Wall climbing robot

Abstract

The utility model discloses a wall climbing robot which comprises a robot body, a connecting assembly, a rotary wing supporting arm and a locking assembly. The rotary wing supporting arm comprises a connecting section and a movable section, the movable section is rotatably arranged at one end of the connecting section through a connecting assembly, and the other end of the connecting section is installed on the aircraft body; the locking assembly is arranged on the machine body and located on the moving path of the moving section. When the wall climbing robot is stored or transported, a worker can drive the movable section to rotate relative to the connecting section so that the connecting section can move to be connected with the locking assembly, and at the moment, the locking assembly can lock and fix the connecting section; and the whole wall climbing robot can occupy a smaller space due to the fact that the rotary wing supporting arms are folded, so that the wall climbing robot is convenient to store or transport.

Description

Technical Field

[0001] This utility model relates to the field of robotics technology, and in particular to a wall-climbing robot. Background Technology

[0002] The wall-climbing robot consists of a body, a rotating wing support arm, and a rotating wing. The two ends of the rotating wing support arm are connected to the body and the rotating wing, respectively. When the rotating wing is working, it can provide lift to keep the wall-climbing robot levitating.

[0003] In related technologies, in order to reduce interference between the airframe and the rotor, the rotor support arm is generally set to be relatively long so that the rotor can be kept as far away from the airframe as possible.

[0004] Correspondingly, due to the long size of the rotary wing support arm, the overall size of the wall-climbing robot is large, making it less convenient to store or transport. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art. This invention provides a wall-climbing robot that is easy to store or transport.

[0006] The wall-climbing robot provided according to the embodiments of this utility model includes a body, a connecting component, a rotating wing support arm, and a locking component; the rotating wing support arm includes a connecting section and a movable section, the movable section is rotatably disposed at one end of the connecting section through the connecting component, and the other end of the connecting section is installed on the body; the locking component is disposed on the body and located on the movable path of the movable section, and the locking component can lock and fix the connecting section that fits against itself.

[0007] The wall-climbing robot of this utility model has at least the following beneficial effects: In the wall-climbing robot of this application, the movable segment is rotatably disposed at one end of the connecting segment via a connecting component, and a locking component is provided on the machine base, with the locking component located on the movable segment's movement path. When storing or transporting the wall-climbing robot of this application, the operator can drive the movable segment to rotate relative to the connecting segment, so that the connecting segment moves to connect with the locking component. At this time, the locking component can lock and fix the connecting segment. Furthermore, the wall-climbing robot as a whole occupies less space due to the folding of the rotating wing support arm, thus facilitating the storage or transportation of the wall-climbing robot.

[0008] According to the wall-climbing robot of the present invention, the locking component includes a locking clamp with a snap-fit ​​groove adapted to the movable section.

[0009] According to the wall-climbing robot of this utility model embodiment, the locking component further includes a mounting base, which is disposed on the body, and a locking clamp is rotatably disposed on the mounting base, wherein the rotation surface of the locking clamp is coplanar with the rotation surface of the movable section.

[0010] According to the wall-climbing robot of the present invention, the connecting component includes a first connecting structure and a second connecting structure. The first connecting structure and the second connecting structure are hinged together, and the first connecting structure and the second connecting structure are detachably connected to the connecting segment and the movable segment, respectively.

[0011] According to the wall-climbing robot of the present invention, the first connecting structure includes a first sleeve, and a connecting section passes through the inner cavity of the first sleeve; the second connecting structure includes a second sleeve, and a movable section passes through the inner cavity of the second sleeve, and the first sleeve and the second sleeve are hinged together.

[0012] According to the wall-climbing robot of the present utility model embodiment, the first connecting structure further includes a first clamp, and the cylinder wall of the first sleeve has a first gap extending along the length direction of the first sleeve. The first gap connects the outside world and the inner cavity of the first sleeve. The first clamp is sleeved on the first sleeve and is used to adjust the width of the first gap.

