Pipe cleaning tool

Abstract

The application relates to a pipeline cleaning tool. The pipeline cleaning tool comprises a handle, an assembly head and a cleaning piece. The handle is provided with a mounting groove at the first end, and the mounting groove is provided with a limiting surface extending along a first plane. The assembly head is rotatably assembled in the mounting groove and has an unfolded position and a storage position. When the assembly head is in the unfolded position, the abutting surface of the assembly head is limited by the limiting surface, and the cleaning piece is arranged to extend away from the limiting surface in a first direction, and the first direction is perpendicular to the first plane. In this way, when the pipeline is cleaned, the position of the assembly head is stable, and the accumulated material is effectively pushed out by the limiting surface and the abutting surface of the assembly head. When the assembly head is in the storage position, the overall size of the pipeline cleaning tool is small, and the pipeline cleaning tool is convenient to store.

Description

Technical Field

[0001] This application relates to the field of pipe cleaning tools, and in particular to a pipe cleaning tool. Background Technology

[0002] In key production stages such as tobacco processing and curing, hot air ducts serve as core equipment, continuously supplying high-temperature hot air to processing units to meet the temperature requirements of processes such as tobacco leaf / shred drying and shaping. However, during production, tobacco leaf fragments, shredded tobacco, and tobacco residue inevitably intrude into the ductwork through equipment gaps and accumulate continuously. These deposits not only form an insulation layer, significantly reducing heat transfer efficiency, but also reduce the effective ventilation cross-sectional area of ​​the ductwork, leading to a decrease in hot air flow and uneven temperature distribution, resulting in serious energy waste and process fluctuations.

[0003] In related technologies, the method for cleaning these deposits inside the pipes is to completely stop the production line and break the pipes into multiple shorter sections for cleaning one by one. This process is extremely time-consuming and labor-intensive, causing prolonged production interruptions, and involves high-altitude hoisting and operation of high-temperature components, posing significant safety hazards. Utility Model Content

[0004] Therefore, it is necessary to provide a pipe cleaning tool to address the above problems.

[0005] A pipe cleaning tool includes: a handle, the head end of which is provided with a mounting groove, the mounting groove having a limiting surface extending along a first plane;

[0006] The assembly head is rotatably mounted in the mounting slot. The assembly head has an unfolded position relative to the handle. When the assembly head is in the unfolded position, the contact surface of the assembly head abuts and the limiting surface abuts and limits the movement.

[0007] A cleaning component is provided on the assembly turn head. When the assembly turn head is in the unfolded position, the cleaning component extends along the first direction toward the side opposite to the limiting surface.

[0008] When the assembly head is in the unfolded position, the first direction is perpendicular to the first plane.

[0009] The aforementioned pipe cleaning tool includes a handle, an assembly head, and a cleaning component. The handle has a mounting groove at its tip, and the mounting groove has a limiting surface extending along a first plane. The assembly head is rotatably mounted in the mounting groove and has an extended position and a retracted position. In the extended position, the contact surface of the assembly head abuts against the limiting surface, and the cleaning component extends away from the limiting surface along a first direction perpendicular to the first plane. Thus, during pipe cleaning, the contact surface between the limiting surface and the contact surface of the assembly head ensures the stability of the assembly head's position, effectively pushing away accumulated debris. Furthermore, when the assembly head is in the retracted position, the overall size of the pipe cleaning tool is small, facilitating storage.

[0010] In one embodiment, the handle includes at least two sleeves, in which one sleeve is fitted over the outside of the other sleeve, and the two adjacent sleeves slide relative to each other.

[0011] In one embodiment, the handle includes a main rod and at least one extension rod, the first end of the main rod having a mounting groove, and the extension rod being fitted and connected to the tail end of the main rod.

[0012] In one embodiment, the extension rod includes at least two connecting rods, with adjacent connecting rods being assembled and connected in sequence.

[0013] In one embodiment, the assembly head has a support surface;

[0014] When the assembly head is in the unfolded position, the support surface is located on the side of the cleaning part away from the tail end of the handle along the length of the handle.

[0015] In one embodiment, the assembly head has two spaced-apart first and second stops, with the cleaning component clamped between the first and second stops;

[0016] When the assembly head is in the unfolded position, the first stop and the second stop are arranged sequentially from the beginning to the end of the handle, and the surface of the first stop facing the second stop is the support surface.

[0017] In one embodiment, the cleaning component is detachably mounted to the assembly rotor.

[0018] In one embodiment, the cleaning element is a scraper.

[0019] In one embodiment, the outer edge contour of the cleaning element is an arc.

