Left eye and right eye switching device of monocular night vision device

Abstract

The invention relates to the technical field of night vision devices, and provides a left and right eye switching device of a monocular night vision device, which comprises a head cover, and a bracket is detachably mounted on one side of the head cover. According to the invention, the screw rod is rotated by hand to move towards the outer side, the state of abutting against the U-shaped strip is released, then the movable block is pushed by hand to slide towards one side along the outer surface of the U-shaped strip, the pointers are moved to a proper position, and the distance between the two pointers can be observed by observing the scale marks, so that the distance is the same as the pupil distance of a user. Under the action of a limiting strip, a strip-shaped block can be prevented from rotating upwards reversely, so that a sliding block can be kept at a fixed position, the left-right moving distance of the monocular night vision device body can be properly adjusted according to different interpupillary distances of users, it can be guaranteed that the eyes of the users are aligned with an observation opening of the monocular night vision device body, and the user experience is improved. Therefore, the observation effect of the user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of night vision devices, and in particular to a left-eye and right-eye switching device for a monocular night vision device. Background Art

[0002] A monocular night vision device is a portable night-time imaging device that uses a single lens to observe objects at night. It utilizes weak light sources (such as starlight and infrared light) or active infrared illumination to achieve visible imaging in dark environments. Its core function is to enhance visibility in low-light scenes through photoelectric conversion technology. It is widely used in military reconnaissance, law enforcement patrols, field exploration, and security monitoring.

[0003] In the prior art, for example, Chinese patent number CN119335726A discloses a monocular head-mounted night vision device, which belongs to the technical field of night vision devices, including a connecting block, a headband assembly is installed on the connecting block, a connecting frame is fixed to the side of the connecting block, a front plate is fixed to the connecting frame, a monocular night vision device is arranged below the front plate, an adjustment component is arranged on the front plate, an additional adjustment component is arranged at the end of the front plate, and a cleaning lens component is arranged in the middle of the front plate; the present invention realizes the switching of the monocular night vision device through the adjustment component, greatly reduces the coordinated movement of the head and neck, and makes the adjustment operation more convenient and simple; the additional adjustment component is provided to realize the rapid switching of the monocular night vision device between the left and right eyes, greatly reducing the delay caused by the switching of the monocular night vision device to the observation task; by using the movement of the monocular night vision device to trigger the cleaning lens component to compress a certain amount of air and quickly blow it onto the lens of the monocular night vision device, effectively removing impurities adhering to the lens surface and reducing the frequency of manual wiping and cleaning.

[0004] Although the above scheme has the advantages as mentioned above, the disadvantage of the above scheme is that although the monocular night vision goggles can be moved and switched to different ends of the front plate through the provided switching assembly, thereby realizing the conversion of the monocular night vision goggles between the left and right eye positions, due to the different pupil distances of different users, when the monocular night vision goggles are switched between the left and right eyes, the user's eyes may not be aligned with the observation port of the monocular night vision goggles, thereby affecting the user's observation effect, and when the monocular night vision goggles lens is blown clean, the monocular night vision goggles need to be moved from one end to the other of the front plate. When the monocular night vision goggles lens needs to be blown clean again in a short time, the movement stroke of the monocular night vision goggles is too long, which is troublesome and inconvenient, thereby affecting the normal use of the monocular night vision goggles. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that although the monocular night vision goggles can be moved and switched to different ends of the front plate by means of a switching assembly, thereby realizing the conversion of the monocular night vision goggles between the left and right eye positions, due to the different pupil distances of different users, when the monocular night vision goggles are switched between the left and right eyes, the user's eyes may not be aligned with the observation port of the monocular night vision goggles, thereby affecting the user's observation effect, and when the monocular night vision goggles lens is blown clean, the monocular night vision goggles need to be moved from one end to the other of the front plate. When the monocular night vision goggles lens needs to be blown clean again in a short time, the movement stroke of the monocular night vision goggles is too long, which is troublesome and inconvenient, thereby affecting the normal use of the monocular night vision goggles.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a left-eye switching device for a monocular night vision device, a head cover, a bracket being detachably mounted on one side of the head cover, a frame being fixedly connected to one side of the bracket, a U-shaped bar being fixedly connected to one side of the frame, and two movable blocks being symmetrically slidably connected to the outer surface of the U-shaped bar, a fixed block being fixedly connected to one side of the fixed block, a screw being threadedly connected to the top of the movable block, an indicator needle being fixedly connected to the top of the frame, a scale line being provided on the top of the frame, a slider being slidably connected to the outer surface of the frame, a mounting bracket being fixedly connected to the bottom of the slider, a monocular night vision device body being detachably mounted on the inside of the mounting bracket, the bottom of the movable block being fixedly connected to the U-shaped block, a movable rod being rotatably connected to the opposite side of the two arms of the U-shaped block, a bar block being fixedly connected to the outer surface of the movable rod, a torsion spring being provided on the outer surface of the movable rod, and a limited block being fixedly connected to one side of the slider.