[0013] According to the wall-climbing robot of this utility model embodiment, the first sleeve is provided with a first hinge portion and a first abutment portion at one end near the second sleeve. The first hinge portion and the first abutment portion are respectively located on opposite sides of the central axis of the first sleeve. The second sleeve is provided with a second hinge portion and a second abutment portion at one end near the first sleeve. The second hinge portion and the second abutment portion are respectively located on opposite sides of the central axis of the second sleeve. The second hinge portion is hinged to the first hinge portion, and the second abutment portion is used to abut against the first abutment portion to prevent the first sleeve from continuing to rotate relative to the second sleeve in a direction away from the locking assembly.

[0014] According to the wall-climbing robot of the present invention, the first abutment part is provided with a protrusion, and the second abutment part is provided with a groove adapted to the protrusion.

[0015] According to the wall-climbing robot of the present invention, the connecting assembly further includes a locking structure, which is disposed on one of the first sleeve and the second sleeve. The locking structure can be connected to the other of the first sleeve and the second sleeve to achieve relative locking between the first sleeve and the second sleeve.

[0016] According to the wall-climbing robot provided in the embodiment of this utility model, the locking structure includes a locking sleeve with a first thread. The locking sleeve is slidably fitted onto a second sleeve. The first sleeve has a connecting part with a second thread that matches the first thread. Under the action of external force, the locking sleeve can slide along the second sleeve to partially fit onto the first sleeve, and the first thread and the second thread can mesh.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the structure of a wall-climbing robot according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of a partial structure of the wall-climbing robot shown.

[0021] Figure 3 for Figure 1 A schematic diagram of the locking assembly of the wall-climbing robot shown;

[0022] Figure 4 for Figure 1 A cross-sectional view of the connecting components of the wall-climbing robot shown.

[0023] Figure 5 for Figure 4 A partial enlarged view of the structure at point A of the connecting component shown;

[0024] Figure 6 for Figure 4 A partial enlarged view of the structure at point B of the connecting component shown.

[0025] Figure label:

[0026] Body 100;

[0027] Connecting assembly 200; first sleeve 210; first gap 211; first hinge 212; first abutment 213; protrusion 213a; connecting part 214; second thread 214a; fourth thread 215; second sleeve 220; second gap 221; second hinge 222; second abutment 223; groove 223a; first clamp 230; second clamp 240; locking structure 250; locking sleeve 251; first thread 251a; third thread 251b;

[0028] Rotary wing support arm 300; connecting section 310; movable section 320;

[0029] Locking assembly 400; locking clip 410; snap-fit ​​groove 411; mounting base 420. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] The following is for reference. Figures 1 to 6 The wall-climbing robot of this utility model will be described in detail.

[0035] refer to Figure 1 and Figure 2 According to some embodiments of the present invention, a wall-climbing robot includes a body 100, a connecting assembly 200, a rotating wing support arm 300, and a locking assembly 400. The rotating wing support arm 300 includes a connecting section 310 and a movable section 320. The movable section 320 is rotatably disposed at one end of the connecting section 310 via the connecting assembly 200, and the other end of the connecting section 310 is mounted on the body 100. The locking assembly 400 is disposed on the body 100 and located on the movement path of the movable section 320. The locking assembly 400 can lock and fix the connecting section 310 that fits against it.

[0036] It should be noted that the reference Figure 1The wall-climbing robot has four rotating wing support arms 300 spaced apart along its body 100. Each rotating wing support arm 300 has a rotating wing at its end furthest from the body 100, allowing the rotating wing to be as far away from the body 100 as possible. When the wall-climbing robot is working, the rotating wing can operate and generate lift to keep the entire robot levitating; however, due to the relatively long length of the rotating wing support arms 300, the overall size of the wall-climbing robot is large, which is not conducive to the storage or transportation of the wall-climbing robot.

