Reference station

Abstract

The present application specifically relates to a reference station, which is used for solving the problems of existing reference stations in courtyard robot positioning applications, such as poor environmental adaptability, insufficient structural safety and inconvenient installation. The reference station comprises a data center module, an external connection structure and a vertical pole structure, wherein the external connection structure is arranged on the data center module, and the external connection structure is electrically connected to the data center module; the external connection structure is arranged at an end of the vertical pole structure, and the external connection structure is electrically connected to the vertical pole structure; and the vertical pole structure is a conductor, the vertical pole structure has a grounding point, and the grounding point is used for grounding. In the present application, a data center module is grounded by means of a vertical pole structure, and a grounding point can be in direct contact with the ground or connected to an external ground wire, thereby implementing a grounding function of a reference station.

Description

Base station Technical Field

[0001] This application relates to the field of mobile device positioning technology, specifically to a base station. Background Technology

[0002] GNSS (Global Navigation Satellite System) Real-Time Kinematic (RTK) technology is a real-time dynamic positioning technique based on carrier phase observations. It provides real-time three-dimensional positioning results of a measurement station in a specified coordinate system. An RTK system typically consists of a base station and a rover. The base station receives satellite signals and calculates correction data, while the rover receives both satellite signals and the base station's correction data to achieve high-precision positioning. This technology can be applied to the positioning of self-moving devices such as garden robots, where the self-moving device acts as the rover.

[0003] In related technologies, a data center module with an RTK antenna needs to be installed as a base station in the external environment of the self-moving device to achieve accurate positioning. Existing base stations for yard robot positioning applications suffer from poor environmental adaptability, insufficient structural safety, and inconvenient installation. Specifically: the base station needs to be erected outdoors for extended periods, making it susceptible to lightning strikes during thunderstorms, which can damage internal circuitry; the data center module casing does not effectively prevent rain and snow accumulation, posing a risk of water ingress; and the pole structure designed to ensure communication quality is complex to assemble and disassemble, and inconvenient to use, affecting user deployment efficiency and experience. These issues collectively limit the reliability and usability of the base station in real-world scenarios and urgently require improvement. Summary of the Invention

[0004] In view of this, this application provides a reference station to solve the problems of poor environmental adaptability, insufficient structural safety and inconvenient installation of existing reference stations in the application of yard robot positioning.

[0005] To achieve one or more of the above objectives or other objectives, this application proposes a base station, including a data center module, an external structure, and a pole structure; the external structure is disposed on the data center module and electrically connected to the data center module; the external structure is disposed at one end of the pole structure and electrically connected to the pole structure; the pole structure is a conductor and has a grounding point for grounding.

[0006] [Corrected according to Rule 91, 27.03.2026] In an optional embodiment, the pole structure includes a connector, a connecting rod assembly, and a mounting base that are electrically connected in sequence; the connector is disposed on the external structure; one end of the connecting rod assembly is detachably connected to the connector, and the other end of the connecting rod assembly is connected to the mounting base; the grounding point is located on the mounting base and / or the connecting rod assembly.

[0007] In an optional embodiment, a sixth locking member is provided between the mounting base and the connecting rod assembly for locking, and current can pass through the connecting rod assembly, the sixth locking member and the mounting base in sequence, wherein the mounting base and / or the sixth locking member is the grounding point.

[0008] In an optional embodiment, the connecting rod assembly includes a first rod, an adapter, and a second rod that are electrically connected in sequence; one end of the first rod is detachably connected to the connector, the other end of the first rod is detachably connected to one end of the adapter, the other end of the adapter is detachably connected to one end of the second rod, and the other end of the second rod is connected to the mounting base; the grounding point is located on the mounting base and / or the second rod.

[0009] In an optional embodiment, a third locking member is provided between the connector and the first rod body for locking; a fourth locking member is provided between the first rod body and the adapter for locking; and a fifth locking member is provided between the adapter and the second rod body for locking; the current can pass sequentially through the connector, the third locking member, the first rod body, the fourth locking member, the adapter, the fifth locking member, and the second rod body.

[0010] In an optional embodiment, the connector is snap-fitted to the first rod; the first rod is snap-fitted to the adapter; and the adapter is snap-fitted to the second rod. The third, fourth, and fifth locking members each include a spring-loaded latch and a latching seat, which are linearly and elastically snapped together. One end of the first rod and one of the connectors have the spring-loaded latch, and the other has a corresponding latching seat. One end of the first rod and one end of the connector have the spring-loaded latch, and the other has a corresponding latching seat. One end of the connector and one end of the second rod have the spring-loaded latch, and the other has a corresponding latching seat.

[0011] In an optional embodiment, the snap fastener includes an elastic element, a ball, and a first tube segment; the elastic element is capable of elastic deformation and is disposed within the first tube segment; the ball is connected to one end of the elastic element; the first tube segment has a ball hole through which the ball protrudes; the elastic element pushes the ball towards the ball hole; the buckle seat includes a second tube segment with a buckle hole; the second tube segment is fitted around the outer periphery of the first tube segment; and the ball can be snapped into the buckle hole.

[0012] In one optional embodiment, a wire passage is formed within the pole structure, with an inlet and an outlet at each end of the wire passage, and the inlet and outlet are located at opposite ends of the pole structure.

[0013] In an optional embodiment, the two axial ends of the adapter are a first adapter end and a second adapter end, respectively, and a third adapter end is also formed on the adapter. The third adapter end and the first adapter end have an included angle, which is one of a right angle, an acute angle, and an obtuse angle. The first adapter end, the second adapter end, and the third adapter end are all used for linear snap-fit ​​connection with the first rod body and the second rod body. The first adapter end, the second adapter end, and the third adapter end are internally interconnected.

[0014] In one optional embodiment, a wire-passing groove is formed on the side wall of the adapter, and the wire-passing groove extends in three directions toward the first adapter end, the second adapter end and the third adapter end until it connects to the outside.

[0015] In one alternative embodiment, the external structure includes an adapter plate and a first locking member, the first locking member locking the adapter plate to the data center module.

[0016] In an optional embodiment, a second locking member is provided between the connector and the adapter plate for locking, and the current can pass sequentially through the data center module, the first locking member, the adapter plate, the second locking member and the connector.

