Electromagnetic adsorption butt joint structure for microgravity environment and application of electromagnetic adsorption butt joint structure

Abstract

The invention relates to an electromagnetic adsorption butt joint structure for a microgravity environment and application thereof, the butt joint structure comprises an armature component and an electromagnetic component, the armature component comprises a first annular magnetic circuit and two guide iron cores symmetrically distributed at the front end of the first annular magnetic circuit, and each guide iron core comprises an electromagnetic guide rod; the electromagnetic component comprises a second annular magnetic circuit and two electromagnetic coils which are symmetrically distributed at the front end of the second annular magnetic circuit and are opposite in polarity, a guide iron core is further fixed in each electromagnetic coil, and a guide pin hole is formed in each guide iron core; the front end of the guide iron core extends out of the electromagnetic coil, and a guide groove used for guiding the electromagnetic guide rod to enter the guide pin hole is formed in the front end face of the guide iron core. The device is simple in structure, easy to implement and small in size; the adsorption distance can be adjusted and the butt joint force can be controlled by controlling the magnitude of current in the electromagnetic coil; the electromagnetic force directly acts on the armature, and the directivity is good; in cooperation with a guide structure, the complexity of butt joint parts is reduced, and the device is suitable for being used in a microgravity environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of connectors, and in particular relates to an electromagnetic adsorption docking structure for use in a microgravity environment and an application thereof. Background Art

[0002] In order to cope with the increasing demand for multi-functions and applications, satellites are beginning to develop in the direction of modularization. As an important development direction for future satellites, modularization requires the support of matching module connection technology. Satellite module docking requires one or both ends to provide docking power, and both ends are required to have sufficient docking redundancy to prevent mis-insertion.

[0003] At present, satellite module docking mainly adopts mechanical structure docking. The docking structures include three-claw rod type, hermaphroditic type, cone rod type, etc. These docking structures rely on satellite engines, mechanical arms or motors to provide insertion force. At the same time, the docking guidance function is realized through the structure's own guide grooves, guide rods, etc.

[0004] Existing satellite mechanical docking structures, such as the three-claw rod type and the cone rod type, are generally bulky, require additional positioning guidance assistance, and require additional observation devices to confirm the movement position of the equipment. These characteristics make it difficult to achieve the miniaturization of the docking structure and the miniaturization of satellite modules. Summary of the invention

[0005] The purpose of the present invention is to provide an electromagnetic adsorption docking structure for use in a microgravity environment and its application. The docking structure uses the magnetic force generated by an electromagnetic coil to make two connection ends in a microgravity space attract and plug into each other, and the position of the two connection ends is adjusted during the docking process through a guiding structure to meet the automatic docking requirements.

[0006] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to the electromagnetic adsorption docking structure for microgravity environment proposed by the present invention, it includes an armature component 17 and an electromagnetic component 27, the armature component 17 includes a first annular magnetic circuit 171 and two guide cores 172 symmetrically distributed at the front end of the first annular magnetic circuit, the guide core 172 includes an electromagnetic block 1721 and an electromagnetic guide rod 1722; the electromagnetic component 27 includes a second annular magnetic circuit 271 and two electromagnetic coils 272 with opposite polarities symmetrically distributed at the front end of the second annular magnetic circuit 271, and a guide core 273 is fixed in each electromagnetic coil 272, the guide core 273 has a guide pin hole 2732, and the front end of the guide core 273 extends out of the electromagnetic coil 272 and forms a guide groove 2731 on the front end surface for guiding the electromagnetic guide rod to enter the guide pin hole.

[0007] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0008] In the aforementioned electromagnetic adsorption docking structure for microgravity environment, the electromagnetic guide rod 1722 is axially elastically floatingly arranged on the armature component 17 to prevent the electromagnetic guide rod 1722 from being damaged when a large docking error occurs between the armature component and the electromagnetic component.

[0009] The aforementioned electromagnetic adsorption docking structure for microgravity environment, the front end of the electromagnetic block 1721 is also provided with a floating magnetic block 1724, the floating magnetic block 1724 is axially slidably arranged in the electromagnetic block 1721 through the second floating spring 1725, and the conical surface of its front end adapted to the guide groove 2731 extends out of the electromagnetic block 1721; the electromagnetic guide rod 1722 realizes axial elastic floating cooperation with the electromagnetic block 1721 through the first floating spring 1723, and the small diameter end of the front end of the electromagnetic guide rod 1722 passes through the floating magnetic block 1724 and extends out of the electromagnetic block 1721.

