Antenna assembly of a self-moving device and self-moving device

Abstract

This utility model relates to antenna assemblies, and more particularly to an antenna assembly for a self-moving device and the self-moving device itself, to solve the technical problem that antenna assemblies with added extension brackets are prone to collision damage or even breakage in narrow spaces, work sites, and low obstacles. The antenna assembly of this self-moving device includes an radome, an extension bracket, and a connecting component; wherein the hardness of the extension bracket is less than that of the radome, specifically 85-95A, allowing it to slightly bend or deform upon impact and absorb some of the impact energy; the connecting component adopts an upper-closed, lower-open structure to form a sleeve-like support, covering the upper end of the extension bracket during installation to form a stable connection support. The connecting component includes a cylindrical section and a frustum section, wherein the outer diameter of the frustum section gradually decreases from top to bottom, forming a smooth transition, effectively avoiding stress concentration and improving the overall impact resistance of the structure.

Description

Technical Field

[0001] This utility model relates to antenna components, and more particularly to an antenna component for a self-moving device and a self-moving device. Background Technology

[0002] Self-moving devices need to acquire location information during operation to achieve path planning, autonomous navigation, and other functions. Therefore, self-moving devices are equipped with antenna components for receiving signals. Since some antennas (such as GNSS antennas, cellular communication antennas, millimeter-wave radar antennas, etc.) need to ensure unobstructed signal transmission, the antenna components need to be installed on the outside of the self-moving device and equipped with extension brackets.

[0003] However, after the antenna assembly is fitted with an extension bracket, the overall height increases and the structure becomes exposed, making it susceptible to collision damage or even breakage in narrow spaces, work sites, or low obstacles. Utility Model Content

[0004] The present invention aims to provide an antenna assembly and a self-moving device, which can solve the technical problem that the antenna assembly is prone to collision damage or even breakage in narrow spaces, work sites, and low obstacles after the extension bracket is added.

[0005] An antenna assembly for a self-moving device includes an antenna cover and an extension bracket. An antenna body is disposed inside the antenna cover. The upper end of the extension bracket is connected to the antenna cover, and the lower end is used to connect to the self-moving device. A first through hole is provided on the extension bracket.

[0006] Its special feature is that it also includes a connecting component located at the connection between the radome and the extension bracket;

[0007] The connecting assembly is a shell with an open bottom. The connecting assembly includes a cylindrical segment and a frustum segment that are connected from top to bottom and sleeved on the outer periphery of the upper end of the extension bracket. The outer diameter of the cylindrical segment is equal from top to bottom, and the outer diameter of the frustum segment decreases from top to bottom.

[0008] The top surface of the cylindrical section is provided with a second through hole that communicates with the first through hole. The second through hole and the first through hole form a cable through hole for passing through the cable connecting the antenna body and the self-moving device.

[0009] The rigidity of the extension bracket is less than that of the radome.

[0010] Optionally, the extension bracket includes a connecting segment and a main body connected sequentially from top to bottom;

[0011] The outer diameter of the connecting section is equal from top to bottom;

[0012] The outer diameter of the main body increases from top to bottom, and the radial cross-section is circular;

[0013] The cylindrical segment and the frustum segment are respectively fitted onto the outer periphery of the connecting segment and the upper end of the main body.

[0014] Optionally, the outer diameter of the upper end of the main body is smaller than the outer diameter of the connecting section, and the outer wall of the upper end of the main body and the lower end face of the connecting section form an outer stepped surface;

[0015] The inner wall of the cylindrical section is provided with a reinforcing ring, and the top surface and inner circumference of the reinforcing ring are respectively fitted with the outer step surface and the outer wall of the upper end of the main body.

[0016] Optionally, at least one reinforcing column is provided on the inner wall of the frustum section perpendicular to the main axis, with each reinforcing column connected to the inner wall of the frustum section at both ends and passing through the first through hole in the middle.

[0017] Optionally, the cylindrical segment includes a connecting sleeve and a housing sleeve coaxially sleeved on the connecting sleeve, wherein the axial length of the housing sleeve is less than the axial length of the connecting sleeve.

[0018] The housing sheath is a housing with an opening at the lower end, and the second through hole is provided on the top surface.