[0017] In one optional embodiment, the data center module includes a housing, a circuit board, and a conductive element; the conductive element is mounted on the housing and connected to the external structure; the circuit board is disposed inside the housing; and the circuit board, the conductive element, and the external structure are electrically connected in sequence.

[0018] In one optional embodiment, the housing includes a shell and a cover that overlap each other along the front-to-back direction; the cover extends along the vertical direction; the shell includes a first vertical wall and a guide wall, the first vertical wall being parallel to the cover, the first vertical wall having a smaller dimension in the vertical direction than the cover, and the first vertical wall having a smaller dimension in the left-to-right direction than the cover; the outer edge of the first vertical wall extends toward the outer edge of the cover to form the guide wall; the guide wall gradually converges toward the first vertical wall; the antenna passes through the guide wall and extends to the outside.

[0019] In an optional embodiment, a first receiving cavity wall is formed on the guide wall, the first receiving cavity wall smoothly transitions with the guide wall, and a first receiving cavity is formed inside the first receiving cavity wall; the first receiving cavity wall includes a first arc-shaped sidewall and a first top wall; the first arc-shaped sidewall extends arc-shaped in the horizontal direction, the first top wall is disposed at the top of the first arc-shaped sidewall, and the first top wall and the first arc-shaped sidewall surround each other to form the first receiving cavity; the first top wall gradually slopes downward in the front-to-back direction.

[0020] In an optional embodiment, the guide wall includes a top guide wall, a first side guide wall, a bottom guide wall, and a second side guide wall connected in a ring shape in sequence; the lower edge of the top guide wall is connected to the upper edge of the first vertical wall, and the top guide wall gradually slopes towards the upper edge of the cover; the right edge of the first side guide wall is connected to the left edge of the first vertical wall, and the first side guide wall gradually slopes towards the left edge of the cover; the left edge of the second side guide wall is connected to the right edge of the first vertical wall, and the second side guide wall gradually slopes towards the right edge of the cover; the bottom guide wall is connected to the first vertical wall.

[0021] In one optional embodiment, the top guide wall includes a second end face, a first end face, and a third end face connected sequentially from left to right; the first end face gradually slopes backward in the top-to-bottom direction; the second end face gradually slopes backward in the top-to-bottom direction and gradually slopes upward in the left-to-right direction; the third end face gradually slopes backward in the top-to-bottom direction and gradually slopes downward in the left-to-right direction.

[0022] In an optional embodiment, the guide wall further includes a first longitudinal wall and a second longitudinal wall; the left edge of the first side guide wall extends toward the left edge of the cover to form the first longitudinal wall; the right edge of the second side guide wall extends toward the right edge of the cover to form the second longitudinal wall; the top of the first longitudinal wall extends to the upper right to form a seventh end face, which is connected to the second end face; the top of the second longitudinal wall extends to the upper left to form an eighth end face, which is connected to the third end face; a first chamfer is formed at the top left end of the cover, and a second chamfer is formed at the top right end of the cover, the first chamfer being aligned with the front edge of the seventh end face. The second chamfer is aligned with the front edge of the eighth end face; the bottom guide wall includes a fifth end face, a fourth end face, and a sixth end face connected sequentially from left to right; the fourth end face is connected to the lower edge of the first vertical wall; the fifth end face gradually slopes downward from left to right; the sixth end face gradually slopes upward from left to right; a third chamfer is formed at the bottom left end of the cover, and a fourth chamfer is formed at the bottom right end of the cover, the third chamfer is aligned with the front edge of the fifth end face, and the fourth chamfer is aligned with the front edge of the sixth end face; the first vertical wall and the second vertical wall are recessed towards the interior of the shell to form a recessed portion.

[0023] In an optional embodiment, the cover includes a second vertical wall, which extends toward the left side of the housing to form a ninth end face and extends toward the right side of the housing to form a tenth end face; the ninth end face gradually slopes forward from left to right; and the tenth end face gradually slopes backward from left to right.

[0024] This application has the following beneficial effects:

[0025] This application utilizes a pole structure to ground the data center module. The grounding point can directly contact the ground or connect to an external ground wire, thus achieving the grounding function of the base station. When the base station is struck by lightning, the current is rapidly conducted to the ground through the pole structure, thereby reducing the potential difference inside the data center module and preventing the generation of destructive voltage. This effectively avoids the risk of lightning strikes damaging the internal electrical components of the data center module. On the other hand, the pole structure can elevate the data center module, ensuring better signal reception and transmission, and ensuring a better radio transmission path between the base station and the rover, enabling a longer operating distance. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a perspective view of a base station in an optional embodiment; Figure 2 is a perspective view of a pole structure in an optional embodiment; Figure 3 is an exploded view of a partial structure of the pole structure in an optional embodiment; Figure 4 is a perspective view of the pole structure in an optional embodiment; Figure 5 is a perspective view of a data center module in an optional embodiment; Figure 6 is an exploded view of a data center module in an optional embodiment; Figure 7 is an exploded view of a circuit board and conductive components in an optional embodiment; Figure 8 is a perspective view of a circuit board and conductive components in an optional embodiment; Figure 9 is a cross-sectional view of a data center module in an optional embodiment; Figure 10 is an exploded view of a connector and external structure in an optional embodiment; Figure 11 is a perspective view of an adapter in an optional embodiment; Figure 12 is a perspective view of the outer casing in an optional embodiment; Figure 13 is a perspective view of the outer casing in an optional embodiment; Figure 14 is a perspective view of the internal structure of a data center module in an optional embodiment; Figure 15 is a partial cross-sectional view of a partial structure of a data center module in an optional embodiment.

