Lens optical filter switching device and sealing structure

Abstract

The utility model discloses a lens optical filter switching device and a sealing structure, and relates to the technical field of lenses. The device comprises a mounting frame, one side of the mounting frame is provided with a lens frame, the other side of the mounting frame is provided with a mounting groove, and the interior of the mounting frame is provided with a sliding groove communicated with the mounting groove; the power rocker arm comprises a micro motor fixedly connected in the mounting groove, a rotating rod connected with the micro motor is mounted in the mounting groove, an arm rod is fixedly connected to the upper end of the rotating rod, and a shifting block is hinged to the other end of the arm rod. According to the optical filter switching device, the micro motor drives the arm rod to deflect and abut to complete switching of the optical filters, compared with the mode that the micro motor drives a gear ruler strip to conduct meshing transmission, the phenomenon of screw loosening is avoided, the service life of the device is prolonged, friction of the optical filters can be reduced by arranging the guide supporting block, and safety is improved; the rubber ring is arranged on the sealing cover plate, so that the sealing performance can be improved, dust entering is reduced, and the definition of the optical filter is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of lens technology, and in particular to a lens optical filter switching device and a sealing structure. Background Art

[0002] For some surveillance cameras or camcorders, since they need to work continuously during the day and at night, in order to improve the quality of imaging, a filter switching device is usually installed on the surveillance camera or camera lens. That is to say, the dual filters can automatically switch filters during the day or at night, so the best imaging effect can be obtained regardless of whether it is day or night.

[0003] However, the existing camera lens optical filter switching device has the following problems:

[0004] 1. The device cannot effectively reduce the noise and friction generated when the filter is switched, and it is easy to damage the filter after multiple switches;

[0005] 2. When switching the filter, a micro motor is mostly used to drive the gear to drive the rack to move. After long-term use, the structure is prone to tooth slippage of the rack or gear, thus affecting the normal switching of the filter;

[0006] 3. The existing lens frame is not tightly connected when the switching device is installed, which easily creates a large gap, causing dust to enter the interior and affecting the clarity of the lens;

[0007] Therefore, the present application proposes a lens optical filter switching device and a sealing structure. Summary of the invention

[0008] The purpose of this application is to solve the problems in the above-mentioned background technology. This application provides a lens optical filter switching device and a sealing structure.

[0009] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0010] The lens optical filter switching device comprises:

[0011] A mounting frame, wherein a lens frame is configured on one side of the mounting frame, a mounting groove is configured on the other side of the mounting frame, and a sliding groove connected to the mounting groove is configured in the mounting frame;

[0012] The power rocker arm comprises a micro motor fixedly connected in a mounting groove, a rotating rod connected to the micro motor is installed in the mounting groove, an arm rod is fixedly connected to the upper end of the rotating rod, and a toggle block is hingedly connected to the other end of the arm rod;

[0013] A filter connection frame is movably mounted in the sliding groove, wherein one end of the filter connection frame protrudes toward the arm rod and is provided with a connecting piece, wherein the connecting piece is provided with a sliding through groove arranged along the width direction of the filter connection frame, and the free end of the toggle block is slidably plugged into the sliding through groove;

[0014] A guide support block, wherein two strip-shaped slide grooves are constructed on the filter connection frame along its length direction, and the guide support blocks are two in number and are constructed parallel and opposite to each other at the bottom of the slide groove. The filter connection frame is slidably sleeved on the two guide support blocks through the strip-shaped slide grooves, so that the filter connection frame is suspended in the slide groove;

[0015] The cover plate can be detachably installed in the sliding groove and the installation groove.

[0016] Furthermore, a vertical rod is constructed at the end of the arm rod, the outer surface of the vertical rod is wrapped with a rubber sleeve, the toggle block includes a rocker hinged at the upper end of the vertical rod and located on the upper side of the filter connecting frame, and an insertion block movably inserted in the sliding groove is constructed at the bottom of the other end of the rocker.

[0017] Furthermore, the guide support block includes a support piece fixedly connected to the bottom of the sliding groove, the length and width of the support piece are greater than the length and width of the strip sliding groove, and a guide block movably inserted in the strip sliding groove is constructed in the middle of the support piece.