[0010] The aforementioned electromagnetic adsorption docking structure for microgravity environment, the first floating spring 1723 presses the bottom end face of the electromagnetic block 1721 through the first magnetic tube 1726, the front end periphery of the first magnetic tube 1726 is also slidably covered with a second magnetic tube 1727, the front end periphery of the second magnetic tube 1727 has a flange, the second floating spring 1725 presses the flange against the floating magnetic block 1724.

[0011] In the aforementioned electromagnetic adsorption docking structure for microgravity environment, the outer periphery of the floating magnetic block 1724 is guided and matched with the inner wall of the electromagnetic block 1721, and the second magnetic cylinder 1727 is radially matched and limited with the floating magnetic block 1724 through the outer periphery of its front end.

[0012] In the aforementioned electromagnetic adsorption docking structure for microgravity environment, the front end of the electromagnetic block 1721 is also provided with a stop surface for preventing the floating magnetic block 1724 from escaping.

[0013] In the aforementioned electromagnetic adsorption docking structure for microgravity environment, the guide groove 2731 is in a tapered shape with a radial dimension gradually shrinking from front to back to meet the docking guidance requirements of a larger angle.

[0014] In the aforementioned electromagnetic adsorption docking structure for microgravity environment, the first annular magnetic circuit 171, the second annular magnetic circuit 271, the guide iron core 172 and the electromagnetic iron core 273 are all composed of soft magnetic bodies.

[0015] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to the application of an electromagnetic adsorption docking structure for a microgravity environment proposed by the present invention, the electromagnetic adsorption docking structure is used to realize the automatic approach of the connector plug and the socket and the locking of the telescopic locking device in the connector before the other components are plugged in.

[0016] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0017] The application of the aforementioned electromagnetic adsorption docking structure for a microgravity environment, wherein the electromagnetic adsorption docking structure stops working after the locking device is locked.

[0018] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above technical solution, the present invention can achieve considerable technical advancement and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0019] Compared with the pure mechanical docking structure, the electromagnetic adsorption docking structure of the present invention has the advantages of simple structure, few parts, easy implementation and small size. By adopting electromagnetic adsorption docking, the adsorption distance can be adjusted and the docking force can be controlled by controlling the current in the electromagnetic coil. The electromagnetic force directly acts on the armature and has good directionality. The electromagnetic adsorption structure cooperates with the guiding structure to reduce the complexity of the docking components and improve the system reliability, which is very suitable for use in aerospace microgravity environment. The two ends of the docking structure of the present invention are distributed on the satellite module to be connected. The magnetic force generated by the electromagnetic coil makes the two ends attract each other and plug in. The self-contained guiding structure realizes the posture adjustment during the docking process. The electromagnet core and the soft magnetic guide rod, while forming a magnetic circuit and increasing the attraction distance, also serve as a guiding and shock-absorbing structure to assist the docking of the entire component.

[0020] When the docking structure of the present invention is applied to the connector, the retractable locking component of the connector can be locked and connected through electromagnetic force; then the retractable mechanical locking component driven by an external motor can complete the long-stroke plug-in of the connector, and the plug-in force can reach more than 1000N, which can meet the needs of various transmission medium plug-in scenarios.

[0021] The electromagnetic adsorption process of the present invention requires only the distance to be measured and controlled, and has low requirements on the control observation module. For close-range docking of satellite modules under microgravity, the electromagnetic adsorption docking structure is adopted, which has the advantages of low complexity, easy implementation and small structure size compared with the pure mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the components of the connector of the present invention;

[0023] Figure 2 It is a schematic diagram of a part of the connector of the present invention after being cut away;

[0024] Figure 3 for Figure 1 Schematic diagram of the plug sideways;

[0025] Figure 4 for Figure 1 A schematic diagram of the structure of the socket;

[0026] Figure 5 for Figure 2 Schematic diagram of the armature components;

[0027] Figure 6 for Figure 2 Schematic diagram of electromagnetic components in;

[0028] Figure 7 for Figure 2 A schematic diagram of the structure of the telescopic locking component;

[0029] Figure 8 for Figure 2 Schematic diagram of the layout of the middle plug transmission module;

[0030] Fig. 9 for Figure 2 Schematic diagram of the arrangement of the transmission module in the middle socket;

[0031] Fig.10 is another cross-sectional view of the connector of the present invention;

[0032] Fig.11 A schematic diagram of the connector plug and socket of the present invention starting electromagnetic adsorption;

[0033] Fig.12 A schematic diagram of the electromagnetic adsorption process of the connector plug and socket of the present invention;

[0034] Fig.13 A schematic diagram of the electromagnetic adsorption of the connector plug and socket of the present invention;

[0035] Fig.14 It is a schematic diagram of the connector of the present invention being locked in place;

[0036] Fig.15 It is a schematic diagram of the composition of the electromagnetic adsorption docking structure of the present invention;

[0037] Fig.16 It is a schematic diagram of the working magnetic circuit of the electromagnetic adsorption docking structure of the present invention.

