Threading sealed cabin for photoelectric sight-stabilizing system

Abstract

The invention relates to a threading sealed cabin for a photoelectric sight-stabilizing 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 coded disc side threading hole cover plate, a coded disc side sealing socket, a coded disc side plug, a motor side threading cable and a coded disc side threading cable, the sealing cabin front cover is detachably connected with the front end face of the middle cover through the first conductive sealing strip, the sealing cabin rear cover is detachably connected with the rear end face of the middle cover through the second conductive sealing strip, and therefore a locally-sealed sealing cabin body is formed, in a word, the sealing mode is static sealing, sealing is simple, operation is easy, the sealing effect is good, and reliability is high; meanwhile, the threading cable penetrates through the center of the hollow rotating shaft, the resistance moment generated by the cable is small, and the application requirement of a photoelectric aiming system can be well met.

Description

Technical Field

[0001] The invention belongs to the technical field of sealing structures of optoelectronic stabilization systems, and in particular relates to a threading sealing cabin for optoelectronic stabilization systems. Background Art

[0002] The optoelectronic stabilized aiming system can realize day and night observation of the target and provide target indication for precision-guided weapons. Therefore, it is widely used in various types of moving vehicles such as aircraft, vehicles, and ships. The gyro platform of the optoelectronic stabilized aiming system is equipped with infrared, television, laser and other cameras. In order to realize stable observation and indication functions, the gyro platform itself has at least two rotational motions, azimuth and pitch, and the pitch motion is generally a limited angle. In order to adapt to the harsh environmental conditions of the moving vehicle and improve the reliability of the product, the optoelectronic stabilized aiming system needs to provide a clean sealed cabin for the gyro platform and the camera. The sealed cabin is to prevent external dust, water vapor, water, etc. from entering the cabin and damaging the camera. At the same time, it is also necessary to fill and store dry gas to eliminate the effects of salt spray, mold, humidity and heat on the camera, and prevent the camera lens from frosting when the external temperature changes rapidly. The power supply of the instruments in the sealed cabin and the telecommunications transmission with the outside world also need to be transmitted through cables, so how to realize the threading of the sealed cabin without destroying the airtightness of the sealed cabin becomes a design difficulty.

[0003] At present, the method to solve such difficulties is generally to use a combination of dynamic seals and static seals to connect the rotating part and the non-rotating part of the optoelectronic stabilization system internally to form an integral sealed cabin. The cables are threaded in the integral sealed cabin to achieve isolation from the outside world. However, this method firstly expands the sealing space, resulting in waste of sealing space and reduced sealing reliability. Secondly, it introduces a dynamic seal on the rotating shaft, which will make the seal difficult to install and adjust, and bring about a large friction torque. In particular, the friction torque increases significantly in low temperature environments, which is very inconvenient to use. The increase in friction torque or the large variation in the amplitude will also reduce the servo bandwidth and affect the accuracy of the system.

[0004] Another method to solve such difficulties is to use a threading sealing device. Threading sealing devices are set on the rotating shafts on both sides of the rotating part of the optoelectronic stabilization system to form a separate airtight cabin for the rotating part. The advantages of this method are small sealing space and no dynamic sealing link, which improves the sealing effect and reliability. However, it also has serious disadvantages. The threading sealing device achieves cable sealing by injecting glue, so it cannot be used in cases where the hole is small and there are many wires. In addition, the injection of glue also increases the difficulty of installation and adjustment. At the same time, when the cable is rotated limitedly, due to the bonding constraint of silicone rubber, there is a problem of excessive pulling torque. If it is pulled for a long time, there is also a problem of detachment of the joint between the cable and the silicone rubber, resulting in sealing failure.

[0005] Therefore, there is an urgent need for a wire-threading sealed cabin for an optoelectronic stabilized aiming system that can simply achieve airtightness, meet the requirements of wire-threading telecommunications transmission, and not affect the system accuracy, is easy to install and adjust, has good sealing effect and high reliability, so as to solve the above-mentioned problems. Summary of the invention

[0006] The invention provides a threading sealed cabin for an optoelectronic stabilized aiming system, which is applicable to the technical field of sealing structures of optoelectronic stabilized aiming systems and solves the existing technical problems of affecting cable telecommunication transmission, large resistance torque, inconvenient installation and adjustment, and poor sealing.

