Base stations and lawn mowing systems

Abstract

This utility model discloses a base station and a lawn mowing system, relating to the field of lawn mowing equipment technology. The base station includes a base station body and a charging post. The base station body has a charging base with at least two horizontally spaced elastic reset members. The charging post is elastically connected to the two elastic reset members on its horizontal sides, and is mounted on the charging base with the ability to swing horizontally at least. The charging post is used to contact the charging end of the lawn mowing robot. The technical solution provided by this utility model aims to reduce the accuracy requirements for charging alignment of the lawn mowing robot and ensure the reliability and stability of automatic docking and charging operations.

Description

Technical Field

[0001] This utility model relates to the field of lawn mowing equipment technology, and in particular to a base station and a lawn mowing system. Background Technology

[0002] In related technologies, lawn mowing robots typically achieve automatic docking and charging by returning to a base station. However, in actual use, due to factors such as navigation errors or environmental interference, lawn mowing robots often struggle to achieve high-precision repositioning during the recharging process. This results in a large alignment deviation between the charging end of the lawn mowing robot and the charging connector of the base station, leading to problems such as poor contact, charging failure, or even equipment damage. Utility Model Content

[0003] The main purpose of this invention is to propose a base station and a lawn mowing system, which aims to reduce the accuracy requirements for charging alignment of lawn mowing robots and ensure the reliability and stability of automatic docking and charging operations.

[0004] To achieve the above objectives, the base station proposed in this utility model includes: A base station body, the base station body having a charging base, the charging base being equipped with at least two resilient reset members distributed at horizontal intervals; and A power plug is provided, with its horizontal sides elastically connected to two elastic reset members. The power plug is mounted on the charging base and can swing horizontally at least. The power plug is used to contact the charging end of the lawnmower robot.

[0005] In one embodiment, the plug-in post includes a connected plug rod and a support head, the support head being movably mounted on the charging base, the support head including two abutment portions located on both horizontal sides of the plug rod, one of the abutment portions being connected to a resilient reset member.

[0006] In one embodiment, the charging base is provided with a mounting cavity and a clearance opening communicating with the mounting cavity. The support head is movably disposed in the mounting cavity, the insertion rod passes through the clearance opening, and the elastic reset member is disposed in the mounting cavity and elastically connected to the abutment portion along the extension direction of the insertion rod.

[0007] In one embodiment, the elastic reset member is configured as a compression spring, which is connected to the side of the support head away from the relief opening and is sandwiched between the abutment portion and the cavity wall of the mounting cavity.

[0008] In one embodiment, the abutting part is provided with a limiting ring groove, the cavity wall of the mounting cavity is recessed with a limiting groove, one end of the compression spring is inserted into the limiting groove, and the other end is sleeved in the limiting ring groove.

[0009] In one embodiment, on the side of the support head opposite to the clearance opening, the mounting cavity has a clearance opening for allowing wires to be electrically connected to the plug post.

[0010] In one embodiment, the support head further includes a connecting portion, and the two abutting portions are respectively connected to the horizontal sides of the connecting portion and disposed near the side of the connecting portion away from the insert rod. At the position of the connecting portion near the insert rod, the connecting portion is provided with convex arc surfaces on at least the horizontal sides. The clearance opening includes a concave arc segment and a limiting segment. The concave arc segment and the convex arc surface slide against each other. The limiting segment and the insert rod have a gap at least in the horizontal direction.

[0011] In one embodiment, the mounting cavity is provided with a removable mounting cover on the side of the support head opposite to the relief opening.

[0012] In one embodiment, the support head has a flat portion on its vertically distributed sidewall, the flat portion being adapted to abut against the cavity wall of the mounting cavity.

[0013] In one embodiment, the support head is provided with a mounting groove, and the insertion rod is inserted into the mounting groove. On the side of the support head away from the insertion rod, the support head locks the insertion rod with a fastener. The fastener abuts against a power terminal on the support head. The power terminal, the fastener, and the insertion rod are made of conductive material.

