate 1, the first group of blades 8, the first partition 3, the second group of blades 8, the partition, and the germanium window 6 are arranged in sequence.

[0099] In addition to the above self-locking shutter, the present invention also provides an infrared imaging system including the self-locking shutter disclosed in the above embodiments. Since the infrared imaging system has the above self-locking shutter, it can achieve two-way self-locking, can ensure a reliable holding force in the shutter opening and closing states, so as to be applicable to bumpy application scenarios such as vehicles and improve applicability.

[0100] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0101] The above has introduced in detail a self-locking shutter and an infrared imaging system provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A self-locking shutter, characterized in that, Comprising: A housing (2); A driving member (5), rotatably connected to the housing (2) and provided with a swinging portion (51); A rotating member (9), provided with a rotating shaft (91) rotatably connected to the swinging portion (51); A blade (8), rotatably connected to the rotating shaft (91) to realize opening and closing. Both the blade (8) and the swinging portion (51) are provided with a first position A and a second position B. When the opening and closing state of the blade (8) is switched, the rotating shaft (91) moves from the first position A to the second position B and then moves back to the first position A; When the driving member (5) is in a standby state, the first positions A corresponding to the blade (8) and the swinging portion (51) can cooperate with the rotating shaft (91) to limit the deflection of the blade (8); When the driving member (5) is in a starting state, the swinging portion (51) drives the rotating shaft (91) to rotate in a preset direction to unlock from the first position A. The rotation of the rotating shaft (91) can drive the blade (8) to rotate in a direction opposite to the preset direction until the rotating shaft (91) moves back to the first position A again.

2. The self-locking shutter according to claim 1, wherein The housing (2) is provided with an arc-shaped groove (21). The opening of the arc-shaped groove (21) is arranged towards the rotation center of the driving member (5). The two ends of the arc-shaped groove (21) are respectively provided with a first limiting portion (211) and a second limiting portion (212) for limiting the deflection of the blade (8). When the rotating shaft (91) is in the first position A, it is located at the first limiting portion (211) or the second limiting portion (212) of the arc-shaped groove (21).

3. The self-locking shutter according to claim 1, wherein The housing (2) is provided with a fixed shaft (7) for the rotation of the blade (8). The included angle formed by the connection line between the center of the rotating shaft (91) and the center of the rotating portion (92) rotatably connected to the housing (2), and the connection line between the center of the rotating shaft (91) and the center of the fixed shaft (7) is an acute angle; The included angle formed by the connection line between the center of the rotating shaft (91) and the center of the rotating portion (92) rotatably connected to the housing (2), and the connection line between the center of the rotating shaft (91) and the center of the main body (52) rotatably connected to the housing (2) is an acute angle.

4. The self-locking shutter according to claim 3, wherein, One side of the blade (8) close to the swinging portion (51) is provided with a first long slot (82). The two ends of the first long slot (82) are correspondingly provided with the first position A and the second position B; The swinging portion (51) is provided with a second long slot (53) close to the first long slot (82). The two ends of the second long slot (53) are correspondingly provided with the first position A and the second position B.

5. The self-locking shutter according to claim 4, wherein One end of the swinging portion (51) is connected to the main body (52), and the other end of the swinging portion (51) is connected to the rotating shaft (91); The length of the connection line between the center of the connection portion of the swinging portion (51) and the main body (52) and the center of the rotating shaft (91) is a first length, and the length of the connection line between the center of the rotating shaft (91) and the center of the rotating portion (92) is a second length. The first length is greater than the second length.

6. The self-locking shutter according to claim 5, wherein, At least one of the vanes (8) is provided at each of the opposite sides of the housing (2), and the vanes (8) on the opposite sides of the housing (2) can approach or move away from each other under the action of the corresponding driving member (5) on the corresponding side to realize the switching between the open and closed states.

7. The self-locking shutter according to claim 6, wherein At least two of the vanes (8) are provided on the same side of the housing (2) and are distributed along the height direction thereof. A rotating groove (81) rotatably connected to the corresponding fixed shaft (7) of the other is provided between any two adjacent vanes (8). Along the height direction of the housing (2), the lengths of the first long grooves (82) respectively provided on at least two of the vanes (8) increase or decrease.

8. The self-locking shutter according to claim 7, wherein The opening direction of the rotating groove (81) is arranged away from the swinging portion (51). The two ends of the rotating groove (81) correspond to a third limiting portion (811) and a fourth limiting portion (812). When the rotating shaft (91) is in the first position A, the fixed shaft (7) provided in the rotating groove (81) is located at the third limiting portion (811) or the fourth limiting portion (812).

9. The self-locking shutter according to any one of claims 3 to 8, characterized in that, The centers of the fixed shafts (7) respectively corresponding to at least two of the vanes (8) on the same side of the housing (2), the center of the connecting portion between the swinging portion (51) and the main body (52), and the center of the rotating portion (92) are located on the same straight line.

10. An infrared imaging system, characterized in that, A self-locking shutter according to any one of claims 1 to 9.

Images