[0007] Preferably, one end of the torsion spring 1 is fixedly connected to one end of the movable rod, and the other end of the torsion spring 1 is fixedly connected to one side of the U-shaped block.

[0008] Preferably, pneumatic telescopic rods are fixedly connected to opposite sides of the inner wall of the frame, a round block is fixedly connected to one end of the pneumatic telescopic rod, and a square block is fixedly connected to the top of the slider.

[0009] Preferably, a return spring is provided on the outer surface of the pneumatic telescopic rod, one end of the return spring is fixedly connected to one side of the inner wall of the frame, and the other end of the return spring is fixedly connected to one side of the round block.

[0010] Preferably, the U-shaped block is rotatably connected to an air outlet pipe on one side near the top, and the air outlet end of the pneumatic telescopic rod is fixedly connected to a hose, one end of the hose is connected to the compression chamber of the pneumatic telescopic rod, and the hose is fixedly connected to the air outlet pipe.

[0011] Preferably, the hose is fixedly connected to a one-way valve 1 near the inner wall of the pneumatic telescopic rod, the other end of the pneumatic telescopic rod is fixedly connected to an air inlet pipe, one end of the air inlet pipe is connected to the compression chamber of the pneumatic telescopic rod, and the air inlet pipe is fixedly connected to a one-way valve 2 near the inner wall of the pneumatic telescopic rod.

[0012] Preferably, two L-shaped bars are fixedly connected to one side of the slider, racks are fixedly connected to the tops of the two L-shaped bars, and a gear is fixedly connected to the outer surface of the air outlet pipe, one of the gears is meshed with the rack.

[0013] Preferably, a fixing ring is fixedly connected to the outer surface of the air outlet pipe, and a second torsion spring is provided on the outer surface of the air outlet pipe, and two ends of the second torsion spring are fixedly connected to the fixing ring and the U-shaped block respectively.

[0014] Preferably, one side of the U-shaped block close to the bottom is fixedly connected to a limiting strip, and the movable rod is arranged in a T shape.

[0015] Preferably, two support frames are symmetrically fixedly connected to the top of the frame, and the outer surface of the hose is slidably connected to the inside of the support frame.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] The present invention can be realized by manually rotating the screw rod to move it outwards and releasing the state in which it is tightly pressed against the U-shaped bar. Then, the movable block is pushed by hand to slide it to one side along the outer surface of the U-shaped bar, so that the indicator needle moves to the appropriate position. By observing the scale line, the distance between the two indicator needles can be observed to be the same as the user's pupil distance. Then, the screw rod is rotated in the opposite direction to make it press against the upper surface of the U-shaped bar, so as to limit the fixed block and the movable block. When the monocular night vision device body needs to be moved to the position of the user's other eye, the slider is pushed to one side by hand to move it a short distance along the outer surface of the slider to the end portion near the frame, so that the limit block is separated from the bar block. At this time, the bar block can be rotated upwards to separate its upper portion from the limit bar, synchronously driving the movable rod to rotate, so that the torsion spring is twisted. When the bar block rotates to the horizontal position, At this time, by pushing the slider to the end farther away from the frame, the bar block will not block the limit block, and then one side of the limit block is brought into contact with the other bar block and a thrust is applied thereto, causing the other bar block to rotate upward, and synchronously causing the other torsion spring 1 to twist. When the limit block is disengaged from the bar block, the bar block can be reset under the reset force of the torsion spring 1 to maintain a vertical state, and then the slider is made to slide in the opposite direction along the frame, and the limit block is brought into contact with the bar block and a force is applied thereto. Under the action of the limit bar, the bar block can be prevented from rotating upward in the opposite direction, thereby keeping the slider in a fixed position. In this way, the left and right movement distance of the monocular night vision device body can be appropriately adjusted according to the different interpupillary distances of the user, thereby ensuring that the user's eyes are aligned with the observation port of the monocular night vision device body, thereby improving the user's observation effect.