[0028] The reference numerals in the attached drawings are explained as follows: 01, Data center module; 1, Outer shell; 1a, Housing; 11, Conductive hole; 12, Clamping tooth; 11a, First vertical wall; 12a, Guide wall; 121a, Top guide wall; 1211a, First end face; 1212a, Second end face; 1213a, Third end face; 122a, First side guide wall; 123a, Second side guide wall; 124a, Bottom guide wall; 1241a, Fourth end face; 1242a, Fifth end face; 1243a, Sixth end face; 125a, First longitudinal wall; 1251a, Seventh end face; 126a, Second longitudinal wall; 12 52a, Eighth end face; 13a, Recess; 14a, Inclined hole wall; 15a, Male buckle; 1b, Cover; 11b, Second vertical wall; 12b, Ninth end face; 13b, Tenth end face; 14b, First chamfer; 15b, Second chamfer; 16b, Third chamfer; 17b, Fourth chamfer; 18b, Female buckle; 131, First accommodating cavity wall; 1311, First arc-shaped side wall; 1312, First top wall; 132, Second accommodating cavity wall; 1321, Second arc-shaped side wall; 133, Third accommodating cavity wall; 1331, Third arc-shaped side wall; 2, Circuit board; 3, Antenna; 14, First seal 1. Circle; 151. First accommodating cavity; 152. Second accommodating cavity; 153. Third accommodating cavity; 2. Circuit board; 21. Varistor; 3. Antenna; 4. Conductor; 41. Heat dissipation grille; 42. First conductive hole; 43. Second conductive hole; 44. Locking hole; 5. Internal passage structure; 51. First conductive component; 52. Wire; 53. Second conductive component; 6. External structure; 61. Adapter plate; 611. Locking through hole; 62. First locking component; 7. Upright structure; 70. Wire passage; 701. Wire inlet; 702. Wire outlet; 7021. First outlet hole; 7022. Second outlet hole ; 71. Second locking element; 72. Connector; 73. Connecting rod assembly; 731. First rod body; 732. Second rod body; 733. Adapter; 7331. First adapter end; 7332. Second adapter end; 7333. Third adapter end; 7334. Wire through groove; 74. Third locking element; 75. Mounting base; 751. Assembly hole; 76. Fourth locking element; 77. Fifth locking element; 78. Sixth locking element; 791. Spring buckle part; 7911. Elastic element; 7912. Tumbler; 7913. First pipe section; 7914. Tumbler hole; 792. Buckle hole; 710. Locking connector. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] As shown in Figure 1, an embodiment of this application provides a reference station, including a data center module 01, an external structure 6, and a pole structure 7. The data center module 01 receives satellite signals and calculates correction data. The external structure 6 is mounted on the data center module 01 and is electrically connected to it. This electrical connection means that current can be directly or indirectly conducted between the data center module 01 and the external structure 6. The external structure 6 is located at one end of the pole structure 7 and is electrically connected to it. This electrical connection means that current can be directly or indirectly conducted between the external structure 6 and the pole structure 7. The pole structure 7 is a conductor and has grounding points for grounding. There can be one or more grounding points. The grounding points can directly contact the ground, and / or allow users to connect an external ground wire to achieve grounding. In this embodiment, the data center module 01 is grounded through the pole structure 7. The grounding point can be directly in contact with the ground, or / and can also be connected to the external ground wire to realize the grounding function of the base station. When the base station is struck by lightning, the current is quickly conducted to the ground through the pole structure 7, thereby reducing the potential difference inside the data center module 01, avoiding the generation of destructive voltage, and effectively avoiding the risk of lightning strikes damaging electrical components inside the data center module 01, such as the circuit board 2.

[0031] On the other hand, the pole structure 7 can elevate the data center module 01 to ensure better signal reception and transmission, and ensure a better radio transmission path between the base station and the rover, enabling a longer operating distance.

[0032] To facilitate the packaging and transportation of the base station, the pole structure 7 can be detachable. In some alternative embodiments, referring to Figures 1 to 5, the pole structure 7 includes a connector 72, a connecting rod assembly 73, and a mounting base 75 that are electrically connected in sequence. The electrical connection here refers to the direct or indirect conduction of current between the connector 72, the connecting rod assembly 73, and the mounting base 75.

[0033] The connector 72 is mounted on the external structure 6. One end of the connecting rod assembly 73 is detachably connected to the connector 72, and the other end of the connecting rod assembly 73 is connected to the mounting base 75. The grounding point is located on the mounting base 75 and / or the connecting rod assembly 73.

[0034] In some alternative embodiments, as shown in Figures 1, 2, and 4, a sixth locking element 78 is provided between the mounting base 75 and the connecting rod assembly 73 for locking. Current can pass sequentially through the connecting rod assembly 73, the sixth locking element 78, and the mounting base 75. The mounting base 75 and / or the sixth locking element 78 serve as grounding points. The sixth locking element 78 may be, but is not limited to, components such as screws.

[0035] As an optional example, as shown in Figures 1 and 2, the bottom surface of the mounting base 75 can serve as a grounding point. The bottom surface of the mounting base 75 directly contacts the ground to achieve grounding. The current on the data center module 01 can be conducted to the ground through the external structure 6, the connector 72, the connecting rod group 73 and the mounting base 75 in sequence.

[0036] As another alternative example, as shown in Figures 1, 2 and 4, when the sixth locking member 78 is used as a grounding point, the user can connect the sixth locking member 78 with an external ground wire.

[0037] To facilitate the packaging and transportation of the base station, the pole structure 7 can adopt a multi-segment structure. In some optional embodiments, as shown in Figures 1 to 4, the connecting rod assembly 73 includes a first rod 731, an adapter 733, and a second rod 732 that are electrically connected in sequence. One end of the first rod 731 is detachably connected to the connector 72, the other end of the first rod 731 is detachably connected to one end of the adapter 733, the other end of the adapter 733 is detachably connected to one end of the second rod 732, and the other end of the second rod 732 is connected to the mounting base 75. The grounding point is located on the mounting base 75 and / or the second rod 732. The multi-segment pole structure 7 can reduce packaging volume and transportation costs. The number of rods in the connecting rod assembly 73 and the number of adapters 733 can be configured according to actual needs.

[0038] Optionally, different included angles between the first pole 731 and the second pole 732 can be used to adapt to different installation environments. As an example, as shown in Figure 2, the included angle between the first pole 731 and the second pole 732 can be a straight angle, and the entire pole structure 7 is in a straight line state, allowing the base station to be installed vertically on flat ground such as a lawn. As another example, as shown in Figure 4, the included angle between the first pole 731 and the second pole 732 can be a right angle, and the entire pole structure 7 is in a bent state, allowing the base station to be installed on a wall or under an eave. The above are only examples of installation scenarios, and can also be applied to other scenarios, which will not be elaborated here. The included angle between the first pole 731 and the second pole 732 can also be other angles, which will not be elaborated here.