[0014] This utility model also proposes a lawn mowing system, which includes a lawn mowing robot and a base station as described above, wherein the power plug is used to electrically connect to the charging terminal of the lawn mowing robot.

[0015] The technical solution of this utility model involves a charging base mounted on the base station, within which at least two horizontally spaced elastic reset members are installed. The horizontal sides of the plug are elastically connected to the two elastic reset members, allowing the plug to swing to a certain extent relative to the charging base in the horizontal plane. When the lawnmower robot returns to the base station for charging, even if its charging end is slightly offset horizontally, the plug can be gently swayed in the offset direction during contact, and under the action of the elastic reset members, it remains tightly fitted to the robot's charging end, achieving a reliable electrical connection. Similarly, after the robot detaches, the elastic reset members can drive the plug to automatically reset to its initial position, ensuring the stability of the next charging docking. Thus, this solution improves the fault tolerance of charging docking without relying on high-precision navigation or complex guiding mechanisms, reduces the requirements for the lawnmower robot's return-to-charge positioning accuracy, and avoids interface wear or damage caused by rigid plugging, ensuring the operational reliability and stability of automatic docking and charging. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a base station according to an embodiment of the present invention; Figure 2 for Figure 1 A diagram illustrating the explosion of a base station in China; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 1 A cross-sectional view of a base station; Figure 5 for Figure 4 A magnified view of a section at point B in the middle; Figure 6 for Figure 1 Schematic diagram of the structure of the central insertion post; Figure 7 for Figure 6 A schematic diagram of the explosion of the central plug-in column; Figure 8 for Figure 6 Cross-sectional view of the central insertion post.

[0018] Explanation of icon numbers: 100. Base station body; 110. Charging stand; 120. Clearance opening; 121. Concave arc segment; 122. Limiting segment; 130. Mounting cavity; 140. Mounting cover; 141. Limiting groove; 142. Clearance opening; 200. Elastic reset component; 300. Plug in; 310. Plug in; 320. Support head; 321. Connecting part; 322. Convex arc surface; 323. Abutting part; 324. Limiting ring groove; 325. Flat part; 326. Mounting groove; 330. Fastener; 340. Power terminal.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model proposes a base station.

[0024] Please refer to Figure 1 , Figure 2 and Figure 4 In one embodiment of this utility model, the base station includes: The base station body 100 includes a charging base 110, on which at least two resilient reset members 200 are mounted at horizontal intervals; and The plug post 300 is elastically connected to two elastic reset members 200 on its horizontal sides. The plug post 300 is mounted on the charging base 110 at least horizontally. The plug post 300 is used to contact the charging end of the lawnmower robot.

[0025] The technical solution of this utility model involves a charging base 110 mounted on a base station 100. At least two horizontally spaced elastic reset members 200 are installed within the charging base 110. The horizontal sides of the plug-in post 300 are elastically connected to the two elastic reset members 200, allowing the plug-in post 300 to swing to a certain extent relative to the charging base 110 in the horizontal plane. When the lawnmower robot returns to the base station for charging, even if its charging end is slightly offset horizontally, the plug-in post 300 can be gently swayed in the offset direction during contact, and under the action of the elastic reset members 200, it remains tightly fitted to the robot's charging end, achieving a reliable electrical connection. Similarly, after the robot detaches, the elastic reset members 200 can drive the plug-in post 300 to automatically reset to its initial position, ensuring the stability of the next charging docking. Thus, this solution improves the fault tolerance of charging docking without relying on high-precision navigation or complex guiding mechanisms, reduces the requirements for the lawnmower robot's return-to-charge positioning accuracy, and avoids interface wear or damage caused by rigid plugging, ensuring the operational reliability and stability of automatic docking and charging.