[0019] Optionally, it also includes multiple horizontal connectors;

[0020] The connecting sleeve and the frustum section are divided into two symmetrical parts, each part including half of the connecting sleeve and half of the frustum section;

[0021] One end of each of the reinforcing columns is fixed to the inner wall of half of the frustum section, and the other end is provided with a first horizontal connecting hole. The other half of the frustum section is provided with a plurality of second horizontal connecting holes, which correspond to the plurality of first horizontal connecting holes respectively.

[0022] Each of the horizontal connectors passes through the corresponding second horizontal connection hole and the first horizontal connection hole in sequence, and is fixed to the corresponding reinforcing column.

[0023] Optionally, it also includes multiple vertical connectors;

[0024] The inner wall of the connecting sleeve is provided with a plurality of convex and circumferentially distributed limiting posts, the axis of the limiting posts being parallel to the axis of the connecting sleeve, and the outer wall of the connecting section is provided with a plurality of cylindrical grooves that are adapted to the plurality of limiting posts respectively.

[0025] Each of the limiting posts is provided with a first vertical connecting hole at its upper end, and the housing sheath is provided with a plurality of second vertical connecting holes corresponding to the plurality of first vertical connecting holes respectively. Each vertical connector passes through the corresponding second vertical connecting hole and the first vertical connecting hole in sequence and is fixed to the corresponding limiting post.

[0026] Optionally, the lower end of each of the limiting posts is disposed on the reinforcing ring.

[0027] Optionally, the inner diameter of the upper end of the main body is smaller than the inner diameter of the connecting section, and the end face of the upper end of the main body forms an inner stepped surface with the inner wall of the connecting section; a limiting element is provided on the inner stepped surface to limit the position of the cable in the cable through hole;

[0028] The housing sheath has a downwardly protruding annular pressure block on the outer periphery of the first through hole, and the annular pressure block abuts against the limiting member.

[0029] This utility model also provides a self-moving device, which is characterized in that it includes a device housing and an antenna assembly of the self-moving device disposed on the outer wall of the device housing.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] (1) The present invention provides an antenna assembly for a self-moving device, comprising an antenna radome, an extension bracket, and a connecting assembly; wherein the hardness of the extension bracket is less than that of the antenna radome, specifically 85~95 A, which allows it to bend or deform slightly upon impact and absorb some of the impact energy; the connecting assembly adopts an upper closed and lower open structure to form a sleeve surrounding support, which covers the upper end of the extension bracket during installation to form a stable connecting support, the connecting assembly comprising a cylindrical section and a frustum section, wherein the outer diameter of the frustum section gradually decreases from top to bottom to form a smooth transition, effectively avoiding stress concentration and improving the overall impact resistance of the structure; based on the above structural design, the present invention can provide a good impact buffering effect during the operation of the self-moving device, effectively protecting the antenna body and its connecting cables, and improving the stability and durability of the system operation.

[0032] (2) The extension bracket in this utility model includes a connecting section and a main body. The connecting section is used to provide a regular positioning surface to ensure connection accuracy and stability. The main body is used to enhance strength while reducing stress concentration. The frustum section is sleeved on the outer periphery of the upper end of the main body. The two form a cone-shaped mating structure so that the load gradually transitions from the connection to the lower end of the main body without abrupt change.

[0033] (3) In this utility model, the outer wall of the upper end of the main body and the lower end face of the connecting section form an outer step surface. By strengthening the top surface of the ring and the outer step surface, an axial stop is provided to prevent the frustum section from moving up and down. By strengthening the inner circumference of the ring and the outer wall of the upper end of the main body, a radial clamping fit is formed to enhance the connection stability and anti-torsion performance.

[0034] (4) In this utility model, the reinforced column and the frustum section form an overall support frame to compensate for the fact that the frustum section is less rigid than the column section and to prevent the frustum section from being compressed or deformed by external forces.

[0035] (5) In this utility model, the cylindrical section includes a connecting sleeve and a housing sleeve, and the axial length of the housing sleeve is less than the axial length of the connecting sleeve, so as to avoid the housing sleeve being too long and becoming a load-bearing component, thereby improving the impact resistance and robustness.