[0018] 2. In the present invention, the block moves to one side, so that the block applies a thrust to the round block, causing the pneumatic telescopic rod to contract, thereby increasing the air pressure inside the compression chamber of the pneumatic telescopic rod. Since the opening direction of the one-way valve one is from the pneumatic telescopic rod toward the air outlet pipe, and the opening direction of the one-way valve two is from the outside toward the pneumatic telescopic rod, at this time, the one-way valve one is opened and the one-way valve two is closed, so that the gas inside the compression chamber of the pneumatic telescopic rod enters the hose and is blown toward the lens position of the monocular night vision device body through the air outlet pipe, thereby cleaning the sand, dust and other impurities at the lens position of the monocular night vision device body, and simultaneously compressing the reset spring. When the slider is released, it will slide in the opposite direction along the frame, causing the pneumatic telescopic rod to extend, thereby reducing the air pressure inside the compression chamber of the pneumatic telescopic rod. At this time, the one-way valve one is closed and the one-way valve two is opened, allowing the external air to enter the compression chamber of the pneumatic telescopic rod through the air inlet pipe, so that the limit block is against one side of the strip block. Under the limiting action of the limit bar, the strip block can be prevented from rotating upward in the opposite direction. By repeatedly sliding the slider back and forth along the outer surface of the frame within a short distance, the air outlet pipe can continuously blow air to the lens of the monocular night vision goggles body. In this way, when there is no need to replace the left and right eyes of the monocular night vision goggles body for use, there is no need to move the monocular night vision goggles body from the end to the end of the frame, thereby ensuring that the lens of the monocular night vision goggles body is blown and cleaned while reducing the travel of the monocular night vision goggles body, which is relatively simple and convenient, thereby improving the convenience of using the monocular night vision goggles body.

[0019] 3. The present invention can drive the L-shaped bar and the rack to move through the movement of the slider, and then the gear can drive the outlet pipe to rotate under the meshing cooperation of the rack and the gear, so that the outlet pipe can rotate within a certain range, which can expand the range of the outlet pipe blowing air toward the monocular night vision device body lens, and synchronously drive the fixed ring to rotate, so that the torsion spring 2 is twisted. Under the reset force of the torsion spring 2, when the other gear is not in contact with the rack, the outlet pipe can be maintained in the initial state. In this way, when the monocular night vision device body is moving, the air blown out of the outlet pipe can fully blow on the lens of the monocular night vision device body, thereby improving the cleaning effect of the monocular night vision device body lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a left-eye and right-eye switching device for a monocular night vision device provided by the present invention;

[0021] Figure 2 A schematic diagram of a partial side view structure of a left-eye switching device for a monocular night vision device provided by the present invention;

[0022] Figure 3 The present invention provides a monocular night vision device for switching left and right eyes Figure 2 A in the middle is an enlarged structural diagram;

[0023] Figure 4 A schematic diagram of a partial upward-looking structure of a left-eye and right-eye switching device of a monocular night vision device provided by the present invention;

[0024] Figure 5 A schematic diagram of a portion of the structure of a left-eye and right-eye switching device for a monocular night vision device provided by the present invention;

[0025] Figure 6 The present invention provides a monocular night vision device for switching left and right eyes Figure 5 The enlarged structural diagram at B in the middle;

[0026] Figure 7 This is a schematic diagram of the front view structure of a left-eye switching device for a monocular night vision device provided by the present invention.