[0020] In one embodiment, the assembly head has a retracted position relative to the handle, and when the assembly head is in the retracted position, the assembly head abuts against the outer surface of the handle.

[0021] The pipe cleaning tool also includes a first magnetic component and a second magnetic component. The first magnetic component is located on the assembly head, and the second magnetic component is located on the handle. When the assembly head is in the storage position, the first magnetic component and the second magnetic component magnetically engage. Attached Figure Description

[0022] Figure 1 This is a perspective view of a pipe cleaning tool in an unfolded state according to an embodiment of this application.

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3This is a partial cross-sectional view of a pipe cleaning tool in its unfolded state according to an embodiment of this application.

[0025] Figure 4 This is a perspective view of a pipe cleaning tool in a stowed state according to an embodiment of this application.

[0026] Figure 5 This is a partial cross-sectional view of a pipe cleaning tool in a stowed state according to an embodiment of this application.

[0027] Figure label:

[0028] 100. Pipe cleaning tool; 1. Handle; 11. Sleeve; 10. Mounting groove; 101. Limiting surface; 2. Assembly head; 201. Abutment surface; 202. Support surface; 21. First stop; 22. Second stop; 3. Cleaning component; 41. First magnetic component; 42. Second magnetic component. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0035] See Figures 1 to 5 As shown, the pipe cleaning tool 100 according to this application includes a handle 1, an assembly head 2, and a cleaning component 3. Along the length of the handle 1, a mounting groove 10 is provided at its tip, and the mounting groove 10 has a limiting surface 101 extending along a first plane. The assembly head 2 is rotatably mounted in the mounting groove 10 and is movably rotated relative to the handle 1, such that the assembly head 2 has an extended position and a retracted position relative to the handle 1. When the assembly head 2 is in the extended position, its contact surface 201 abuts against and is limited by the limiting surface 101. The cleaning component 3 is disposed on the assembly head 2. When the assembly head 2 is in the extended position, the cleaning component 3 extends along a first direction toward a side opposite to the limiting surface 101. Furthermore, when the assembly head 2 is in the extended position, the first direction is perpendicular to the first plane.

[0036] It is important to understand that, see Figures 1 to 5As shown, in one embodiment of this application, the overall structure of the handle 1 is cylindrical. For this configuration of the handle 1, the first plane can be understood as a plane extending along the length direction (X direction in the figure) and a radial direction (Y direction in the figure). Of course, in other embodiments of this application, the overall structure of the handle 1 is not limited to being only cylindrical; for example, the overall structure of the handle 1 can be a prism or other configurations. For example, when the overall structure of the handle 1 is a quadrangular prism, the first plane can be understood as a plane extending along the length and width directions of the handle 1.

[0037] And, combined Figures 1 to 3 The pipe cleaning tool 100 is shown in its unfolded state (i.e., the assembly head 2 is in the unfolded position). When the assembly head 2 is in the unfolded position, the aforementioned first direction can be referred to as the Z-direction shown in the attached figure. For example, in this embodiment, the overall structure of the handle 1 is a cylinder, and the first direction can be understood as another radial direction, which is perpendicular to the radial direction constituting the first plane. Therefore, when the assembly head 2 is in the unfolded position, the first direction is perpendicular to the limiting surface 101. In addition, for example, when the overall structure of the handle 1 is a quadrangular prism, when the assembly head 2 is in the unfolded position, the first direction can be understood as the height direction of the handle 1.

[0038] Based on the above definitions of the first plane and the first direction, during the process of using the pipe cleaning tool 100 to clean the deposits inside the pipe, the operator brings the cleaning part 3 into contact with the inside of the pipe at the edge furthest from the handle 1 in the first direction. This causes the cleaning part 3 to exert a force on the pipe wall along the first direction, while simultaneously, the pipe wall exerts a reaction force on the cleaning part 3 in the opposite direction. Furthermore, since the assembly rotor 2 is in the unfolded position, the first direction is perpendicular to the limiting surface 101 (i.e., the first direction is perpendicular to the first plane), and the contact surface 201 of the assembly rotor 2 abuts and limits contact with the limiting surface 101. Therefore, the limiting surface 101 area of ​​the handle 1 exerts a force on the assembly rotor 2 extending towards the cleaning part 3 in the first direction, thereby maximizing the rotational limitation of the rotating assembly rotor 2.