[0037] It is understood that in the wall-climbing robot of this application, the rotary wing support arm 300 includes a connecting section 310 and a movable section 320, and the movable section 320 is rotatably disposed at one end of the connecting section 310 via the connecting assembly 200, and a rotary wing is installed at the end of the movable section 320 away from the connecting section 310. When the wall-climbing robot of this embodiment is working normally, the operator can drive the movable segment 320 to rotate relative to the connecting segment 310 so that both the movable segment 320 and the connecting segment 310 extend along the same straight line. At this time, the wall-climbing robot can work normally. When the wall-climbing robot of this embodiment needs to be stored or transported, the operator can drive the movable segment 320 to rotate relative to the connecting segment 310 so that the movable segment 320 approaches and fits against the locking component 400 on the body 100, and the locking component 400 locks and fixes the movable segment 320. At this time, both the connecting segment 310 and the movable segment 320 of the rotating wing support arm 300 can be set close to the body 100, thereby reducing the space occupied by the wall-climbing robot as a whole, so as to facilitate the storage or transportation of the wall-climbing robot.

[0038] Understandably, when the movable segment 320 is rotated and folded relative to the connecting segment 310, the locking component 400 can lock and fix the connecting segment 310 to reduce the probability that the movable segment 320 will automatically rotate relative to the connecting segment 310 under the action of external force.

[0039] In order to achieve the locking and fixing of the locking assembly 400 to the movable segment 320, in some embodiments of this utility model, reference is made to... Figure 3 The locking assembly 400 includes a locking clip 410, on which a snap-fit ​​groove 411 is formed to accommodate the movable section 320.

[0040] Understandably, under the action of external force, the movable section 320 can rotate relative to the connecting section 310 until the movable section 320 passes through the slot of the snap-fit ​​groove 411 and is snapped into the snap-fit ​​groove 411.

[0041] Understandably, the card slot 411 has a simple structure and is easy to implement.

[0042] In a further embodiment of this utility model, the width of the slot 411 is smaller than the diameter of the movable section 320.

[0043] Understandably, setting the width of the slot 411 to be smaller than the diameter of the movable segment 320 increases the difficulty for the movable segment 320 to automatically disengage from the slot 411, thereby improving the stability of the locking assembly 400 in locking and fixing the movable segment 320.

[0044] In some other embodiments of this utility model, in order to achieve the connection between the locking clip 410 and the movable segment 320, in addition to the snap-fit ​​groove 411, the locking clip 410 can also be provided with a magnetic component. In this case, the movable segment 320 is made of a magnetic material. When the movable segment 320 approaches the locking clip 410, the movable segment 320 can be attracted and connected to the locking clip 410.

[0045] It should be noted that because the movable segment 320 can rotate relative to the connecting segment 310, the overall space occupied by the wall-climbing robot varies depending on the position of the movable segment 320 relative to the connecting segment 310. To allow the space occupied by the wall-climbing robot to be adjusted according to the needs of the operator, the locking clamp 410 must also adapt to the different positions of the movable segment 320, thereby enabling the locking clamp 410 to lock and fix the movable segment 320 in different positions.

[0046] Based on the above problems, in some embodiments of this utility model, reference is made to... Figure 3 The locking assembly 400 also includes a mounting base 420, which is disposed on the body 100. The locking clamp 410 is rotatably disposed on the mounting base 420, and the rotating surface of the locking clamp 410 is coplanar with the rotating surface of the movable section 320.

[0047] For example, the locking clamp 410 is rotatably mounted on the mounting base 420 about a first vertical axis, and the movable segment 320 is rotatably mounted relative to the connecting segment 310 about a second vertical axis, with both the locking clamp 410 and the movable segment 320 located on the same horizontal plane. In this case, when the locking clamp 410 rotates before the mounting base 420, the locking clamp 410 can still be located on the movement path of the movable segment 320. This allows the operator to adjust the locking position of the movable segment 320 by adjusting the locking clamp 410, thereby making the space occupied by the wall-climbing robot adjustable.

[0048] In some embodiments of this utility model, the connecting component 200 includes a first connecting structure and a second connecting structure, the first connecting structure and the second connecting structure are hinged together, and the first connecting structure and the second connecting structure are detachably connected to the connecting segment 310 and the movable segment 320, respectively.