[0026] It should be noted that the direction of the elastic force exerted by the elastic reset member 200 on the plug post 300 can be consistent with the extension direction of the plug post 300, but with a horizontal misalignment between their positions. This results in two elastic reset members 200 on either side of the plug post 300, extending along its axial direction. Depending on their position, the elastic reset members 200 can be configured as compression springs or tension springs. Alternatively, the direction of the elastic force exerted by the elastic reset member 200 on the plug post 300 can also be at an angle to the extension direction of the plug post 300. For example, if the elastic reset members 200 are located on either side of the plug post 300, and the plug post 300 has a rotating support that rotates horizontally within the charging base 110, then the elastic reset members 200 have a gap between themselves and the rotating support in the extension direction of the plug post 300, and can exhibit an elastically extended or elastically contracted state. Without loss of generality, the plug post 300 is mounted on the vertically positioned side wall of the charging base 110, and the plug post 300 extends horizontally or nearly horizontally to engage with the charging end of the lawnmower robot on a horizontal plane.

[0027] In one embodiment, please refer to Figure 3 and Figure 5The charging post 300 includes a connected plug rod 310 and a support head 320. The support head 320 is movably mounted on the charging base 110. The support head 320 includes two abutment portions 323 located on both horizontal sides of the plug rod 310, and one abutment portion 323 is connected to an elastic reset member 200. It can be understood that the support head 320 is located within the charging base 110, and the swinging of the plug rod 310 relies on the support of the support head 320 on the charging base 110. The abutment portions 323 on both horizontal sides of the support head 320 are correspondingly connected to an elastic reset member 200 mounted on the charging base 110, so that the charging post 300 is elastically positioned between the two elastic reset members 200 through the support head 320, thereby forming a stable elastic support system in the horizontal direction. When the charging end of the lawnmower robot contacts the insertion rod 310, if there is a horizontal positional deviation, the insertion rod 310 can swing slightly in the horizontal plane around the support head 320. The two abutting parts 323 generate coordinated elastic deformation and reaction force through the corresponding elastic reset members 200, so that the insertion rod 310 adjusts its posture to insert into the charging end. After charging is completed, the elastic reset members 200 can drive the support head 320 to drive the insertion rod 310 to smoothly return to the initial position, preparing for the next docking. Of course, in other embodiments, the vertical sides of the insertion rod 310 can be provided with rotation, rotatably connected to the charging base 110, and the elastic reset members 200 can be provided on the horizontal sides of the insertion rod 310.

[0028] Furthermore, in this embodiment, please refer to Figure 3 and Figure 5The charging base 110 is provided with a mounting cavity 130 and a clearance opening 120 communicating with the mounting cavity 130. The support head 320 is movably disposed in the mounting cavity 130. The insertion rod 310 passes through the clearance opening 120. The elastic reset member 200 is disposed in the mounting cavity 130 and elastically connected to the abutment portion 323 along the extension direction of the insertion rod 310. The insertion rod 310 extends from the support head 320 and passes through the clearance opening 120 to extend outside the charging base 110 and contact the charging end of the lawnmower robot. At the same time, two elastic reset members 200 are also disposed in the mounting cavity 130 and elastically connected to the abutment portions 323 on both horizontal sides of the support head 320 along the extension direction of the insertion rod 310, respectively. Thus, this embodiment provides good protection and limitation for the support head 320 and the elastic reset member 200, preventing external dust, rain, or mechanical collisions from interfering with the moving parts. Furthermore, the clearance opening 120 provides necessary space for the horizontal swing of the insertion rod 310, allowing the insertion rod 310 to moderately tilt horizontally within the mounting cavity 130 when subjected to lateral forces from the lawnmower robot's charging end. The elastic reset member 200 then undergoes compression or stretching deformation, absorbing positional deviations during the docking process. Additionally, the extension direction of the elastic reset member 200 is consistent with the extension direction of the insertion rod 310, reducing the space occupied by the horizontal sides of the insertion rod 310 and lowering the installation space requirements on both sides of the insertion rod 310.

