A power protection device of a rotatable robot magnetic suction charging chassis

Abstract

The utility model discloses a rotatable robot magnetic attraction charging chassis's power protection device, including power module, circuit board, magnetic attraction carousel, circuit board fixed setting in the top surface of power module, and magnetic attraction carousel is set up on the circuit board and is connected with power module, and the magnetic attraction carousel is provided with magnetic attraction contact point, and magnetic attraction contact point is connected with circuit board electricity, power module includes shell, main gear shaft, clutch gear, and main gear shaft rotation setting is in the center place of shell, and the middle part of magnetic attraction carousel is fixedly connected with main gear shaft, and the clutch disc tooth of transmission connection is rotationally arranged in the shell with gear group, and the inner wall of clutch disc tooth is provided with a plurality of concave positions along the circumference, and the clutch gear is rotationally arranged on the clutch disc tooth and is transmission connection with main gear shaft, and the lower part of clutch gear is provided with a plurality of elastic convex points matched with concave position along the circumference, and the magnetic attraction carousel is rotated through the drive arrangement linkage main gear shaft. The utility model gives consideration to power output and overload protection, and the stability of overall structure is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of desktop robots, and in particular to a power protection device for a rotatable robot magnetic charging chassis. Background Technology

[0002] In modern office and home environments, desktop robots have gained widespread attention due to their compact size and diverse functions, such as information interaction, item handling, and environmental monitoring. However, desktop robots face a common problem during use: the convenience and stability of charging. Traditional charging methods often involve plugging and unplugging the robot's charging interface. However, repeated plugging and unplugging can easily cause wear and tear on the interface, affecting charging efficiency and device lifespan. This is especially true for robots that need to move flexibly and perform multi-pose operations on a desktop; a fixed charging interface with a fixed position and orientation greatly limits their range of motion and ease of use. Furthermore, while some robots use rotatable magnetic charging chassis, which allows for convenient charging, the chassis remains locked during charging. Forcibly twisting the robot can damage the gear set or drive mechanism. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide a power protection device for a rotatable robot magnetic charging chassis, which takes into account both power output and overload protection, effectively improves the flexibility and safety of desktop robots in the charging state, and ensures the stability of the overall structure.

[0004] To achieve the above objectives, this utility model discloses a power protection device for a rotatable robot magnetic charging chassis, including a power module, a circuit board, and a magnetic turntable. The circuit board is fixedly disposed on the top surface of the power module, and the magnetic turntable is rotated on the circuit board and fixedly connected to the output shaft of the power module. The magnetic turntable is provided with magnetic contacts, which are electrically connected to the circuit board for magnetic charging of the robot.

[0005] The power module includes a housing, a main gear shaft, and a clutch gear. The main gear shaft is rotatably located at the center of the housing. The middle part of the magnetic turntable is fixedly connected to the main gear shaft. The housing contains clutch disc teeth. The clutch gear is screwed onto the clutch disc teeth and is connected to the main gear shaft for transmission. The inner wall of the clutch disc teeth has several recesses along the circumference. The lower part of the clutch gear has several elastic protrusions along the circumference that mesh with the recesses. A drive device drives the clutch gear to rotate in conjunction with the main gear shaft, thereby driving the magnetic turntable to rotate. When the drive device is in the locked state, the elastic protrusions of the clutch gear slide relative to the recesses of the clutch disc teeth under external force.

[0006] Furthermore, the top surface of the outer shell is provided with a plurality of protruding pillars at equal intervals along the circumference, the top surface of the protruding pillars has an arc-shaped groove, and the arc-shaped groove is embedded with a freely rotatable ball, and the bottom surface of the magnetic turntable has an annular track that matches the ball.

[0007] Furthermore, a shaft is provided at the center of the bottom surface of the magnetic turntable, and a hole is provided inside the main gear shaft, into which the shaft is inserted.

[0008] Furthermore, the inner wall of the insertion hole is provided with a plurality of insertion teeth along the circumferential direction, and the lower part of the insertion shaft is provided with a plurality of slots that match the insertion teeth along the circumferential direction.

[0009] Furthermore, a clutch wheel is provided at the lower part of the clutch gear, the elastic protrusions are equidistantly arranged on the peripheral wall of the clutch wheel, and an arc-shaped groove is formed on the clutch wheel corresponding to the elastic protrusions.