[0018] Furthermore, the bottom of the cover plate is constructed with two abutment strips along its length direction, which abut against the upper surface of the filter connection frame.

[0019] The present application also proposes a sealing structure, which is applied to a lens, including the above-mentioned lens optical filter switching device, and further includes:

[0020] A socket block, fixedly connected to both sides of the installation frame in the width direction and having connection columns for connecting bolts fixedly connected thereto;

[0021] A rubber ring, the edges of the opening ends of the mounting groove and the sliding groove are both configured with a stepped groove, the cover plate is inserted and buckled in the stepped groove, and the rubber ring is fixedly connected to the bottom edge of the cover plate and abuts against the stepped groove;

[0022] A connecting sleeve, wherein a base frame for mounting a PCB board is constructed on one side of the cover plate opposite to the mounting frame, and the connecting sleeve is constructed on both sides of the width of the base frame and is sleeved with the connecting column;

[0023] There are four limit clamps, which are respectively constructed at the four corners of the step groove and are used to limit the position of the cover plate.

[0024] Furthermore, the side of the cover plate facing the sliding groove is configured with two sleeve blocks sleeved on the guide block, both sides of the inner wall of the sleeve block are configured with convex strips, and both sides of the guide block are configured with grooves engaged with the convex strips.

[0025] Furthermore, the base frame has a thickness greater than that of the installation frame.

[0026] Furthermore, one end of the sliding groove is connected to the mounting groove and two corners of the other end are provided with sleeve columns, and two corners of the bottom of the cover plate are provided with positioning columns which are inserted into the sleeve columns.

[0027] Furthermore, one end of the filter connection frame facing the sleeve is configured with two arc grooves at its corners, and the outer arc surface of the sleeve is wrapped with a rubber pad for resisting the arc grooves.

[0028] Furthermore, four movable grooves distributed in a rectangular shape are constructed on the edge of the upper surface of the mounting frame, and the limiting clamping piece includes an elastic sheet fixedly connected to the bottom of the movable groove, and an angled clamping block arranged toward the upper surface of the cover plate is constructed on the top of the elastic sheet, and round protrusions are constructed at both ends of the angled clamping block, and two clamping grooves for clamping the round protrusions are constructed on both end sides of the movable groove, when the angled clamping block is located above the cover plate, the two round protrusions are located in one of the clamping grooves, and when the angled clamping block is flipped into the movable groove, the two round protrusions are located in the other clamping groove.

[0029] The beneficial effects of this application are as follows:

[0030] 1. The present application sets a micro motor to drive the rotating rod to rotate, and the arm will deflect around the rotating rod, so that the toggle block at the end of the arm drives the filter connecting frame to move back and forth along the length direction of the sliding groove. Compared with the method in which the micro motor drives the gear and rack to engage and transmit, this method will not cause excessive wear and tear, can be used for a long time, and increase the service life of the device.

[0031] 2. The present application provides a guide support block in the sliding groove of the mounting frame to support a portion of the bottom of the filter connection frame, so that the portion of the filter connection frame connected to the filter is suspended in the sliding groove, thereby effectively preventing damage caused by excessive friction with the sliding groove when switching the filter, thereby increasing safety, and limiting the sliding stroke of the filter connection frame by having the guide support block pass through the strip sliding groove. The guide support block is wrapped with a rubber sleeve, which can share the impact force between the end of the filter connection frame and the inner wall of the sliding groove when the filter connection frame moves to reduce the sound.