[0007] In order to achieve the above technical objectives, the specific technical solutions adopted by the present invention are:

[0008] A threading sealed cabin for an optoelectronic stabilized aiming system comprises a rear cover, a middle cover, a front cover, a visible light window, an infrared light window, a motor side threading hole cover, a motor side sealed socket, a motor side plug, a code disk side threading hole cover, a code disk side sealed socket, a code disk side plug, a motor side threading cable and a code disk side threading cable, the front cover of the sealed cabin is detachably connected to the front end face of the middle cover through a first conductive sealing strip, the rear cover of the sealed cabin is detachably connected to the rear end face of the middle cover through a second conductive sealing strip to form a partially sealed sealed cabin body, the visible light window and the infrared light window of the sealed cabin are installed in two step holes of the front cover by glue filling and sealing, the threading hole on the code disk side of the sealed cabin is The cover plate is installed on the axial end faces of the threading holes on both sides of the middle cover through the third conductive sealing strip and the fourth conductive sealing strip. The sealed socket on the motor side of the sealed cabin and the sealed socket on the code disk side are fixed on the lateral end faces of the threading holes on both sides of the middle cover through rubber sealing pads. The threading cables on the motor side of the sealed cabin and the threading cables on the code disk side are respectively inserted from the outside and connected with the corresponding outlet ends of the motor side sealed socket and the code disk side sealed socket, so that the motor side sealed socket and the code disk side sealed socket can supply power to the corresponding electronic components. The plug-in end of the plug on the motor side of the sealed cabin is plugged into the corresponding motor side sealed socket, and the plug-in end of the plug on the code disk side of the sealed cabin is plugged into the corresponding code disk side sealed socket.

[0009] Furthermore, the external leakage end faces of the visible light window and the infrared light window are in contact with the end faces of the corresponding step holes respectively, and a gap of 0.5 to 1 mm is maintained between the cylindrical surfaces of the visible light window and the infrared light window and the hole surface of the corresponding step hole, and liquid silicone rubber is filled in the gap to achieve glue sealing.

[0010] Furthermore, the front and rear end faces of the middle cover are respectively provided with a first sealing groove and a second sealing groove, the first sealing groove is embedded with a first conductive sealing strip, and the second sealing groove is embedded with a second conductive sealing strip, and the connection between the middle cover of the sealed cabin and the front cover and the rear cover are all static sealing end face matching.

[0011] Furthermore, the mating end faces of the motor side wire hole cover plate and the code disk side wire hole cover plate are respectively provided with corresponding third sealing grooves and fourth sealing grooves, the third sealing groove is embedded in the third conductive sealing strip, the fourth sealing groove is embedded in the fourth conductive sealing strip, and the connection between the sealed cabin cover and the motor side wire hole cover plate and the code disk side wire hole cover plate is a static sealing end face match.

[0012] Furthermore, the motor side sealed socket and the code disk side sealed socket are both wired micro-rectangular glass-sealed sealed electrical connectors, and the outlet ends of the motor side sealed socket and the code disk side sealed socket are connected to the external cables at the wire holes outside the sealed cabin, and the plug-in and unplug ends of the motor side sealed socket and the code disk side sealed socket are inside the middle cover.

[0013] Furthermore, a pitch main frame is provided on the middle cover, and pitch hollow rotating shafts and middle cover threading holes are provided on both horizontal sides of the pitch main frame. The wire cables on the motor side of the sealed cabin and the wire cables on the code disk side are introduced from the through holes on the upper end surfaces on both sides of the pitch main frame, and the entire cable passes through the corresponding pitch hollow rotating shafts and the middle cover threading holes, and are respectively connected to the outlet ends of the motor side sealing socket and the code disk side sealing socket.