[0029] Specifically, in this embodiment, please continue to refer to... Figure 3 and Figure 5 The elastic reset element 200 is configured as a compression spring. It is connected to the side of the support head 320 facing away from the clearance opening 120 and is sandwiched between the abutment portion 323 and the cavity wall of the mounting cavity 130. Understandably, when the plug post 300 is not subjected to external force, the elastic preload keeps the support head 320 stably in its initial aligned position within the mounting cavity 130. When the charging end of the lawnmower robot contacts the plug rod 310 and there is a horizontal positional deviation, the plug rod 310 drives the support head 320 to move towards the offset side, further compressing the elastic reset element 200 on the corresponding side, while the elastic reset element 200 on the other side releases some of the preload. This forms a dynamically balanced elastic buffer mechanism, allowing the plug rod 310 to adaptively adjust to the actual position of the charging end, ensuring full contact of the electrical contact surfaces. After charging is complete, the elastic reset elements 200 on both sides, relying on their own restoring force, work together to push the support head 320 and the plug rod 310 back to their initial state smoothly and accurately. Of course, in other embodiments, the elastic reset member 200 may also be located on the side of the support head 320 facing the relief opening 120 and sandwiched between the abutment portion 323 and the cavity wall of the mounting cavity 130. Here, the elastic reset member 200 is configured as a tension spring.

[0030] Regarding the installation of the elastic reset member 200, in one embodiment, please refer to... Figure 3 and Figure 5 The abutment portion 323 is provided with a limiting annular groove 324, and the cavity wall of the mounting cavity 130 is recessed with a limiting groove 141. One end of the compression spring is inserted into the limiting groove 141, and the other end is sleeved in the limiting annular groove 324. It can be understood that during assembly, one end of the compression spring is inserted into and confined in the limiting groove 141 of the cavity wall, while the other end is sleeved and held in the limiting annular groove 324 of the abutment portion 323. This achieves stable installation and precise guidance of the compression spring between the support head 320 and the mounting cavity 130, thereby preventing the compression spring from shifting, falling off, or twisting during repeated compression and reset, and ensuring that it always provides uniform and reliable elastic force along the extension direction of the insertion rod 310. Furthermore, the limiting groove 141 is provided in the cavity wall of the mounting cavity 130, and the limiting ring groove 324 has a shallow depth. On the one hand, this reduces the need for modifications to the support head 320. On the other hand, a protruding post is formed at the center of the limiting ring groove 324, which is inserted into the end of the compression spring. When the plug post 300 swings horizontally, the protruding post can also form a limiting position with the elastic limiting member, preventing the elastic reset member 200 from dislodging. Of course, in other embodiments, the limiting ring groove 324 can also be provided in the cavity wall of the mounting cavity 130, and the limiting groove 141 can be provided in the abutment portion 323.

[0031] In one embodiment, please refer to Figures 3 to 5 On the side of the support head 320 opposite to the clearance opening 120, the mounting cavity 130 has a clearance opening 142, which is used for the electrical connection of wires to the plug post 300. It can be understood that the clearance opening 142 allows wires to pass through and connect to the plug post 300; this provides an independent and uninterrupted wiring channel for the internal wires while ensuring that the plug post 300 can swing horizontally within the mounting cavity 130. This prevents the wires from being pulled, bent, or worn during repeated swinging of the plug post 300, thus ensuring the long-term reliability and safety of the electrical connection. At the same time, the clearance opening 142 is located behind the active area of ​​the support head 320, away from the contact area between the plug post 300 and the robot charging end. This does not affect the elastic reset and adaptive alignment function of the plug post 300, and also isolates the wire connector from external environmental interference. Of course, in other embodiments, the support head 320 and the mounting cavity 130 can be configured as a conductive structure to realize the electrical connection between the plug post 300 and the power supply components in the base station body 100.

