A threaded sealing cabin for an optoelectronic stabilized sighting system

Abstract

The application relates to a threading sealing cabin for an optoelectronic stabilized sighting system, which comprises a rear cover, a middle cover, a front cover, a visible light window, an infrared light window, a motor side threading hole cover plate, a motor side sealing socket, a motor side plug, a code disc side threading hole cover plate, a code disc side sealing socket, a code disc side plug, a motor side threading cable and a code disc side threading cable, the front cover of the sealing cabin is detachably connected with the front end surface of the middle cover through a first conductive sealing strip, the rear cover of the sealing cabin is detachably connected with the rear end surface of the middle cover through a second conductive sealing strip, a local sealing cabin body is formed, the sealing mode of the application is static sealing in general, the sealing is simple, easy to operate, has good sealing effect and high reliability, meanwhile, the threading cable passes through the center of the hollow rotating shaft, the resistance moment generated by the cable is small, and the application requirements of the optoelectronic sighting system can be well met.

Description

Technical Field

[0001] This invention belongs to the technical field of sealing structure for photoelectric stabilization systems, and specifically relates to a wire-sealed chamber for photoelectric stabilization systems. Background Technology

[0002] Electro-optical stabilization systems enable day and night observation and aiming of targets, and provide target designation for precision-guided weapons. Therefore, they are widely used in various moving vehicles such as aircraft, vehicles, and ships. The gyroscope platform of an electro-optical stabilization system is equipped with infrared, television, and laser cameras. To achieve stable observation and designation functions, the gyroscope platform itself has at least two rotational movements: azimuth and pitch, with the pitch movement generally being a limited angle. To adapt to the harsh environmental conditions of moving vehicles and improve product reliability, the electro-optical stabilization system needs to provide a clean, sealed chamber for the gyroscope platform and camera instruments. This sealed chamber must prevent external dust, water vapor, and water from entering and damaging the camera instruments. It must also be filled with dry gas to eliminate the effects of salt spray, mold, and damp heat on the camera instruments, and prevent frost formation on the camera lens when external temperatures change rapidly. Power supply to the instruments within the sealed chamber and communication with the outside world also require cable transmission. Therefore, how to run the cables through the sealed chamber without compromising its airtightness is a design challenge.

[0003] Currently, the common approach to addressing these challenges is to combine dynamic and static seals, connecting the rotating and non-rotating parts of the photoelectric stabilization system to form a single sealed chamber. Cables are run through this sealed chamber to isolate the system from the outside environment. However, this method firstly expands the sealing space, resulting in wasted space and reduced sealing reliability. Secondly, the introduction of a rotating shaft dynamic seal makes installation and adjustment difficult and introduces a large frictional resistance torque, which increases significantly, especially at low temperatures, making it inconvenient to use. Increased or fluctuating frictional resistance torque also reduces servo bandwidth and affects system accuracy.

[0004] Currently, another method to address these challenges is to use a wire-sealing device. This involves installing wire-sealing devices on both sides of the rotating shaft of the photoelectric stabilization system, creating a separate airtight chamber for the rotating part. The advantage of this method is its small sealing space and absence of dynamic sealing links, which improves the sealing effect and reliability. However, it also has serious drawbacks. The wire-sealing device achieves the sealing of the wired cable through glue injection, so it cannot be applied when there are many wires and small holes. Moreover, the glue injection also increases the difficulty of assembly and adjustment. In addition, during limited rotation, the cable is constrained by the silicone rubber adhesive, resulting in excessive tensile torque. Prolonged pulling can also lead to the cable detaching from the silicone rubber joint, causing the seal to fail.

[0005] Therefore, there is an urgent need for a wire-sealed chamber for an optoelectronic stabilization system that can easily achieve airtightness, meet the requirements of wired telecommunication transmission, and not affect system accuracy, is easy to assemble and adjust, has good sealing effect and high reliability, in order to solve the above-mentioned problems. Summary of the Invention

[0006] This invention provides a wire-sealed chamber for an optoelectronic stabilization system, applicable to the field of sealing structure technology for optoelectronic stabilization systems, and solves the existing technical problems of affecting cable telecommunication transmission, large resistance torque, inconvenient assembly and adjustment, and poor sealing performance.