[0039] Thus, when the operator holds the handle 1 to pull the pipe cleaning tool 100 backward along the pipe to drive the debris out of the pipe, the cleaning element 3 maintains a stable position, thereby ensuring that the cleaning element 3 can push the debris out of the pipe. It should be understood that during the process of pulling the pipe cleaning tool 100 backward along the pipe to drive the debris out of the pipe, the debris exerts forward resistance on the cleaning element 3 along the length of the pipe cleaning tool 100 (which can also be understood as the length of the handle 1). However, for the pipe cleaning tool 100 according to this application, since the assembly head 2 is in the unfolded position, the contact surface 201 of the assembly head 2 abuts and is limited by the limiting surface 101, the assembly head 2 maintains a stable position under the limiting action of the handle 1. Even if the debris exerts significant resistance on the cleaning element 3, it is difficult to overcome the limiting action of the handle 1 on the assembly head 2.

[0040] In addition, combined Figure 4 As shown in the figure, the assembly head 2 is rotatably mounted in the mounting slot 10. Therefore, when the assembly head 2 is in the storage position (i.e., the pipe cleaning tool 100 is in the storage state), the overall size of the pipe cleaning tool 100 is small. This makes it easy to store the pipe cleaning tool 100 when it is not in use.

[0041] In summary, the pipe cleaning tool 100 according to this application includes a handle 1, an assembly head 2, and a cleaning component 3. The handle 1 has a mounting groove 10 at its tip, and the mounting groove 10 has a limiting surface 101 extending along a first plane. The assembly head 2 is rotatably mounted in the mounting groove 10, and has an unfolded position and a retracted position. When in the unfolded position, the contact surface 201 of the assembly head 2 abuts against and limits the limiting surface 101, and the cleaning component 3 extends away from the limiting surface 101 along a first direction perpendicular to the first plane. Thus, when cleaning the pipe, the contact surface 101 against the contact surface 201 of the assembly head 2 ensures the stability of the assembly head 2, effectively pushing away accumulated debris. Furthermore, when the assembly head 2 is in the retracted position, the overall size of the pipe cleaning tool 100 is small, making it easy to store.

[0042] See Figure 1 and Figure 4 As shown, in some embodiments of this application, the handle 1 includes at least two sleeves 11, in which one sleeve 11 is sleeved on the outside of the other sleeve 11, and the two adjacent sleeves 11 slide relative to each other.

[0043] For example, see Figure 1 and Figure 4As shown, the handle 1 includes three sleeves 11. These three sleeves 11 are sequentially fitted along the length of the handle 1, and adjacent sleeves 11 can slide relative to each other along the length of the handle 1 (as shown in the X direction in the attached figure), thus achieving overall length adjustment of the handle 1. Therefore, when cleaning deeper pipes, the operator can stretch the handle 1 to a suitable length, allowing the cleaning component 3 to reach the accumulated material deep within the pipe. Furthermore, when cleaning shallow pipes or storing tools, the operator can retract the handle 1 to a shorter or minimum length, significantly reducing the overall length of the pipe cleaning tool 100, thereby reducing the space occupied by the pipe cleaning tool 100. This telescopic handle 1 not only expands the applicability of the pipe cleaning tool 100 but also further optimizes its portability and storage. Simultaneously, the flexible adjustment of the handle 1 length does not affect the contact and limiting stability of the assembly head 2 in the unfolded position, ensuring that the cleaning component 3 always maintains an effective working posture.

[0044] In the above embodiments, the handle 1 is described as a telescopic structure, but this application is not limited to this. For example, in some other embodiments of this application, the handle 1 may include a main rod and at least one extension rod. The first end of the main rod is provided with a mounting groove 10, and the extension rod is assembled and connected to the tail end of the main rod. In this way, when cleaning deep and long pipes, the working range of the pipe cleaning tool 100 is significantly extended by adding the extension rod, so that the cleaning component 3 can effectively reach the accumulation deep in the pipe; when cleaning shallow pipes or storing tools, the detachable extension rod restores the basic length, greatly reducing the storage volume. This modular design not only expands the applicable scenarios of the tool, but also provides a more flexible size combination scheme. It is particularly noteworthy that the assembly connection between the extension rod and the main rod is stable and reliable, and will not affect the contact and limiting relationship between the contact surface 201 and the limiting surface 101 when the assembly head 2 is in the unfolded position during cleaning operations, ensuring that the cleaning component 3 always maintains a stable working posture to efficiently push the accumulation.

