Pipe cutting tool

Abstract

A pipe cutting tool (100). The pipe cutting tool (100) comprises a handle (1); the handle (1) is provided with a mounting portion (10) for adapting to cutters (3) of different cutting specifications; the cutter (3) is detachably mounted on the mounting portion (10); the cutter (3) comprises a housing (31); the housing (31) is provided with an accommodating groove (310) for accommodating a pipe; and blades (32) for cutting the pipe are mounted on a peripheral wall of the accommodating groove (310).

Description

Pipe cutting tools

[0001] Related applications

[0002] This application claims priority to Chinese patent application filed on April 14, 2025, with application number 202520700306.1, entitled "Pipe Cutting Tool", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of cutting tool technology, and in particular to a pipe cutting tool. Background Technology

[0004] To adapt to different applications, there are various types of pipes with different radial dimensions.

[0005] When installing and using pipes, the required length varies depending on the complexity and diversity of the application. Therefore, pipes need to be cut during use. Currently, pipes are cut using cutting tools. However, most cutting tools use radial positioning balls to determine the required cutting diameter. This structure has poor cutting accuracy, and the cut surface is prone to defects such as dents and deformations caused by improper positioning. Moreover, the adjustment process is often time-consuming. Summary of the Invention

[0006] Therefore, it is necessary to provide a pipe cutting tool that can cut pipes of different diameters.

[0007] This application provides a pipe cutting tool, including a handle, the handle having a mounting part for adapting to cutters of different cutting specifications, the cutter being detachably mounted on the mounting part, the cutter including a housing, the housing having a receiving groove for accommodating a pipe, and a blade for cutting the pipe being mounted on the peripheral wall of the receiving groove.

[0008] In one embodiment, the cutter is rotatably constrained to the mounting portion about its own axis.

[0009] In one embodiment, the cutter is arranged to rotate relative to the handle in a first direction, either clockwise or counterclockwise.

[0010] In one embodiment, the mounting part is a mounting groove for inserting the cutter. The mounting groove includes a first groove wall. The wall surface of the housing corresponding to the first groove wall is defined as the first wall surface. A transmission structure is matched between the first groove wall and the first wall surface to enable the cutter to rotate along the first direction.

[0011] In one embodiment, the transmission structure is a ratchet structure, which includes a first tooth disposed on the first groove wall and a second tooth disposed on the first wall surface. One of the first tooth and the second tooth is an arc-shaped ratchet formed by connecting multiple teeth arranged sequentially along the rotation direction of the cutter. When the cutter is constrained within the mounting groove, the first tooth and the second tooth mesh.

[0012] In one embodiment, there are two first groove walls, which are arranged at intervals relative to each other along the axial direction of the cutter, and at least one first groove wall is provided with the first tooth.

[0013] In one embodiment, the first end of the handle is provided with two clamps arranged at a relatively distance from each other. The inner walls of the two clamps facing each other are both the first groove walls. The two clamps and the first end of the handle together form the mounting groove. The clamps are provided with clearance grooves that are coaxially arranged with the receiving groove and avoid the pipe. The clearance groove and the receiving groove are respectively provided with openings for the pipe to be inserted.

[0014] In one embodiment, at least one of the first groove walls is provided with first teeth spaced apart along the radial direction of the tube.

[0015] In one embodiment, the first tooth is an arc-shaped ratchet, and the second tooth is a single tooth consisting of only one tooth portion; or, the first tooth is a single tooth consisting of only one tooth portion, and the second tooth is an arc-shaped ratchet.

[0016] In one embodiment, the first tooth is an arc-shaped ratchet, and for each arc-shaped ratchet, the first wall surface is provided with at least two second teeth arranged at intervals along the length direction of the arc-shaped ratchet.

[0017] In one embodiment, at least two of the second teeth are arranged along the diameter direction of the cutter.

[0018] In one embodiment, the first tooth is an arc-shaped ratchet, and a groove is formed between two adjacent arc-shaped ratchets. A sliding part is provided on the first wall surface that slides in cooperation with the groove. When the cutter is constrained in the mounting groove, the groove and the sliding part slide in cooperation.

[0019] In one embodiment, the sliding portion is a protrusion that is adapted to the groove and extends along the length direction of the groove.