[0036] (6) In this utility model, the connecting sleeve is a left-right symmetrical split structure. The reinforcing column is used for both reinforcement and connection, further enhancing the strength. The connecting sleeve can be separated by removing the horizontal connecting piece without affecting other components.

[0037] (7) In this utility model, the positioning is achieved by the engagement of the limiting post with the cylindrical groove on the outer wall of the connecting section, so as to prevent rotation; and the lower end of each limiting post is set on the reinforcing ring, so that the vertical load is distributed and transmitted from the connecting sleeve to the main body of the limiting post, the reinforcing ring and the extension bracket in sequence, so as to improve the overall strength. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of an antenna assembly embodiment of a self-moving device according to the present invention;

[0039] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the connecting component, the extension bracket, and the radial protruding ring in an embodiment of this utility model (the housing cover is not shown).

[0041] Figure 4 This is a schematic diagram of the bottom surface of the housing sheath in an embodiment of this utility model;

[0042] Figure 5 This is a radial sectional view of the connecting component in an embodiment of the present invention (the housing cover is not shown).

[0043] The reference numerals in the attached drawings are explained as follows: 010-Cable, 011-Clamping ring; 10-Radiator cover; 20-Extension bracket, 21-Connecting section, 22-Main body, 23-Outer stepped surface, 24-Inner stepped surface; 300-Connecting assembly, 310-Cylindrical section, 311-Connecting sleeve, 3111-Limiting post, 3112-Clamping block, 312-Shell sleeve, 3121-Second through hole, 3122-Annular pressure block, 3123-Clamping groove, 313-Reinforcing ring, 320-Frustum section, 321-Reinforcing post; 40-Radial convex ring, 41-Screw hole; 5-Limiting component; 61-First horizontal connecting hole, 62-Second horizontal connecting hole, 63-First vertical connecting hole, 64-Second vertical connecting hole. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] A self-moving device includes a device housing and an antenna assembly of the self-moving device disposed on the outer wall of the device housing.

[0046] Understandably, the aforementioned self-moving device refers to an intelligent device that can achieve autonomous or semi-autonomous movement, obstacle avoidance, navigation, and task execution without external power traction, relying on its own configured power and control systems. The task scenarios can include snow removal, lawn mowing, leaf blowing, etc. The self-moving device includes a communication module for communicating with a remote control platform / cloud. The communication module is divided into multiple sub-modules, such as a cellular communication sub-module, a short-range communication sub-module, a positioning / satellite communication sub-module, and a low-power long-range communication module. The positioning / satellite communication sub-module includes a receiving module and an antenna body. The antenna body is connected to the receiving module via a cable (Radio Frequency Cable).

[0047] Reference Figures 1-5 The antenna assembly of the aforementioned self-moving device includes an antenna cover 10, an extension bracket 20, and a connecting assembly 300 disposed at the connection between the antenna cover 10 and the extension bracket 20.

[0048] The antenna body is provided inside the radome 10. The upper end of the extension bracket 20 is connected to the radome 10, and the lower end is used to connect to the device housing of the self-moving device. The extension bracket 20 is provided with a first through hole that runs vertically through the device.

[0049] The aforementioned connecting component 300 is a housing with an open bottom. The connecting component 300 includes a cylindrical section 310 and a frustum section 320 that are connected from top to bottom and sleeved on the outer periphery of the upper end of the aforementioned extension bracket 20. The outer diameter of the cylindrical section 310 is equal from top to bottom, and the outer diameter of the frustum section 320 decreases from top to bottom. The top surface of the cylindrical section 310 is provided with a second through hole 3121 that communicates with the first through hole. The second through hole 3121 and the first through hole form a cable through hole for passing through the cable 010 connecting the antenna body and the self-moving device.

[0050] The hardness of the aforementioned extension bracket 20 is less than that of the antenna cover 10, and the hardness of the extension bracket 20 is 85~95 A.

[0051] Understandably, the antenna cover 10 is used to protect the antenna body and is installed at the top; the antenna body is used to receive signals; the extension bracket 20 is used to raise the position of the antenna body to avoid interference areas, and it is provided with a first through hole for the cable 010 connecting the antenna body and the receiver / motherboard to pass through; the connection component 300 is used to securely connect the antenna cover 10 and the extension bracket 20, and at the same time form a covering and buffer connection for the cable 010 and the structure.