[0038]

Main component symbol description

[0039] 1: Plug 11: Plug housing

[0040] 12: Telescopic locking component 121 spiral conveyor

[0041] 1211: Drive nut 1212: Fixed sleeve

[0042] 1213: Screw 1214: Ball

[0043] 122: Ball locking head 1221: Locking shaft

[0044] 12211: yield slot 12212: first unlock slot

[0045] 1222: First ball 1223: Second ball

[0046] 1224: Limit sleeve 12241: Ring groove

[0047] 1225: Limit spring 1226: Support sleeve

[0048] 12261: First locking hole 12262: Second locking hole

[0049] 13: First Insulator

[0050] 14: Female transmission module 141: Female optical module

[0051] 142: Female RF module 143: Female high-speed module

[0052] 144: Female low frequency module 145: Female gas path module

[0053] 15: Female end fluid path transmission sheet 16: Guide pin

[0054] 17: Armature component 171: Annular magnetic circuit

[0055] 172: Guide core 1721: Electromagnetic block

[0056] 1722: electromagnetic guide rod 1723: first floating spring

[0057] 1724: floating magnet 1725: second floating spring

[0058] 1726: first magnetic cylinder 1727: second magnetic cylinder

[0059] 2: Socket 21: Socket housing

[0060] 22: Locking ring 221: Locking housing

[0061] 2211: Locking groove 222 Insulation support part

[0062] 223: Second inner conductor 224: Floating spring

[0063] 23: Second insulator 24: Male end transmission module

[0064] 25: Male end fluid transmission unit 26: Guide sleeve

[0065] 27: Electromagnetic component 271: Second annular magnetic circuit

[0066] 272: electromagnetic coil 273: guide core

[0067] 2731: Guide groove 2732: Guide pin hole

[0068] 226: Connecting conductors

[0069] R1: Magnetic resistance of the first annular magnetic circuit R2: Magnetic resistance of the second annular magnetic circuit

[0070] G δ1 : The first air magnetic resistance G δ1 :Second air reluctance DETAILED DESCRIPTION

[0071] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the electromagnetic adsorption docking connector for microgravity environment proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0072] See also Figure 1-14 , which is a schematic structural diagram of various parts of the electromagnetic adsorption docking connector for microgravity environment of the present invention, the connector includes a plug 1 and a socket 2, the plug 1 includes a plug housing 11, the plug housing 11 is annular as a whole, a telescopic locking component 12 is arranged in the cavity at the center of the annular plug housing 11, the telescopic locking component 12 can be driven by a power mechanism along the axial direction of the plug housing 11 Telescopic movement, a first insulator 13 is also provided in the plug housing 11, and a female end transmission module 14 with different functions is fixedly assembled in the first insulator 13. In this embodiment, the first insulator 13 is a central insulator fixedly arranged on the inner ring of the plug housing 11, and the transmission modules are distributed circumferentially along the central insulator. Preferably, the female end transmission module 14 includes a female end optical path module 141, a female end radio frequency module 142, a female end high-speed module 143, a female end low-frequency module 144 and a female end gas path module 145, etc. In this embodiment, the above-mentioned female end transmission modules 14 are all replaceable modular transmission units, and except for the female end high-speed module 143 which has a separate position, the other female end transmission modules 14 have uniform external dimensions and can be interchanged or selected as needed.

[0073] The outer ring of the plug housing 11 is also provided with a female end fluid transmission unit 15, and the front end surface of the plug housing 11 is also provided with a guide pin 16 for guiding and docking with the socket and an armature component 17 for attracting the socket 2 to approach.

[0074] The socket 2 includes a socket housing 21, which is also annular as a whole, and a locking ring 22 is fixedly arranged in the cavity at the center of the socket housing 21. The locking ring 22 can cooperate with the telescopic locking component 12 on the plug 1 for locking, and can drive the socket housing 21 to move toward the plug 1 when the telescopic locking component 12 is axially retracted after being locked with the telescopic locking component 12, so as to achieve a large plug-in force plug-in between the plug and the socket.

[0075] The socket housing 21 is also provided with a second insulator 23, in which a male end transmission module 24 with different functions is fixedly installed. In this embodiment, the second insulator 23 is a central insulator fixedly arranged on the inner circle of the socket housing 21, and the male end transmission modules 24 are distributed circumferentially along the central insulator. Preferably, the male end transmission modules 24 include a male end optical path module 241, a male end radio frequency module 242, a male end high-speed module 243, a male end low-frequency module 244, and a male end gas path module 245. In this embodiment, the above-mentioned male end transmission modules 24 are all replaceable modular transmission units, and except for the male end high-speed module 243 having a separate specific position, the other male end transmission modules 24 have a uniform external size and can be interchanged or selected as needed.