[0032] In one embodiment, please refer to Figure 4 , Figure 5 and Figure 8The support head 320 also includes a connecting portion 321. Two abutting portions 323 are respectively connected to the horizontal sides of the connecting portion 321 and are located near the side of the connecting portion 321 away from the insertion rod 310. At the position of the connecting portion 321 near the insertion rod 310, the connecting portion 321 has convex arc surfaces 322 on at least both horizontal sides. The clearance opening 120 includes a concave arc segment 121 and a limiting segment 122. The concave arc segment 121 and the convex arc surface 322 slide against each other, and the limiting segment 122 and the insertion rod 310 have a gap at least in the horizontal direction. It can be understood that when the plug-in column 300 is subjected to a lateral force from the charging end of the lawnmower robot, it can guide the plug-in column 300 to swing at the contact point between the convex arc surface 322 and the concave arc segment 121, achieving a smooth, low-friction swing in the horizontal plane. This allows for adaptive adjustment to the positional deviation of the charging end, reducing the force on the insertion rod 310 and ensuring the structural stability of the plug-in column 300. Meanwhile, the gap between the limiting section 122 and the insertion rod 310 not only restricts the excessive swinging of the insertion rod 310, but also provides the necessary degree of freedom for the swinging process, avoiding structural jamming or stress concentration. Furthermore, the abutment portion 323 is positioned near the distal end of the connecting portion 321, so that the force application point of the elastic reset member 200 is far from the insertion rod 310, forming a better leverage effect and improving the response sensitivity to small offsets. Thus, through the sliding fit between the convex arc surface 322 and the concave arc section 121 and the reasonable lever arm layout, while ensuring reliable reset of the insertion post 300, the horizontal alignment tolerance is enhanced, and the stability and durability of the charging process are improved. Of course, in other embodiments, a limiting structure can also be provided between the abutment portion 323 and the cavity wall of the mounting cavity 130 to limit the horizontal swinging of the insertion rod 310.

[0033] In one embodiment, please refer to Figure 2 and Figure 3 On the side of the support head 320 facing away from the clearance opening 120, the mounting cavity 130 is provided with a removable mounting cover 140. It can be understood that the mounting cover 140 is detachably connected to the main body of the charging base 110 by means of snap-fit, screw fastening, etc., to close the rear opening of the mounting cavity 130. This not only facilitates the installation of internal components such as the support head 320, compression spring, and wires into the mounting cavity 130 from the rear during the assembly stage, improving production efficiency and assembly accuracy, but also allows for quick access to internal components during later maintenance or replacement of components such as the elastic reset piece 200 and the plug post 300 without disassembling the entire charging base 110; only the mounting cover 140 needs to be removed, reducing maintenance costs and operational difficulty. The clearance opening 142 and the limiting groove 141 described above are formed within the mounting cover 140. Of course, in other embodiments, the mounting cover 140 can also be installed by welding, making the mounting cavity 130 a single integrated structure.

[0034] In one embodiment, please refer to Figure 3 , Figure 5 and Figure 6 The support head 320 has flat sections 325 on its vertically distributed sidewalls, which fit and abut against the cavity wall of the mounting cavity 130. It can be understood that during the swinging of the plug-in post 300, the flat sections 325 abut against and slide relative to the cavity wall of the mounting cavity 130, forming a vertical limit on the support head 320. This ensures that the plug-in post 300 maintains a horizontal posture during horizontal swinging, preventing vertical rotational offset that could cause vertical alignment deviation between the plug rod 310 and the charging end of the lawnmower robot, thus ensuring the stability of the charging connection. In this way, the surface contact between the flat sections 325 and the cavity wall provides good guidance and limiting function without hindering the horizontal swinging of the support head 320, helping to improve the consistency and repeatability of the plug-in post 300's reset. Of course, in other embodiments, rotating shafts can also be provided on both sides of the vertically distributed support head 320, forming a rotational fit with the cavity wall of the mounting cavity 130 to limit the stability and reliability of the plug-in post 300 during horizontal swinging.