[0052] In this embodiment, the hardness of the extension bracket 20 is less than that of the radome 10. The hardness of the extension bracket 20 is 85~95 A, which allows the extension bracket 20 to deform or absorb energy first when subjected to external force, preventing the radome 10 from breaking directly. Specifically, the material of the extension bracket 20 can be TPU (Thermoplastic Polyurethanes) 95A, TPE (Thermoplastic Elastomer), low-hardness nylon (PA12 flexible grade), etc.; the hardness of the radome 10 is 70~80 D, and the material can be PC-ASA (Polycarbonate / Acrylonitrile Styrene Acrylate), PA66+GF (Polyamide 66 + Glass Fiber), ABS+PC alloy (ABS + Polycarbonate Alloy), etc.

[0053] In this embodiment, the connecting component 300 is a partially closed sleeve structure. Its bottom (the side facing the extension bracket 20) is open, while the upper part only has a second through hole 3121. When the radome 10 is subjected to an impact force (such as an impact), the force is transmitted from the radome 10 to the connecting component 300, and then evenly distributed to the extension bracket 20 through the enclosed shell structure. This prevents the force from concentrating at the edge of the connection joint, causing material fatigue or fracture. The connecting component 300 includes a cylindrical segment 310 and a frustum segment 320 connected sequentially from top to bottom. The cylindrical segment 310 and the frustum segment 320 are fitted onto the outer periphery of the upper end of the extension bracket 20, forming a transition fit or interference fit to ensure a stable connection. The outer diameter of the frustum segment 320 decreases from top to bottom to avoid stress concentration and improve the overall impact resistance of the structure. Specifically, the maximum outer diameter of the frustum segment 320 is equal to the outer diameter of the cylindrical segment 310, that is, the outer diameters of the two are equal at the connection, achieving a geometrically continuous connection.

[0054] The hardness of the aforementioned connecting component 300 can be 70~80 D to maintain structural strength and stable connection. The material can be TPU 95A, TPE, flexible PA (Polyamide Elastomer), etc.

[0055] In some embodiments, refer to Figures 2-3The aforementioned extension bracket 20 includes a connecting segment 21 and a main body 22 connected sequentially from top to bottom; the outer diameter of the connecting segment 21 is equal from top to bottom; the outer diameter of the main body 22 increases from top to bottom, and the radial cross section is circular; the cylindrical segment 310 and the frustum segment 320 are respectively fitted onto the outer periphery of the upper end of the connecting segment 21 and the main body 22.

[0056] Understandably, the connecting segment 21 is used to provide a regular positioning surface to ensure connection accuracy and stability; the main body 22 serves as a supporting body to enhance strength while reducing stress concentration.

[0057] In this embodiment, the cylindrical segment 310 is fitted around the outer periphery of the connecting segment 21 to form a transition fit or interference fit, ensuring a stable connection; the frustum segment 320 is fitted around the upper outer periphery of the main body 22. The outer diameter of the frustum segment 320 decreases from top to bottom, while the outer diameter of the main body 22 increases from top to bottom. The two form a conical mating structure, so that the load gradually transitions from the connection to the lower end of the main body 22 without abrupt changes.

[0058] In some embodiments, refer to Figures 1-3 The lower end of the main body 22 is provided with a radial protruding ring 40, and the radial protruding ring 40 is provided with a plurality of through screw holes 41 for fixing to the equipment housing by bolts.

[0059] Understandably, the aforementioned radial protruding ring 40 serves as a flange-type base for connecting the device housing of the self-moving device; in other embodiments, a polygonal base may also be provided at the lower end of the main body 22 to improve torsional rigidity, or a conical base may be used in conjunction with snap-fit ​​installation or press-fit fixation to achieve quick assembly and disassembly.

[0060] In some embodiments, refer to Figure 2 The outer diameter of the upper end of the main body 22 is smaller than the outer diameter of the connecting section 21, and the outer wall of the upper end of the main body 22 and the lower end face of the connecting section 21 form an outer stepped surface 23.