[0076] The outer ring of the socket housing 21 is also provided with a male end fluid transmission unit 25, and the front end surface of the socket housing 21 is also provided with a guide sleeve 26 for guiding and cooperating with the guide pin 16 of the plug and an electromagnetic component 27 for providing an electromagnetic force for the socket to approach the plug. The front end of the guide sleeve 26 has a guide surface that gradually shrinks from front to back, and preferably, the guide surface is conical.

[0077] To prevent leakage, the male end liquid transmission unit 25 and the female end liquid transmission unit 15 of the present invention are separately arranged on the socket housing 21 and the plug housing 11, and are isolated from other transmission modules in the inner circle by the heat conductive rings on the plug housing 21 and the socket housing 11.

[0078] The armature component 17 includes a first annular magnetic circuit 171 and two guide cores 172 symmetrically distributed on one side of the first annular magnetic circuit 171. The first annular magnetic circuit 171 is coaxially arranged with the plug housing 11. The guide core 172 includes an electromagnetic block 1721 and an electromagnetic guide rod 1722. The outer peripheral surface of the electromagnetic block 1721 is connected to the first annular magnetic circuit 171. The electromagnetic guide rod 1722 is used to cooperate with the guide core of the socket to achieve guidance and posture adjustment during adsorption.

[0079] The electromagnetic component 27 includes a second annular magnetic circuit 271 and two electromagnetic coils 272 symmetrically distributed on one side of the second annular magnetic circuit 271. The two electromagnetic coils 272 have opposite polarities, and a guide core 273 is fixed in each electromagnetic coil 272. The front end of the guide core 273 extends out of the electromagnetic coil 272 and the socket housing 21 and forms a guide groove 2731 that gradually shrinks from front to back on the front end surface. The rear end extends out of the electromagnetic coil 272 and is connected and fixed to the second annular magnetic circuit 271. A guide pin hole 2732 coaxial with the guide groove 2731 is also provided in the guide core 273 for inserting the electromagnetic guide rod 1722 at the front end of the armature component 17. The guide groove 2731 can guide the electromagnetic guide rod 1722 so that it can smoothly enter the guide pin hole 2731. In this embodiment, the guide groove 2731 is conical. The setting of the conical guide groove 2731 of the present invention can realize large-angle and large-excursion guidance of the plug and the socket during electromagnetic adsorption, and can also realize the adjustment of the posture between the two, so that the two can be connected accurately.

[0080] The first annular magnetic circuit 171, the second annular magnetic circuit 271, the guide iron core 172 and the electromagnet core 273 of the present invention are all made of soft magnetic materials. The magnetic force of the electromagnet core 273 is guided to the same direction by the magnetic force of the second annular magnetic circuit 271 made of soft magnetic materials, so that the magnetic forces generated by the two electromagnetic coils are connected as a whole, forming a horseshoe-shaped magnet as a whole, which maximizes the suction force in the structural form and makes full use of the magnetic force of the coil. The horseshoe-shaped armature component 17 and the electromagnetic component 27 of the present invention both constitute an electromagnetic circuit, and the current passes through the coil to generate a magnetic field, which is enhanced in the soft magnetic magnetic circuit. The electromagnetic energy is concentrated in the iron core and is mainly used to parameterize the suction force, which can improve the efficiency of the electromagnet. Compared with a single linear solenoid lacking a closed loop, the armature component 17 and the electromagnetic component 27 of the present invention have less magnetic leakage and better utilization efficiency of electromagnetic energy.