[0020] In one embodiment, a guide structure for guiding the rotation of the cutter is matched between the first groove wall and the first wall surface. The guide structure includes a first guide portion disposed on the first groove wall and a second guide portion disposed on the first wall surface. The first guide portion and / or the second guide portion extend along the rotation direction of the cutter. When the cutter is constrained within the mounting groove, the first guide portion and the second guide portion guide and cooperate.

[0021] In one embodiment, there are two first groove walls, which are arranged at intervals relative to each other along the axial direction of the cutter. Each of the two first groove walls is provided with a first guide portion, and the housing is provided with a second guide portion at the position corresponding to the first guide portion.

[0022] In one embodiment, one of the first guide portion and the second guide portion is a sliding portion, and the other of the first guide portion and the second guide portion is a groove, which extends along the rotation direction of the cutter.

[0023] In one embodiment, the second guide portion is disposed at the outer edge of the first wall surface; or, the second guide portion is disposed between the outer edge of the first wall surface and the receiving groove, so that the second guide portions of the cutters of different cutting specifications are adapted to the same first guide portion.

[0024] In one embodiment, the handle is provided with a locking mechanism that locks or unlocks the two clamps, wherein when the two clamps are locked, the first tooth engages with the second tooth.

[0025] In one embodiment, the handle includes two gripping parts that are sequentially joined along the axial direction of the cutter. A clamping plate is fixedly connected to the first end of each gripping part. The locking mechanism is disposed on the two gripping parts to lock or unlock the two gripping parts.

[0026] In one embodiment, the two gripping parts are defined as a first gripping part and a second gripping part, respectively. The first gripping part has a mounting groove on the side opposite to the second gripping part. The locking mechanism includes: a mounting base fixedly connected to the second gripping part, the mounting base having an extension leg extending into the mounting groove; an elastic member constrained within the mounting groove, the elastic member having a clearance hole for the extension leg to pass through, the portion of the extension leg passing through the clearance hole being defined as a first part; and a rotating arm, the first arm end of the rotating arm being rotatably connected to the first part via a mounting shaft extending radially along the cutter, and the first arm end of the rotating arm having an abutment portion extending toward the elastic member. When the two gripping parts are locked, the abutment portion abuts against the elastic member, thereby causing the two gripping parts to be in an abutting state; when the two gripping parts are unlocked, the abutment portion is disengaged from the elastic member.

[0027] In one embodiment, the second arm end of the rotating arm is provided with a raised portion.

[0028] In one embodiment, the second ends of the two grips are rotatably connected by a connecting shaft that extends radially along the cutter.

[0029] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description

[0030] To better describe and illustrate embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more accompanying drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the currently described embodiments and / or examples, or the best mode of these inventions as currently understood.

[0031] Figure 1 is a perspective view of a pipe cutting tool according to an embodiment of this application.

[0032] Figure 2 is a schematic diagram of the structure in Figure 1 without the cutting blade.

[0033] Figure 3 is a schematic diagram of the structure of a cutter for cutting 1-inch pipes according to one embodiment of this application.

[0034] Figure 4 is a schematic diagram of the structure of a cutter for cutting 3 / 4-inch pipes according to one embodiment of this application.

[0035] Figure 5 is a schematic diagram of the structure of a cutter for cutting 1 / 2-inch pipes according to one embodiment of this application.

[0036] Figure 6 is a structural schematic diagram of Figure 4 from another angle.

[0037] Figure 7 is a cross-sectional view of Figure 1.

[0038] Figure 8 is a magnified view of point I in Figure 7.

[0039] Figure 9 is a schematic diagram of the structure of the first gripping part in Figure 1.

[0040] Figure 10 is a schematic diagram of the structure of the second gripping part in Figure 1.

[0041] Figure 11 is a schematic diagram of the cutter structure in one embodiment.

[0042] Figure 12 is a perspective view of a pipe cutting tool according to an embodiment of this application.

[0043] Reference numerals: 100, pipe cutting tool; 1, handle; 10, mounting part; 11, first gripping part; 111, assembly groove; 12, second gripping part; 13, first end; 14, connecting shaft; 2, clamping plate; 20, mounting groove; 21, first groove wall; 22, clearance groove; 3, cutter; 31, housing; 310, receiving groove; 311, first wall surface; 32, blade; 33, roller; 4, transmission structure; 41, first tooth; 42, second tooth; 5, opening; 6, guide structure; 61, protrusion; 62, slide groove; 7, locking mechanism; 71, mounting base; 711, extension foot; 7111, first part; 72, elastic element; 720, clearance hole; 721, arched part; 73, rotating arm; 731, abutment part; 732, main body part; 733, raised part; 74, mounting shaft. Detailed Implementation

[0044] 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.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0046] Furthermore, the terms "first" and "second" are used 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may be at an angle to the axial direction.