[0061] The inner wall of the cylindrical section 310 is provided with a reinforcing ring 313. The top surface and inner circumference of the reinforcing ring 313 are respectively clearance-fitted with the outer step surface 23 and the upper outer wall of the main body 22. The top surface of the reinforcing ring 313 fits with the outer step surface 23 to provide axial stop and prevent the frustum section 320 from moving up and down. The inner circumference of the reinforcing ring 313 fits with the upper outer wall of the main body 22 to form a radial clamping fit, which enhances the connection stability and anti-torsional performance. The clearance fit is used to provide buffering.

[0062] In other embodiments, refer to Figure 3The inner diameter of the upper end of the main body 22 is smaller than the inner diameter of the connecting section 21, and the upper end face of the main body 22 and the inner wall of the connecting section 21 form an inner step surface 24. A limiting member 5 is provided on the inner step surface 24 to cooperate with the retaining ring 011 on the cable 010 to limit the position of the cable 010 in the cable through hole and prevent the cable 010 from sliding or sagging along the axis during the operation of the self-moving device. The limiting member 5 can be a retaining ring, a soft rubber ring, a tooth structure, etc.

[0063] The housing sleeve 312 has a downwardly protruding annular pressure block 3122 on the outer periphery of the first through hole. The annular pressure block 3122 abuts against the limiting member 5 and is adapted in shape. The material of the annular pressure block 3122 can be PC, PA66, PC-ABS, etc.

[0064] The limiting component 5 is clamped between the inner step and the annular pressure block 3122, and the annular pressure block 3122 can have its own vertical pre-tightening force through the assembly itself (such as buckles, screws, fasteners, etc.), which is intended to effectively suppress the shaking, loosening or even falling off of the cable 010 in the vibration environment of the equipment.

[0065] In some embodiments, refer to Figure 2 , Figure 5 At least one reinforcing column 321 is provided on the inner wall of the aforementioned frustum section 320 perpendicular to the axis of the main body 22. In this embodiment, two columns are provided. Each reinforcing column 321 is connected to the inner wall of the frustum section 320 at both ends and passes through the first through hole in the middle.

[0066] The reinforcing column 321 and the frustum section 320 form an integral support frame to compensate for the fact that the frustum section 320 is less rigid than the column, and to prevent the frustum section 320 from being compressed or deformed by external forces; and the reinforcing column 321 passes through the first through hole, but does not obstruct the cable 010, which can be avoided by the through hole or the cable 010 can pass through the reinforcing column 321.

[0067] In some embodiments, refer to Figures 2-5 The cylindrical segment 310 includes a connecting sleeve 311 and a housing sleeve 312 coaxially sleeved on the connecting sleeve 311; the housing sleeve 312 is a housing with an open lower end and the second through hole 3121 is provided on the top surface, and the axial length of the housing sleeve 312 is less than the axial length of the connecting sleeve 311.

[0068] Understandably, the aforementioned connecting sleeve 311 is the main connecting component that plugs into the extension bracket 20, used to provide main mechanical connection support; the aforementioned housing sleeve 312 covers the connecting sleeve 311 and the upper end of the extension bracket 20, providing additional protection, while protecting the cable 010 from being pulled or bent; the axial length of the housing sleeve 312 is less than the axial length of the connecting sleeve 311, that is, the housing sleeve 312 does not cover the entire length of the connecting sleeve 311, to avoid the housing sleeve 312 becoming too long and becoming a load-bearing component, thus improving impact resistance; the housing sleeve 312 and the connecting sleeve 311 are connected by a snap-fit ​​to achieve quick assembly and disassembly. Specifically, two snap-fit ​​blocks 3112 are evenly distributed around the outer circumference of the connecting sleeve 311, and two corresponding snap-fit ​​grooves 3123 are provided on the inner sidewall of the housing sleeve 312; in other embodiments, the housing sleeve 312 and the connecting sleeve 311 can also be connected by screw threads to improve strength.

[0069] The hardness of the aforementioned housing sleeve 312 can be 60~70 D or 95~100 A, which is slightly less than that of the connecting sleeve 311. It can balance impact resistance and flexible wiring. The material can be PC-ABS, PC-ASA, PA66+GF, etc.