[0049] It is understandable that, since the first connecting structure and the second connecting structure are detachably connected to the connecting section 310 and the movable section 320 respectively, it is convenient for staff to replace the movable section 320 or the connecting assembly 200.

[0050] In a further embodiment of this utility model, reference is made to... Figure 2 and Figure 4 The first connecting structure includes a first sleeve 210, and a connecting section 310 passes through the inner cavity of the first sleeve 210; the second connecting structure includes a second sleeve 220, and a movable section 320 passes through the inner cavity of the second sleeve 220, and the first sleeve 210 and the second sleeve 220 are hinged together.

[0051] Furthermore, when connecting the connecting section 310, the connecting component 200, and the movable section 320, the operator can insert the connecting section 310 into the first sleeve 210 and the movable section 320 into the second sleeve 220, thereby achieving the hinge connection between the movable section 320 and the connecting section 310.

[0052] It is understandable that the connection between the connecting section 310 and the first sleeve 210 can be achieved through a simple shaft hole fit, and the connection between the connecting section 310 and the first sleeve 210 is simple; the connection between the movable section 320 and the second sleeve 220 can be achieved through a simple shaft hole fit, and the connection between the movable section 320 and the second sleeve 220 is simple.

[0053] In a further embodiment of this utility model, in order to achieve a detachable connection between the connecting section 310 and the first sleeve 210, refer to Figure 2 and Figure 4 The first connecting structure also includes a first clamp 230. The cylinder wall of the first sleeve 210 has a first slit 211 extending along the length of the first sleeve 210. The first slit 211 connects the outside and the inner cavity of the first sleeve 210. The first clamp 230 is fitted on the first sleeve 210 and is used to adjust the width of the first slit 211.

[0054] Furthermore, after the connecting section 310 is inserted into the first sleeve 210, the operator can reduce the width of the first gap 211 on the first sleeve 210 by using the first clamp 230, so that the inner wall of the first sleeve 210 can be tightly attached to the outer circumferential surface of the connecting section 310, thereby generating sufficient frictional force between the first sleeve 210 and the connecting section 310 to prevent relative sliding between them.

[0055] In a further embodiment of this utility model, in order to achieve a detachable connection between the movable section 320 and the second sleeve 220, reference is made to... Figure 2 and Figure 4The second connecting structure also includes a second clamp 240. The cylinder wall of the second sleeve 220 has a second slit 221 extending along the length of the second sleeve 220. The second slit 221 connects to the outside and the inner cavity of the second sleeve 220. The second clamp 240 is fitted on the second sleeve 220 and is used to adjust the width of the second slit 221.

[0056] Furthermore, after the movable section 320 is inserted into the second sleeve 220, the operator can reduce the width of the second gap 221 on the second sleeve 220 by using the second clamp 240, so that the inner wall of the second sleeve 220 can be tightly attached to the outer circumferential surface of the movable section 320, thereby generating sufficient friction between the second sleeve 220 and the movable section 320 to prevent relative sliding between them.

[0057] Specifically, in order to achieve the hinge between the first sleeve 210 and the second sleeve 220, refer to Figure 4 The first sleeve 210 has a first hinge portion 212 and a first abutment portion 213 at one end near the second sleeve 220. The first hinge portion 212 and the first abutment portion 213 are located on opposite sides of the central axis of the first sleeve 210. The second sleeve 220 has a second hinge portion 222 and abutment portion 223 at one end near the first sleeve 210. The second hinge portion 222 and the second abutment portion 223 are located on opposite sides of the central axis of the second sleeve 220. The second hinge portion 222 is hinged to the first hinge portion 212, and the second abutment portion 223 is used to abut against the first abutment portion 213 to prevent the first sleeve 210 from continuing to rotate relative to the second sleeve 220 in a direction away from the locking assembly 400.