[0032] 3. The present application is connected by a connecting sleeve and a connecting column, and the sleeve block, the connecting column and the connecting sleeve can be connected together by bolts when connected to the lens body. The connection between the cover plate and the mounting frame no longer requires additional bolts, and only a limit clamping piece is needed to achieve the connection between them. Not only is the connection more convenient, but by arranging a rubber ring at the bottom of the cover plate, the gap at the connection can also be filled to reduce the entry of dust, increase the airtightness, and ensure the clarity of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural diagram of this application;

[0034] Figure 2 It is a partial three-dimensional structural diagram of this application;

[0035] Figure 3 It is a three-dimensional structural diagram of the installation frame of this application;

[0036] Figure 4 This application Figure 3 Half-section of the three-dimensional structure;

[0037] Figure 5 This application Figure 4 The enlarged view of point A in the middle;

[0038] Figure 6 This application Figure 3 Another half-section of the three-dimensional structure;

[0039] Figure 7 This application Figure 6 The enlarged view of point B in the middle;

[0040] Figure 8 This is a three-dimensional structural diagram of the cover plate of this application;

[0041] Fig. 9 This is another perspective three-dimensional structural diagram of the cover plate of the present application;

[0042] Fig.10 This is a three-dimensional structural diagram of the power rocker arm of the present application;

[0043] Figure numerals: 1, mounting frame; 101, movable slot; 2, lens frame; 3, mounting slot; 301, step slot; 4, sliding slot; 401, sleeve column; 402, rubber pad; 5, power rocker arm; 501, micro motor; 502, rotating rod; 503, arm rod; 5031, vertical rod; 504, toggle block; 5041, rocker; 5042, plug block; 6, filter connecting frame; 601, connecting piece; 602, sliding through slot; 603, strip slide Groove; 604, arc groove; 7, guide support block; 701, support sheet; 702, guide block; 8, cover plate; 801, resistance strip; 802, sleeve block; 803, convex strip; 804, groove; 805, positioning column; 9, sleeve block; 901, connecting column; 10, rubber ring; 11, connecting sleeve; 12, base frame; 13, limit clamping piece; 1301, elastic sheet; 1302, bevel clamping block; 1303, round convex; 1304, clamping groove. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0045] like Figure 1-Figure 4 As shown, a lens optical filter switching device proposed in one embodiment of the present application includes:

[0046] A mounting frame 1, a lens frame 2 is configured on one side of the mounting frame 1, and the lens frame 2 is used to connect with the lens, a mounting groove 3 is configured on the other side of the mounting frame 1, and a sliding groove 4 connected to the mounting groove 3 is configured inside the mounting frame 1, and the length of the mounting groove 3 is consistent with the width of the sliding groove 4, and the width is at least one third of the length of the sliding groove 4;

[0047] The power rocker arm 5 comprises a micro motor 501 fixedly connected to the mounting groove 3, a rotating rod 502 connected to the micro motor 501 is installed in the mounting groove 3, an arm 503 is fixedly connected to the upper end of the rotating rod 502, and a toggle block 504 is hinged at the other end of the arm 503. When the power rocker arm 5 is powered on, the micro motor 501 drives the rotating rod 502 to rotate, thereby driving the arm 503 to deflect around the axis of the rotating rod 502, and the toggle block 504 deflects synchronously with its end, and the position of the toggle block 504 changes along the length direction of the sliding groove 4 during movement, wherein the micro motor 501 is a servo motor, connected to a three-phase current, and rotates forward when powered by a positive sequence voltage, and reverses when powered by a negative sequence voltage;

[0048] The filter connection frame 6 is movably installed in the sliding groove 4. Two filters for switching between day and night are installed in the filter connection frame 6. The end of the filter connection frame 6 facing the arm 503 is protruded with a connecting piece 601. The connecting piece 601 is constructed with a sliding groove 602 arranged along the width direction of the filter connection frame 6. The free end of the toggle block 504 is slidably plugged with the sliding groove 602. The sliding groove 602 on the connecting piece 601 can be movably plugged with the toggle block 504. In the initial state, one of the filters on the filter connection frame 6 is located at the opening of the lens frame 2, and in the toggle block 5 When the position of 04 changes, it will drive the connecting piece 601 to move synchronously, so that another filter can be moved to the opening of the lens frame 2 to complete the switching operation. The side without the connecting piece 601 is the activity space of the power rocker arm 5, which is convenient for the rotation of the arm 503. The rotation of the micro motor 501 drives the arm 503 to deflect, thereby driving the toggle block 504 to push the filter connection frame 6 to move. Compared with the micro motor driving the gear and the rack to engage and rotate, this method will not cause excessive wear and tear, avoid the occurrence of slipping teeth, ensure the switching operation of the filter, and increase the service life of the device;