[0010] Furthermore, the magnetic turntable is provided with a PCBA adapter board, and the magnetic contact includes a first spring probe, which is disposed on the PCBA adapter board and extends through the magnetic turntable for contacting the robot's charging interface. A second spring probe is disposed at the bottom of the PCBA adapter board, and a conductive sheet is disposed on the surface of the circuit board. The second spring probe slides in contact with the conductive sheet.

[0011] Furthermore, the magnetic turntable is provided with at least one magnetic component for magnetically connecting the bottom of the robot to the magnetic turntable.

[0012] Furthermore, a gear set is rotatably disposed inside the housing, and the gear set is respectively connected to the drive device and the clutch disc gear transmission.

[0013] Furthermore, a positioning gear is rotatably installed inside the housing, and the positioning gear meshes with the main gear shaft and the clutch gear respectively. An angle detection module is provided on the top surface of the housing, and the shaft of the positioning gear is connected to the angle detection module. The angle detection module is used to detect the rotation angle of the magnetic turntable.

[0014] Furthermore, one side of the outer shell is recessed inward and has a clearance groove, which is V-shaped.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The power module of this utility model adopts a clutch design, which enables the drive device to provide power output to the magnetic turntable when locked. In the locked state, it can also prevent damage to the gear set or drive device caused by the robot being twisted, effectively improving the flexibility and safety of the desktop robot when charging. (2) The second spring probe of the magnetic turntable and the conductive sheet of the circuit board adopt a sliding contact design, which ensures that no matter where the magnetic turntable is stopped, the power can be supplied to the successfully docked robot through the path formed by the conductive sheet, the second spring probe, the PCBA adapter board and the first spring probe. (3) Multiple freely rotating balls are provided on the outer shell to support and guide the magnetic turntable, reduce the frictional resistance generated by the magnetic turntable during rotation, and ensure that the magnetic turntable is evenly stressed, making the rotation smoother and more stable, and avoiding the phenomenon of deflection or jamming due to excessive local stress. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the overall structure of this utility model;

[0019] Figure 3 This is an exploded view of the overall structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the magnetic turntable;

[0021] Figure 5 This is a schematic diagram of the circuit board structure;

[0022] Figure 6 This is a half-sectional view of the overall structure of this utility model (I).

[0023] Figure 7 This is a half-sectional view of the overall structure of this utility model (II).

[0024] Figure 8 This is a schematic diagram of the power unit structure;

[0025] Figure 9 A schematic diagram of the overall structure of the main gear shaft;

[0026] Figure 10 This is a schematic diagram of the overall structure of the clutch gear. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings.

[0028] Reference Figures 1-3As shown, a power protection device for a rotatable robot magnetic charging chassis includes a power module 1, a circuit board 2, and a magnetic turntable 3. The circuit board 2 is fixedly mounted on the top surface of the power module 1. The magnetic turntable 3 is rotated onto the circuit board 2 and fixedly connected to the output shaft of the power module 1. The magnetic turntable 3 is provided with magnetic contacts 4, which are electrically connected to the circuit board 2. The bottom surface of the robot is magnetically connected to the magnetic turntable, so that the magnetic turntable 3 can drive the robot to rotate and can also connect to the charging interface on the bottom surface of the robot through the magnetic contacts to provide power to the robot.

[0029] Reference Figure 2 , Figure 6 As shown, specifically, the magnetic turntable 3 includes a first disc 31A and a second disc 31B. The second disc 31B covers the first disc 31A. At least one magnetic component 35 is disposed within the magnetic turntable 3. A receiving cavity is provided on the bottom surface of the second disc 31B. After the second disc 31B and the first disc 31A are closed, a sealed space is formed between the surface of the first disc 31A and the receiving cavity, allowing the magnetic component 35 to be accommodated within the receiving cavity. In this embodiment, the magnetic component 35 is preferably a magnet, giving the upper surface of the magnetic turntable 3 a stable magnetic adsorption capacity, enabling it to firmly adsorb metal or magnetic components on the bottom surface of the robot, ensuring that the robot will not detach or shift during rotation and docking. Simultaneously, the sealed space design effectively protects the magnetic component 35 from external dust, moisture, and other corrosive factors, extending its service life and ensuring long-term stability of its magnetic performance.