[0039] To facilitate the relative fixation of the base station with the external environment, several mounting holes 751 can be opened on the mounting base 75, and screws and the like can be installed in the mounting holes 751 to fix the mounting base 75 to external objects such as lawns.

[0040] In some alternative embodiments, a third locking member 74 is provided between the connector 72 and the first rod 731 for locking. A fourth locking member 76 is provided between the first rod 731 and the adapter 733 for locking. A fifth locking member 77 is provided between the adapter 733 and the second rod 732 for locking. Current can pass sequentially through the connector 72, the third locking member 74, the first rod 731, the fourth locking member 76, the adapter 733, the fifth locking member 77, and the second rod 732.

[0041] To facilitate installation and disassembly by the user, in some optional embodiments, please refer to Figures 1, 3, and 6, the connector 72 is snap-fitted to the first rod 731. The first rod 731 is snap-fitted to the adapter 733. The adapter 733 is snap-fitted to the second rod 732.

[0042] As an optional example, as shown in Figures 3 and 6, the connector 72 and the first rod 731 are connected by a spring-loaded snap-fit ​​connection. The connector 72 is provided with a spring-loaded snap part 791, and the first rod 731 has a snap-fit ​​hole 792. The spring-loaded snap part 791 can be snapped into the snap-fit ​​hole 792 to achieve quick insertion. Similarly, the first rod 731 and the adapter 733, and the adapter 733 and the second rod 732 can also adopt the above-mentioned spring-loaded snap-fit ​​connection method, which will not be elaborated here.

[0043] As an optional example, as shown in Figures 3, 6, and 10, the third locking member 74, the fourth locking member 76, and the fifth locking member 77 each include a spring-loaded latch portion 791 and a latching seat portion, with the latching hole 792 disposed on the latching seat portion; the spring-loaded latch portion 791 and the latching seat portion are linearly elastically engaged. One end of the first rod body (731) and one of the connector 72 are provided with the spring-loaded latch portion (791), and the other is provided with the corresponding latching seat portion; one end of the first rod body (731) and one end of the connector (2) are provided with the spring-loaded latch portion (791), and the other is provided with the corresponding latching seat portion; one end of the connector (2) and one end of the second rod body 732 are provided with the spring-loaded latch portion (791), and the other is provided with the corresponding latching seat portion.

[0044] In some alternative embodiments, as shown in Figures 3, 6, and 10, the spring-loaded buckle 791 includes an elastic element 7911, a ball 7912, and a first tube segment 7913. The elastic element 7911 is capable of elastic deformation and is disposed within the first tube segment 7913. The ball 7912 is connected to one end of the elastic element 7911. The first tube segment 7913 has a ball hole 7914 through which the ball 7912 protrudes, and the elastic element 7911 pushes the ball 7912 towards the ball hole 7914. The buckle seat includes a second tube segment with a buckle hole 792. The second tube segment is fitted around the outer periphery of the first tube segment 7913, and the ball 7912 can be snapped into the buckle hole 792.

[0045] For example, when the connector 72 is provided with a spring-loaded buckle 791, the end of the connector 72 connected to the first rod 731 serves as the first pipe segment 7913, and the end of the first rod 731 connected to the connector 72 serves as the second pipe segment.

[0046] The elastic element 7911 can be, but is not limited to, a torsion spring, an elastic pressure plate, or other elastic components. For example, the elastic element 7911 is a torsion spring, which is U-shaped, and a ball 7912 is provided at one end of the torsion spring. The ball 7912 can be, but is not limited to, hemispherical, bullet-shaped, or cylindrical.

[0047] In some alternative embodiments (not shown in the figures), the third locking member 74, the fourth locking member 76, and the fifth locking member 77 may also include a snap-fit ​​portion and a slot portion. The snap-fit ​​portion includes a third pipe section and a snap-fit. The snap-fit ​​includes a deformation plate and a buckle disposed at the end of the deformation plate. The deformation plate is disposed on the third pipe section and can deform in the axial direction under the action of external force. The slot portion includes a fourth pipe section, and a slot is recessed on the fourth pipe section, into which the buckle can be snapped.

[0048] Optionally, to improve the stability of the upright structure 7, the third locking member 74, the fourth locking member 76, and the fifth locking member 77 may each include a locking connector. The locking connector can further secure the upright structure 7 based on the spring-loaded part 791 and the buckle seat, thus improving its stability. This solution allows users to choose whether to install it, offering a high degree of freedom. The locking connector can be a screw or a pin, etc.

[0049] To facilitate centralized storage of cables such as network cables, in some optional embodiments, as shown in Figures 1 and 3, a cable passage 70 is formed within the pole structure 7. The cable passage 70 has an inlet 701 and an outlet 702 at its two ends, located at opposite ends of the pole structure 7. Cables on the data center module 01 pass through the inlet 701 into the cable passage 70 and exit through the outlet 702, facilitating centralized cabling.

[0050] Optionally, as shown in Figure 1, the bottom of the mounting base 75 may have a first outlet hole 7021 as a cable outlet 702. The second rod 732 may have a second outlet hole 7022 as a cable outlet 702. Cable outlets 702 in different directions can be adapted to different installation environments, expanding the environmental adaptability range of the base station.

[0051] In some alternative embodiments, as shown in FIG11, the two axial ends of the adapter 733 are a first adapter end 7331 and a second adapter end 7332, respectively. A third adapter end 7333 is also formed on the adapter 733. The third adapter end 7333 and the first adapter end 7331 have an included angle, which is one of a right angle, an acute angle, and an obtuse angle. The first adapter end 7331, the second adapter end 7332, and the third adapter end 7333 are all used for linear snap-fit ​​connection with the connecting rod 73. The first adapter end 7331, the second adapter end 7332, and the third adapter end 7333 are internally interconnected. The adapter 733 is provided with three adapter ends in different directions, which allows the user to adjust the angle between the first rod 731 and the second rod 732 according to their own needs, so as to adapt to more installation environments. For example, there are two connecting rods 73 and one adapter 733. With this configuration, there can be two installation angles between the first rod 731 and the second rod 732.

[0052] In some alternative embodiments, as shown in FIG4, the pole structure 7 further includes a cap for linear snap-fit ​​connection of any one of the three adapter ends 7331, 7332, and 7333. The adapter 733 has three adapter ends in different directions. When an adapter end is not involved in the connection, it can be secured with the cap, which can be used for dust and water protection.

