Cutter

Abstract

A cutter and a cutter assembly. The cutter comprises: a first handle (1), which is provided with a support portion (11); and a blade (2), which is disposed on the first handle (1) and arranged to be movable towards or away from the support portion (11), wherein a receiving slot (5) having an opening (51) for an article to be cut (4) to enter is formed between the blade (2) and the support portion (11); and a V-shaped blade edge (21) is formed on the side of the blade (2) facing the support portion (11), a tip portion of the blade edge (21) facing the support portion (11). The article to be cut (4) is progressively cut under a gripping force of a user, thereby improving the cutting efficiency.

Description

cutter

[0001] Related applications

[0002] This application claims priority to Chinese patent application filed on March 21, 2025, with application number 202520518783.6, entitled "Cutting Knife", 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 cutter for cutting PVC pipes. Background Technology

[0004] PVC pipes are usually manufactured with fixed length specifications. However, due to the complexity and diversity of the application scenarios, the required length of the pipes varies during installation and use. Therefore, the pipes need to be cut before use.

[0005] Traditional pipe cutting methods lack specialized tools, often relying on cutting tools directly. However, this is time-consuming and labor-intensive. To address this, a pipe cutter was proposed that uses the user's hand to clamp the pipe and gradually cut it. However, this method is relatively expensive, requires significant force, and has low cutting efficiency. Summary of the Invention

[0006] According to various embodiments of this application, a cutting blade that improves cutting efficiency is provided.

[0007] This application provides a cutting tool, including a first handle with a support portion; a blade disposed on the first handle and arranged to move toward or away from the support portion, a receiving groove with a front opening for a cutting element to enter is formed between the blade and the support portion, and a V-shaped cutting edge is formed on the side of the blade facing the support portion, with the tip of the cutting edge facing the support portion.

[0008] In one embodiment, the support is a groove with an opening facing the blade.

[0009] In one embodiment, the first handle has a cavity and a slot communicating with the cavity. Part of the slot is located on the support. A rotating shaft is provided in the cavity. Part of the blade is inserted into the cavity from the slot and mounted on the rotating shaft.

[0010] The aforementioned slot allows the blade to extend out of the slot when it rotates upward relative to the first handle. When the blade rotates downward relative to the first handle, the cutting edge of the blade can be at least partially concealed within the slot.

[0011] In one embodiment, the cutter further includes a second handle for driving the blade toward or away from the support, the first end of the second handle being rotatably connected to the first handle, and the second handle being connected to the blade via a transmission assembly.

[0012] In one embodiment, the cutting element is a PVC pipe, and the contact point where the blade contacts the wall of the PVC pipe is the cutting point. There are two cutting points, spaced apart along the length of the blade. Thus, during the cutting process, the presence of two cutting points means that force only needs to be applied to these two points, making cutting more effortless and avoiding the problem of excessive cutting effort associated with three or more cutting points.

[0013] In one embodiment, the cutting edge includes a first cutting segment and a second cutting segment connected sequentially from front to back. The junction of the first and second cutting segments is the tip. The included angle between the first and second cutting segments is α, which satisfies the condition: 145° ≤ α ≤ 165°. Thus, by using the aforementioned range of included angle α, the cutting edge has two cutting points with the PVC pipe wall during the cutting process, avoiding the problem of increased cutting effort caused by three or more cutting points.

[0014] In one embodiment, the included angle α is 155°.

[0015] In one embodiment, the length of the first cutting segment is greater than the length of the second cutting segment.

[0016] In one embodiment, the first cutting edge has two first sides that gradually slope away from each other from front to back along its own thickness direction, and the second cutting edge has two second sides that gradually slope away from each other from back to front along its own thickness direction. The rear end of the first side is connected to the front end of the corresponding second side. This ensures the strength of the tip, allowing for more reliable cutting through the PVC pipe wall during the initial cut.

[0017] In one embodiment, the thickness of the PVC pipe is 1.73mm-3.91mm, and the outer diameter of the PVC pipe is 10.29mm-60.32mm.

[0018] Compared with related technologies, the cutting blade provided in this application adopts a V-shaped blade. During the cutting process, the tip first pierces the cutting workpiece, and then the blade is rotated to continuously cut the workpiece from the piercing point. The whole cutting process is convenient and improves cutting efficiency.