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

[0015] Furthermore, the sealed cabin body is installed on the motor side hollow shaft and the code disc side hollow shaft located on both sides of the pitch main frame, and the motor side main frame cover and the code disc side main frame cover are installed on the periphery of both sides of the pitch main frame of the sealed cabin.

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

[0017] 1. The present invention provides a threading sealed cabin for an optoelectronic stabilized aiming system, which is composed of a rear cover, a middle cover, a front cover, a visible light window, an infrared light window, a motor side threading hole cover, a motor side sealed socket, a motor side plug, a code disk side threading hole cover, a code disk side sealed socket, a code disk side plug, a motor side threading cable, and a code disk side threading cable. The front cover is sealed with the visible light window and the infrared light window by glue filling, the middle cover is sealed with the rear cover and the front cover by a first conductive sealing strip and a second conductive sealing strip, the middle cover is sealed with the motor side threading hole cover and the code disk side threading hole cover by a third conductive sealing strip and a fourth conductive sealing strip. The sealing strip is used to achieve sealing; the middle cover and the sealing socket on the motor side and the sealing socket on the code disk side are sealed through the rubber sealing gaskets provided by the sockets. The outlet ends of the sealing sockets outside the sealed cabin are led out from the hollow shaft of the motor and the hollow shaft of the code disk through the wire holes in the middle cover, and are cross-linked with the external cables. The plug-in and pull-out ends of the sealing sockets in the sealed cabin are cross-linked with the internal cables through the plug-in, thus achieving structural sealing and threading. The sealing methods are all static sealing, which is simple, easy to operate, and has good sealing effect and high reliability. At the same time, the threaded cables pass through the center of the hollow shaft, and the resistance torque generated by the cables is small, which can well meet the application requirements of the optoelectronic aiming system.

[0018] 2. The present invention provides a threading sealed cabin for an optoelectronic stabilized aiming system, which adopts a micro-rectangular glass-sealed sealed socket through the motor side sealing socket and the code disk side sealing socket, and has the characteristics of small size, large core density, high sealing performance, and built-in rubber sealing gasket. The first conductive sealing strip, the second conductive sealing strip, the third conductive sealing strip, and the fourth conductive seal are all made of a polymer elastic strip in which conductive particles are filled in a certain proportion in silicone rubber, so that sealing and conductivity are well combined together, and environmental sealing and electromagnetic sealing functions can be achieved at the same time. Moreover, it is a type of standardized and serialized electrical connector product, and the specifications and installation operations are all based on standards. Therefore, the selection is economical and convenient, and the installation operation is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a threading sealed cabin for an electro-optical stabilization aiming system in this embodiment;

[0021] Figure 2 Schematic diagram of the connection structure between the code disk side sealed socket and the code disk side plug in this implementation;

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

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

[0024] Figure 5 It is a schematic diagram of the connection structure between the threading cable on the code disk side and the threading cable on the code disk side in this implementation;

[0025] Figure 6 Schematic diagram of the connection structure between the elevation main frame and the pitch main frame in this embodiment;

[0026] Among them: 1. rear cover; 2. middle cover; 3. front cover; 4. cover plate for threading holes on the motor side; 5. sealed socket on the motor side; 6. plug on the motor side; 7. cover plate for threading holes on the code disk side; 8. sealed socket on the code disk side; 9. plug on the code disk side; 10. cable threading on the code disk side; 11. cable threading on the motor side; 12. visible light window; 13. infrared light window; 14. sealed cabin; 15. main pitch frame; 16. hollow shaft on the motor side; 17. cover plate for the main frame on the motor side; 18. hollow shaft on the code disk side; 19. cover plate for the main frame on the code disk side; 201. first conductive sealing strip; 202. second conductive sealing strip; 701. fourth conductive sealing strip. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. 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 in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0029] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present invention, it should be understood by those skilled in the art that an 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 described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0030] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