[0030] Reference Figure 2 , Figure 3 As shown, the magnetic turntable 3 further includes a PCBA adapter board 33, and the magnetic contact 4 includes multiple first spring probes 41. The first spring probes 41 are disposed on the PCBA adapter board 33. The second disk of the magnetic turntable 3 is provided with multiple first through holes so that the first spring probes on the PCBA adapter board 33 extend through the first through holes of the magnetic turntable 3 for contact with the robot's charging interface.

[0031] Combination Figure 3 , Figure 7 As shown, the bottom of the PCBA adapter board 33 is provided with a plurality of second spring probes 331, which are arranged in a straight line. The first disk of the magnetic turntable 3 is provided with a plurality of second through holes so that the second spring probes 331 on the PCBA adapter board can pass through the second through holes of the magnetic turntable 3. The surface of the circuit board 2 is provided with a plurality of conductive sheets 21, and the plurality of second spring probes 331 slide in contact with the conductive sheets 21. In this embodiment, the plurality of conductive sheets are designed in a ring shape, and the included angle between the ends of the conductive sheets is 30°-45°. The diameter of the plurality of conductive sheets gradually decreases, so that the plurality of second spring probes can maintain elastic contact with the conductive sheets of the corresponding diameter.

[0032] When the magnetic turntable 3 drives the PCBA adapter board 33 to rotate as a whole, the second spring probe 331 will slide along the circular trajectory of the corresponding conductive sheet. Since the multiple second spring probes are arranged in a straight line, the second spring probes can always maintain electrical connection even if they change position during rotation. This avoids the contact problems of traditional alignment charging, improves the adaptability and stability of charging docking, and ensures that power can be supplied to the successfully docked robot at any time through the path formed by the conductive sheet 21, the second spring probe 331, the PCBA adapter board 33 and the first spring probe 41.

[0033] Reference Figure 2 As shown, the power module 1 further includes a housing 11, a main gear shaft 12, a clutch gear 13, and a drive device 14. In this embodiment, the housing 11 is composed of a first housing 111 and a second housing 112. The first housing 111 and the second housing 112 are preferably fixedly connected by screws. The main gear shaft 12 is rotatably disposed at the center of the housing 11. The middle part of the magnetic turntable 3 is fixedly connected to the main gear shaft 12. A gear set 15 is disposed inside the housing 11, and a clutch disc tooth 16 that is rotatably connected to the gear set 15 is also rotatably disposed inside the housing 11. The clutch disc tooth 16 that is rotatably connected to the gear set 15 has several recesses 161 circumferentially disposed on the inner wall of the clutch disc tooth 16. The clutch gear 13 is screwed onto the clutch disc tooth 16 and is rotatably connected to the main gear shaft 12. The drive device 14 is fixedly disposed inside the housing 11. In this embodiment, the drive device is preferably a motor, and its output shaft is rotatably connected to the gear set. The drive device 14 drives the main gear shaft 12 to rotate the magnetic turntable 3.

[0034] Reference Figure 4 , Figure 8 , Figure 9 As shown, in this embodiment, a shaft 34 is provided at the center of the bottom surface of the magnetic turntable 3. A socket 121 is provided inside the main gear shaft 12, and the shaft 34 is inserted into the socket 121. Several teeth 122 are arranged circumferentially on the inner wall of the socket 121. Several slots 341 matching the teeth 122 are arranged circumferentially on the lower part of the shaft 34. The bottom of the shaft 34 is fixedly connected to the main gear shaft 12 by screws. Through the meshing of the teeth 122 and the slots 341, the torque of the main gear shaft 12 can be effectively transmitted to the magnetic turntable 3, ensuring that the magnetic turntable 3 can rotate synchronously and stably when the main gear shaft 12 rotates, avoiding slippage or free rotation, thus ensuring the reliability and accuracy of the entire rotation process. At the same time, the fixed connection between the shaft 34 and the main gear shaft 12 prevents loosening or detachment during long-term use or under heavy loads, providing double protection for the stable operation of the magnetic turntable 3.