[0007] To achieve the above-mentioned technical objectives, the specific technical solution adopted by the present invention is as follows:

[0008] A wire-sealed housing for an optoelectronic stabilization system includes a rear cover, a middle cover, a front cover, a visible light window, an infrared light window, a motor-side wire-passing hole cover, a motor-side sealing socket, a motor-side plug, a code disk-side wire-passing hole cover, a code disk-side sealing socket, a code disk-side plug, a motor-side wire-passing cable, and a code disk-side wire-passing cable. The front cover of the housing is detachably connected to the front end face of the middle cover via a first conductive sealing strip, and the rear cover is detachably connected to the rear end face of the middle cover via a second conductive sealing strip, forming a partially sealed housing. The visible light window and infrared light window of the housing are sealed in two stepped holes in the front cover using glue. The code disk-side wire-passing hole of the housing... The cover plate is installed on the axial end faces of the wiring holes on both sides of the middle cover through the third and fourth conductive sealing strips. The sealing sockets on the motor side and the code disk side of the sealed chamber are fixed to the lateral end faces of the wiring holes on both sides of the middle cover through rubber sealing gaskets. The wiring cables on the motor side and the code disk side of the sealed chamber are passed through from the outside and connected to the output ends of the corresponding sealing sockets on the motor side and the code disk side, so as to facilitate the power supply of the sealing sockets on the motor side and the code disk side to the corresponding electronic components. The plug end of the motor side plug of the sealed chamber is inserted into the corresponding sealing socket on the motor side, and the plug end of the code disk side plug of the sealed chamber is inserted into the corresponding sealing socket on the code disk side.

[0009] Furthermore, the exposed end faces of the visible light window and the infrared light window respectively contact the end faces of the corresponding stepped holes, and the cylindrical surfaces of the visible light window and the infrared light window maintain a gap of 0.5 to 1 mm with the hole surfaces of the corresponding stepped holes. Liquid silicone rubber is filled in this gap to achieve potting and sealing.

[0010] Furthermore, the front and rear ends of the middle cover are respectively provided with a first sealing groove and a second sealing groove. A first conductive sealing strip is embedded in the first sealing groove, and a second conductive sealing strip is embedded in the second sealing groove. The connection between the middle cover of the sealed chamber and the front cover and the rear cover is a static sealing end face fit.

[0011] Furthermore, the mating end faces of the motor-side wire hole cover and the code disk-side wire hole cover are respectively provided with corresponding third sealing grooves and fourth sealing grooves. A third conductive sealing strip is embedded in the third sealing groove, and a fourth conductive sealing strip is embedded in the fourth sealing groove. The connection between the inner cover of the sealing chamber and the motor-side wire hole cover and the code disk-side wire hole cover is a static sealing end face fit.

[0012] Furthermore, both the motor-side sealing socket and the code disk-side sealing socket are micro-rectangular glass-sealed electrical connectors with wires. The wire outlets of both the motor-side sealing socket and the code disk-side sealing socket are connected to external cables through the wire hole outside the sealed chamber, while the plug-in and plug-out ends of the motor-side sealing socket and the code disk-side sealing socket are inside the inner cover.

[0013] Furthermore, a pitch main frame is provided on the middle cover. Pitch hollow rotating shafts and middle cover wiring holes are provided on both horizontal sides of the pitch main frame. The motor-side wiring cable and the code disk-side wiring cable are introduced from the through holes on the upper end face of both sides of the pitch main frame, and pass through the corresponding pitch hollow rotating shaft and middle cover wiring hole, respectively, and are connected to the outlet end of the motor-side sealing socket and the code disk-side sealing socket.

[0014] Furthermore, the motor-side cable and the encoder-side cable are both single-piece cables, and the first, second, third, and fourth conductive sealing strips are all made of high-polymer elastic rubber strips.

[0015] Furthermore, the sealed chamber is installed on the hollow rotating shafts on the motor side and the hollow rotating shafts on the code disk side, located on both sides of the pitch main frame. The outer sides of the pitch main frame of the sealed chamber are equipped with motor side main frame cover plates and code disk side main frame cover plates.