[0081] In this embodiment, in order to prevent the electromagnetic guide rod 1722 and the guide core from being misaligned due to the large posture difference between the plug 1 and the socket 2 or other reasons during docking, and thus causing the electromagnetic guide rod 1722 to be damaged, the electromagnetic guide rod 1722 can float along the axial direction of the armature component 17. Specifically, the electromagnetic guide rod 1722 is connected to the electromagnetic block 1721 through the first floating spring 1723. A floating magnetic block 1724 is also provided at the front end of the electromagnetic block 1721 in a floating manner. The floating magnetic block 1724 has a conical surface adapted to the guide groove 2731 on the socket guide core 273. The rear end of the floating magnetic block 1724 is located in the cavity of the electromagnetic block 1721 and is floatingly connected to the bottom end surface of the electromagnetic block 1721 through the second floating spring 1725. The floating magnetic block 1724 achieves axial forward limit by the cooperation of the outer peripheral stepped surface of its front end with the front stop surface of the electromagnetic block 1721. The floating magnet 1724 has a through hole for the front end of the electromagnetic guide rod 1722 to pass through, and the outer periphery of the front end of the electromagnetic guide rod 1722 cooperates with a small gap between the inner wall of the through hole, and the rear end of the electromagnetic guide rod 1722 is axially limited by the floating magnet 1724. The first floating spring 1723 provides the electromagnetic guide rod 1722 with an axial force to separate it from the floating magnet 1724. The first floating spring 1723 presses the bottom end face of the electromagnetic block 1721 through the first magnetic tube 1726. The outer periphery of the front end of the first magnetic tube 1726 is also slidably covered with a second magnetic tube 1727. The outer periphery of the front end of the second magnetic tube 1727 has a flange, and the second floating spring 1725 presses the flange onto the floating magnet 1724. To prevent the electromagnetic guide rod 1722 and the floating magnet 1724 from swaying when floating axially, the outer circumference of the floating magnet 1724 is slidably guided with the inner wall of the electromagnetic block 1721, and the outer circumference of the folded edge on the second magnetic cylinder 1727 is radially limited with the inner circumference of the rear end cavity of the floating magnet 1724.

[0082] In the embodiment of the present invention, there are two guide pins 16 on the plug housing 11, and the two guide pins 16 and the two electromagnetic guide rods 1722 are evenly distributed along the circumference of the plug housing 11, and the two guide pins 16 are symmetrically distributed on the plug housing 11, and the two electromagnetic guide rods 1722 are also symmetrically distributed on the plug housing 11. Correspondingly, the two guide sleeves 26 and the two guide cores 273 evenly distributed around the socket housing 12 are divided into two groups, and the two guide sleeves 26 are symmetrically distributed, and the two guide cores are also symmetrically distributed. In order to prevent the above-mentioned guiding structure from being misinserted when the plug and the socket are docked, the radial dimension of the guiding pin 16 is larger than the radial dimension of the electromagnetic guide rod 1722, and the radial dimension of the corresponding hole in the guide sleeve 26 that is adapted to the guiding pin 16 is also larger than the radial dimension of the guide pin hole 2731 on the electromagnetic core. As a result, when misinsertion occurs, the guiding pin 16 is stuck at the opening of the small-sized guide pin hole 2731. At this time, the electromagnetic guide rod 1722, which is more easily damaged, also reaches the large-sized guide sleeve 26 and is not subjected to force, which can effectively prevent the electromagnetic guide rod 1722 from being damaged. At the same time, the cooperation between the guiding pin 16 and the guide pin hole 2731 also makes it impossible for the plug and the socket to get closer. They need to be separated and adjusted before docking again, thereby avoiding damage caused by continued incorrect insertion.

[0083] In addition, the provision of the guide pin 16 of the present invention can also prevent damage to the electromagnetic guide rod 1722 caused by excessive difference in posture between the plug and the socket. When a large docking error occurs between the plug and the socket, the guide structure cannot play a guiding role. At this time, the guide structure will first contact the shell at the other end, and the electromagnetic guide rod 1722 is an axial telescopic structure. On the premise of providing a guide pin without axial telescopic floating function, the plug and the socket are provided with a sufficient spacing through the blocking cooperation between the guide pin 16 and the front end face of the socket shell, which can prevent the electromagnetic guide rod 1722 from being damaged by a large axial force after reaching the maximum telescopic length.

[0084] The socket 2 of the present invention approaches the plug 1 under the electromagnetic attraction of the electromagnetic component 27 and the armature component 17, and realizes electromagnetic adsorption docking through the large-angle guidance of the guide pin 16 and the guide sleeve 26, and the large-angle guidance of the electromagnetic guide rod 1722 and the guide iron core 273. When the socket 2 moves to a certain extent, the telescopic locking component 12 and the locking ring 22 cooperate to lock, and at the same time trigger the locking feedback signal, so that the electromagnetic component 27 stops supplying power, and at the same time the driving mechanism of the telescopic locking component 12 starts working, driving the telescopic locking component 12 to move axially backward. At this time, the locking ring 22 locked with the telescopic locking component 12 drives the socket to move toward the plug, so that the plug and the socket are plugged in place, so that the male and female ends of the functional modules at both ends are docked. The plug and the socket also have a plug-in feedback function, and the feedback function sends a stop signal to the driving structure of the telescopic locking component 12.