[0049] The guide support block 7 has two strip slide grooves 603 on the filter connection frame 6 along its length direction. The number of guide support blocks 7 is two and they are parallel and oppositely constructed at the bottom of the sliding groove 4. The filter connection frame 6 is slidably sleeved on the two guide support blocks 7 through the strip slide grooves 603 to form a filter connection frame 6 suspended in the sliding groove 4. The strip slide groove 603 is set in the middle position of the length direction of the filter connection frame 6. A part of the guide support block 7 abuts against the bottom of the filter connection frame 6 and the other part is installed in the strip slide groove 603. When the filter connection frame 6 moves, the filter connected to it is Part of the optical filter will be suspended in the sliding groove 4 through the support of the guide support block 7, and will not contact the inner wall thereof, thereby effectively avoiding friction, protecting the safety of the optical filter, and ensuring the clarity of the optical filter. When the optical filter connection frame 6 moves to the end, it will collide with the end of the sliding groove 4, and at the same time, one end of the upper strip sliding groove 603 will also contact the guide support block 7. After being hit, the optical filter connection frame 6 will rebound a certain distance and drive the arm 503 to rotate elastically to buffer the rebound force, thereby offsetting the excessive impact force and further ensuring the safety of the optical filter.

[0050] The cover plate 8 is detachably installed in the sliding groove 3 and the mounting groove 4. The cover plate 8 is used to seal the sliding groove 3 and the mounting groove 4 to prevent the filter connecting frame 6 from detaching therefrom, and can form a slideway with the sliding groove 4 to limit the up and down movement of the filter connecting frame 6.

[0051] like Figure 2 and Fig.10 As shown, in some embodiments, a vertical rod 5031 is configured at the end of the arm 503, and the outer surface of the vertical rod 5031 is wrapped with a rubber sleeve. The provision of the rubber sleeve can not only play a buffering role when the filter connecting frame 6 hits the end of the sliding groove 4 and rebounds, but also can reduce the impact force with the inner wall of the mounting groove 3 when the arm 503 flips toward the other side, thereby reducing the sound. The toggle block 504 includes a rocker 5041 hinged at the upper end of the vertical rod 5031 and located on the upper side of the filter connecting frame 6. The bottom of the other end of the rocker 5041 is configured with an insert block 500 movably inserted in the sliding through groove 602. 42. Such a setting can insert the insert block 5042 from top to bottom into the sliding groove 602 by rotating the rocker 5041, which is more flexible during installation and convenient for connecting and disassembling with the filter connecting frame 6. When rotating toward the installation groove 3, the vertical rod 5031 is moved first, and then the hinged rocker 5041 is pulled until the vertical rod 5031 contacts the inner wall of the installation groove 3. At this time, the filter connecting frame 6 still has an inertial impact force, and the hinged rotation of the rocker 5041 can offset part of this impact force, thereby ensuring the safety of the filter.

[0052] like Figure 2-Figure 3 As shown, in some embodiments, the guide support block 7 includes a support sheet 701 fixedly connected to the bottom of the sliding groove 4, and the length and width of the support sheet 701 are both greater than the length and width of the strip sliding groove 603, so that the two support sheets 701 can stably support the parallel movement of the entire filter connecting frame 6, and relative to being laid flat in the sliding groove 4, the contact area is reduced, which is more conducive to the sliding of the filter connecting frame 6, reducing friction resistance, and partially suspending the filter, which can effectively ensure the safety of the filter and avoid damage after friction. The middle structure of the support sheet 701 There is a guide block 702 movably inserted in the strip slide groove 603, and the length of the guide block 702 is equal to the single stroke distance of the filter connecting frame 6, and the length of the strip slide groove 603 is equal to the sum of the double stroke distances, so that the guide block 702 can contact the end of the strip slide groove 603 when the filter connecting frame 6 moves in a single stroke, thereby facilitating the sharing of impact force at its end and reducing damage. In addition, the guide block 702 is arranged in the strip slide groove 603 and can also play a role of sliding guide, avoiding displacement of the filter connecting frame 6 when moving, thereby increasing safety.

