Electromagnetic induction coupling type wireless charging seat with variable coil range

Abstract

The utility model provides an electromagnetic induction coupling type wireless charging seat with a variable coil range, which belongs to the technical field of robot charging and comprises a positioning seat, a butt joint table is arranged above the positioning seat, a telescopic component used for being close to a robot is arranged between the positioning seat and the butt joint table, and a transmitting end coil is arranged at the bottom of the butt joint table. The four evenly-distributed current probes are located at the bottom of the robot, the current probe located between the transmitting end coil and the receiving end coil judges the distance between the robot and the butt joint table according to the current intensity, so that the receiving end coil of the robot is accurately positioned, and after the robot is aligned to the position, the robot is located according to the contact face of the robot. Through the expansion driving component, the retracting and stretching frame expands outwards in the circumferential direction according to the direction of the orientation assembly, the area of the transmitting end coil is increased, and therefore it is guaranteed that the charging process is conducted stably.

Description

Technical Field

[0001] The utility model relates to the technical field of robot charging, in particular to an electromagnetic induction coupling type wireless charging seat with a variable coil range. Background Art

[0002] The elderly population, especially those living in old communities and other residential areas without elevators, face problems such as difficulty climbing stairs and carrying supplies.

[0003] The stair climbing robot can achieve fully automatic stair climbing without human intervention, and can help the elderly living in old residential areas without elevators to carry goods and daily necessities. When takeout and express delivery arrive downstairs, the robot can also autonomously deliver them upstairs to the designated location.

[0004] After searching, we found the following problems in the relevant technology: since there are many elderly people in old residential areas, the workload of stair-climbing robots is heavy, and the existing stair-climbing robots have a short battery life and need manual charging, which makes them not very practical. For this reason, we designed an electromagnetic induction coupling wireless charging stand with a variable coil range.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background technology section of this application, and therefore may include prior art information that does not constitute known to ordinary technicians in the field. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology. In order to solve the problem of charging position deviation between the robot and the charging seat in the above-mentioned prior art, the utility model provides an electromagnetic induction coupling wireless charging seat with a variable coil range, which uses a wireless charging coil combined with a cutting magnetic flux line current induction component to achieve the effect of accurate fitting between the robot and the charging seat. The specific technical solution is:

[0007] An electromagnetic induction coupling wireless charging stand with a variable coil range, comprising a receiving end coil and a positioning stand arranged at the bottom of the inner wall of a robot, a docking platform arranged above the positioning stand, and a telescopic member for approaching the robot arranged between the positioning stand and the docking stand, and a coil cover for accommodating the transmitting end coil arranged at the bottom of the docking stand;

[0008] The inner cavity of the coil cover is embedded with a tray, the transmitting end coil is wound on a circumferentially arranged retracting frame, the retracting frame is arranged on the tray by circumferential sliding of a directional assembly, and the inner cavity of the coil cover is provided with an expansion driving component for driving the retracting frame to retract and expand circumferentially;

[0009] The expansion drive component includes a driving gear rotatably arranged in the inner cavity of the coil cover, a linkage shaft is uniformly rotated at the bottom of the tray, a transmission gear meshing with the driving gear is sleeved on the lower part of the outer wall of the linkage shaft, an expansion gear is sleeved on the upper part of the outer wall of the linkage shaft, and a rack meshing with the expansion gear is arranged on the side wall of the collection frame;

[0010] The electromagnetic induction coupling type wireless charging seat also includes a current probe embedded in the bottom of the robot, and the current probe is electrically connected to the walking module of the robot.

[0011] In the above technical solution, the telescopic member includes an electric telescopic member, which is embedded and installed on the top of the positioning seat, and the movable end of the electric telescopic member is fixed to the bottom of the docking platform.

[0012] The outer part of the transmitting end coil is covered with a coil cover fixed to the bottom of the docking platform, and the coil cover is connected to the docking platform through a detachable component.

[0013] The detachable component comprises a hanging slot provided at the bottom of the docking station, and a hanging block corresponding to the hanging slot is arranged at the bottom of the inner wall of the coil cover.