[0035] In this embodiment, the gear set 15 consists of a crown gear, a first double gear, and a second double gear. The crown gear, the first double gear, and the second double gear are rotatably mounted inside the housing and mesh with each other in sequence. A bevel gear that meshes with the crown gear is fixedly mounted on the output shaft of the drive device 14. The second double gear meshes with the clutch disc gear 16, which can realize multi-stage power transmission and speed adjustment.

[0036] Reference Figure 8 , Figure 10 As shown, the lower part of the clutch gear 13 is provided with a plurality of elastic protrusions 132 that match the recess 161 along the circumferential direction. The lower part of the clutch gear 13 is provided with a clutch wheel 131. The plurality of elastic protrusions 132 are equidistantly arranged on the peripheral wall of the clutch wheel 131, and the clutch wheel 131 is provided with arc-shaped grooves 133 corresponding to the elastic protrusions 132. The arc-shaped grooves 133 provide deformation space for the elastic protrusions 132. When the clutch gear 13 and the clutch disc teeth 16 approach and contact each other, the elastic protrusions 132 first contact the clutch disc. The end face of tooth 16 contacts and is squeezed. Under the elastic action of arc groove 133, elastic protrusion 132 contracts and deforms, allowing clutch gear 13 to move smoothly circumferentially towards clutch disc tooth 16 until elastic protrusion 132 corresponds to the next recess 161 of clutch disc tooth 16. At this time, elastic protrusion 132 pops outward and gets stuck in recess 161 under its own elastic restoring force, realizing the rapid and stable meshing of clutch gear 13 and clutch disc tooth 16, thereby completing the power transmission.

[0037] Specifically, when the robot needs charging, the drive unit immediately stops working and locks in its current position. If the magnetic turntable rotates under external force, the clutch gears cannot rotate normally because the drive unit is locked, causing the external force on the clutch gears to gradually increase.

[0038] When the external force increases to exceed the engagement friction between the elastic protrusion 132 and the recess 161, and the elastic deformation limit of the arc groove 133, the elastic protrusion 132 will overcome the constraint of the recess 161 and contract and deform inward towards the arc groove 133, causing relative rotation between the clutch gear 13 and the clutch disc teeth 16. During this process, the elastic protrusion 132 will slide out of the current recess 161 in sequence and slide on the end face of the clutch disc teeth 16 until it encounters the next recess 161 and pops out and engages again. This ensures that even when the drive device is locked, the clutch gear 13 can still rotate relative to the clutch disc teeth 16 under the action of external force. This avoids damage to the drive device under the locked rudder due to forced rotation, or breakage or misalignment of the gear set due to excessive external force. It effectively protects the entire power protection device, ensuring that the robot can withstand accidental collisions or external interference during charging.

[0039] Reference Figure 2 , Figure 8 As shown, a positioning gear 17 is rotatably mounted inside the outer casing 11. The positioning gear 17 meshes with the main gear shaft 12 and the clutch gear 13 respectively. An angle detection module 18 is fixedly mounted on the top surface of the outer casing 11. In this embodiment, the angle detection module 18 is preferably a potentiometer. The shaft of the positioning gear 17 is connected to the angle detection module 18. The angle detection module 18 monitors the rotation angle of the positioning gear 17 in real time, thereby indirectly obtaining the rotation angle information of the magnetic turntable and feeding the angle signal back to the robot's control system. This makes the rotation angle of the magnetic turntable more accurate, providing accurate angle data support for subsequent posture adjustments and further improving the intelligence and reliability of the entire charging system.

[0040] Reference Figures 4-6 As shown, the top surface of the outer casing 11 is provided with multiple protrusions 113 evenly spaced along the circumference. The top surface of each protrusion 113 has an arc-shaped groove 114, on which a freely rotatable ball bearing 115 is embedded. The bottom surface of the magnetic turntable 3 has an annular track 32 that matches the ball bearing 115, thus providing stable support and guidance for the rotation of the magnetic turntable 3, effectively reducing the frictional resistance of the magnetic turntable 3 during rotation, and ensuring smoother and more stable rotation. At the same time, the multiple protrusions 113 are evenly distributed along the circumference, making the force on the magnetic turntable 3 uniform, avoiding the phenomenon of skewing or jamming caused by excessive local force, and further improving the stability and reliability of the entire power protection device.