[0053] like Fig. 9 As shown, in some embodiments, the bottom of the cover plate 8 is constructed with two abutment bars 801 along its length direction that abut against the upper surface of the filter connecting frame 6, and the abutment bars 801 are disposed on opposite sides of the two support plates 701. The filter connecting frame 6 can be effectively limited therein by the two abutment bars 801 and the two support plates 701 to prevent it from moving up and down too much, thereby ensuring the stable and straight movement of the filter connecting frame 6.

[0054] like Figure 2-Figure 9 As shown, a sealing structure proposed in one embodiment of the present application is applied to a lens, including the above-mentioned lens optical filter switching device. It also includes:

[0055] The sleeve block 9 is fixedly connected to both sides of the mounting frame 1 in the width direction and is fixedly connected with a connecting column 901 for connecting bolts. The sleeve block 9 is used to carry the connecting column 901, and the connecting column 901 is used to connect with the camera body through bolts;

[0056] The rubber ring 10, the opening end edges of the mounting groove 3 and the sliding groove 4 are all constructed with a stepped groove 301, the cover plate 8 is inserted and buckled in the stepped groove 301, the rubber ring 10 is fixedly connected to the bottom edge of the cover plate 8 and abuts in the stepped groove 301, the setting of the stepped groove 301 can increase the contact area between the cover plate 8 and the mounting frame 1, thereby reducing the possibility of dust entering, and the rubber ring 10 is squeezed and abutted at the connection point, which can effectively block the gap between them, improve the sealing performance, and prevent a large amount of dust from entering and affecting the clarity of the filter;

[0057] The connecting sleeve 11 and the side of the cover plate 8 opposite to the mounting frame 1 are configured with a base frame 12 for mounting a PCB board, which is used to mount the control circuit board inside the camera. The connecting sleeve 11 is configured on both sides of the width of the base frame 12 and is mutually sleeved with the connecting column 901. The connecting sleeve 11 can be directly sleeved with the connecting column 901 to form an integral body. When connecting the device to the camera, only two connecting sleeves 11, connecting columns 901 and the sleeve block 9 need to be connected to the camera body at the same time by two bolts. No additional bolts are needed to connect the cover plate 8 to the mounting frame 1, thereby saving costs.

[0058] There are four limit clamps 13 respectively constructed at the four corners of the stepped groove 301 for limiting the position of the cover plate 8. The limit clamps 13 are used to connect the cover plate 8 and the installation frame 1, which is more convenient to install without bolts.

[0059] like Fig. 9 As shown, in some embodiments, the side of the cover plate 8 facing the sliding groove 4 is constructed with two sleeve blocks 802 sleeved on the guide block 702, and both sides of the inner wall of the sleeve block 802 are constructed with convex strips 803, and both sides of the guide block 702 are constructed with grooves 804 that are clamped with the convex strips 803. By setting the sleeve block 802, the cover plate 8 can be sleeved and matched with the guide block 702 when installing the cover plate 8, which plays a certain guiding role, and an additional clamping relationship can be achieved through the groove 804 and the convex strip 803, so as to prevent the cover plate 8 from falling directly after the limit clamp 13 is damaged, thereby increasing safety.

[0060] like Figure 8 As shown, in some embodiments, the thickness of the base frame 12 is greater than the thickness of the mounting frame 1, and a high bottom frame is adopted, so that more circuit boards can be installed in the base frame 12, and the adaptability is stronger.

[0061] like Figure 4 and Fig. 9 As shown, in some embodiments, the length of the sliding groove 4 is connected to the installation groove 3 at one end and the two corners at the other end are constructed with sleeve columns 401, and the two corners at the bottom of the cover plate 8 are constructed with positioning columns 805 that are inserted into the sleeve columns 401. The sleeve columns 401 can be provided to guide the installation position of the cover plate 8 when installing it, thereby avoiding the occurrence of misalignment during insertion and improving the convenience of installation.