[0016] By adopting the above technical solution, the present invention can also bring the following beneficial effects:

[0017] 1. This invention provides a wire-sealing chamber for an optoelectronic stabilization system, comprising a rear cover, a middle cover, a front cover, a visible light window, an infrared light window, a motor-side wire-passing hole cover, a motor-side sealing socket, a motor-side plug, a code disk-side wire-passing hole cover, a code disk-side sealing socket, a code disk-side plug, a motor-side wire-passing cable, and a code disk-side wire-passing cable. The front cover is sealed to the visible light window and the infrared light window by potting adhesive. The middle cover is sealed to the rear cover and the front cover by a first conductive sealing strip and a second conductive sealing strip. The middle cover is sealed to the motor-side wire-passing hole cover and the code disk-side wire-passing hole cover by a third conductive sealing strip and a fourth conductive sealing strip. The system achieves sealing through a single layer. The sealing sockets on the motor side and the encoder side are sealed by rubber gaskets built into the sockets. The cable outlet of the sealing socket outside the sealed chamber is led out through the cable passage hole of the middle cover from the hollow shaft of the motor and the hollow shaft of the encoder, and is interconnected with the external cable. The plug-in end of the sealing socket inside the sealed chamber is interconnected with the internal cable through plug insertion and removal. This achieves structural sealing and cable routing. The sealing method is static sealing, which is simple, easy to operate, and has good sealing effect and high reliability. At the same time, the cable passes through the center of the hollow shaft, resulting in a small resistance torque, which can well meet the application requirements of the photoelectric aiming system.

[0018] 2. This invention provides a wire-sealed chamber for an optoelectronic stabilization system. It utilizes a micro-rectangular glass sealing socket on both the motor-side and code disk-side sealing sockets. This design features small size, high core density, high sealing performance, and a built-in rubber sealing gasket. By using conductive particles filled in a specific ratio into the first, second, third, and fourth conductive sealing strips—all made of high-molecular-weight elastic silicone rubber—the sealing and conductivity are effectively combined. This achieves both environmental and electromagnetic sealing functions simultaneously. Furthermore, it is a standardized and serialized electrical connector product with standardized specifications and installation procedures, making selection economical and convenient, and installation simple and reliable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the wire-sealed compartment for an optoelectronic stabilization system in this embodiment;

[0021] Figure 2 This embodiment shows a schematic diagram of the connection structure between the code disk-side sealed socket and the code disk-side plug.

[0022] Figure 3 This is a schematic diagram of the connection structure between the front cover and the visible light window in this embodiment;

[0023] Figure 4 This is a schematic diagram of the connection structure between the first conductive sealing strip and the front cover in this embodiment;

[0024] Figure 5 This is a schematic diagram of the connection structure between the encoder side cable and the encoder side cable in this embodiment;

[0025] Figure 6 This is a schematic diagram of the connection structure between the pitch main frame and the pitch main frame in this embodiment;

[0026] The components are as follows: 1. Rear cover; 2. Middle cover; 3. Front cover; 4. Motor side cable hole cover; 5. Motor side sealed socket; 6. Motor side plug; 7. Encoder side cable hole cover; 8. Encoder side sealed socket; 9. Encoder side plug; 10. Encoder side cable; 11. Motor side cable; 12. Visible light window; 13. Infrared light window; 14. Sealed chamber; 15. Pitch main frame; 16. Motor side hollow shaft; 17. Motor side main frame cover; 18. Encoder side hollow shaft; 19. Encoder side main frame cover; 201. First conductive sealing strip; 202. Second conductive sealing strip; 701. Fourth conductive sealing strip. Detailed Implementation

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0030] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0031] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0032] Example 1

[0033] In one embodiment of the present invention, such as Figures 1 to 6As shown, a wire-sealed cabin for an optoelectronic stabilization system includes a rear cover 1, a middle cover 2, a front cover 3, a visible light window 12, an infrared light window 13, a motor-side wire-passing hole cover 4, a motor-side sealing socket 5, a motor-side plug 6, a code disk-side wire-passing hole cover 7, a code disk-side sealing socket 8, a code disk-side plug 9, a motor-side wire-passing cable 11, and a code disk-side wire-passing cable 10. The front cover 3 of the sealed cabin is detachably connected to the front end face of the middle cover 2 via a first conductive sealing strip 201, and the rear cover 1 of the sealed cabin is detachably connected to the rear end face of the middle cover 2 via a second conductive sealing strip 202, forming a partially sealed cabin body 14. The visible light window 12 and the infrared light window 13 of the sealed cabin are installed in two stepped holes in the front cover 3 by potting glue for sealing. The cover plate 7 of the wiring hole on the side of the sealed chamber is installed on the axial end face of the wiring hole on both sides of the middle cover 2 through the third conductive sealing strip and the fourth conductive sealing strip 701. The sealing socket 5 on the motor side and the sealing socket 8 on the code disk side are fixed to the lateral end face of the wiring hole on both sides of the middle cover 2 through the rubber sealing gasket. The wiring cable 11 on the motor side and the wiring cable 10 on the code disk side are respectively passed through from the outside and connected to the output end of the corresponding sealing socket 5 on the motor side and the sealing socket 8 on the code disk side, so as to facilitate the power supply of the corresponding electronic components to the sealing socket 5 on the motor side and the sealing socket 8 on the code disk side. The plug end of the plug 6 on the motor side of the sealed chamber is plugged into the corresponding sealing socket 5 on the motor side, and the plug end of the plug 9 on the code disk side of the sealed chamber is plugged into the corresponding sealing socket 8 on the code disk side.