[0019] This application also discloses a cutting tool assembly, including the aforementioned cutting tool and a cutting element. The cutting tool includes a first handle and a blade. A support portion is provided on the first handle. The blade is disposed on the first handle and arranged to move towards or away from the support portion. A receiving groove with a front opening is formed between the blade and the support portion for the cutting element to enter. A V-shaped cutting edge is formed on the side of the blade facing the support portion, with the tip of the cutting edge facing the support portion. The cutting element is a PVC pipe. The contact point where the cutting edge contacts the wall of the PVC pipe is the cutting point. There are two cutting points, which are spaced apart along the length of the cutting edge.

[0020] In one embodiment, the blade includes a first blade segment and a second blade segment connected sequentially from front to back. The point where the first blade segment and the second blade segment connect is the tip. The included angle between the first blade segment and the second blade segment is α, and the included angle α satisfies: 145°≤α≤165°.

[0021] In one embodiment, the included angle α is 155°.

[0022] In one embodiment, the length of the first cutting segment is greater than the length of the second cutting segment.

[0023] In one embodiment, the first cutting segment has two first sides that gradually tilt away from each other from the front end of the first side to the rear end of the first side along its own thickness direction, and the second cutting segment has two second sides that gradually tilt away from each other from the rear end of the second side to the front end of the second side along its own thickness direction, with the rear end of the first side connected to the front end of the corresponding second side.

[0024] In one embodiment, the thickness of the PVC pipe is 1.73mm-3.91mm, and the outer diameter of the PVC pipe is 10.29mm-60.32mm.

[0025] 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

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

[0027] Figure 1 is a schematic diagram of a 2-inch PVC pipe located in the cutter receiving groove according to an embodiment of this application.

[0028] Figure 2 is a schematic diagram of the structure in Figure 1 where the tip of the cutter is inserted into the PVC pipe.

[0029] Figure 3 is a schematic diagram of the structure in Figure 2 where both the first and second cutting segments are in contact with the PVC pipe.

[0030] Figure 4 is a schematic diagram of the structure in Figure 1 where the tip of the cutter protrudes through the PVC pipe.

[0031] Figure 5 is a schematic diagram of the structure of a 1-1 / 4 inch PVC pipe located in a receiving groove in another embodiment of this application.

[0032] Figure 6 is a schematic diagram of the structure in Figure 5 where both the first and second cutting segments are in contact with the PVC pipe.

[0033] Figure 7 is a schematic diagram of the structure in Figure 5 where both the first cutting edge and the tip are in contact with the PVC pipe.

[0034] Figure 8 is a schematic diagram of the structure in Figure 5 where the tip of the PVC pipe protrudes.

[0035] Figure 9 is a partial structural schematic diagram of a cutter according to an embodiment of this application.

[0036] Figure 10 is a schematic diagram of a cutter cutting a 1.5-inch PVC pipe in one embodiment of this application.

[0037] Figure 11 is a schematic diagram of a cutter cutting a 1-inch PVC pipe in one embodiment of this application.

[0038] Figure 12 is a partial structural schematic diagram of Figure 9.

[0039] Figure 13 is a schematic diagram of the blade in Figure 9.

[0040] Figure 14 is a structural schematic diagram of the blade in Figure 11 from another angle.

[0041] Reference numerals: 1. First handle; 10. Chamber; 11. Support; 12. Shaft; 13. Slot; 2. Blade; 21. Cutting edge; 210. Tip; 211. First cutting segment; 2111. First side; 2111a. Front end of first side; 2111b. Rear end of first side; 212. Second cutting segment; 2121. Second side; 2121a. Front end of second side; 2121b. Rear end of second side; 3. Second handle; 4. PVC pipe; 5. Receiving groove; 51. Opening; 6. Cutting point; 7. Transmission assembly. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] As shown in Figures 1-14, this application discloses a cutting tool. The cutting tool includes a first handle 1 and a blade 2. The first handle 1 has a support portion 11. The blade 2 is disposed on the first handle 1 and is arranged to move towards or away from the support portion 11. Furthermore, a receiving groove 5 with a front opening 51 is formed between the blade 2 and the support portion 11 for the cutting material to enter. A V-shaped cutting edge 21 is formed on the side of the blade 2 facing the support portion 11, with the tip 210 of the cutting edge 21 facing the support portion 11.