[0014] The orienting component includes a circumferentially opened orienting guide groove on the pallet, the collecting frame is slidably arranged in the inner cavity of the directional guide groove, the side wall of the collecting frame is provided with a limiting slide plate that fits the surface of the pallet, the bottom of the limiting slide plate located at the top of the pallet is provided with an anti-deviation slider, and the top of the pallet is evenly circumferentially provided with sliding grooves that are adapted to the anti-deviation slider.

[0015] A protruding block for clamping the transmitting end coil is arranged at the center of the bottom of the inner wall of the coil cover.

[0016] A wire storage groove is provided at the bottom of the positioning seat.

[0017] The positioning seat, the docking platform and the coil cover are all made of PLA material by 3D printing.

[0018] A positioning component for locking the charging position of the robot is embedded in the top of the docking station;

[0019] The positioning component comprises a socket provided at the bottom of the robot, a plug core is embedded at the top of the docking platform, and the plug core is connected to the docking platform through a telescopic member.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the electromagnetic induction coupling type wireless charging stand with variable coil range:

[0021] When the robot has no transportation task, it combines the robot's internal binocular vision and radar navigation to the vicinity of the positioning seat. When the robot passes over it, the receiving coil inside the robot cuts the magnetic flux lines of the transmitting coil, thereby generating current. At this time, the current probe located between the transmitting coil and the receiving coil determines the distance between the robot and the docking station according to the strength of the current, and sends a signal to the command module of the walking mechanism inside the robot through the current probe, thereby accurately positioning the receiving coil of the robot, and then the receiving coil of the robot can fit tightly on the transmitting coil at the bottom of the docking station. The robot automatically ensures that the transmitting coil and the receiving coil are consistent based on the monitoring results of the current probe, thereby ensuring the charging efficiency of the robot.

[0022] After the robot is aligned to the position, the receiving frame is expanded outward in the circumferential direction of the directional component by expanding the driving component according to the robot contact surface, thereby increasing the area of ​​the transmitting end coil and ensuring the stability of the charging process.

[0023] During the operation of folding and expanding the transmitting end coil, the anti-bias slider and the sliding groove cooperate with each other to improve the stability of the folding and expanding process of the transmitting end coil, prevent the transmitting end coil from being disordered, and thus ensure the neatness of the folding and expanding process of the coil.

[0024] Fourth, the position of the docking station is adjusted by the electric telescopic parts, so that the docking station drives the transmitting end coil close to the robot, thereby ensuring the fit of the robot when charging.

[0025] 5. A convex block is installed at the inner center of the coil cover. The transmitting end coil is inserted in a specified direction and then rotated to hang on the convex block. The transmitting end coil is protected by the coil cover which is easy to disassemble.

[0026] 6. The coil cover is clamped in the mounting slot through a mounting block fixed at the center corresponding to the mounting slot, and then the coil cover is rotated 90 degrees and clamped, and then fixed with bolts, so that the coil cover is easy to disassemble, thereby bringing convenience to the maintenance process of relevant personnel.

[0027] 7. After the power supply wire passes through the wiring hole, it supplies power to the internal transmitting end coil, which facilitates the wiring operation of the wire. A groove for storing the wire is opened at the bottom of the positioning seat, and a wiring groove is opened in communication with the groove, making wiring more convenient.

[0028] 8. When the transmitting coil and the receiving coil are aligned through the monitoring of the current probe, the movable end of the electric telescopic rod drives the plug to move and snap into the inside of the socket, thereby locking the position of the robot and ensuring the stability of the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic diagram of the structure of an electromagnetic induction coupling wireless charging stand with a variable coil range of the utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of an electromagnetic induction coupling wireless charging stand with a variable coil range of the utility model. Figure 2 ;

[0031] Figure 3 This is a structural cross-sectional view of an electromagnetic induction coupling type wireless charging stand with a variable coil range according to the utility model;

[0032] Figure 4 An exploded schematic diagram of the structure of an electromagnetic induction coupling type wireless charging stand with a variable coil range according to the utility model;

[0033] Figure 5 This is a schematic diagram of the partial structure of the robot of the utility model;

[0034] Figure 6 This is a partial structural sectional view of the robot of the utility model;

[0035] Figure 7 It is a structural schematic diagram of the installation position of the positioning seat of the utility model;