[0034] The exposed end faces of the visible light window 12 and the infrared light window 13 are in contact with the end faces of the corresponding stepped holes. The cylindrical surfaces of the visible light window 12 and the infrared light window 13 maintain a gap of 0.5 to 1 mm with the hole surfaces of the corresponding stepped holes. Liquid silicone rubber is filled in the gap to achieve potting and sealing.

[0035] The front and rear ends of the middle cover 2 are respectively provided with a first sealing groove and a second sealing groove. A first conductive sealing strip 201 is embedded in the first sealing groove, and a second conductive sealing strip 202 is embedded in the second sealing groove. The connection between the middle cover 2 of the sealed chamber and the front cover 3 and the rear cover 1 is a static sealing end face fit. The mating end faces of the motor side wire hole cover plate 4 and the code disk side wire hole cover plate 7 are respectively provided with corresponding third sealing grooves and fourth sealing grooves. A third conductive sealing strip is embedded in the third sealing groove, and a fourth conductive sealing strip 701 is embedded in the fourth sealing groove. The connection between the middle cover 2 of the sealed chamber and the motor side wire hole cover plate 4 and the code disk side wire hole cover plate 7 is a static sealing end face fit.

[0036] Both the motor-side sealing socket 5 and the code disk-side sealing socket 8 are wired micro-rectangular glass-sealed electrical connectors. The wire outlets of both the motor-side sealing socket 5 and the code disk-side sealing socket 8 are connected to external cables through the wire hole outside the sealed chamber. The plug-in and plug-out ends of the motor-side sealing socket 5 and the code disk-side sealing socket 8 are inside the middle cover 2.

[0037] The sealed chamber 14 is mounted on the motor-side hollow shaft 16 and the encoder-side hollow shaft 18 located on both sides of the pitch main frame 15. The motor-side main frame cover plate 17 and the encoder-side main frame cover plate 19 are installed on the outer periphery of both sides of the pitch main frame 15. The pitch main frame 15 is provided on the middle cover 2. Pitch hollow shafts and wiring holes of the middle cover 2 are provided on both horizontal sides of the pitch main frame 15. The motor-side wiring cable 11 and the encoder-side wiring cable 10 are introduced from the through holes on the upper end face of both sides of the pitch main frame 15, and pass through the corresponding wiring holes on the pitch hollow shafts and the middle cover 2, respectively, and are connected to the outlet ends of the motor-side sealing socket 5 and the encoder-side sealing socket 8.