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

[0032] Example 1

[0033] In one embodiment of the present invention, Figures 1 to 6As shown, a threading sealed cabin for an optoelectronic stabilized aiming system 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 threading hole cover plate 4, a motor side sealing socket 5, a motor side plug 6, a code disk side threading hole cover plate 7, a code disk side sealing socket 8, a code disk side plug 9, a motor side threading cable 11 and a code disk side threading cable 10, the front cover 3 of the sealed cabin is detachably connected to the front end face of the middle cover 2 through a first conductive sealing strip 201, the rear cover 1 of the sealed cabin is detachably connected to the rear end face of the middle cover 2 through a second conductive sealing strip 202, so as to form a partially sealed sealed cabin body 14, the visible light window 12 and the infrared light window 13 of the sealed cabin are installed in two step holes of the front cover 3 by means of glue injection and sealing, The sealed cabin code disk side threading hole cover plate 7 is installed on the axial end faces of the threading holes on both sides of the middle cover 2 through the third conductive sealing strip and the fourth conductive sealing strip 701. The sealed cabin motor side sealing socket 5 and the code disk side sealing socket 8 are fixed to the lateral end faces of the threading holes on both sides of the middle cover 2 through rubber sealing pads. The sealed cabin motor side threading cable 11 and the code disk side threading cable 10 are respectively inserted from the outside and connected to the corresponding motor side sealing socket 5 and the code disk side sealing socket 8. The outlet ends are convenient for the motor side sealing socket 5 and the code disk side sealing socket 8 to supply power to the corresponding electronic components. The plug-in end of the sealed cabin motor side plug 6 is plugged into the corresponding motor side sealing socket 5, and the plug-in end of the sealed cabin code disk side plug 9 is plugged into the corresponding code disk side sealing socket 8.

[0034] The external leakage end faces of the visible light window 12 and the infrared light window 13 are in contact with the end faces of the corresponding step holes respectively. 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 surface of the corresponding step hole, and the gap is filled with liquid silicone rubber to achieve glue sealing.

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

[0036] The motor side sealing socket 5 and the code disk side sealing socket 8 are both wired micro-rectangular glass-sealed sealed electrical connectors. The outlet ends of the motor side sealing socket 5 and the code disk side sealing socket 8 are connected to external cables at the wire holes outside the sealed cabin, and the plug-in and unplug 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 cabin body 14 is installed on the motor side hollow shaft 16 and the code disk side hollow shaft 18 located on both sides of the pitch main frame 15. The motor side main frame cover 17 and the code disk side main frame cover 19 are installed on both sides of the pitch main frame 15 of the sealed cabin. The pitch main frame 15 is arranged on the middle cover 2. The pitch hollow shaft and the middle cover 2 threading holes are arranged on both horizontal sides of the pitch main frame 15. The sealed cabin motor side threading cable 11 and the code disk side threading cable 10 are introduced from the upper end surface through holes on both sides of the pitch main frame 15, and the whole cable passes through the corresponding pitch hollow shaft and the threading holes on the middle cover 2, and is respectively connected to the outlet ends of the motor side sealed socket 5 and the code disk side sealed socket 8.