[0036] Figure 8 The schematic diagram of the tray and the transmitting coil structure of the utility model Figure 1 ;

[0037] Fig. 9 The schematic diagram of the tray and the transmitting coil structure of the utility model Figure 2 ;

[0038] Fig.10 It is a partial structural schematic diagram of the docking station of the utility model;

[0039] Fig.11 This is a partial structural diagram of Embodiment 2 of the present utility model;

[0040] in, Figures 1 to 11The correspondence between the reference numerals and the component names is as follows: 1-positioning seat, 2-docking station, 3-electric telescopic member, 4-transmitter coil, 5-receiving coil, 6-warning light, 7-coil cover, 8-hanging slot, 9-rotating shaft, 10-wiring slot, 11-groove, 12-wire storage slot, 13-robot, 14-current probe, 15-jack, 16-outer cover, 17-insert core, 18-tray, 19-folding rack, 20-motor, 21-machine cover, 22-lead ring, 23-limiting slide plate, 24-anti-bias slide block, 25-directional guide groove, 26-slide groove, 27-transmission gear, 28-drive gear, 29-linkage shaft, 30-expansion gear, 31-rack, 32-tension spring, 33-guide rod, 34-active cavity, 35-guide seat. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] The following is a combination of specific implementation cases and attached Figure 1-11 The present invention is further described below, but the present invention is not limited to these embodiments. Example

[0043] An electromagnetic induction coupling wireless charging seat with a variable coil range includes a receiving end coil 5 and a positioning seat 1 arranged at the bottom of the inner wall of a robot 13, a docking platform 2 is arranged above the positioning seat 1, and a telescopic member for approaching the robot 13 is arranged between the positioning seat 1 and the docking platform 2, and a coil cover 7 for accommodating the transmitting end coil 4 is arranged at the bottom of the docking platform 2.

[0044] As attached Figure 7 As shown: the positioning seat 1 is fixed at the bottom of the residential building in the old community. The docking platform 2 is installed above the positioning seat 1 through four symmetrically distributed telescopic components, so that the docking platform 2 and the positioning seat 1 form a tower structure, and the docking platform 2 is used to connect with the receiving end coil 5 at the bottom of the robot 13. That is, the robot 13 moves the receiving end coil 5 to a position where it connects with the transmitting end coil 4 by walking the components of the moving part.

[0045] The inner cavity of the coil cover 7 is embedded with a tray 18, and the transmitting end coil 4 is wound on a circumferentially arranged retracting frame 19, which is arranged on the tray 18 by the circumferential sliding of the directional assembly, and the inner cavity of the coil cover 7 is provided with an expansion driving component for driving the retracting frame 19 to retract and expand circumferentially, and the bottom of the inner wall of the robot 13 is provided with a receiving end coil 5 corresponding to the transmitting end coil 4. The bottom of the tray 18 is circumferentially fixed to the bottom of the inner cavity of the coil cover 7 by pillars. Six retracting frames 19 are arranged circumferentially below the transmitting end coil 4 with the center of the tray 18 as the center, and the transmitting end coil 4 is hovering on the top of the retracting frame 19, that is, the transmitting end coil 4 passes through the lead ring 22 on the top of the retracting frame 19 in sequence, so that the transmitting end coil 4 can be retracted and expanded circumferentially.

[0046] When charging the robot 13, after aligning the robot 13 to the position, the receiving frame 19 is expanded outward in the circumferential direction of the directional component by expanding the driving component according to the contact surface of the robot 13, thereby increasing the area of ​​the transmitting end coil 4, thereby ensuring the stability of the charging process.

[0047] The electromagnetic induction coupling wireless charging seat also includes a current probe 14 embedded in the bottom of the robot 13, and the current probe 14 is electrically connected to the walking module of the robot 13. The transmitting end coil 4 is electrically connected to the external power supply through a wire on the positioning seat 1. The receiving end coil 5 is electrically connected to the battery inside the robot 13 through a wire, that is, the battery inside the robot 13 is wirelessly charged through the induction of the transmitting end coil 4 and the receiving end coil 5.