[0027] Legend:

[0028] 1. Headgear; 2. Bracket; 201. Frame; 202. Scale line; 203. U-shaped bar; 204. Movable block; 205. Indicator needle; 206. Fixed block; 207. Screw; 208. U-shaped block; 209. Movable rod; 210. Bar block; 211. Torsion spring 1; 212. Limit bar; 213. Slider; 214. Limit block; 3. Monocular night vision device body; 301. Mounting bracket; 4. L-shaped bar; 401. Rack; 402. Gear; 403. Fixing ring; 404. Torsion spring 2; 5. Block; 502. Hose; 503. Exhaust pipe; 504. Pneumatic telescopic rod; 505. Round block; 506. Return spring; 507. Inlet pipe; 508. Support bracket. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Examples, such as Figure 1 - Figure 7As shown, the present invention provides a technical solution: a left-eye switching device for a monocular night vision device, a head cover 1, a bracket 2 is detachably mounted on one side of the head cover 1, a frame 201 is fixedly connected to one side of the bracket 2, a U-shaped bar 203 is fixedly connected to one side of the frame 201, two movable blocks 204 are symmetrically slidably connected to the outer surface of the U-shaped bar 203, one side of the movable block 204 is fixedly connected to a fixed block 206, one side of the fixed block 206 is threadedly connected to a screw 207, the top of the movable block 204 is fixedly connected to an indicator pin 205, and the top of the frame 201 is opened. A scale line 202 is provided, and a slider 213 is slidably connected to the outer surface of the frame 201, and the bottom of the slider 213 is fixedly connected to the mounting bracket 301. The monocular night vision device body 3 is detachably installed inside the mounting bracket 301. The bottom of the movable block 204 is fixedly connected to the U-shaped block 208, and the opposite side of the two arms of the U-shaped block 208 is rotatably connected to the movable rod 209. The outer surface of the movable rod 209 is fixedly connected to the bar block 210, and the outer surface of the movable rod 209 is provided with a torsion spring 211. One side of the slider 213 is fixedly connected to the limit block 214.

[0031] Further, such as Figure 1 - Figure 7 As shown, one end of the torsion spring 211 is fixedly connected to one end of the movable rod 209, and the other end of the torsion spring 211 is fixedly connected to one side of the U-shaped block 208. Under the reset force of the torsion spring 211, when the force acting on the bar block 210 disappears, the bar block 210 can be kept in a vertical state.

[0032] Further, such as Figure 1 - Figure 7 As shown, pneumatic telescopic rods 504 are fixedly connected to opposite sides of the inner wall of the frame 201, one end of the pneumatic telescopic rod 504 is fixedly connected to a round block 505, and the top of the slider 213 is fixedly connected to the block 5. Through the above arrangement, when the slider 213 drives the block 5 to move to one side, a force can be applied to the round block 505.

[0033] Further, such as Figure 1 - Figure 7 As shown, a return spring 506 is provided on the outer surface of the pneumatic telescopic rod 504, one end of the return spring 506 is fixedly connected to one side of the inner wall of the frame 201, and the other end of the return spring 506 is fixedly connected to one side of the round block 505. Under the return force of the return spring 506, the round block 505 can be subjected to a force, causing the pneumatic telescopic rod 504 to extend.

[0034] Further, such as Figure 1 - Figure 7As shown, one side of the U-shaped block 208 near the top is rotatably connected to the air outlet pipe 503, and the air outlet end of the pneumatic telescopic rod 504 is fixedly connected to the hose 502. One end of the hose 502 is connected to the compression chamber of the pneumatic telescopic rod 504, and the hose 502 is fixedly connected to the air outlet pipe 503. Through the above arrangement, when the pneumatic telescopic rod 504 contracts, the air pressure inside its compression chamber increases, and when the pneumatic telescopic rod 504 extends, the air pressure inside its compression chamber decreases.