[0062] like Figure 2 and Figure 5 As shown, in some embodiments, one end of the filter connection frame 6 facing the sleeve 401 is constructed with two arc grooves 604 located at its corners, and the outer arc surface of the sleeve 401 is wrapped with a rubber pad 402 for resisting the arc groove 604. By utilizing the fact that the arc surface of the sleeve 401 will contact the two corners of the filter connection frame 6, the rubber pad 402 can be used to buffer the impact, thereby preventing the internal filter from being shattered in the event of a hard collision, thereby further improving safety.

[0063] like Figure 3-7As shown, in some embodiments, four movable grooves 101 distributed in a rectangular shape are constructed on the edge of the upper surface of the installation frame 1, and the limiting clamping member 13 includes an elastic sheet 1301 fixedly connected to the bottom of the movable groove 101, and an oblique angle clamping block 1302 arranged toward the upper surface of the cover plate 8 is constructed on the top of the elastic sheet 1301, and the inclined surface of the oblique angle clamping block 1302 is arranged toward the upper side of the cover plate 8, and both ends of the oblique angle clamping block 1302 are constructed with round protrusions 1303, and both end sides of the movable groove 101 are constructed with two for clamping the round protrusions 1303. The groove 1304 of 303, the protrusion 1303 and the groove 1304 are interferingly engaged, and the material is made of plastic material with a certain elastic deformation ability. When the bevel block 1302 is located above the cover plate 8, the two protrusions 1303 are located in one of the grooves 1304, and when the bevel block 1302 is flipped into the movable groove 101, the two protrusions 1303 are located in the other groove 1304. When installing the cover plate 8, it only needs to be inserted and fixed through the sleeve column 401 and the positioning column 805. The cover plate 8 is positioned so that it gradually moves toward the stepped groove 301. During this process, the cover plate 8 squeezes the inclined surfaces of the multiple angled blocks 1302 to move toward the movable groove 101 until the round protrusion 1303 on the angled block 1302 is engaged with one of the grooves 1304 in the movable groove 101, thereby limiting the elastic sheet 1301 that is turned at a certain angle, so that the cover plate 8 can be more easily and steadily pressed down to the bottom of the stepped groove 301, so that the sleeve block 802 can move smoothly with the guide block 702. It is convenient to connect the two by sleeve connection to avoid deviation. Later, the personnel only need to move the bevel clamping block 1302 out of the movable groove 101 to clamp the upper surface of the cover plate 8. The operation is convenient and quick. When the cover plate 8 needs to be removed, it is only necessary to move the bevel clamping block 1302 into the movable groove 101 in turn to clamp the round protrusion 1303 with the clamping groove 1304. There is no need for personnel to keep pushing several bevel clamping blocks 1302 all the time to remove the cover plate 8, which greatly saves manpower and increases convenience.

[0064] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lens optical filter switching device, characterized in that: include: An installation frame (1), wherein a lens frame (2) is constructed on one side of the installation frame (1), an installation groove (3) is constructed on the other side of the installation frame (1), and a sliding groove (4) connected to the installation groove (3) is constructed inside the installation frame (1); The power rocker arm (5) comprises a micro motor (501) fixedly connected in the mounting groove (3), a rotating rod (502) connected to the micro motor (501) is installed in the mounting groove (3), an arm (503) is fixedly connected to the upper end of the rotating rod (502), and a toggle block (504) is hingedly connected to the other end of the arm (503); A filter connection frame (6) is movably mounted in the sliding groove (4); one end of the filter connection frame (6) protrudes toward the arm (503) and is provided with a connection piece (601); the connection piece (601) is provided with a sliding through groove (602) arranged along the width direction of the filter connection frame (6); and the free end of the toggle block (504) is slidably plugged into the sliding through groove (602); A guide support block (7), wherein two strip-shaped slide grooves (603) are formed on the filter connection frame (6) along its length direction, and the guide support blocks (7) are two in number and are parallelly and oppositely formed at the bottom of the slide groove (4), and the filter connection frame (6) is slidably sleeved on the two guide support blocks (7) through the strip-shaped slide grooves (603), so that the filter connection frame (6) is suspended in the slide groove (4); The cover plate (8) is detachably mounted in the sliding groove (4) and the mounting groove (3).