[0053] In some optional embodiments, as shown in FIG11, a wire-passing groove 7334 is formed on the side wall of the adapter 733. The wire-passing groove 7334 extends in three directions toward the first adapter end 7331, the second adapter end 7332, and the third adapter end 7333 until it connects to the outside. The wire-passing groove 7334 is used to allow external wires to pass through and be inserted into the adapter 733, which facilitates wiring by the user and improves the user experience.

[0054] As shown in Figure 10, in order to facilitate user wiring, the connector 72 is provided with a wire inlet groove 721, which extends axially until it connects to the outside.

[0055] In some alternative embodiments, as shown in Figures 5 and 6, the external structure 6 includes an adapter plate 61 and a first locking member 62, which locks the adapter plate 61 to the data center module 01.

[0056] In some alternative embodiments, as shown in Figures 5 and 6, a second locking member 71 is provided between the connector 72 and the adapter plate 61 for locking, and the current can pass through the data center module 01, the first locking member 62, the adapter plate 61, the second locking member 71 and the connector 72 in sequence.

[0057] In some alternative embodiments, referring to Figures 6 to 9, the data center module 01 includes a housing 1, a circuit board 2, and a conductive component 4. The conductive component 4 is mounted on the housing 1 and connected to an external structure 6. The circuit board 2 is disposed inside the housing 1. The circuit board 2, the conductive component 4, and the external structure 6 are electrically connected in sequence. The circuit board 2 can be designed with its own lightning protection circuit according to actual needs. For example, a varistor 21 can be used as the protection design.

[0058] When the base station is struck by lightning, the current on the circuit board 2 is quickly conducted to the ground through the conductive component 4, the external structure 6, and the pole structure 7.

[0059] Several antennas 3 can be installed inside the outer casing 1, and the antennas 3 are electrically connected to the circuit board 2. To achieve the electrical connection between the circuit board 2 and the conductive component 4, in some optional embodiments, the circuit board 2 and the conductive component 4 are electrically connected by an internal pathway structure 5; the internal pathway structure 5 includes a first conductive component 51, a wire 52, and a second conductive component 53 connected in sequence; the first conductive component 51 is disposed on the circuit board 2, and the second conductive component 53 is disposed on the conductive component 4. Thus, during a lightning strike, the overload current on the circuit board 2 can be conducted to the ground sequentially through the first conductive component 51, the wire 52, the second conductive component 53, the conductive component 4, and the external structure 6, and then through the pole structure 7.

[0060] Optionally, the first conductive member 51 and the second conductive member 53 can be conductive members such as screws. The two ends of the wire 52 are equipped with forks. The first conductive member 51 can detachably press one end of the fork of the wire 52 onto the circuit board 2, and the second conductive member 53 can detachably press the other end of the fork of the wire 52 onto the conductive member 4. In this way, it is convenient to install and remove the circuit board 2, the internal passage structure 5, and the conductive member 4.

[0061] Other structures can be used for the internal passage structure 5, as long as they can achieve electrical connection between the circuit board 2 and the conductive component 4, which will not be elaborated here.

[0062] To improve the safety performance of the base station, the outer surface of the conductive component 4 and / or the adapter plate 61 is covered with an insulating layer. This serves two purposes: firstly, it prevents users from being stimulated by static electricity generated inside the base station upon contact, thus improving safety and stability; secondly, when the conductive component 4 and / or the adapter plate 61 are made of metal, the insulating layer prevents oxidation and rust, providing protection and extending the base station's service life. It should be noted that the electrical connection between the conductive component 4 and / or the adapter plate 61 remains conductive and is unaffected by the insulating layer.

[0063] Optionally, the conductive element 4 and / or the adapter plate 61 may be surface-treated to cover an insulating layer. As an example, the conductive element 4 and / or the adapter plate 61 may be manufactured using a two-stage injection molding process, wherein the conductive element 4 and / or the adapter plate 61 itself is a metal part, and an insulating layer such as a plastic layer or an adhesive layer is formed on the outer layer.

[0064] As an optional example, a first conductive hole 42 is formed on the side of the conductive member 4 facing the circuit board 2. A second conductive member 53 is detachably installed within the first conductive hole 42, and the wall of the first conductive hole 42 is not covered with an insulating layer. A second conductive hole 43 is formed on the side of the conductive member 4 facing the adapter plate 61. A locking through hole 611 adapted to the second conductive hole 43 is formed on the adapter plate 61. The first locking member 62 passes through the locking through hole 611 and is detachably assembled within the second conductive hole 43, and the wall of the second conductive hole 43 is not covered with an insulating layer. In this way, the conductive member 4 and the adapter plate 61 are relatively fixed, while simultaneously achieving electrical conduction between them.

[0065] To improve waterproofing, both the first conductive hole 42 and the second conductive hole 43 are non-through holes. For example, the first conductive hole 42 and / or the second conductive hole 43 are blind holes.

[0066] Optionally, as shown in Figure 6, the outer edge of the fixed through hole 611 is not covered with an insulating layer so as to allow it to contact the second conductive member 53 for conduction.

[0067] Optionally, the conductive element 4 is a heat conductor for heat dissipation. The conductive element 4 conducts heat, transferring the heat generated inside the outer casing 1, such as the circuit board 2, to the outside, improving the heat dissipation performance of the base station and preventing overheating that could lead to base station malfunction.

[0068] In some optional embodiments, as shown in FIG6, the conductive element 4 is plate-shaped, and the outer shell 1 has a conductive element hole 11, which is covered by the conductive element 4. One side of the conductive element 4 faces the circuit board 2, and the other side of the conductive element 4 faces the outside. The plate-shaped conductive element 4 can have a similar function to the outer shell 1, and cooperate with the outer shell 1 to wrap the circuit board 2 inside, providing protection. At the same time, it increases the heat dissipation area of ​​the conductive element 4. The overlap area between the conductive element 4 and the circuit board 2 is increased, and the area of ​​the conductive element 4 exposed to the outside is also increased, which is conducive to heat transfer and effectively enhances the heat dissipation effect without increasing the volume of the base station.