[0041] Reference Figure 1 , Figure 7 As shown, preferably, one side of the outer casing 11 is recessed inward and provided with a clearance groove. The clearance groove is "V" shaped, which greatly reduces the space occupied by the outer casing, making it easier to install the power protection device in a small space. It can provide additional space for the battery or other electronic components, making the overall structural layout more compact and reasonable.

[0042] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They cannot be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A power protection device for a rotatable robot magnetic charging chassis, characterized in that, The device includes a power module (1), a circuit board (2), and a magnetic turntable (3). The circuit board (2) is fixedly disposed on the top surface of the power module (1). The magnetic turntable (3) is rotated on the circuit board (2) and connected to the power module (1). The magnetic turntable (3) is provided with magnetic contacts (4), which are electrically connected to the circuit board (2) for magnetic charging of the robot. The power module (1) includes a housing (11), a main gear shaft (12), and a clutch gear (13). The main gear shaft (12) is rotatably disposed at the center of the housing (11). The middle part of the magnetic turntable (3) is fixedly connected to the main gear shaft (12). A clutch disc tooth (16) is provided inside the housing (11). The clutch gear (13) is screwed onto the clutch disc tooth (16) and is connected to the main gear shaft (12) for transmission. The inner wall of the clutch disc tooth (16) is arranged circumferentially. There are several recesses (161). The lower part of the clutch gear (13) is provided with several elastic protrusions (132) that mesh with the recesses (161) in the circumferential direction. The clutch gear (13) is driven by the drive device (14) to rotate in conjunction with the main gear shaft (12), thereby driving the magnetic turntable (3) to rotate. When the drive device is in the locked state, the elastic protrusions (132) of the clutch gear (13) slide relative to the recesses (161) of the clutch disc teeth (16) under external force.

2. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, The top surface of the outer shell (11) is provided with a plurality of protrusions (113) equidistantly arranged in the circumferential direction. The top surface of the protrusions (113) has an arc-shaped groove (114). The arc-shaped groove (114) is embedded with a freely rotatable ball (115). The bottom surface of the magnetic turntable (3) has an annular track (32) that matches the ball (115).

3. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, A shaft (34) is provided at the center of the bottom surface of the magnetic turntable (3), and a hole (121) is provided inside the main gear shaft (12). The shaft (34) is inserted into the hole (121).

4. The power protection device for a rotatable robot magnetic charging chassis according to claim 3, characterized in that, The inner wall of the insertion hole (121) is provided with a plurality of insertion teeth (122) along the circumferential direction, and the lower part of the insertion shaft (34) is provided with a plurality of slots (341) that match the insertion teeth (122) along the circumferential direction.

5. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, The clutch gear (13) has a clutch wheel (131) at its lower part. The elastic protrusions (132) are equidistantly arranged on the peripheral wall of the clutch wheel (131), and an arc groove (133) is opened on the clutch wheel (131) corresponding to the elastic protrusions (132).

6. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, The magnetic turntable (3) is provided with a PCBA adapter plate (33), and the magnetic contact (4) includes a first spring probe (41). The first spring probe (41) is disposed on the PCBA adapter plate (33) and extends through the magnetic turntable (3) for contacting the robot's charging interface. The bottom of the PCBA adapter board (33) is provided with a second spring probe (331), and the surface of the circuit board (2) is provided with a conductive sheet (21). The second spring probe (331) slides in contact with the conductive sheet (21).

7. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, The magnetic turntable (3) is provided with at least one magnetic component (35) for magnetically connecting the bottom of the robot to the magnetic turntable (3).

8. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, A gear set (15) is rotatably disposed inside the outer casing (11), and the gear set (15) is connected to the drive device (14) and the clutch disc gear (16) respectively.

9. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, A positioning gear (17) is rotatably disposed inside the outer shell (11). The positioning gear (17) meshes with the main gear shaft (12) and the clutch gear (13) respectively. An angle detection module (18) is disposed on the top surface of the outer shell (11). The shaft of the positioning gear (17) is connected to the angle detection module (18). The rotation angle of the magnetic turntable (3) is detected by the angle detection module (18).

10. The power protection device for a rotatable robot magnetic charging chassis according to claim 1, characterized in that, The outer shell (11) has an inwardly recessed cavity on one side, and the cavity is V-shaped.

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