[0038] The motor side threading cable 11 and the code disk side threading cable 10 are both 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 polymer elastic rubber strips. The motor side threading cable 11 and the code disk side threading cable 10 are both hollow threading cables without potting treatment, which is the same as the hollow shaft threading method of the overall sealed cabin method, ensuring the minimum resistance torque when the cable is twisted and pulled, and the cable sealing failure will not occur when the threading is twisted and pulled in a non-airtight cabin. The sealed cabin body 14 is a local airtight cabin with a small sealing space and is all statically sealed, so it has the advantages of simple engineering operation and good sealing effect.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A wire-threading sealed cabin for an electro-optical stabilization aiming system, characterized in that: The invention 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 threading hole cover plate (4), a motor side sealing socket (5), a motor side plug (6), a code disk side threading hole cover plate (7), a code disk side sealing socket (8), a code disk side plug (9), a motor side threading cable (11) and a code disk side threading cable (10), wherein the front cover (3) is detachably connected to the front end face of the middle cover (2) via a first conductive sealing strip (201), the rear cover (1) is detachably connected to the rear end face of the middle cover (2) via a second conductive sealing strip (202), so as to form a partially sealed sealed cabin (14), the visible light window (12) and the infrared light window (13) are installed in two step holes of the front cover (3) by means of glue injection and sealing, and the The code disk side threading hole cover plate (7) is installed on the axial end faces of the threading holes on both sides of the middle cover (2) through the third conductive sealing strip and the fourth conductive sealing strip (701); the motor side sealing socket (5) and the code disk side sealing socket (8) are fixed on the lateral end faces of the threading holes on both sides of the middle cover (2) through rubber sealing pads; the motor side threading cable (11) and the code disk side threading cable (10) are respectively inserted from the outside and connected to the corresponding outlet ends of the motor side sealing socket (5) and the code disk side sealing socket (8), so that the motor side sealing socket (5) and the code disk side sealing socket (8) can supply power to the corresponding electronic components; the plug-in end of the motor side plug (6) is plugged into the corresponding motor side sealing socket (5); and the plug-in end of the code disk side plug (9) is plugged into the corresponding code disk side sealing socket (8).

2. The cable-threading sealed cabin for an electro-optical stabilization aiming system according to claim 1, characterized in that: The external leakage end faces of the visible light window (12) and the infrared light window (13) are in contact with the end faces of the corresponding step holes respectively, and a gap of 0.5 to 1 mm is maintained between the cylindrical surfaces of the visible light window (12) and the infrared light window (13) and the hole surface of the corresponding step hole, and liquid silicone rubber is filled in the gap to achieve glue sealing.

3. The cable-threading sealed cabin for an electro-optical stabilization aiming system according to claim 2, characterized in that: 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 sealing groove is embedded with a first conductive sealing strip (201), and the second sealing groove is embedded with a second conductive sealing strip (202), and the connection between the middle cover (2) and the front cover (3) and the rear cover (1) is a static sealing end face match.

4. The cable-threading sealed cabin for an electro-optical stabilization aiming system according to claim 3, characterized in that: The matching end faces of the motor side threading hole cover plate (4) and the code disk side threading 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, and the connection between the middle cover (2) and the motor side threading hole cover plate (4) and the code disk side threading hole cover plate (7) is a static sealing end face match.

5. The cable-threading sealed cabin for an electro-optical stabilization aiming system according to claim 4, characterized in that: The motor side sealed socket (5) and the code disk side sealed socket (8) are both wired micro-rectangular glass-sealed sealed electrical connectors; the outlet ends of the motor side sealed socket (5) and the code disk side sealed socket (8) are connected to external cables at the threading holes outside the sealed cabin; the plug-in and unplug ends of the motor side sealed socket (5) and the code disk side sealed socket (8) are inside the middle cover (2).

6. The cable-threading sealed cabin for an electro-optical stabilization aiming system according to claim 5, characterized in that: The middle cover (2) is provided with a pitch main frame (15), and both horizontal sides of the pitch main frame (15) are provided with a pitch hollow shaft and threading holes. The motor side threading cable (11) and the code disk side threading cable (10) are introduced from the upper end surface through holes on both sides of the pitch main frame (15), and the entire cable passes through the corresponding pitch hollow shaft and the threading holes on the middle cover (2), and are respectively connected to the outlet ends of the motor side sealing socket (5) and the code disk side sealing socket (8).

7. The cable-threading sealed cabin for an electro-optical stabilization aiming system according to claim 6, characterized in that: The motor-side threading cable (11) and the encoder-side threading cable (10) are both 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 polymer elastic rubber strips.

8. The cable-threading sealed cabin for an electro-optical stabilization aiming system according to claim 7, characterized in that: The sealed cabin (14) is mounted on a motor-side hollow shaft (16) and a code disc-side hollow shaft (18) located on both sides of the pitch main frame (15), and a motor-side main frame cover plate (17) and a code disc-side main frame cover plate (19) are mounted on both sides of the pitch main frame (15).

Images