[0085] In the embodiment of the present invention, the telescopic locking component 12 is a spiral telescopic locking structure, which includes a spiral transmission device 121 and a steel ball locking head 122, wherein the steel ball locking head 122 cooperates with the locking ring 22 to lock, and the spiral transmission device 121 drives the steel ball locking head 122 to move axially forward and backward. The driving mechanism is a motor that drives the spiral transmission device.

[0086] The spiral transmission device 121 includes a transmission nut 1211 rotatably arranged in the plug housing 1, a fixed sleeve 1212 is fixedly arranged in the transmission nut 1211, a screw rod 1213 is installed in the fixed sleeve 1212, and the screw rod 1213 is rotatably matched with the fixed sleeve 1212 to convert the rotational motion of the transmission nut 1211 into axial movement. The fixed sleeve 1212 is provided with a plurality of through holes equidistantly distributed along the axial direction and equipped with balls 1214, and the trajectory formed by the through holes is consistent with the spiral raceway of the screw rod 1213, so that when the fixed sleeve 1212 is assembled with the transmission nut 1211 and the screw rod 1213, the balls 1214 in the through holes of the fixed sleeve 1212 are respectively constrained by the cylindrical surface of the inner circumference of the transmission nut 1211 and the spiral raceway on the screw rod 1213. When the transmission nut 1211 drives the fixing sleeve 1212 to rotate together, the ball 1214 will rotate together with the fixing sleeve 12122, thereby driving the screw rod 1213 to generate axial movement.

[0087] The steel ball locking head 122 is fixed at the front end of the screw rod 1213, and the steel ball locking head 122 includes a locking shaft 1221, a first ball 1222, a second ball 1223, a limit sleeve 1224, a limit spring 1225 and a support sleeve 1226, wherein the locking shaft 1221 is fixedly arranged in the support sleeve 1226, and a clearance groove 12211 is provided on one side of the locking shaft 1221. 21 axially extends to the front end face of the locking shaft 1221, and a first locking hole 12261 for the first ball 1222 to pass through and a second locking hole 12262 for the second ball 1223 to pass through are distributed axially front to back on one side of the support sleeve 1226 corresponding to the yield groove 12211, and a first unlocking groove 12212 for partially accommodating the first ball 1222 is also provided at a position on the locking shaft 1221 corresponding to the first locking hole 12261. The limiting sleeve 1224 is slidably sleeved on the outer periphery of the supporting sleeve 1226, and the limiting spring 1225 provides the limiting sleeve 1224 with the power to slide forward axially, and the inner side of the limiting sleeve 1224 is also provided with an annular groove 12241 for avoiding the second ball 1223, and the second ball 1223 is located in the second locking hole 12262, and its upper end is limited by the bottom of the groove 1221, and the lower end is limited by the bottom of the annular groove 12241, at this time, the limiting sleeve 1224 is axially limited by the second ball 1223 to prevent it from escaping from the front end of the supporting sleeve 1226. The inner side wall of the front end of the limiting sleeve 1224 slides with the supporting sleeve 1226 with a small gap, so that the upper end of the first ball 1222 enters the first unlocking groove 12212.

[0088] The locking ring 22 includes a locking housing 221, in which a locking feedback component is installed. The locking feedback component can send a feedback signal of stopping to the electromagnetic component 27 when the locking shaft 1221 and the locking housing 221 are locked by the first ball 1222. In this embodiment, the locking housing 221 is locked by the locking groove 2211 at its front end and the steel ball locking head. Specifically, when the plug and the socket approach each other under the action of electromagnetic force, the support sleeve 1226 enters the cavity at the front end of the locking shell 221. At the same time, as the plug and the socket continue to approach each other, the front end face of the limit sleeve 1224 is blocked by the front end face of the locking shell 221. When the plug and the socket continue to approach each other, the support sleeve 1226 continues to extend into the locking shell, and the first ball 1222 disengages from the limit sleeve 1224 and enters the locking shell 221 with the support sleeve 1226. When it moves to a position corresponding to the locking groove 2211 in the locking shell 221, the bottom of the first ball 1222 falls into the locking groove 2211, and the top is still located in the give way groove 1211. At this time, the telescopic locking component is locked with the locking ring.

[0089] The locking feedback component includes an insulating support portion 222, a contact mounting hole inside the insulating support portion 222, a first inner conductor with a tail connection provided at the bottom of the contact mounting hole, a front end of the second inner conductor 223 is slidably disposed in the contact mounting hole, and an axial floating connection is also achieved between the second inner conductor 223 and the insulating support portion 222 through an elastic floating component. When the steel ball locking head is locked with the locking shell, the second inner conductor 223 is pushed by the support sleeve 1226 to compress the elastic floating component and retreat to achieve contact and conduction with the first inner conductor, thereby triggering a feedback signal.