[0035] Further, such as Figure 1 - Figure 7 As shown, the hose 502 is fixedly connected to a one-way valve 1 near the inner wall of the pneumatic telescopic rod 504, and the other end of the pneumatic telescopic rod 504 is fixedly connected to an air inlet pipe 507. One end of the air inlet pipe 507 is connected to the compression chamber of the pneumatic telescopic rod 504, and the air inlet pipe 507 is fixedly connected to a one-way valve 2 near the inner wall of the pneumatic telescopic rod 504. Through the above arrangement, when the air pressure inside the compression chamber of the pneumatic telescopic rod 504 increases, the one-way valve 1 opens and the one-way valve 2 closes, allowing the gas inside the compression chamber of the pneumatic telescopic rod 504 to enter the hose 502 and be blown out toward the lens position of the monocular night vision device body 3 through the air outlet pipe 503. When the air pressure inside the compression chamber of the pneumatic telescopic rod 504 decreases, the one-way valve 1 closes and the one-way valve 2 opens, allowing the outside air to enter the compression chamber of the pneumatic telescopic rod 504 through the air inlet pipe 507.

[0036] Further, such as Figure 1 - Figure 7 As shown, one side of the slider 213 is fixedly connected to two L-shaped bars 4, the tops of the two L-shaped bars 4 are fixedly connected to a rack 401, and the outer surface of the air outlet pipe 503 is fixedly connected to a gear 402, one of the gears 402 is meshed with the rack 401. The movement of the slider 213 can drive the L-shaped bar 4 and the rack 401 to move, and then the gear 402 can drive the air outlet pipe 503 to rotate under the cooperation of the meshing of the rack 401 and the gear 402, so that the air outlet pipe 503 can rotate within a certain range, which can expand the range of the air outlet pipe 503 blowing air toward the lens of the monocular night vision device body 3.

[0037] Further, such as Figure 1 - Figure 7 As shown, the outer surface of the air outlet pipe 503 is fixedly connected to the fixing ring 403, and the outer surface of the air outlet pipe 503 is provided with a torsion spring 2 404. The two ends of the torsion spring 2 404 are fixedly connected to the fixing ring 403 and the U-shaped block 208 respectively. Under the reset force of the torsion spring 2 404, when the other gear 402 is not in contact with the rack 401, the air outlet pipe 503 can be maintained in the initial state.

[0038] Further, such as Figure 1 - Figure 7As shown, the U-shaped block 208 is fixedly connected to a limiting strip 212 on one side near the bottom, and the movable rod 209 is arranged in a T shape. The setting of the limiting strip 212 plays a certain limiting role on the movable rod 209. The movable rod 209 can only rotate upward in one direction, and cannot rotate upward if it rotates in the opposite direction.

[0039] Further, such as Figure 1 - Figure 7 As shown, two support frames 508 are symmetrically fixedly connected to the top of the frame 201, and the outer surface of the hose 502 is slidably connected to the inside of the support frame 508. The setting of the support frame 508 provides a certain supporting effect on the hose 502.