[0048] The transmitting coil 4 is installed on the lower surface of the docking platform 2 so that the receiving coil 5 on the robot 13 moves onto the docking platform 2 along with the robot 13. The robot 13 is charged by induction between the transmitting coil 4 and the receiving coil 5.

[0049] The current probe 14 is a magnetic ring designed according to the Faraday principle to measure the interference current signal in the conductor. It is essentially a transformer with 1 turn. The current probe can be used to measure the current flowing through the conductor. The current probe is divided into AC / DC current probe and AC current probe. The former can measure the magnitude of direct current and alternating current, while the latter can only measure the magnitude of alternating current. The current flowing through the conductor will cause an electromagnetic flux field to be formed around the conductor. The current probe is designed to sense the field strength of this magnetic flux field and convert it into a corresponding voltage for measurement using an oscilloscope.

[0050] Four evenly distributed current probes 14 are located at the bottom of the robot 13 , so that the current probes 14 sense the current between the transmitting end coil 4 and the receiving end coil 5 . The current probes 14 are electrically connected to the command module of the walking mechanism inside the robot 13 .

[0051] When the robot 13 has no transport task, it combines the binocular vision inside the robot 13 with radar navigation to the vicinity of the positioning seat 1. Since the wireless charging seat generates a magnetic field when it is powered on, when the robot 13 passes over it, the receiving end coil 5 inside the robot 13 cuts the magnetic flux lines of the transmitting end coil 4, thereby generating current.

[0052] The current probe 14 located between the transmitting end coil 4 and the receiving end coil 5 determines the distance between the robot 13 and the docking station 2 according to the current strength, and sends a signal to the command module of the walking mechanism inside the robot 13 through the current probe 14, so as to accurately position the receiving end coil 5 of the robot 13, and then the receiving end coil 5 of the robot 13 can be closely attached to the transmitting end coil 4 at the bottom of the docking station 2. The robot 13 automatically ensures that the transmitting end coil 4 and the receiving end coil 5 are consistent with each other according to the monitoring results of the current probe 14, thereby ensuring the charging efficiency of the robot 13.

[0053] The telescopic member includes an electric telescopic member 3, which is embedded and installed on the top of the positioning seat 1, and the movable end of the electric telescopic member 3 is fixed to the bottom of the docking station 2. The electric telescopic member 3 can be an electric push rod, and the electric telescopic member 3 is electrically connected to the external power supply through a wire. The bottom of the positioning seat 1 made of 3D printing of PLA material is embedded with fixed sheet metal, and four pairs of sheet metals are arranged in a circular array with the center of the circular positioning seat 1 as the center of the circle through bolts. The electric telescopic member 3 is fixedly installed in the middle of each pair of sheet metals, and then the pin is passed through the sheet metal to axially limit the electric telescopic member 3 to prevent it from falling.

[0054] At the same time, since the electric telescopic member 3 is embedded in the positioning seat 1, the circular positioning seat 1 radially limits the electric telescopic member 3 to prevent it from moving left and right. The movable end of the electric telescopic member 3 is connected to the fixing member made of 3D printing of PLA material and is hinged with a pin. There are four bolt holes on the fixing member, which is fixed to the upper aluminum plate. The position of the docking station 2 is adjusted by the electric telescopic member 3, so that the docking station 2 drives the transmitting end coil 4 close to the robot 13, thereby ensuring the fit of the robot 13 when charging.

[0055] It is worth noting that a warning light 6 is embedded in the circumferential direction of the outer wall of the positioning seat 1. A circumferential embedding groove is provided on the outer wall of the positioning seat 1. The warning light 6 can be a light strip, so that the warning light 6 is fixedly embedded in the circumferential embedding groove. The warning light 6 is electrically connected to an external power source through a wire. The warning light 6 is used to remind passers-by.

[0056] In addition, the outer sleeve of the transmitting coil 4 is provided with a coil cover 7 fixed to the bottom of the docking station 2, and the coil cover 7 is connected to the docking station 2 through a detachable component. Eight bolt holes are opened in the center of the aluminum plate on the movable end of the electric telescopic member 3, and the coil cover 7 made of 3D printing of PLA material is fixed to the aluminum plate by eight bolts, and the coil cover 7 covers the outside of the transmitting coil 4. A bump is installed in the center of the coil cover 7, and the transmitting coil 4 can be inserted in the specified orientation and rotated 90 degrees to hang on the bump. The transmitting coil 4 is protected by the coil cover 7 which is easy to disassemble.