[0090] In an embodiment of the present invention, the elastic floating component includes a floating spring 224, a floating support 225 and a connecting conductor 226, wherein the front end of the second inner conductor 223 is connected and fixed to the connecting conductor 226, wherein the floating support 225 is slidably matched with the inner wall of the locking shell, and the floating spring 224 is located between the insulating support part 222 and the connecting conductor 226, that is, the connecting conductor 226 is pressed on the floating support 225 under the action of the floating spring 224, so that when the support sleeve 1226 enters the locking shell 221, it pushes the floating support 225, and then pushes the connecting conductor 226 backward through the floating support 225, so that the connecting conductor 22 compresses the floating spring 224, driving the front end of the second floating inner conductor 223 to slide until it contacts and conducts with the first inner conductor.

[0091] The specific use process of the connector of the present invention is described as follows:

[0092] In a microgravity environment, when the satellite unit equipped with a connector moves to an adsorbable distance, the electromagnetic coil is energized to work, so that the electromagnetic adsorption structure generates an adsorption force to bring the satellite unit plug 1 and the socket 2 closer together; driven by the electromagnetic suction force, the connectors that are close to a certain degree begin to be plugged in, and firstly, the position and posture of the plug and the socket are corrected through the guidance correction of the guide pin 16 on the plug 1 and the tapered guide hole at the front end of the guide sleeve 26, and the guidance correction of the electromagnetic guide rod 1722 and the tapered guide hole at the front end of the electromagnetic core 273, so as to achieve rough guide positioning when the two are plugged in; then, when the plug and the socket continue to approach, precise positioning is achieved through the cooperation of the guide pin and the corresponding pin hole, and the cooperation of the electromagnetic guide rod and the corresponding guide pin hole; until the telescopic locking component arranged at the center of the connector is adapted and locked with the locking ring (at this time, the telescopic locking component is in an extended state, and can be adapted and locked before other components in the connector are plugged in, and the electromagnetic force mainly satisfies the locking force required by the locking component), a feedback signal is triggered, and the feedback signal controls the electromagnetic adsorption structure to stop working.

[0093] After the electromagnetic adsorption device stops working, the motor drives the spiral conveying device 121 of the telescopic locking component to move, and the spiral conveying device 121 drives the steel ball locking head 122 to move backward, providing a docking force for the connector plug and the socket multimedia transmission module, so that the connector plug and the socket are plugged into place. After the connector plug and the socket are plugged into place, an in-place signal is triggered, and the in-place signal controls the motor to stop working.

[0094] When separation is required, the motor drives the spiral conveying device 121 in reverse direction to achieve the separation of the connectors.

[0095] In other embodiments of the present invention, the housing of the connector plug and socket may also be formed by other structures, and is not limited to the ring shape of the present application. The connector plug and socket may also achieve rough guidance and posture adjustment only by electromagnetic adsorption devices, and the design of guide pins and guide sleeves may be cancelled, or the number of guide pins and guide sleeves may be increased as needed. The plug and socket of the present invention may also be locked by other mechanical structures, and the structure of the telescopic locking component is not limited to the combination of the spiral transmission device and the steel ball locking head in the embodiment of the present invention, and the locking structure adapted to the telescopic locking component is not limited to the locking ring in the embodiment of the present invention, and it is only necessary to provide plug-in power for each module of the plug and socket after locking.

[0096] In other embodiments of the present invention, the electromagnetic adsorption device stops working after the connector is plugged into place. At this time, the telescopic locking component and the matching locking structure may not trigger feedback when locking, or the triggered feedback is feedback that causes the power structure of the telescopic locking structure to start working.

[0097] See also Fig.15 and Fig.16 The present invention also provides an electromagnetic adsorption docking structure composed of the armature component 17 and the electromagnetic component 27, and an application scheme of the electromagnetic adsorption docking structure in a connector with a telescopic locking device in a microgravity environment. The armature component 17 and the electromagnetic component 27 are respectively located on the connector plug 1 and the socket 2, and the plug 1 and the socket 2 are locked by the telescopic locking device, and the telescopic locking device completes the locking before the plug 1 and the socket 2 are plugged in. The electromagnetic adsorption docking structure provides the telescopic locking device with power for automatic locking, and the telescopic locking device provides the plug and the socket with plugging power to complete the docking of their various components after locking. The plug 1 and the socket 2 can be the plug and the socket described in each embodiment of the present invention, or other structures.

[0098] When the plug housing and the socket housing of the present invention are used in a connector, one of the armature component 17 and the electromagnetic component 27 is located in the plug, and the other is located in the socket, and they can be selectively fixed according to the requirements.