[0070] In some embodiments, two horizontal connectors are also included; in other embodiments, more may be provided.

[0071] Reference Figure 5 The aforementioned connecting sleeve 311 and frustum section 320 are divided into two symmetrical parts, each part including half of the connecting sleeve 311 and half of the frustum section 320; one end of each of the aforementioned reinforcing posts 321 is fixed to the inner wall of the half of the frustum section 320, and the other end is provided with a first horizontal connecting hole 61. The other half of the frustum section 320 is provided with two second horizontal connecting holes 62 corresponding to the two first horizontal connecting holes 61 respectively, such as... Figure 2 As shown; each of the above-mentioned horizontal connectors passes through the corresponding second horizontal connecting hole 62 and the first horizontal connecting hole 61 in sequence, and is fixed to the corresponding reinforcing post 321.

[0072] Understandably, the connecting sleeve 311 is a symmetrical split structure that can directly cover the junction of the connecting section 21 and the main body 22 from the side, making it easier to maintain and replace. Each part includes half of the connecting sleeve 311 and half of the frustum section 320. Specifically, the half of the connecting sleeve 311 and half of the frustum section 320 are an integral structure, forming a longitudinal rigid shell to avoid cracks or loosening at the interface. The reinforcing column 321 is used for both reinforcement and connection, further enhancing strength. The connecting sleeve 311 can be separated by removing the horizontal connecting piece without affecting other components.

[0073] In some embodiments, two vertical connectors are also included; in other embodiments, more may be provided.

[0074] Reference Figure 3 The inner wall of the connecting sleeve 311 is provided with two convex, circumferentially distributed limiting posts 3111, the axis of the limiting posts 3111 being parallel to the axis of the connecting sleeve 311. The outer wall of the connecting section 21 is provided with two cylindrical grooves respectively adapted to the two limiting posts 3111. Each of the limiting posts 3111 has a first vertical connecting hole 63 at its upper end, and the housing sleeve 312 has two second vertical connecting holes 64 respectively corresponding to the two first vertical connecting holes 63. Figure 4 As shown, each vertical connector passes through the corresponding second vertical connecting hole 64 and the first vertical connecting hole 63 in sequence, and is fixed to the corresponding limiting post 3111.

[0075] Understandably, the limiting post 3111 is used to engage / fit with the cylindrical groove on the outer wall of the connecting section 21 to achieve positioning and prevent rotation; the vertical connector is used to fix the connecting sleeve 311 and the connecting section 21 and to prevent axial movement.

[0076] In some embodiments, refer to Figure 5 Each of the aforementioned limiting posts 3111 has its lower end mounted on the reinforcing ring 313, so that the vertical load is distributed and transmitted from the connecting sleeve 311 to the limiting post 3111, the reinforcing ring 313, and the main body 22 of the extension bracket 20 in sequence, thereby improving the overall strength.

[0077] The thickness of the aforementioned reinforcing ring 313 is 2~3 mm to ensure support rigidity.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. For those skilled in the art, modifications can be made to the specific technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions protected by the present invention.

Claims

1. An antenna assembly for a self-moving device, comprising an antenna cover (10) and an extension bracket (20), wherein an antenna body is disposed inside the antenna cover (10), the upper end of the extension bracket (20) is connected to the antenna cover (10), the lower end is used to connect to the self-moving device, and a first through hole is provided on the extension bracket (20) extending vertically. characterized in that It also includes a connecting assembly (300) disposed at the connection between the radome (10) and the extension bracket (20); The connecting assembly (300) is a shell with an open bottom. The connecting assembly (300) includes a cylindrical section (310) and a frustum section (320) that are connected from top to bottom and sleeved on the outer periphery of the upper end of the extension bracket (20). The outer diameter of the cylindrical section (310) is equal from top to bottom, and the outer diameter of the frustum section (320) decreases from top to bottom. The top surface of the cylindrical section (310) is provided with a second through hole (3121) that communicates with the first through hole. The second through hole (3121) and the first through hole form a cable through hole for passing through the cable (010) connecting the antenna body and the self-moving device. The hardness of the extension bracket (20) is less than that of the radome (10).