[0049] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0050] As shown in Figures 1 to 10, this application discloses a pipe cutting tool 100. The pipe cutting tool 100 includes a handle 1, and the handle 1 is provided with a mounting part 10 for adapting to cutters 3 of different cutting specifications. The cutter 3 is detachably mounted on the mounting part 10. The cutter 3 includes a housing 31, and the housing 31 is provided with a receiving groove 310 for accommodating pipes. A blade 32 for cutting pipes is mounted on the peripheral wall of the receiving groove 310.

[0051] It should be noted that "cutting blades of different specifications 3" are used to cut pipes of different diameters. For example, there are cutting blades adapted to cut 1-inch pipes (see Figure 3), cutting blades adapted to cut 3 / 4-inch pipes (see Figure 4), or cutting blades adapted to cut 1 / 2-inch pipes (see Figure 5).

[0052] It is understandable that by adapting different cutting blades 3 to the mounting part 10 of the handle 1, the cutting diameter can be changed. When it is necessary to cut pipes of different diameters, it is only necessary to install the corresponding cutting blade 3 on the mounting part 10. The operation is convenient and overcomes the problems of pipe squeezing caused by relying on the roller 33 to adjust the radial positioning position of the pipe in the prior art. This is conducive to ensuring cutting accuracy and pipe quality.

[0053] Furthermore, the cutter 3 is rotatably constrained to the mounting portion 10 around its own axis, and the extension direction of the axis of the cutter 3 is coaxial or parallel to the axis of the pipe in which the cutter 3 is housed. In this way, the limited rotation angle caused by the wrist when rotating and cutting the pipe by holding the handle 1 can be overcome by rotating the cutter 3 relative to the mounting portion 10, and the circumferential cutting of the pipe can be conveniently performed by rotating the cutter 3 relative to the mounting portion 10.

[0054] To ensure smooth rotation of the cutter 3 relative to the pipe, as shown in Figures 1 and 3-6, rollers 33 are installed on the peripheral wall of the receiving groove 310. The rollers 33 and the blade 32 are arranged at intervals along the circumference of the receiving groove 310. Schematic, there may be one, two, or more rollers 33. In one embodiment, there are two rollers 33.

[0055] Specifically, the cutter 3 is arranged to rotate relative to the handle 1 in a first direction A, either clockwise or counterclockwise. Thus, the cutter 3 can rotate in one direction to cut the pipe.

[0056] In one embodiment, the mounting part 10 is a mounting surface. In this embodiment, as shown in Figures 1 and 2, the mounting part 10 is a mounting groove 20 for inserting the cutter 3. The mounting groove 20 includes a first groove wall 21. As shown in Figures 2 to 6, the wall surface of the housing 31 corresponding to the first groove wall 21 is defined as the first wall surface 311. A transmission structure 4 is matched between the first groove wall 21 and the first wall surface 311 to enable the cutter 3 to rotate along the first direction A.

[0057] Specifically, as shown in Figure 7, the aforementioned transmission structure 4 is a ratchet structure. As shown in Figures 2 to 6, the ratchet structure includes a first tooth 41 disposed on the first groove wall 21 and a second tooth 42 disposed on the first wall surface 311. One of the first tooth 41 and the second tooth 42 is an arc-shaped ratchet formed by connecting multiple teeth arranged sequentially along the rotation direction of the cutter 3. When the cutter 3 is constrained within the mounting groove 20, the first tooth 41 and the second tooth 42 mesh. Thus, the meshing of the first tooth 41 and the second tooth 42 achieves unidirectional rotation of the cutter 3 relative to the mounting portion 10.

[0058] Schematic, as shown in Figures 2 and 9, the first tooth 41 on the first groove wall 21 is an arc-shaped ratchet. As shown in Figures 3 to 6, the second tooth 42 on the first wall surface 311 is a single tooth with only one tooth portion or a double tooth with two tooth portions. Specifically, the mounting groove 20 includes two first groove walls 21, which are arranged relatively spaced along the axial direction of the cutter 3, and at least one first groove wall 21 is provided with a first tooth 41.