[0040] Working principle: When in use, first adjust the distance between the two indicator needles 205 according to the user's pupil distance, and manually rotate the screw 207 to move it outward to release the state of it being pressed against the U-shaped bar 203. Then, manually push the movable block 204 to slide it to one side along the outer surface of the U-shaped bar 203 to move the indicator needle 205 to a suitable position. By observing the scale line 202, the distance between the two indicator needles 205 can be observed to be the same as the user's pupil distance. Then, by rotating the screw 207 in the opposite direction to make it press against the top of the U-shaped bar 203, the fixed block 206 and the movable block 204 are limited. When it is necessary to move the monocular night vision device body 3 to the position of the user's other eye, manually push the slide The block 213 is pushed to one side, so that it moves a short distance along the outer surface of the slider 213 toward the end closer to the frame 201, so that the limit block 214 is separated from the bar block 210. At this time, the bar block 210 can be rotated upward so that its upper part is disengaged from the limit bar 212, and the movable rod 209 is synchronously driven to rotate, so that the torsion spring 1 211 is twisted. When the bar block 210 is rotated to the horizontal position, the slider 213 is pushed toward the end farther away from the frame 201, and the bar block 210 does not block the limit block 214. Then one side of the limit block 214 is brought into contact with the other bar block 210 and a thrust is applied to it, so that the other bar block 210 is rotated upward, and the other torsion spring 1 211 is twisted synchronously. When the limit block 214 is disengaged from the bar block 210, the bar block 210 can be reset to maintain a vertical state under the reset force of the torsion spring 211, and then the slider 213 is slid in the opposite direction along the frame 201, and the limit block 214 is brought into contact with the bar block 210, exerting a force on it. Under the action of the limit bar 212, the bar block 210 can be prevented from rotating upward in the opposite direction, so that the slider 213 can be kept in a fixed position. In this way, the left and right movement distance of the monocular night vision device body 3 can be appropriately adjusted according to the different pupil distances of the users, so as to ensure that the user's eyes are aligned with the observation port of the monocular night vision device body 3, thereby improving the user's observation effect. Synchronously, when the monocular night vision device body 3 is moved left and right During replacement, when the slider 213 is moved a short distance along the frame 201 to the end at a closer position, the block 5 is synchronously driven to move to one side, so that the block 5 applies a thrust to the round block 505, causing the pneumatic telescopic rod 504 to contract, thereby increasing the air pressure inside the compression chamber of the pneumatic telescopic rod 504. Since the opening direction of the one-way valve 1 is from the pneumatic telescopic rod 504 toward the air outlet pipe 503, and the opening direction of the one-way valve 2 is from the outside toward the pneumatic telescopic rod 504, at this time, the one-way valve 1 is opened and the one-way valve 2 is closed, so that the gas inside the compression chamber of the pneumatic telescopic rod 504 enters the hose 502 and is blown out toward the lens position of the monocular night vision device body 3 through the air outlet pipe 503, thereby cleaning away impurities such as sand and dust at the lens position of the monocular night vision device body 3.The return spring 506 is compressed synchronously. When the slider 213 is released, the slider 213 will slide in the opposite direction along the frame 201, causing the pneumatic telescopic rod 504 to extend, thereby reducing the air pressure inside the compression chamber of the pneumatic telescopic rod 504. At this time, the one-way valve 1 is closed and the one-way valve 2 is opened, allowing the outside air to enter the compression chamber of the pneumatic telescopic rod 504 through the air inlet pipe 507, so that the limit block 214 is against one side of the bar block 210. Under the limiting action of the limit bar 212, the bar block 210 can be prevented from rotating upward in the opposite direction. By repeatedly sliding the slider 213 back and forth along the outer surface of the frame 201 within a short distance, the air outlet pipe 503 can continuously blow air to the lens of the monocular night vision device body 3. In this way, when there is no need to replace the left and right eyes of the monocular night vision device body 3, there is no need to move the monocular night vision device body 3 between the ends of the frame 201, thereby ensuring that the lens of the monocular night vision device body 3 is blown and cleaned. The travel of the monocular night vision device body 3 can be reduced, making it simple and convenient, thereby improving the convenience of use of the monocular night vision device body 3. The synchronous movement of the slider 213 can drive the L-shaped bar 4 and the rack 401 to move. Then, through the meshing cooperation of the rack 401 and the gear 402, the gear 402 can drive the air outlet pipe 503 to rotate, so that the air outlet pipe 503 rotates within a certain range, which can expand the range of the air outlet pipe 503 blowing air toward the lens of the monocular night vision device body 3. The fixed ring 403 is synchronously driven to rotate, causing the torsion spring 2 404 to twist. Under the reset force of the torsion spring 2 404, when the other gear 402 is not in contact with the rack 401, the air outlet pipe 503 can be maintained in the initial state. In this way, when the monocular night vision device body 3 is moving, the air blown out of the air outlet pipe 503 can fully blow on the lens of the monocular night vision device body 3, thereby improving the cleaning effect of the lens of the monocular night vision device body 3.