[0057] The expansion drive component includes a driving gear 28 rotatably arranged in the inner cavity of the coil cover 7, a linkage shaft 29 is uniformly rotated at the bottom of the tray 18, a transmission gear 27 meshing with the driving gear 28 is sleeved on the lower part of the outer wall of the linkage shaft 29, an expansion gear 30 is sleeved on the upper part of the outer wall of the linkage shaft 29, and a rack 31 meshing with the expansion gear 30 is arranged on the side wall of the collecting frame 19.

[0058] The bearing is embedded and installed at the bottom of the inner wall of the tray 18, the lower end of the rotating shaft 9 is embedded and installed inside the bearing, and the driving gear 28 is fixedly sleeved on the outside of the rotating shaft 9 through the mounting hole opened in the center. The motor 20 is fixed at the bottom of the tray 18 through the machine cover 21, and the output shaft of the motor 20 passes through the bottom of the coil cover 7 and extends to the inner cavity and is fixedly connected to the lower end of the rotating shaft 9, so that the motor 20 drives the rotating shaft 9 to rotate. The motor 20 is electrically connected to the battery inside the charging seat through a wire.

[0059] The bearings are embedded and installed in the bottom circumference of the tray 18, and the top of the linkage shaft 29 is embedded and installed inside the bearings. The expansion gear 30 and the transmission gear 27 are fixedly sleeved on the outside of the linkage shaft 29 through the installation hole opened in the center. The expansion gear 30 and the transmission gear 27 rotate with the linkage shaft 29 at the same time. The six transmission gears 27 in the circumference are meshed with the driving gear 28 in the center of the tray 18 at the same time. When adjusting the area of ​​the transmitting end coil 4, the output shaft of the motor 20 drives the driving gear 28 to rotate, so that the six transmission gears 27 meshing with the driving gear 28 simultaneously drive the linkage shaft 29 to rotate, so that the linkage shaft 29 drives the expansion gear 30 to rotate, so that the rack 31 meshing with the expansion gear 30 drives the collection frame 19 to move, so that the six collection frames 19 spread outward in the circumference, thereby increasing the area of ​​the transmitting end coil 4 and ensuring the area of ​​wireless charging.

[0060] In addition, the detachable component includes a mounting groove 8 provided at the bottom of the docking station 2, and a mounting block corresponding to the mounting groove 8 is provided at the bottom of the inner wall of the coil cover 7. The circular mounting groove 8 has two interconnected square slots on both sides, and the coil cover 7 is clamped in the mounting groove 8 through a mounting block corresponding to the mounting groove 8 fixed at the center. Then the coil cover 7 is rotated 90 degrees and clamped, and then fixed by bolts, so that the coil cover 7 is easy to disassemble, thereby bringing convenience to the maintenance process of relevant personnel.

[0061] Furthermore, a wiring hole is provided at the bottom of the coil cover 7. After the power supply line passes through the wiring hole, the internal transmitting end coil 4 is powered, so that the wiring operation of the wire is convenient. A groove 11 for accommodating the wire is provided at the bottom of the positioning seat 1, and a wiring groove 10 is provided in communication with the groove 11, so that the wiring is more convenient.

[0062] A protruding block for clamping the transmitting end coil 4 is arranged at the center of the bottom of the inner wall of the coil cover 7. The transmitting end coil 4 is clamped inside the coil cover 7 by the protruding block, thereby ensuring the stability of the coil cover 7 protection process.

[0063] The bottom of the positioning seat 1 is provided with a wire storage groove 12. The wire storage groove 12 at the bottom of the positioning seat 1 stores the redundant wires to prevent the redundant wires from being placed outside, thereby protecting the redundant wires.

[0064] The positioning seat 1, the docking platform 2 and the coil cover 7 are all made of PLA material 3D printing, which makes the workpiece production more convenient.