[0058] It is understood that by providing a first abutting part 213 on the first sleeve 210 and a second abutting part 223 on the second sleeve 220, when the second sleeve 220 rotates relative to the first sleeve 210 to the coaxial position, the first abutting part 213 can abut against the second abutting part 223, so that the second sleeve 220 and the first sleeve 210 remain coaxial. At this time, the connecting section 310 and the movable section 320 can remain coaxial, so that the wall-climbing robot of this embodiment can work normally.

[0059] To reduce the probability of the second sleeve 220 twisting around the axis of the first sleeve 210, in a further embodiment of this utility model, referring to... Figure 5 The first abutting part 213 is provided with a protrusion 213a, and the second abutting part 223 is provided with a groove 223a that is adapted to the protrusion 213a.

[0060] Furthermore, when the second sleeve 220 is coaxial with the first sleeve 210, the first abutting part 213 abuts against the second abutting part 223, and the protrusion 213a on the first abutting part 213 can be inserted into the groove 223a on the second abutting part 223. At this time, the protrusion 213a can abut against the groove wall of the groove 223a to prevent the second sleeve 220 from twisting around the axis of the first sleeve 210.

[0061] It should be noted that when the wall-climbing robot is working normally, the moving section 320 and the connecting section 310 need to be kept relatively fixed, that is, the second sleeve 220 needs to be kept relatively fixed relative to the first sleeve 210.

[0062] Based on the above problems, in some embodiments of this utility model, reference is made to... Figure 2 and Figure 4 The connecting assembly 200 also includes a locking structure 250, which is disposed on one of the first sleeve 210 and the second sleeve 220. The locking structure 250 can be connected to the other of the first sleeve 210 and the second sleeve 220 to achieve relative locking between the first sleeve 210 and the second sleeve 220.

[0063] Understandably, when the wall-climbing robot needs to work normally, the operator can rotate the movable section 320 to make the movable section 320 and the connecting section 310 coaxial. At this time, the operator can lock the first sleeve 210 and the second sleeve 220 through the locking structure 250, thereby locking the movable section 320 relative to the connecting section 310. When the wall-climbing robot needs to be stored or transported, the operator can release the locking between the first sleeve 210 and the second sleeve 220 through the locking structure 250. At this time, the operator can drive the movable section 320 to rotate relative to the connecting section 310, so that the connecting section 310 is connected to the locking assembly 400, thereby realizing the folding of the rotary wing support arm 300.

[0064] In a further embodiment of this utility model, reference is made to... Figure 2 and Figure 4 The locking structure 250 includes a locking sleeve 251, which has a first thread 251a. The locking sleeve 251 is slidably fitted onto a second sleeve 220. The first sleeve 210 has a connecting part 214, which has a second thread 214a that is adapted to the first thread 251a. Under the action of external force, the locking sleeve 251 can slide along the second sleeve 220 to partially fit onto the first sleeve 210, and the first thread 251a and the second thread 214a can mesh.

[0065] For example, such as Figure 4 and Figure 6As shown, the outer peripheral surface of the locking sleeve 251 is provided with a first thread 251a, and the outer peripheral surface of the first sleeve 210 is provided with an annular connecting part 214. A locking groove adapted to the locking sleeve 251 is formed between the connecting part 214 and the outer peripheral surface of the first sleeve 210, and the groove wall of the locking groove is provided with a second thread 214a.

[0066] Then, the operator can drive the locking sleeve 251 to slide from the second sleeve 220 to the first sleeve 210, so that the locking sleeve 251 is threaded into the locking groove. At this time, one end of the locking sleeve 251 is sleeved on the first sleeve 210, and the other end of the locking sleeve 251 is sleeved on the second sleeve 220, so as to achieve relative locking and fixation between the first sleeve 210 and the second sleeve 220.

[0067] In a further embodiment of this utility model, in order to further improve the connection stability between the locking sleeve 251 and the first sleeve 210, reference is made to... Figure 5 The inner circumferential surface of the locking sleeve 251 is also provided with a third thread 251b, and the outer circumferential surface of the first sleeve 210 is provided with a fourth thread 215 that is compatible with the third thread 251b.