[0099] The electromagnetic adsorption docking structure of the present invention is composed of an armature component and an electromagnetic component. Fig.16 The annular magnetic circuit shown is coaxial with the housing of the connector plug 1 or the socket 2, thereby ensuring the stable axial relative movement of the plug 1 and the socket 2 under the electromagnetic adsorption force. And the establishment of the annular magnetic circuit of the present invention can constrain the magnetic lines of force, increase the magnetic flux, and enhance the magnetic attraction of the docking structure. Specifically, the electromagnetic component and the armature component of the present invention both form a horseshoe structure and an electromagnetic circuit. The current passes through the coil to generate a magnetic field, which is enhanced in the soft magnetic magnetic circuit. The electromagnetic energy is concentrated in the iron core and is mainly used for parameter attraction, which can improve the efficiency of the electromagnet. Compared with a single linear solenoid that lacks a closed loop, after the present invention forms a closed annular loop, the leakage magnetic flux is reduced, and the utilization efficiency of the electromagnetic energy is better.

[0100] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electromagnetic adsorption docking structure for use in a microgravity environment, comprising an armature component and an electromagnetic component, characterized in that: The armature component includes a first annular magnetic circuit and two guide cores symmetrically distributed at the front end of the first annular magnetic circuit, the guide core includes an electromagnetic block and an electromagnetic guide rod; the electromagnetic component includes a second annular magnetic circuit and two electromagnetic coils with opposite polarities symmetrically distributed at the front end of the second annular magnetic circuit, and a guide core is fixed in each electromagnetic coil, the guide core has a guide pin hole, and the front end of the guide core extends out of the electromagnetic coil and forms a guide groove on the front end surface for guiding the electromagnetic guide rod to enter the guide pin hole.

2. The electromagnetic adsorption docking structure for microgravity environment according to claim 1, characterized in that: The electromagnetic guide rod is axially elastically floatingly arranged on the armature component to prevent the electromagnetic guide rod from being damaged when a large docking error occurs between the armature component and the electromagnetic component.

3. The electromagnetic adsorption docking structure for microgravity environment according to claim 2, characterized in that: A floating magnetic block is also provided at the front end of the electromagnetic block. The floating magnetic block is axially slidably arranged in the electromagnetic block through a second floating spring, and a conical surface at its front end that matches the guide groove extends out of the electromagnetic block; the electromagnetic guide rod realizes axial elastic floating cooperation with the electromagnetic block through the first floating spring, and the small diameter end at the front end of the electromagnetic guide rod passes through the floating magnetic block and extends out of the electromagnetic block.

4. The electromagnetic adsorption docking structure for microgravity environment according to claim 3, characterized in that: The outer periphery of the rear end of the electromagnetic guide rod protrudes outward to form a boss structure. The electromagnetic guide rod forms small-diameter ends before and after the boss structure, and the small-diameter end located at the rear side of the boss is located in the first floating spring.

5. The electromagnetic adsorption docking structure for microgravity environment according to claim 3, characterized in that: The first floating spring presses the bottom end surface of the electromagnetic block through the first magnetic cylinder. The first magnetic cylinder is also slidably sleeved with a second magnetic cylinder on the outer periphery of the front end. The second magnetic cylinder has a flange on the outer periphery of the front end. The second floating spring presses the flange on the floating magnetic block.

6. The electromagnetic adsorption docking structure for microgravity environment according to claim 5, characterized in that: The outer periphery of the floating magnetic block is guided and matched with the inner wall of the electromagnetic block, and the second magnetic cylinder is limited by radially matching with the floating magnetic block through the outer periphery turning edge of the front end thereof.

7. The electromagnetic adsorption docking structure for microgravity environment according to claim 3, characterized in that: The front end of the electromagnetic block is also provided with a stop surface for preventing the floating magnetic block from escaping.

8. The electromagnetic adsorption docking structure for microgravity environment according to claim 1, characterized in that: The guide groove is in a tapered shape with a radial dimension that gradually shrinks from front to back, so as to meet the requirements of docking guidance at a larger angle.

9. The electromagnetic adsorption docking structure for microgravity environment according to any one of claims 1 to 8, characterized in that: The first annular magnetic circuit, the second annular magnetic circuit, the guide iron core and the electromagnetic iron core are all made of soft magnetic materials.

10. An application of an electromagnetic adsorption docking structure for a microgravity environment, characterized in that: The electromagnetic adsorption docking structure is used to realize the automatic approach of the connector plug and the socket and the locking of the telescopic locking device in the connector before other components are plugged in.

11. The application of the electromagnetic adsorption docking structure for microgravity environment according to claim 10, characterized in that: The electromagnetic adsorption docking structure stops working after the locking device is locked.

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