[0065] The orienting component includes a circumferentially opened directional guide groove 25 on the tray 18, and the collecting frame 19 is slidably set in the inner cavity of the directional guide groove 25. The side wall of the collecting frame 19 is provided with a limiting slide plate 23 that fits the surface of the tray 18. The bottom of the limiting slide plate 23 located at the top of the tray 18 is provided with an anti-deviation slider 24. The top of the tray 18 is evenly circumferentially opened with sliding grooves 26 that are compatible with the anti-deviation slider 24.

[0066] A rack 31 is fixedly installed on one side of the bottom of the collecting frame 19, and a limiting slide 23 is fixedly installed on the bottom and top of the collecting frame 19 on the other side away from the rack 31, and the three limiting slides 23 and the rack 31 are all fitted on the surface of the tray 18 to slide. A slide groove 26 is provided on the top of the tray 18, and an anti-deflection slider 24 is fixedly installed vertically on the edge of the limiting slide 23 on the top of the tray 18, so that the anti-deflection slider 24 is fitted inside the slide groove 26 and slides. Through the sliding cooperation between the anti-deflection slider 24 and the slide groove 26, the stability of the collecting process of the transmitting end coil 4 is improved.

[0067] A positioning component for locking the charging position of the robot 13 is embedded in the top of the docking station 2;

[0068] The positioning assembly includes a socket 15 provided at the bottom of the robot 13, and a plug 17 is embedded at the top of the docking station 2, and the plug 17 is connected to the docking station 2 through a telescopic member. The telescopic member is electrically connected to the full charge reminder module and the current probe 14 respectively. The telescopic member can be an electric telescopic rod, and an outer cover 16 is fixedly embedded and installed at the top of the docking station 2 and close to the edge, and the top of the outer cover 16 is in the same plane as the top of the docking station 2. The telescopic member is fixedly embedded and installed inside the outer cover 16, and the movable end of the telescopic member is fixedly connected to the plug 17.

[0069] Four sockets 15 are provided at the bottom of the robot 13 corresponding to the plug core 17. When the transmitting end coil 4 is aligned with the receiving end coil 5 through the monitoring of the current probe 14, the movable end of the electric telescopic rod drives the plug core 17 to move and snap into the inside of the socket 15, thereby locking the position of the robot 13, thereby ensuring the stability of the charging process.

[0070] This embodiment is an electromagnetic induction coupling type wireless charging seat with a variable coil range. The working principle is as follows: when the robot 13 has no transportation task, it combines the binocular vision and radar navigation inside the robot 13 to the vicinity of the positioning seat 1. When the robot 13 passes over it, the receiving end coil 5 inside the robot 13 cuts the magnetic flux lines of the transmitting end coil 4. At this time, the current probe 14 located between the transmitting end coil 4 and the receiving end coil 5 determines the distance between the robot 13 and the docking station 2 according to the current strength, and sends a signal to the command module of the walking mechanism inside the robot 13 through the current probe 14, so as to accurately locate the receiving end coil 5 of the robot 13.

[0071] Then, the output shaft of the motor 20 drives the driving gear 28 to rotate, so that the six transmission gears 27 meshing with the driving gear 28 simultaneously drive the linkage shaft 29 to rotate, so that the linkage shaft 29 drives the expansion gear 30 to rotate, so that the rack 31 meshing with the expansion gear 30 drives the collecting frame 19 to move, so that the six collecting frames 19 spread outward in the circumferential direction, thereby increasing the area of ​​the transmitting end coil 4.

[0072] Then the receiving coil 5 of the robot 13 can fit on the transmitting coil 4 at the bottom of the docking station 2. When the transmitting coil 4 and the receiving coil 5 are aligned through the monitoring of the current probe 14, the movable end of the electric telescopic rod drives the plug 17 to move and snap into the inside of the socket 15, thereby locking the position of the robot 13.