[0068] Furthermore, when the locking sleeve 251 is fitted onto the first sleeve 210, the locking sleeve 251 and the first sleeve 210 can be threadedly connected by the third thread 251b and the fourth thread 215, thereby improving the connection stability between the locking sleeve 251 and the first sleeve 210.

[0069] In some other embodiments of this utility model, in addition to using a locking sleeve 251, the locking structure 250 can also be a locking bolt. In this case, the locking bolt is movably disposed on the second sleeve 220, and the first sleeve 210 is provided with an insertion hole adapted to the locking bolt. When the locking bolt disengages from the insertion hole, the second sleeve 220 can rotate relative to the first sleeve 210; when the locking bolt is inserted into the insertion hole, the second sleeve 220 is relatively fixed relative to the first sleeve 210.

[0070] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wall-climbing robot, characterized in that, include: Organism; Connection components; A rotary wing support arm includes a connecting section and a movable section, wherein the movable section is rotatably disposed at one end of the connecting section via the connecting assembly, and the other end of the connecting section is mounted on the fuselage; A locking component is provided on the body and located on the movement path of the moving segment. The locking component can lock and fix the connecting segment that fits against itself.

2. The wall-climbing robot according to claim 1, characterized in that, The locking assembly includes a locking clip having a snap-fit ​​groove adapted to the movable segment.

3. A wall-climbing robot according to claim 2, characterized in that, The locking assembly further includes a mounting base, which is disposed on the machine body. The locking clamp is rotatably disposed on the mounting base, and the rotation surface of the locking clamp is coplanar with the rotation surface of the movable section.

4. A wall-climbing robot according to claim 1, characterized in that, The connecting component includes a first connecting structure and a second connecting structure, the first connecting structure and the second connecting structure being hinged together, and the first connecting structure and the second connecting structure being detachably connected to the connecting segment and the movable segment, respectively.

5. A wall-climbing robot according to claim 4, characterized in that, The first connecting structure includes a first sleeve, and the connecting section passes through the inner cavity of the first sleeve; the second connecting structure includes a second sleeve, and the movable section passes through the inner cavity of the second sleeve, and the first sleeve and the second sleeve are hinged together.

6. A wall-climbing robot according to claim 5, characterized in that, The first connecting structure further includes a first clamp, and the cylinder wall of the first sleeve has a first slit extending along the length direction of the first sleeve. The first slit connects the outside and the inner cavity of the first sleeve. The first clamp is fitted on the first sleeve and is used to adjust the width of the first slit.

7. A wall-climbing robot according to claim 5, characterized in that, The first sleeve has a first hinge portion and a first abutment portion at one end near the second sleeve. The first hinge portion and the first abutment portion are respectively located on opposite sides of the central axis of the first sleeve. The second sleeve has a second hinge portion and a second abutment portion at one end near the first sleeve. The second hinge portion and the second abutment portion are respectively located on opposite sides of the central axis of the second sleeve. The second hinge portion is hinged to the first hinge portion, and the second abutment portion is used to abut against the first abutment portion to prevent the first sleeve from continuing to rotate relative to the second sleeve in a direction away from the locking assembly.

8. A wall-climbing robot according to claim 7, characterized in that, The first abutting part has a protrusion, and the second abutting part has a groove adapted to the protrusion.

9. A wall-climbing robot according to claim 5, characterized in that, The connecting assembly further includes a locking structure disposed on one of the first sleeve and the second sleeve, the locking structure being capable of connecting with the other of the first sleeve and the second sleeve to achieve relative locking between the first sleeve and the second sleeve.

10. A wall-climbing robot according to claim 9, characterized in that, The locking structure includes a locking sleeve with a first thread. The locking sleeve is slidably fitted onto a second sleeve. The first sleeve has a connecting portion with a second thread that matches the first thread. Under external force, the locking sleeve can slide along the second sleeve to partially fit onto the first sleeve, and the first thread and the second thread can engage.

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