[0069] In some alternative embodiments, a plurality of locking holes 44 are formed on the outer periphery of the conductive member 4, and locking teeth 12 adapted to the locking holes 44 are formed around the holes 11 of the conductive member, and the locking teeth 12 are engaged into the locking holes 44.

[0070] To further improve the heat dissipation performance of the conductive element 4, in some optional embodiments, a heat dissipation grille 41 is formed on the side of the conductive element 4 facing the outside. The heat dissipation grille 41 can be, but is not limited to, strip-shaped, grid-shaped, fin-shaped, etc. The heat dissipation grille 41 can effectively increase the surface area of ​​the side of the conductive element 4 facing the outside, that is, increase the area for heat exchange with the outside, and effectively improve the heat dissipation effect.

[0071] In some alternative embodiments, as shown in FIG12, the outer casing 1 includes a shell 1a and a cover 1b that overlap each other in the front-to-back direction. The cover 1b extends in the vertical direction. The cover 1b can guide water flow vertically downward. The shell 1a includes a first vertical wall 11a and a guide wall 12a. The first vertical wall 11a is adjacent to the cover 1b, and the first vertical wall 11a is smaller in the vertical direction than the cover 1b, and the first vertical wall 11a is smaller in the left-to-right direction than the cover 1b. The outer edge of the first vertical wall 11a extends toward the outer edge of the cover 1b to form the guide wall 12a. The guide wall 12a gradually tapers toward the first vertical wall 11a.

[0072] This embodiment employs a guide wall 12a to direct water flow, concentrating the water towards the first vertical wall 11a. Under the influence of gravity, the water drips down along the first vertical wall 11a and the cover 1b, achieving rapid water diversion. This effectively prevents water accumulation in the outer casing 1 and avoids the situation where water slowly seeps into the data center module 01 through gaps due to long-term water accumulation. This optimizes the waterproof performance of the data center module 01 and solves the problem of water accumulation in the outer casing 1 of the data center module 01 in related technologies.

[0073] When users actually install the data center module 01, they may not be able to guarantee a completely vertical installation, and there may be a certain degree of angular deviation. In this case, the guide wall 12a can still guide the water flow, concentrating the water towards the first vertical wall 11a to achieve rapid flow guidance. The guide wall 12a gradually tapers towards the first vertical wall 11a, which can be achieved by gradually tapping with an arc-shaped curved surface, gradually tapping with an inclined plane, or a combination of the two.

[0074] To provide a better drainage effect, in some optional embodiments, referring to Figures 12 and 13, the guide wall 12a includes a top guide wall 121a, a first side guide wall 122a, a bottom guide wall 124a, and a second side guide wall 123a connected in a ring shape in sequence. The lower edge of the top guide wall 121a is connected to the upper edge of the first vertical wall 11a, and the top guide wall 121a gradually slopes towards the upper edge of the cover 1b, which can quickly drain the water accumulated at the top downwards and prevent water accumulation at the top. The right edge of the first side guide wall 122a is connected to the left edge of the first vertical wall 11a, and the first side guide wall 122a gradually slopes towards the left edge of the cover 1b, which can concentrate the water flow to the first vertical wall 11a or the left edge of the cover 1b, achieving rapid drainage. The left edge of the second guide wall 123a connects to the right edge of the first vertical wall 11a. The second guide wall 123a gradually slopes towards the right edge of the cover 1b, which can concentrate the water flow to the first vertical wall 11a or the right edge of the cover 1b, achieving rapid flow guidance. The bottom guide wall 124a is connected to the first vertical wall 11a.

[0075] Optionally, the top guide wall 121a includes a second end face 1212a, a first end face 1211a, and a third end face 1213a connected sequentially from left to right. The first end face 1211a gradually slopes backward in the top-to-bottom direction; the second end face 1212a gradually slopes backward in the top-to-bottom direction and gradually slopes upward in the left-to-right direction; the third end face 1213a gradually slopes backward in the top-to-bottom direction and gradually slopes downward in the left-to-right direction. The second end face 1212a, the first end face 1211a, and the third end face 1213a are used to concentrate and guide the water accumulated at the top of the housing 1 to the first vertical wall 11a.

[0076] In some alternative embodiments, the guide wall 12a further includes a first longitudinal wall 125a and a second longitudinal wall 126a, both arranged vertically. The left side of the first side guide wall 122a extends toward the left side of the cover 1b to form the first longitudinal wall 125a. The right side of the second side guide wall 123a extends toward the right side of the cover 1b to form the second longitudinal wall 126a. The top of the first longitudinal wall 125a extends to the upper right to form a seventh end face 1251a, which is connected to the second end face 1212a, allowing water to flow down the first longitudinal wall 125a for rapid drainage. The top of the second longitudinal wall 126a extends to the upper left to form an eighth end face 1252a, which is connected to the third end face 1213a, allowing water to flow down the second longitudinal wall 126a for rapid drainage. The top left end of the cover 1b has a first chamfer 14b and the top right end has a second chamfer 15b. The first chamfer 14b is aligned with the front edge of the seventh end face 1251a and the second chamfer 15b is aligned with the front edge of the eighth end face 1252a.

[0077] In some alternative embodiments, the bottom guide wall 124a includes a fifth end face 1242a, a fourth end face 1241a, and a sixth end face 1243a connected sequentially from left to right. The fourth end face 1241a is connected to the lower edge of the first vertical wall 11a; the fifth end face 1242a gradually slopes downward from left to right; and the sixth end face 1243a gradually slopes upward from left to right. A third chamfer 16b is formed at the bottom left end of the cover 1b, and a fourth chamfer 17b is formed at the bottom right end. The third chamfer 16b is aligned with the front edge of the fifth end face 1242a, and the fourth chamfer 17b is aligned with the front edge of the sixth end face 1243a. The fifth end face 1242a and the sixth end face 1243a are used to guide water flow from both sides of the housing 1 to the fourth end face 1241a, causing the water to drip downwards along it.

[0078] To facilitate user installation, the first longitudinal wall 125a and the second longitudinal wall 126a are recessed toward the inside of the housing 1a to form a recessed portion 13a, which can serve as a force application point for the user to hold or grip with a tool.

[0079] To minimize the volume of the outer casing 1 while accommodating internal component assembly space, in some optional embodiments, a first accommodating cavity wall 131 is formed protruding outward on the guide wall 12a. The first accommodating cavity wall 131 smoothly transitions with the guide wall 12a, forming a first accommodating cavity 151 inside for accommodating and mounting the antenna 3. This smooth transition design facilitates airflow.