[0073] After charging is completed, after the electric telescopic rod receives the signal, the movable end of the electric telescopic rod drives the plug core 17 to move and be taken out from the inside of the socket 15, and the robot 13 with sufficient power continues to transport supplies to the residents. Example

[0074] As attached Fig.11 As shown: the top of the receiving member 19 is provided with an active cavity 34, the inner cavity of the active cavity 34 is fixedly embedded with the guide rod 33, and a plurality of guide seats 35 are movably sleeved on the outside of the guide rod 33 in sequence and uniformly, so that the guide seats 35 slide against the outer wall of the guide rod 33, and the top of the outer wall of each guide seat 35 is fixedly installed with a lead ring 22, and two adjacent guide seats 35 are fixedly connected by a tension spring 32, and the tension spring 2 is sleeved on the outer wall of the guide rod 33. In the process of retracting and expanding the transmitting end coil 4, the elastic deformation of the tension spring 32 is used for limiting, so that the distance between the transmitting end coils 4 is enlarged, the area of ​​the wireless transmitting end is increased, and the charging efficiency is improved.

[0075] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0076] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0077] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0078] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic induction coupling type wireless charging stand with a variable coil range, comprising a receiving end coil (5) and a positioning stand (1) arranged at the bottom of the inner wall of a robot (13), characterized in that: A docking platform (2) is arranged above the positioning seat (1), and a telescopic member for approaching the robot (13) is arranged between the positioning seat (1) and the docking platform (2), and a coil cover (7) for accommodating the transmitting end coil (4) is arranged at the bottom of the docking platform (2); A tray (18) is embedded in the inner cavity of the coil cover (7), the transmitting end coil (4) is wound on a circumferentially arranged retracting frame (19), the retracting frame (19) is arranged on the tray (18) by the circumferential sliding of a directional assembly, and an expansion driving component for driving the retracting frame (19) to retract and expand circumferentially is arranged in the inner cavity of the coil cover (7); The expansion drive component comprises a driving gear (28) rotatably arranged in the inner cavity of the coil cover (7); a linkage shaft (29) is rotatably arranged at the bottom of the tray (18) in a circumferentially uniform manner; a transmission gear (27) meshing with the driving gear (28) is sleeved on the lower part of the outer wall of the linkage shaft (29); an expansion gear (30) is sleeved on the upper part of the outer wall of the linkage shaft (29); and a rack (31) meshing with the expansion gear (30) is arranged on the side wall of the collecting frame (19); The electromagnetic induction coupling type wireless charging seat further comprises a current probe (14) embedded in the bottom of the robot (13), and the current probe (14) is electrically connected to a walking module of the robot (13).

2. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 1, characterized in that: The telescopic component comprises an electric telescopic component (3), the electric telescopic component (3) being embedded and mounted on the top of the positioning seat (1), and the movable end of the electric telescopic component (3) being fixedly connected to the bottom of the docking platform (2).

3. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 1, characterized in that: The transmitting end coil (4) is externally sleeved with a coil cover (7) fixedly connected to the bottom of the docking platform (2), and the coil cover (7) is connected to the docking platform (2) via a detachable component.

4. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 3, characterized in that: The detachable component comprises a hanging groove (8) provided at the bottom of the docking platform (2), and a hanging block corresponding to the hanging groove (8) is provided at the bottom of the inner wall of the coil cover (7).

5. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 1, characterized in that: The orientation component comprises an orientation guide groove (25) circumferentially opened on the tray (18); the sheet collecting frame (19) is slidably arranged in the inner cavity of the orientation guide groove (25); a limiting slide plate (23) is arranged on the side wall of the sheet collecting frame (19) and is in contact with the surface of the tray (18); an anti-deviation slide block (24) is arranged at the bottom of the limiting slide plate (23) located at the top of the tray (18); and slide grooves (26) adapted to the anti-deviation slide block (24) are uniformly opened circumferentially on the top of the tray (18).

6. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 1, characterized in that: A protruding block for clamping the transmitting end coil (4) is provided at the center of the bottom of the inner wall of the coil cover (7).

7. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 1, characterized in that: The bottom of the positioning seat (1) is provided with a wire storage groove (12).

8. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 1, characterized in that: The positioning seat (1), the docking platform (2) and the coil cover (7) are all made of PLA material through 3D printing.

9. The electromagnetic induction coupling type wireless charging stand with variable coil range according to claim 1, characterized in that: A positioning component for locking the charging position of the robot (13) is embedded in the top of the docking station (2); The positioning component comprises a socket (15) provided at the bottom of the robot (13); a core (17) is embedded at the top of the docking platform (2); and the core (17) is connected to the docking platform (2) via a telescopic member.

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