[0045] In some embodiments of this application, the extension rod may include at least two connecting rods, with adjacent connecting rods being sequentially assembled and connected. For example, adjacent connecting rods can be sequentially and detachably assembled and disassembled via end connection structures (such as threaded interfaces or snap-fit ​​bosses). Thus, the operator can extend multiple connecting rods end-to-end in stages according to the required pipe depth: the first connecting rod is assembled at the end of the main rod, and subsequent connecting rods are sequentially assembled at the end of the preceding connecting rod.

[0046] In this way, when cleaning ultra-deep pipes, the combination of multi-stage connecting rods can significantly expand the working range, allowing the cleaning component 3 to accurately reach the deposits deep within the pipe. When cleaning shallow pipes or storing tools, the connecting rods can be disassembled step by step until the basic length is restored, significantly optimizing storage efficiency. This multi-stage modular design improves the flexibility and precision of the pipe cleaning tool 100's length adjustment, making it particularly suitable for cleaning complex pipe systems. It is important to emphasize that the assembly interfaces of each connecting rod stage all adopt anti-loosening designs (such as thread-locking adhesive or elastic clips) to ensure that no accidental disengagement occurs when transmitting tension during cleaning operations, and it does not affect the stable contact and limiting of the contact surface 201 and the limiting surface 101 when the assembly head 2 is in the unfolded position, ensuring that the cleaning component 3 always maintains an efficient working posture.

[0047] See Figure 3 As shown, in some embodiments of this application, the assembly head 2 has a support surface 202. When the assembly head 2 is in the unfolded position, along the length direction of the handle 1 (as shown in the X direction in the figure), the support surface 202 is located on the side of the cleaning member 3 opposite to the tail end of the handle 1. Thus, when the operator pulls the handle 1 backward, the support surface 202 generates a supporting force on the cleaning member 3 (i.e., the assembly head 2 generates a supporting force on the cleaning member 3), thereby improving the stability of the cleaning member 3.

[0048] See Figure 2 and Figure 3 As shown, in some embodiments of this application, the assembly turntable 2 has two spaced-apart first stops 21 and second stops 22. When the cleaning component 3 is disposed on the assembly turntable 2, it is sandwiched between the first stops 21 and the second stops 22. When the assembly turntable 2 is in the unfolded position, the first stops 21 and the second stops 22 are arranged sequentially from the beginning to the end of the handle 1, and the surface of the first stops 21 facing the second stops 22 is the support surface 202. Since the cleaning component 3 is sandwiched between the first stops 21 and the second stops 22, the first stops 21 and the second stops 22 respectively limit the cleaning component 3 from both sides along the arrangement direction of the first stops 21 and the second stops 22, thereby improving the stability of the cleaning component 3.

[0049] In some embodiments of this application, the cleaning component 3 is detachably mounted to the assembly rotor 2. This detachable design allows for the replacement of the cleaning component 3. For example, cleaning components 3 of different sizes can be replaced to fit pipes of different sizes. Furthermore, the detachable design also allows for the replacement of damaged cleaning components 3.

[0050] For example, see Figure 3As shown, in one embodiment of this application, both the first stop 21 and the second stop 22 are provided with mounting through holes, and the cleaning component 3 is also provided with mounting through holes. When the cleaning component 3 is assembled to the assembly rotary head 2, the mounting through holes in the cleaning component 3, the mounting through holes in the first stop 21, and the mounting through holes in the second stop 22 are all coaxially arranged. Then, bolts are used to fix the cleaning component 3 between the first stop 21 and the second stop 22, thus achieving the effect of detachably assembling the cleaning component 3 to the assembly rotary head 2. It should be noted that in the above embodiment, the cleaning component 3 and the assembly rotary head 2 are fixedly assembled by bolts, but this application is not limited to this. The fixed connection method between the cleaning component 3 and the assembly rotary head 2 can be specifically set according to design requirements. For example, the cleaning component 3 and the assembly rotary head 2 can be detachably assembled by a snap-fit ​​connection.

[0051] Furthermore, the above embodiments are described using the example of the cleaning component 3 being detachably mounted to the assembly rotor 2, but this application is not limited thereto. For example, the cleaning component 3 may be welded and fixed to the assembly rotor 2.

[0052] See Figure 2 As shown, in some embodiments of this application, the cleaning element 3 is a scraper, ensuring that the cleaning element 3 can effectively push away obstacles in the pipe and reduce the probability of obstacles being missed. For example, small objects such as tobacco shreds often accumulate in the pipe. Since the cleaning element 3 is a scraper with no gaps on its surface, there is no problem of small objects such as tobacco shreds passing through the cleaning element 3 during the process of the cleaning element 3 pushing the small objects to move. That is, the cleaning element 3, which is constructed as a scraper, has a 100% blocking rate.