[0035] In one embodiment, please refer to Figure 5 and Figure 8 The support head 320 is provided with a mounting groove 326, and the insertion rod 310 is inserted into the mounting groove 326. On the side of the support head 320 away from the insertion rod 310, the support head 320 locks the insertion rod 310 with a fastener 330. The fastener 330 abuts against a power terminal 340 on the support head 320. The power terminal 340, the fastener 330, and the insertion rod 310 are all made of conductive materials. It can be understood that the fastener 330 is configured as a screw, bolt, or pin structure to axially lock the insertion rod 310 to the support head 320; at the same time, during the locking process, the fastener 330 presses against a power terminal 340, so that the power terminal 340 is tightly attached to the fastener 330, thereby forming a continuous conductive path from the insertion rod 310, the fastener 330 to the power terminal 340. Since the insertion rod 310, fastener 330, and electrical terminal 340 are all made of conductive materials, overheating or electrolytic corrosion caused by poor contact between multiple components is avoided, as is arcing caused by conductivity of the support head 320. This ensures the secure installation of the insertion rod 310 within the support head 320 and achieves highly reliable electrical conduction. Furthermore, in conjunction with the above description of the clearance opening 142, which is axially opposite to the fastener 330 of this embodiment along the insertion rod 310, in the event of a fault in the electrical terminal 340, operation can be performed through the clearance opening 142 to disassemble and reassemble the fastener 330, thereby replacing the electrical terminal 340 and completing the maintenance of the insertion post 300, thus reducing the difficulty of maintenance and replacement operations.

[0036] This utility model also proposes a lawn mowing system, which includes a base station. The specific structure of the base station is as described in the above embodiments. Since this lawn mowing system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The lawn mowing system also includes a lawn mowing robot, and the power plug 300 of the base station is used to electrically connect to the charging end of the lawn mowing robot.

[0037] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A base station, characterized in that, include: A base station body, the base station body having a charging base, the charging base being equipped with at least two elastic reset members distributed at horizontal intervals; as well as A power plug is provided, with its horizontal sides elastically connected to two elastic reset members. The power plug is mounted on the charging base and can swing horizontally at least. The power plug is used to contact the charging end of the lawnmower robot.

2. The base station as described in claim 1, characterized in that, The plug-in post includes a connected plug rod and a support head. The support head is movably mounted on the charging base. The support head includes two abutment portions located on both horizontal sides of the plug rod, and one of the abutment portions is connected to a resilient reset member.

3. The base station as described in claim 2, characterized in that, The charging base is provided with a mounting cavity and a clearance opening communicating with the mounting cavity. The support head is movably disposed in the mounting cavity. The insertion rod passes through the clearance opening. The elastic reset member is disposed in the mounting cavity and elastically connected to the abutment part along the extension direction of the insertion rod.

4. The base station as described in claim 3, characterized in that, The elastic reset member is configured as a compression spring. The elastic reset member is connected to the side of the support head away from the relief opening and is sandwiched between the abutment part and the cavity wall of the mounting cavity.

5. The base station as described in claim 4, characterized in that, The abutting part is provided with a limiting ring groove, the cavity wall of the mounting cavity is recessed with a limiting groove, one end of the compression spring is inserted into the limiting groove, and the other end is sleeved in the limiting ring groove.

6. The base station as described in claim 3, characterized in that, On the side of the support head away from the clearance opening, the mounting cavity has a clearance opening for the wire to be electrically connected to the plug post.

7. The base station as described in claim 3, characterized in that, The support head also includes a connecting part, and the two abutting parts are respectively connected to the horizontal sides of the connecting part and are disposed near the side of the connecting part away from the insertion rod. At the position of the connecting part near the insertion rod, the connecting part is provided with a convex arc surface at least on both horizontal sides. The clearance opening includes a concave arc segment and a limiting segment. The concave arc segment and the convex arc surface slide against each other. The limiting segment and the insertion rod have a gap at least in the horizontal direction.

8. The base station as described in claim 3, characterized in that, On the side of the support head opposite to the relief opening, the mounting cavity is provided with a removable mounting cover; And / or, the support head is provided with a flat part along the vertically distributed sidewall, the flat part being adapted to abut against the cavity wall of the mounting cavity.

9. The base station as described in claim 2, characterized in that, The support head is provided with a mounting groove, and the insertion rod is inserted into the mounting groove. On the side of the support head away from the insertion rod, the support head locks the insertion rod with a fastener. The fastener abuts against a power terminal on the support head. The power terminal, the fastener, and the insertion rod are made of conductive material.

10. A lawn mowing system, characterized in that, Includes a lawnmower robot and a base station as described in any one of claims 1 to 9, wherein the plug is used for electrical connection to the charging end of the lawnmower robot.

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