2. The lens optical filter switching device according to claim 1, characterized in that: The end of the arm (503) is provided with a vertical rod (5031), the outer surface of the vertical rod (5031) is wrapped with a rubber sleeve, the toggle block (504) comprises a rocker (5041) hinged at the upper end of the vertical rod (5031) and located on the upper side of the filter connection frame (6), and the bottom of the other end of the rocker (5041) is provided with an insert block (5042) movably inserted into the sliding groove (602).

3. The lens optical filter switching device according to claim 1, characterized in that: The guide support block (7) comprises a support sheet (701) fixedly connected to the bottom of the sliding groove (4); the length and width of the support sheet (701) are both greater than the length and width of the strip sliding groove (603); and a guide block (702) movably inserted into the strip sliding groove (603) is constructed in the middle of the support sheet (701).

4. The lens optical filter switching device according to claim 1, characterized in that: The bottom of the cover plate (8) is constructed with two abutment strips (801) along its length direction, which abut against the upper surface of the filter connection frame (6).

5. Sealing structure, characterized in that, Applied to a lens, comprising the lens optical filter switching device according to any one of claims 1 to 4, and further comprising: A sleeve block (9) is fixedly connected to both sides of the installation frame (1) in the width direction and has a connecting column (901) for connecting bolts fixedly connected thereto; A rubber ring (10), the edges of the opening ends of the mounting groove (3) and the sliding groove (4) are both configured with a stepped groove (301), the cover plate (8) is inserted and snapped into the stepped groove (301), and the rubber ring (10) is fixedly connected to the bottom edge of the cover plate (8) and abuts against the stepped groove (301); A connecting sleeve (11), wherein a base frame (12) for mounting a PCB board is constructed on a side of the cover plate (8) opposite to the mounting frame (1), and the connecting sleeve (11) is constructed on both sides of the width of the base frame (12) and is mutually sleeved with the connecting column (901); There are four limiting clamping parts (13) respectively constructed at four corners of the stepped groove (301) and used to limit the position of the cover plate (8).

6. The sealing structure according to claim 5, characterized in that: The side of the cover plate (8) facing the sliding groove (4) is configured with two sleeve blocks (802) sleeved on the guide block (702), both sides of the inner wall of the sleeve block (802) are configured with convex strips (803), and both sides of the guide block (702) are configured with grooves (804) that are engaged with the convex strips (803).

7. The sealing structure according to claim 5, characterized in that: The thickness of the base frame (12) is greater than the thickness of the installation frame (1).

8. The sealing structure according to claim 5, characterized in that: One end of the sliding groove (4) is connected to the mounting groove (3) and two corners at the other end are provided with sleeve columns (401). Two corners at the bottom of the cover plate (8) are provided with positioning columns (805) which are inserted into the sleeve columns (401).

9. The sealing structure according to claim 8, characterized in that: One end of the filter connection frame (6) facing the sleeve column (401) is configured with two arc-shaped grooves (604) located at its corners, and the outer arc surface of the sleeve column (401) is wrapped with a rubber pad (402) for resisting the arc-shaped grooves (604).

10. The sealing structure according to claim 5, characterized in that: The upper surface edge of the installation frame (1) is configured with four movable grooves (101) distributed in a rectangular shape; the position-limiting clamping member (13) comprises an elastic sheet (1301) fixedly connected to the bottom of the movable groove (101); the top of the elastic sheet (1301) is configured with an oblique angle clamping block (1302) arranged toward the upper surface of the cover plate (8); both ends of the oblique angle clamping block (1302) are configured with round protrusions (1303); both end sides of the movable groove (101) are configured with two clamping grooves (1304) for clamping the round protrusions (1303); when the oblique angle clamping block (1302) is located above the cover plate (8), the two round protrusions (1303) are located in one of the clamping grooves (1304); when the oblique angle clamping block (1302) is flipped into the movable groove (101), the two round protrusions (1303) are located in the other clamping groove (1304).

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