[0080] The number of accommodating cavity walls can be set according to the number of antennas required by the data center module 01, for example, three: the first accommodating cavity wall 131 is located at the top of the guide wall 12a, the second accommodating cavity wall 132 is located on the left side of the guide wall 12a, and the third accommodating cavity wall 133 is located on the right side of the guide wall 12a. Antennas 3 are installed in the first accommodating cavity 151, the second accommodating cavity 152, and the third accommodating cavity 153. The first accommodating cavity wall 131 includes a first arc-shaped side wall 1311 and a first top wall 1312. The first arc-shaped side wall 1311 extends in an arc shape in the horizontal direction, and the first top wall 1312 is located at its top. The two surround each other to form the first accommodating cavity 151. The first top wall 1312 gradually slopes downward from front to back, which facilitates the water flow to the middle position of the first arc-shaped side wall 1311 to achieve rapid flow guidance. The second accommodating cavity wall 132 includes a second arcuate sidewall 1321 formed on the first side guide wall 122a, extending arcuately in the vertical direction, and connecting to the first longitudinal wall 125a on the left. The third accommodating cavity wall 133 includes a third arcuate sidewall 1331 formed on the second side guide wall 123a, extending arcuately in the vertical direction, and connecting to the second longitudinal wall 126a on the right. The cover 1b includes a second vertical wall 11b, extending from the left end to form a ninth end face 12b, and extending from the right end to form a tenth end face 13b. The ninth end face 12b gradually slopes forward from left to right, and the tenth end face 13b gradually slopes backward, for guiding water to the two sides of the cover 1b and dripping it off. A first sealing ring 14 can be provided between the shell 1a and the cover 1b to improve waterproof performance. A male snap fastener 15a is provided along the outer edge of the housing 1a, and a female snap fastener 18b is provided along the outer edge of the cover 1b. The male snap fastener 15a is fastened into the female snap fastener 18b, and the first sealing ring 14 is pressed between the two to improve the airtightness. A screw hole is provided on the housing 1a, and the hole wall is an inclined hole wall 14a, which is inclined downward to prevent water from seeping into the interior of the data center module 01 through the screw hole.

[0081] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A base station, wherein: It includes a data center module (01), an external structure (6), and a pole structure (7); the external structure (6) is disposed on the data center module (01) and is electrically connected to the data center module (01); the external structure (6) is disposed at one end of the pole structure (7) and is electrically connected to the pole structure (7); the pole structure (7) is a conductor and has a grounding point for grounding.

2. [According to Rule 91, Correction 27.03.2026] The base station as described in claim 1, wherein: The pole structure (7) includes a connector (72), a connecting rod assembly (73), and a mounting base (75) that are electrically connected in sequence; the connector (72) is disposed on the external structure (6); one end of the connecting rod assembly (73) is detachably connected to the connector (72), and the other end of the connecting rod assembly (73) is connected to the mounting base (75); the grounding point is located on the mounting base (75) and / or the connecting rod assembly (73).

3. The base station as described in claim 2, wherein: A sixth locking member (78) is provided between the mounting base (75) and the connecting rod group (73) for locking. Current can pass through the connecting rod group (73), the sixth locking member (78) and the mounting base (75) in sequence. The mounting base (75) and / or the sixth locking member (78) are the grounding points.

4. The base station as described in claim 2, wherein: The connecting rod assembly (73) includes a first rod (731), an adapter (733), and a second rod (732) that are electrically connected in sequence; one end of the first rod (731) is detachably connected to the connector (72), the other end of the first rod (731) is detachably connected to one end of the adapter (733), the other end of the adapter (733) is detachably connected to one end of the second rod (732), and the other end of the second rod (732) is connected to the mounting base (75); the grounding point is located on the mounting base (75) and / or the second rod (732).

5. The base station as described in claim 4, wherein: A third locking member (74) is provided between the connector (72) and the first rod (731) for locking; a fourth locking member (76) is provided between the first rod (731) and the adapter (733) for locking; a fifth locking member (77) is provided between the adapter (733) and the second rod (732) for locking; the current can pass through the connector (72), the third locking member (74), the first rod (731), the fourth locking member (76), the adapter (733), the fifth locking member (77) and the second rod (732) in sequence.

6. The base station as described in claim 5, wherein: The connector (72) is snapped together with the first rod (731); the first rod (731) is snapped together with the adapter (733); and the adapter (733) is snapped together with the second rod (732).

7. [According to Rule 91, Correction 27.03.2026] The base station as claimed in claim 6, wherein: The third locking member (74), the fourth locking member (76), and the fifth locking member (77) each include a spring-loaded buckle (791) and a buckle seat, which are linearly and elastically connected. One end of the first rod (731) and one of the connector (72) are provided with the spring-loaded buckle (791), and the other is provided with the buckle seat. One end of the first rod (731) and one end of the adapter (733) are provided with the spring-loaded buckle (791), and the other is provided with the buckle seat. One end of the adapter (733) and one end of the second rod (732) are provided with the spring-loaded buckle (791), and the other is provided with the buckle seat.

8. The base station as described in claim 7, wherein: The snap fastener (791) includes an elastic element (7911), a ball (7912), and a first tube section (7913). The elastic element (7911) is capable of elastic deformation and is disposed within the first tube section (7913). The ball (7912) is connected to one end of the elastic element (7911). The first tube section (7913) has a ball hole (7914), through which the ball (7912) protrudes. The elastic element (7911) pushes the ball (7912) towards the ball hole (7914). The buckle seat includes a second tube section with a buckle hole 792. The second tube section is fitted around the outer periphery of the first tube section (7913), and the ball (7912) can be snapped into the buckle hole 792.

9. The base station as described in claim 1, wherein: The pole structure (7) has a wire passage (70) inside, with the two ends of the wire passage (70) being the wire inlet (701) and the wire outlet (702), respectively, and the wire inlet (701) and the wire outlet (702) being located at the two ends of the pole structure (7).