[0059] In addition to the two first groove walls 21, the mounting groove 20 also includes an arc-shaped second groove wall. The second groove wall extends circumferentially along the first groove wall 21, and the outer edges of the two first groove walls 21 are respectively connected to the corresponding edges of the second groove wall.

[0060] In this embodiment, as shown in FIG2, the first end 13 of the handle 1 is provided with two clamping plates 2 arranged at relative intervals. The inner walls of the two clamping plates 2 facing each other are both first groove walls 21. The two clamping plates 2 and the first end 13 of the handle 1 together form an installation groove 20. The clamping plates 2 have clearance grooves 22 arranged coaxially with the receiving groove 310 and avoiding the pipe. The clearance grooves 22 and the receiving groove 310 have openings 5 ​​for the pipe to be inserted. In this way, the pipe can enter and exit the receiving groove 310 through the openings 5.

[0061] This application provides another embodiment, wherein at least one first groove wall 21 is provided with first teeth 41 spaced apart along the radial direction of the pipe. Thus, the presence of the first teeth 41 spaced apart along the radial direction allows them to mesh with second teeth 42 of cutters 3 of different cutting specifications, thereby better adapting to cutters 3 of different cutting specifications. There are at least two first teeth 41 spaced apart along the radial direction of the pipe.

[0062] Schematic, each of the two first groove walls 21 is provided with at least two first teeth 41 arranged at intervals along the radial direction of the pipe. Alternatively, as shown in Figure 2, only one first groove wall 21 is provided with at least two first teeth 41 arranged at intervals along the radial direction of the pipe.

[0063] In one embodiment, each arc-shaped ratchet corresponds to one second tooth 42. This application also provides an embodiment, specifically, as shown in Figures 2 and 3, where, corresponding to each arc-shaped ratchet, the first wall surface 311 is provided with at least two second teeth 42 spaced apart along the length direction of the arc-shaped ratchet. That is, the first wall surface 311 of the housing 31 is provided with at least two second teeth 42 spaced apart along the length direction of the arc-shaped ratchet at the position corresponding to each arc-shaped ratchet. Illustratively, each arc-shaped ratchet corresponds to two, three, or more second teeth 42. Thus, with at least two second teeth 42 corresponding to each arc-shaped ratchet, the cutter 3 can rotate more reliably and smoothly.

[0064] Referring to Figure 11, further, in one embodiment, at least two second teeth 43 are arranged along the diameter direction of the cutter 3. In other words, the line connecting at least two second teeth 43 passes through the center of the cutter 3 and coincides with one of the diameter lines of the cutter 3. This arrangement results in more uniform force application, easier operation, and similar force on different second teeth 43, leading to approximately the same wear.

[0065] Referring to Figure 11, in one embodiment, the first wall surface 311 is provided with two second teeth 43, one of which is located on the circumferential edge of the first wall surface 311. This arrangement facilitates positioning so that the first tooth 41 and the second tooth 43 can quickly engage.

[0066] Furthermore, to prevent misalignment of the cutter 3 during rotation, as shown in Figures 1-6, 9, and 10, a guide structure 6 is provided between the first groove wall 21 of the mounting groove 20 and the first wall surface 311 of the housing 31 to guide the rotation of the cutter 3. The guide structure 6 includes a first guide portion on the first groove wall 21 and a second guide portion on the first wall surface 311 of the housing 31. The first guide portion and / or the second guide portion extend along the rotation direction of the cutter 3. When the cutter 3 is constrained within the mounting groove 20, the first guide portion and the second guide portion engage in a guiding fit. Thus, through the sliding engagement of the first guide portion and the second guide portion, misalignment of the cutter 3 during rotation can be prevented, making the rotation of the cutter 3 more reliable.

[0067] In another embodiment provided in this application, a first guide portion is provided on each of the two first groove walls 21 of the mounting groove 20, and a second guide portion is provided on each of the housing 31 at the position corresponding to the first guide portion. Alternatively, a first guide portion may be provided on only one groove wall.

[0068] Furthermore, one of the first guide portion and the second guide portion is a sliding portion, and the other of the first guide portion and the second guide portion is a groove 62, which extends along the rotation direction of the cutter 3. Schematic, the first guide portion is a sliding portion, and the second guide portion is a groove. Alternatively, as shown in Figures 2, 9, and 10, the first guide portion is a groove 62, and the second guide portion is a sliding portion. That is, grooves 62 are provided on both first groove walls 21.