[0053] See Figure 2 As shown, in some embodiments of this application, the outer edge contour of the cleaning component 3 is an arc, which improves the fit between the outer edge contour of the cleaning component 3 and the inner wall of the pipe, and reduces the probability of obstruction leakage.

[0054] See Figure 4 and Figure 5 As shown, in some embodiments of this application, the pipe cleaning tool 100 further includes a first magnetic member 41 and a second magnetic member 42. The first magnetic member 41 is disposed on the assembly head 2, and the second magnetic member 42 is disposed on the handle 1. When the assembly head 2 is in the storage position, the first magnetic member 41 and the second magnetic member 42 magnetically engage. This ensures that the assembly head 2 has a stable position when in the storage position, preventing the assembly head 2 from rotating arbitrarily.

[0055] For example, see Figure 5As shown, in some embodiments of this application, the first magnetic member 41 is a bolt for fixing the cleaning member 3 to the assembly head 2, and the bolt is made of metal, while the second magnetic member 42 is a magnet. Thus, when the assembly head 2 rotates to the storage position, a magnetic force is generated between the first magnetic member 41 and the second magnetic member 42, achieving the effect of magnetically fixing the assembly head 2 to the handle 1. This means the assembly head 2 requires a certain external force to rotate, ensuring the pipe cleaning tool 100 has a stable storage state. It is worth noting that by using magnetic fixing, the user only needs to rotate the assembly head 2 to the storage position during storage, requiring minimal operation and improving the user experience.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pipe cleaning tool (100), characterized in that, include: Handle (1), the first end of the handle (1) is provided with a mounting groove (10), the mounting groove (10) has a limiting surface (101) extending along a first plane. Assembly head (2), the assembly head (2) is rotatably mounted in the mounting groove (10), the assembly head (2) has an unfolded position relative to the handle (1), and when the assembly head (2) is in the unfolded position, the abutting surface (201) of the assembly head (2) abuts and limits the limiting surface (101); The cleaning component (3) is disposed on the assembly turn head (2). When the assembly turn head (2) is in the unfolded position, the cleaning component (3) extends along the first direction toward the side opposite to the limiting surface (101). When the assembly head (2) is in the unfolded position, the first direction is perpendicular to the first plane.

2. The pipe cleaning tool (100) according to claim 1, characterized in that, The handle (1) includes at least two sleeves (11), in which one sleeve (11) is sleeved on the outside of the other sleeve (11), and the two adjacent sleeves (11) slide relative to each other.

3. The pipe cleaning tool (100) according to claim 1, characterized in that, The handle (1) includes a main rod and at least one extension rod. The first end of the main rod is provided with the mounting groove (10), and the extension rod is assembled and connected to the tail end of the main rod.

4. The pipe cleaning tool (100) according to claim 3, characterized in that, The extension rod includes at least two connecting rods, and two adjacent connecting rods are assembled and connected in sequence.

5. The pipe cleaning tool (100) according to claim 1, characterized in that, The assembly head (2) has a support surface (202); When the assembly head (2) is in the unfolded position, in the length direction of the handle (1), the support surface (202) is located on the side of the clearing member (3) away from the tail end of the handle (1).

6. The pipe cleaning tool (100) according to claim 5, characterized in that, The assembly head (2) has two spaced-apart first stops (21) and second stops (22), and the cleaning component (3) is sandwiched between the first stops (21) and the second stops (22); When the assembly head (2) is in the unfolded position, the first stop (21) and the second stop (22) are arranged sequentially from the beginning to the end of the handle (1), and the surface of the first stop (21) facing the second stop (22) is the support surface (202).

7. The pipe cleaning tool (100) according to claim 1, characterized in that, The cleaning component (3) is detachably mounted to the assembly head (2).

8. The pipe cleaning tool (100) according to claim 1, characterized in that, The cleaning component (3) is a scraper.

9. The pipe cleaning tool (100) according to claim 1, characterized in that, The outer edge contour of the cleaning component (3) is an arc.

10. The pipe cleaning tool (100) according to any one of claims 1 to 9, characterized in that, The assembly head (2) has a storage position relative to the handle (1). When the assembly head (2) is in the storage position, the assembly head (2) abuts against the outer surface of the handle (1). It also includes: a first magnetic suction member (41) and a second magnetic suction member (42), the first magnetic suction member (41) is disposed on the assembly turn head (2), and the second magnetic suction member (42) is disposed on the handle (1). When the assembly turn head (2) is in the storage position, the first magnetic suction member (41) and the second magnetic suction member (42) magnetically engage.

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