2. The antenna assembly for a self-moving device according to claim 1, characterized in that: The extension bracket (20) includes a connecting section (21) and a main body (22) connected sequentially from top to bottom; The outer diameter of the connecting section (21) is equal from top to bottom; The outer diameter of the main body (22) increases from top to bottom, and the radial cross section is circular; The cylindrical segment (310) and the frustum segment (320) are respectively fitted onto the outer periphery of the upper end of the connecting segment (21) and the main body (22).

3. The antenna assembly for a self-moving device according to claim 2, characterized in that: The outer diameter of the upper end of the main body (22) is smaller than the outer diameter of the connecting section (21), and the outer wall of the upper end of the main body (22) and the lower end face of the connecting section (21) form an outer stepped surface (23); The inner wall of the cylindrical section (310) is provided with a reinforcing ring (313), and the top surface and inner circumference of the reinforcing ring (313) are respectively fitted with the outer step surface (23) and the upper outer wall of the main body (22) with clearance.

4. The antenna assembly of a self-moving device according to claim 3, characterized in that: At least one reinforcing column (321) is provided on the inner wall of the frustum section (320) perpendicular to the axis of the main body (22). Each reinforcing column (321) is connected to the inner wall of the frustum section (320) at both ends and passes through the first through hole in the middle.

5. An antenna assembly for a self-moving device according to claim 4, characterized in that: The cylindrical section (310) includes a connecting sleeve (311) and a housing sleeve (312) coaxially sleeved on the connecting sleeve (311); The housing sleeve (312) is a housing with an opening at the lower end, and the top surface is provided with the second through hole (3121). The axial length of the housing sleeve (312) is less than the axial length of the connecting sleeve (311).

6. The antenna assembly of a self-moving device according to claim 5, characterized in that: It also includes multiple horizontal connectors; The connecting sleeve (311) and the frustum section (320) are divided into two symmetrical parts, each part including half of the connecting sleeve (311) and half of the frustum section (320); Each of the reinforcing columns (321) has one end fixed to the inner wall of a half-frustum section (320), and the other end is provided with a first horizontal connecting hole (61). The other half-frustum section (320) is provided with a plurality of second horizontal connecting holes (62) corresponding to the plurality of first horizontal connecting holes (61). Each of the horizontal connectors passes through the corresponding second horizontal connection hole (62) and first horizontal connection hole (61) in sequence and is fixed to the corresponding reinforcing post (321).

7. The antenna assembly for a self-moving device according to claim 6, characterized in that: It also includes multiple vertical connectors; The inner wall of the connecting sleeve (311) is provided with a plurality of convex and circumferentially distributed limiting posts (3111), the axis of the limiting posts (3111) is parallel to the axis of the connecting sleeve (311), and the outer wall of the connecting section (21) is provided with a plurality of cylindrical grooves that are adapted to the plurality of limiting posts (3111). Each of the limiting posts (3111) is provided with a first vertical connecting hole (63) at its upper end. The housing sleeve (312) is provided with a plurality of second vertical connecting holes (64) corresponding to the plurality of first vertical connecting holes (63). Each vertical connector passes through the corresponding second vertical connecting hole (64) and the first vertical connecting hole (63) in sequence and is fixed to the corresponding limiting post (3111).

8. An antenna assembly for a self-moving device according to claim 7, characterized in that: The lower end of each of the limiting posts (3111) is disposed on the reinforcing ring (313).

9. An antenna assembly for a self-moving device according to claim 7, characterized in that: The upper inner diameter of the main body (22) is smaller than the inner diameter of the connecting section (21), and the upper end face of the main body (22) and the inner wall of the connecting section (21) form an inner step surface (24); a limiting member (5) is provided on the inner step surface (24) to limit the position of the cable (010) in the cable through hole; The housing sleeve (312) has a downwardly protruding annular pressure block (3122) on the outer periphery of the first through hole, and the annular pressure block (3122) abuts against the limiting member (5).

10. A self-moving device characterized by: Includes a device housing and an antenna assembly of any of the self-moving devices according to claims 1 to 9 disposed on the outer wall of the device housing.

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