[0069] In one embodiment, the aforementioned groove 62 is a recess formed on the first groove wall 21 or the first wall surface 311. In another embodiment, the aforementioned groove 62 is formed between two adjacent arc-shaped ratchet teeth (first teeth 41), and a sliding part is provided on the first wall surface 311 of the housing 31. When the cutter 3 is constrained within the mounting groove 20, the groove 62 and the sliding part are in sliding engagement. Thus, through the sliding engagement of the groove 62 and the sliding part, misalignment of the cutter 3 during rotation can be avoided, making the rotation of the cutter 3 more reliable.

[0070] In this embodiment, as shown in Figures 3 to 6, the sliding part is a protrusion 61 that is adapted to the groove 62 and extends along the length direction of the groove 62. Alternatively, the sliding part may be a slider or a protrusion.

[0071] There are various possible locations for the second guide portion. In this example, the second guide portion is located at the outer edge of the first wall surface 311. For instance, the second guide portion is a protrusion 61 located at the outer edge of the first wall surface 311.

[0072] Furthermore, as shown in Figure 4, the second guide portion is disposed between the outer edge of the first wall surface 311 and the receiving groove 310, so that the second guide portions of the cutters 3 with different cutting specifications are adapted to the same first guide portion, and the convex strip 61 of the cutter in Figure 3 and the convex strip 61 of the cutter in Figure 4 are adapted to the same sliding groove 62.

[0073] In addition to the above-described embodiments, this application also provides an embodiment in which the second tooth 42 on the housing 31 of the cutter 3 is an arc-shaped ratchet, and the first tooth 41 is a single tooth with only one tooth portion or a double tooth with two tooth portions.

[0074] Since the cutter 3 is detachably installed in the mounting slot 20, to facilitate the installation and removal of the cutter 3, as shown in Figures 7 and 8, the handle 1 is equipped with a locking mechanism 7 that locks or unlocks the two clamping plates 2. When the two clamping plates 2 are locked, the first tooth 41 and the second tooth 42 engage. Thus, when the cutter 3 is inserted into the mounting slot 20, the cutter 3 can be held in place by locking the two clamping plates 2. At this time, the first tooth 41 and the second tooth 42 engage, facilitating the rotation of the cutter 3.

[0075] To facilitate gripping the pipe cutting tool 100, in this embodiment, the handle 1 includes two gripping parts sequentially joined along the axial direction of the cutter 3. A clamping plate 2 is fixedly connected to the first end 13 of each gripping part. A locking mechanism 7 is provided on the two gripping parts to lock or unlock them. Thus, locking or unlocking the two gripping parts corresponds to locking or unlocking the two clamping plates 2. When the two clamping plates 2 are locked, the cutter 3 is prevented from detaching from the mounting slot 20 after installation, improving the reliability of the cutter 3 after installation.

[0076] In this embodiment, the clamping plate 2 extends along the length of the gripping portion. Furthermore, the gripping portion is fixedly connected to the clamping plate 2 or integrally formed therefrom.

[0077] As shown in Figures 7-10, the two gripping parts are defined as the first gripping part 11 and the second gripping part 12, respectively. As shown in Figures 7 and 8, the first gripping part 11 has a mounting groove 111 formed on the side opposite to the second gripping part 12. The locking mechanism 7 includes a mounting base 71, an elastic member 72, and a rotating arm 73. The mounting base 71 is fixedly connected to the second gripping part 12, and the mounting base 71 is provided with an extension foot 711 that extends into the mounting groove 111. The elastic member 72 is constrained within the mounting groove 111, and the elastic member 72 has a clearance hole 720 for the extension foot 711 to pass through. The portion of the extension foot 711 that passes through the clearance hole 720 is defined as the first portion 7111.

[0078] The first end of the rotating arm 73 is rotatably connected to the first part 7111 via a mounting shaft 74, which extends radially along the cutter 3. The first end of the rotating arm 73 has an abutment portion 731 extending toward the elastic member 72. When the two gripping parts are locked, the abutment portion 731 abuts against the elastic member 72, thereby causing the two gripping parts to be in abutting state. When the two gripping parts are unlocked, the abutment portion 731 is disengaged from the elastic member 72.