[0038] Both the motor-side cable 11 and the encoder-side cable 10 are single-piece cables. The first conductive sealing strip 201, the second conductive sealing strip 202, the third conductive sealing strip, and the fourth conductive sealing strip 701 are all made of high-polymer elastic rubber strips. Both the motor-side cable 11 and the encoder-side cable 10 are hollow cables without potting treatment. This is the same as the hollow shaft cable threading method of the overall sealed chamber method, which ensures that the resistance torque is minimized under cable torsion and tension. Moreover, cable sealing failure will not occur when the cable is torsioned and pulled in a non-airtight chamber. The sealed chamber 14 is a partially airtight chamber with a small sealing space and is entirely statically sealed. Therefore, it has the advantages of simple engineering operation and good sealing effect.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wire-through seal capsule for an electro-optical stabilized sighting system, characterized by: The application relates to a sealed cabin for a motor and a code disc, which comprises a rear cover (1), a middle cover (2), a front cover (3), a visible light window (12), an infrared light window (13), a motor-side wire-through hole cover plate (4), a motor-side sealed socket (5), a motor-side plug (6), a code disc-side wire-through hole cover plate (7), a code disc-side sealed socket (8), a code disc-side plug (9), a motor-side wire-through cable (11) and a code disc-side wire-through cable (10), the front cover (3) is detachably connected with the front end face of the middle cover (2) through a first conductive sealing strip (201), the rear cover (1) is detachably connected with the rear end face of the middle cover (2) through a second conductive sealing strip (202), a local sealed cabin body (14) is formed, the visible light window (12) and the infrared light window (13) are installed in two stepped holes of the front cover (3) through glue filling sealing, the code disc-side wire-through hole cover plate (7) is installed on the axial end faces of two wire-through holes of the middle cover (2) through a third conductive sealing strip and a fourth conductive sealing strip (701), the motor-side sealed socket (5) and the code disc-side sealed socket (8) are fixed on the lateral end faces of the two wire-through holes of the middle cover (2) through rubber sealing pads, the motor-side wire-through cable (11) and the code disc-side wire-through cable (10) are respectively connected with the wire-out ends of the corresponding motor-side sealed socket (5) and code disc-side sealed socket (8) through wire-through holes outside the sealed cabin, the motor-side sealed socket (5) and the code disc-side sealed socket (8) are connected with corresponding electronic components for power supply, the plug-in end of the motor-side plug (6) is plugged into the corresponding motor-side sealed socket (5), and the plug-in end of the code disc-side plug (9) is plugged into the corresponding code disc-side sealed socket (8).

2. The through-the-lens capsule of claim 1, wherein: The wire-out end faces of the visible light window (12) and the infrared light window (13) are respectively in contact with the end faces of corresponding stepped holes, the cylindrical faces of the visible light window (12) and the infrared light window (13) are kept apart from the hole faces of the corresponding stepped holes by a gap of 0.5-1 mm, and liquid silicone rubber is filled in the gap to realize glue filling sealing.

3. The through-the-lens capsule of claim 2, wherein: The front and rear end faces of the middle cover (2) are respectively provided with a first sealing groove and a second sealing groove, the first conductive sealing strip (201) is embedded in the first sealing groove, the second conductive sealing strip (202) is embedded in the second sealing groove, and the connection between the middle cover (2) and the front cover (3) and the rear cover (1) is static sealing end face cooperation.

4. The through-the-lens capsule of claim 3, wherein: The cooperation end faces of the motor-side wire-through hole cover plate (4) and the code disc-side wire-through hole cover plate (7) are respectively provided with corresponding third sealing grooves and fourth sealing grooves, the third conductive sealing strip is embedded in the third sealing groove, the fourth conductive sealing strip (701) is embedded in the fourth sealing groove, and the connection between the middle cover (2) and the motor-side wire-through hole cover plate (4) and the code disc-side wire-through hole cover plate (7) is static sealing end face cooperation.

5. A wire feed capsule for an electro-optical stabilized sighting system according to claim 4, characterized in that: The motor-side sealed socket (5) and the code disc-side sealed socket (8) are micro-rectangular glass-sealing electric connectors with wires, the wire-out ends of the motor-side sealed socket (5) and the code disc-side sealed socket (8) are connected with external cables at wire-through holes outside the sealed cabin, and the plug-in ends of the motor-side sealed socket (5) and the code disc-side sealed socket (8) are in the middle cover (2).

6. A wire feed capsule for an electro-optical stabilized sighting system according to claim 5, characterized in that: The middle cover (2) is provided with a pitch main frame (15), and the horizontal two sides of the pitch main frame (15) are provided with pitch hollow rotating shafts and threading holes; the motor side threading cable (11) and the code disc side threading cable (10) are introduced from the through holes of the upper end faces of the two sides of the pitch main frame (15), and the whole passes through the corresponding pitch hollow rotating shafts and the threading holes on the middle cover (2) and is connected with the outgoing line ends of the motor side sealed socket (5) and the code disc side sealed socket (8) respectively.

7. The through-the-lens capsule of claim 6, wherein: The motor side threading cable (11) and the code disc side threading cable (10) are whole cables, and the first conductive sealing strip (201), the second conductive sealing strip (202), the third conductive sealing strip and the fourth conductive sealing strip (701) are all made of high polymer elastic rubber strips.

8. The through-the-lens capsule of claim 7, wherein: The sealed cabin body (14) is installed on the motor side hollow rotating shaft (16) and the code disc side hollow rotating shaft (18) located on the two sides of the pitch main frame (15), and the pitch main frame (15) is provided with the motor side main frame cover plate (17) and the code disc side main frame cover plate (19) on the periphery of the two sides.

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