[0041] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A device for switching left and right eyes of a monocular night vision device, characterized in that: A head cover (1) is provided, wherein a bracket (2) is detachably mounted on one side of the head cover (1), a frame (201) is fixedly connected to one side of the bracket (2), a U-shaped bar (203) is fixedly connected to one side of the frame (201), two movable blocks (204) are symmetrically slidably connected to the outer surface of the U-shaped bar (203), a fixed block (206) is fixedly connected to one side of the movable block (204), a screw (207) is threadedly connected to one side of the fixed block (206), an indicator needle (205) is fixedly connected to the top of the movable block (204), a scale mark (202) is provided on the top of the frame (201), and the frame ( The outer surface of the movable block (201) is slidably connected to a slider (213), the bottom of the slider (213) is fixedly connected to a mounting frame (301), the interior of the mounting frame (301) is detachably mounted with a monocular night vision device body (3), the bottom of the movable block (204) is fixedly connected to a U-shaped block (208), the opposite side of the two arms of the U-shaped block (208) is rotatably connected to a movable rod (209), the outer surface of the movable rod (209) is fixedly connected to a bar block (210), the outer surface of the movable rod (209) is provided with a torsion spring (211), and one side of the slider (213) is fixedly connected to a limiting block (214).

2. The left-eye switching device for a monocular night vision device according to claim 1, characterized in that: One end of the torsion spring (211) is fixedly connected to one end of the movable rod (209), and the other end of the torsion spring (211) is fixedly connected to one side of the U-shaped block (208).

3. The left-eye switching device for a monocular night vision device according to claim 2, characterized in that: Pneumatic telescopic rods (504) are fixedly connected to opposite sides of the inner wall of the frame (201), one end of the pneumatic telescopic rod (504) is fixedly connected to a round block (505), and the top of the slider (213) is fixedly connected to a square block (5).

4. The left-eye switching device for a monocular night vision device according to claim 3, characterized in that: A return spring (506) is provided on the outer surface of the pneumatic telescopic rod (504), one end of the return spring (506) is fixedly connected to one side of the inner wall of the frame (201), and the other end of the return spring (506) is fixedly connected to one side of the round block (505).

5. The left-eye switching device for a monocular night vision device according to claim 4, characterized in that: The U-shaped block (208) is rotatably connected to an air outlet pipe (503) on one side near the top, and the air outlet end of the pneumatic telescopic rod (504) is fixedly connected to a hose (502), one end of the hose (502) is connected to the compression chamber of the pneumatic telescopic rod (504), and the hose (502) is fixedly connected to the air outlet pipe (503).

6. The left-eye switching device for a monocular night vision device according to claim 5, characterized in that: The hose (502) is fixedly connected to a one-way valve 1 near the inner wall of the pneumatic telescopic rod (504); the other end of the pneumatic telescopic rod (504) is fixedly connected to an air inlet pipe (507); one end of the air inlet pipe (507) is connected to the compression chamber of the pneumatic telescopic rod (504); and the air inlet pipe (507) is fixedly connected to a one-way valve 2 near the inner wall of the pneumatic telescopic rod (504).

7. The left-eye switching device for a monocular night vision device according to claim 5, characterized in that: Two L-shaped bars (4) are fixedly connected to one side of the slider (213), racks (401) are fixedly connected to the tops of the two L-shaped bars (4), and a gear (402) is fixedly connected to the outer surface of the air outlet pipe (503), one of the gears (402) is meshed with the rack (401).

8. The left-eye switching device for a monocular night vision device according to claim 7, characterized in that: The outer surface of the air outlet pipe (503) is fixedly connected to a fixing ring (403), and the outer surface of the air outlet pipe (503) is provided with a second torsion spring (404), and the two ends of the second torsion spring (404) are fixedly connected to the fixing ring (403) and the U-shaped block (208) respectively.

9. The left-eye switching device for a monocular night vision device according to claim 5, characterized in that: The U-shaped block (208) is fixedly connected to a limiting strip (212) on one side close to the bottom, and the movable rod (209) is arranged in a T-shape.

10. The left-eye switching device for a monocular night vision device according to claim 5, characterized in that: Two support frames (508) are symmetrically and fixedly connected to the top of the frame (201), and the outer surface of the hose (502) is slidably connected to the inside of the support frames (508).

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