[0079] Thus, when it is necessary to lock the two clamping plates 2, it is only necessary to turn the second arm end of the rotating arm 73 so that the abutting part 731 on the rotating arm 73 abuts against the elastic member 72. At this time, the elastic member 72 abuts against the first gripping part 11, so that the first gripping part 11 and the second gripping part 12 are in abutting state, which can axially position the cutter 3 located in the mounting groove 20. When it is necessary to release the locking state of the two clamping plates 2, it is only necessary to rotate the rotating arm 73 so that the abutting part 731 on the rotating arm 73 is disengaged from the state of abutting against the elastic member 72. At this time, the first gripping part 11 and the second gripping part 12 can be separated, so that the cutter 3 can be inserted into the mounting groove 20.

[0080] Specifically, in this embodiment, the rotating arm 73 includes an abutment portion 731 and a main body portion 732 connected to each other, and the first arm end and the second arm end can also be regarded as the two ends of the main body portion 732.

[0081] Referring to Figure 12, in one embodiment, to facilitate unlocking, the rotating arm 73 is further provided with a raised portion 733, which is located at the second arm end of the rotating arm 73. In other words, in this embodiment, the rotating arm 73 includes an abutment portion 731, a main body portion 732, and a raised portion 733. The main body portion 732 is located between the abutment portion 731 and the raised portion 733. The raised portion 733 extends obliquely upward from the end of the main body portion 732 that is relatively away from the abutment portion 731, that is, it extends in a direction away from the bottom of the mounting groove 111, and has an angle with the main body portion 732. It can be understood that the main body portion 732 may be partially or completely parallel to the bottom of the mounting groove 111. This arrangement facilitates the rotation of the rotating arm 73 by operating the raised portion 733, thereby unlocking the arm.

[0082] Furthermore, to facilitate the storage and handling of the pipe cutting tool 100, the raised portion 733, exemplarily, does not protrude from the opening of the mounting groove 111. It may be lower than or parallel to the opening of the mounting groove 111.

[0083] The aforementioned elastic member 72 is an elastic plate, and the aforementioned clearance hole 720 is formed on the elastic plate. The elastic plate has an arched portion 721 that arches away from the mounting base 71. When the elastic member 72 and the abutting portion 731 are in abutting state, the arched portion 721 abuts against the abutting portion 731.

[0084] In other embodiments, the elastic element 72 may also include a plurality of springs arranged sequentially along the circumference of the extension foot 711, the plurality of springs surrounding to form a clearance hole 720.

[0085] In one embodiment, the two gripping parts are separate components. In this embodiment, the second ends of the two gripping parts are rotatably connected by a connecting shaft 14, which extends radially along the cutter 3, i.e., the connecting shaft 14 and the mounting shaft 74 are aligned axially.

[0086] It should be noted that the axial direction of the cutter 3 is the same as the axial direction of the pipe being cut, and is defined as the second direction B. The radial direction of the cutter 3 is the same as the radial direction of the pipe being cut, and is defined as the third direction C.

[0087] 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.

[0088] 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 scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A pipe cutting tool, characterized by, The device includes a handle with a mounting portion for accommodating cutters of different cutting specifications. The cutter is detachably mounted on the mounting portion. The cutter includes a housing with a receiving groove for accommodating a tube. A blade for cutting the tube is mounted on the peripheral wall of the receiving groove.

2. The pipe cutting tool of claim 1, wherein, The cutter is rotatably constrained to the mounting portion about its own axis.

3. The pipe cutting tool of claim 2, wherein, The cutter is arranged to rotate relative to the handle in a first direction, either clockwise or counterclockwise.

4. The pipe cutting tool of claim 3, wherein, The mounting part is a mounting groove for inserting the cutter. The mounting groove includes a first groove wall. The wall surface of the housing corresponding to the first groove wall is defined as the first wall surface. A transmission structure is matched between the first groove wall and the first wall surface to enable the cutter to rotate along the first direction.

5. The pipe cutting tool of claim 4, wherein, The transmission structure is a ratchet structure, which includes a first tooth disposed on the first groove wall and a second tooth disposed on the first wall surface. One of the first tooth and the second tooth is an arc-shaped ratchet formed by connecting multiple teeth arranged sequentially along the rotation direction of the cutter. When the cutter is constrained within the mounting groove, the first tooth and the second tooth mesh.

6. The pipe cutting tool of claim 5, wherein, There are two first groove walls, which are arranged at intervals relative to each other along the axial direction of the cutter, and at least one first groove wall is provided with the first tooth.