10. [Correction 27.03.2026 according to Rule 91] The base station as claimed in claim 4, wherein: The adapter (733) has a first adapter end (7331) and a second adapter end (7332) at its two axial ends, respectively. A third adapter end (7333) is also formed on the adapter (733). The third adapter end (7333) and the first adapter end (7331) have an included angle, which is one of a right angle, an acute angle, and an obtuse angle. The first adapter end (7331), the second adapter end (7332), and the third adapter end (7333) are all used for linear snap-fit ​​connection with the first rod body 731 and the second rod body 732. The first adapter end (7331), the second adapter end (7332), and the third adapter end (7333) are internally interconnected.

11. [Correction 27.03.2026 according to Rule 91] The base station as claimed in claim 10, wherein: The adapter (733) has a wire through groove (7334) on its side wall. The wire through groove (7334) extends in three directions: the first adapter end (7331), the second adapter end (7332), and the third adapter end (7333) until it connects to the outside.

12. The base station as described in claim 2, wherein: The external structure (6) includes an adapter plate (61) and a first locking member (62), the first locking member (62) locking the adapter plate (61) to the data center module (01).

13. The base station as described in claim 12, wherein: A second locking member (71) is provided between the connector (72) and the adapter plate (61) for locking. Current can pass through the data center module (01), the first locking member (62), the adapter plate (61), the second locking member (71) and the connector (72) in sequence.

14. The base station as claimed in claim 1, wherein: The data center module (01) includes a housing (1), a circuit board (2), and a conductive element (4); the conductive element (4) is mounted on the housing (1) and connected to the external structure (6); the circuit board (2) is disposed inside the housing (1); the circuit board (2), the conductive element (4), and the external structure (6) are electrically connected in sequence.

15. The base station as described in claim 14, wherein: The outer casing (1) includes a shell (1a) and a cover (1b) that overlap each other in the front-to-back direction; the cover (1b) extends in the vertical direction; the shell (1a) includes a first vertical wall (11a) and a guide wall (12a), the first vertical wall (11a) is parallel to the cover (1b), the first vertical wall (11a) is smaller in the vertical direction than the cover (1b), and the first vertical wall (11a) is smaller in the left-to-right direction than the cover (1b); the outer edge of the first vertical wall (11a) extends toward the outer edge of the cover (1b) to form the guide wall (12a); the guide wall (12a) gradually converges toward the first vertical wall (11a); the antenna (3) passes through the guide wall (12a) and protrudes to the outside.

16. The base station as described in claim 15, wherein: A first receiving cavity wall (131) is formed on the guide wall (12a) with a protrusion. The first receiving cavity wall (131) and the guide wall (12a) are smoothly transitioned. A first receiving cavity (151) is formed inside the first receiving cavity wall (131). The first receiving cavity wall (131) includes a first arc-shaped side wall (1311) and a first top wall (1312). The first arc-shaped side wall (1311) extends in an arc shape in the horizontal direction. The first top wall (1312) is located at the top of the first arc-shaped side wall (1311). The first top wall (1312) and the first arc-shaped side wall (1311) surround each other to form the first receiving cavity (151). The first top wall (1312) gradually slopes downward in the front-to-back direction.

17. The base station as described in claim 15, wherein: The guide wall (12a) includes a top guide wall (121a), a first side guide wall (122a), a bottom guide wall (124a), and a second side guide wall (123a) connected in a ring in sequence; the lower edge of the top guide wall (121a) is connected to the upper edge of the first vertical wall (11a), and the top guide wall (121a) gradually slopes towards the upper edge of the cover (1b); the right edge of the first side guide wall (122a) is connected to the left edge of the first vertical wall (11a), and the first side guide wall (122a) gradually slopes towards the left edge of the cover (1b); the left edge of the second side guide wall (123a) is connected to the right edge of the first vertical wall (11a), and the second side guide wall (123a) gradually slopes towards the right edge of the cover (1b); the bottom guide wall (124a) is connected to the first vertical wall (11a).

18. The base station as claimed in claim 17, wherein: The top guide wall (121a) includes a second end face (1212a), a first end face (1211a), and a third end face (1213a) connected sequentially from left to right; the first end face (1211a) gradually slopes backward from top to bottom. The second end face (1212a) gradually tilts backward in the direction from top to bottom, and the second end face (1212a) gradually tilts upward in the direction from left to right; The third end face (1213a) gradually tilts backward from top to bottom, and the third end face (1213a) gradually tilts downward from left to right.

19. The base station as described in claim 18, wherein: The guide wall (12a) further includes a first longitudinal wall (125a) and a second longitudinal wall (126a); the left edge of the first side guide wall (122a) extends toward the left edge of the cover (1b) to form the first longitudinal wall (125a); the right edge of the second side guide wall (123a) extends toward the right edge of the cover (1b) to form the second longitudinal wall (126a); the top of the first longitudinal wall (125a) extends to the upper right to form a seventh end face (1251a), which is connected to the second end face (1212a); the top of the second longitudinal wall (126a) extends to the upper left to form an eighth end face (1252a), which is connected to the third end face (1213a). The top left end of the cover (1b) has a first chamfer (14b), and the top right end of the cover (1b) has a second chamfer (15b). The first chamfer (14b) is aligned with the front edge of the seventh end face (1251a), and the second chamfer (15b) is aligned with the front edge of the eighth end face (1252a). The bottom guide wall (124a) includes a fifth end face (1242a), a fourth end face (1241a), and a sixth end face (1243a) connected sequentially from left to right. The fourth end face (1241a) is connected to the lower edge of the first vertical wall (11a). The fifth end face (1242a) gradually slopes downward from left to right, and the sixth end face (1243a) gradually slopes upward from left to right. The bottom left end of the cover (1b) has a third chamfer (16b), and the bottom right end of the cover (1b) has a fourth chamfer (17b). The third chamfer (16b) is aligned with the front edge of the fifth end face (1242a), and the fourth chamfer (17b) is aligned with the front edge of the sixth end face (1243a). The first longitudinal wall (125a) and the second longitudinal wall (126a) are recessed toward the interior of the shell (1a) to form a recess (13a).

20. The base station as described in claim 15, wherein: The cover (1b) includes a second vertical wall (11b), which extends toward the left side of the shell (1a) to form a ninth end face (12b) and extends toward the right side of the shell (1a) to form a tenth end face (13b). The ninth end face (12b) gradually tilts forward from left to right; The tenth end face (13b) gradually tilts backward from left to right.

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