7. The pipe cutting tool of claim 6, wherein, The first end of the handle is provided with two clamps arranged at a relatively distance from each other. The inner walls of the two clamps facing each other are both the first groove walls. The two clamps and the first end of the handle together form the mounting groove. The clamps are provided with clearance grooves that are coaxially arranged with the receiving groove and avoid the pipe. The clearance groove and the receiving groove are respectively provided with openings for the pipe to be inserted.

8. The pipe cutting tool of claim 7, wherein, At least one of the first groove walls is provided with first teeth arranged at intervals along the radial direction of the tube.

9. The pipe cutting tool of claim 8, wherein, The first tooth is an arc-shaped ratchet, and the second tooth is a single tooth consisting of only one tooth portion; or, the first tooth is a single tooth consisting of only one tooth portion, and the second tooth is an arc-shaped ratchet.

10. The pipe cutting tool of claim 8, wherein, The first tooth is an arc-shaped ratchet, and for each arc-shaped ratchet, the first wall surface is provided with at least two second teeth arranged at intervals along the length direction of the arc-shaped ratchet.

11. The pipe cutting tool of claim 10, wherein, At least two of the second teeth are arranged along the diameter direction of the cutter.

12. The pipe cutting tool of claim 8, wherein, The first tooth is an arc-shaped ratchet, and a groove is formed between two adjacent arc-shaped ratchets. A sliding part is provided on the first wall surface that slides in cooperation with the groove. When the cutter is constrained in the mounting groove, the groove and the sliding part slide in cooperation.

13. The pipe cutting tool of claim 12, wherein, The sliding part is a protrusion that is adapted to the groove and extends along the length of the groove.

14. The pipe cutting tool of claim 7, wherein, A guide structure for guiding the rotation of the cutter is matched between the first groove wall and the first wall surface. The guide structure includes a first guide portion disposed on the first groove wall and a second guide portion disposed on the first wall surface. The first guide portion and / or the second guide portion extend along the rotation direction of the cutter. When the cutter is constrained in the mounting groove, the first guide portion and the second guide portion guide and cooperate.

15. The pipe cutting tool of claim 14, wherein, There are two first groove walls, which are arranged at intervals relative to each other along the axial direction of the cutter. Each of the two first groove walls is provided with a first guide portion, and the housing is provided with a second guide portion at the position corresponding to the first guide portion.

16. The pipe cutting tool of claim 15, wherein, One of the first guide portion and the second guide portion is a sliding portion, and the other of the first guide portion and the second guide portion is a groove, which extends along the rotation direction of the cutter.

17. The pipe cutting tool of claim 15, wherein, The second guide portion is disposed at the outer edge of the first wall surface; or, the second guide portion is disposed between the outer edge of the first wall surface and the receiving groove, so that the second guide portions of the cutters of different cutting specifications can be adapted to the same first guide portion.

18. The pipe cutting tool of any one of claims 7 to 17, wherein, The handle is provided with a locking mechanism that locks or unlocks the two clamps. When the two clamps are locked, the first tooth and the second tooth engage.

19. The pipe cutting tool of claim 18, wherein, The handle includes two gripping parts that are sequentially joined along the axis of the cutter. Each gripping part has a clamping plate fixedly connected to its first end. The locking mechanism is provided on the two gripping parts to lock or unlock them.

20. The pipe cutting tool of claim 19, wherein, The two gripping parts are defined as a first gripping part and a second gripping part, respectively. The first gripping part has a mounting groove formed on the side opposite to the second gripping part. The locking mechanism includes: The mounting base is fixedly connected to the second gripping part, and the mounting base is provided with an extension foot that extends into the assembly groove; An elastic element is constrained within the mounting groove. The elastic element has a clearance hole for the extension leg to pass through. The portion of the extension leg that passes through the clearance hole is defined as the first portion. The rotating arm has a first arm end that is rotatably connected to the first part via a mounting shaft extending radially along the cutter. The first arm end of the rotating arm has an abutment portion extending toward the elastic member. When the two gripping parts are locked, the abutment portion abuts against the elastic member, thereby causing the two gripping parts to be in an abutment state. When the two gripping parts are unlocked, the abutment portion is disengaged from the elastic member.

21. The pipe cutting tool of claim 20, wherein, The second arm end of the rotating arm is provided with a raised portion.

22. The pipe cutting tool of claim 19, wherein, The second ends of the two grips are rotatably connected by a connecting shaft that extends radially along the cutter.

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