[0048] Understandably, the cutter uses a V-shaped blade 21. During the cutting process, the tip 210 first pierces the workpiece, and then the blade 2 rotates to continuously cut the workpiece from the piercing point. The whole cutting process is convenient and improves cutting efficiency.

[0049] In this embodiment, as shown in FIG12, the support portion 11 is a groove with an opening facing the blade 2.

[0050] As shown in Figures 9 and 12, the first handle 1 has a chamber 10, and a slot 13 communicating with the chamber 10 is provided in the first handle 1. Part of the slot 13 is located on the support part 11. A rotating shaft 12 is provided in the chamber 10. Part of the blade 2 is inserted into the chamber 10 through the slot 13 and is mounted on the rotating shaft 12. The presence of the slot 13 allows the blade 2 to extend out of the slot 13 when it rotates upward relative to the first handle 1. When the blade 2 rotates downward relative to the first handle 1, the cutting edge 21 on the blade 2 can be at least partially hidden in the slot 13.

[0051] Furthermore, as shown in Figures 1-10, the cutter also includes a second handle 3 for moving the blade 2 closer to or away from the support 11. The first end of the second handle 3 is rotatably connected to the first handle 1, and the second handle 3 is connected to the blade 2 via a transmission assembly 7. Thus, by rotating the second handle 3 closer to or away from the first handle 1, the blade 2 can be moved relative to the first handle 1.

[0052] The structure of the aforementioned transmission component 7 can be any structure found in related technologies, and will not be described in detail in this embodiment.

[0053] In this embodiment, the aforementioned cutting component is a PVC pipe 4, with a thickness of 1.73mm-3.91mm and an outer diameter of 10.29mm-60.32mm. The PVC pipe dimensions are illustrative, such as 2 inches, 1.5 inches, 1.25 inches, 1 inch, 3 / 4 inch, 1 / 2 inch, 3 / 8 inch, 1 / 4 inch, 1 / 8 inch, etc.

[0054] Figures 1-4 show the cutting process of a 2-inch PVC pipe (4). Figures 5-8 show the cutting process of a 1-1 / 4-inch PVC pipe (4). Figure 10 shows the cutting process of a 1-1 / 2-inch PVC pipe (4). Figure 11 shows the cutting process of a 1-inch PVC pipe (4).

[0055] In this embodiment, at least a portion of the groove matches the wall of the PVC pipe 4 and is arc-shaped. This provides better support for the PVC pipe 4 and makes it easier to maintain the stability of the PVC pipe 4 during the cutting process.

[0056] As shown in Figures 1-8, 10, and 11, the contact point where the blade 21 contacts the wall of the PVC pipe 4 is the cutting point 6. There are two cutting points 6, spaced apart along the length of the blade 21. In other words, during the entire cutting process, the blade 21 contacts the wall of the PVC pipe 4 at two cutting points 6. Therefore, with two cutting points, the blade only needs to apply force to these two points, making the cutting more effortless and avoiding the increased effort required for cutting at three or more points.

[0057] It should be noted that the position of cutting point 6 changes during the cutting process.

[0058] As shown in Figures 13 and 14, the blade 21 includes a first blade segment 211 and a second blade segment 212 connected sequentially from front to back. The point where the first blade segment 211 and the second blade segment 212 connect is the tip 210. The included angle between the first blade segment 211 and the second blade segment 212 is α, and the included angle α satisfies: 145°≤α≤165°.

[0059] By using the aforementioned range of included angle α, the blade 21 has two cutting points 6 with the wall of the PVC pipe 4 during the cutting process, thus avoiding the problem of excessive cutting effort caused by cutting at three or more points.

[0060] Furthermore, the included angle α is 155°. This better ensures that the blade 21 has two cutting points 6 with the wall of the PVC pipe 4 during the cutting process.

[0061] Furthermore, the length of the first cutting segment 211 is greater than the length of the second cutting segment 212. This further ensures that the blade 21 avoids having three or more cutting points 6 with the PVC pipe 4 during the cutting process.

[0062] As shown in Figures 13 and 14, the first cutting edge 211 has two first side surfaces 2111 along its own thickness direction, which gradually tilt away from each other from the front end 2111a of the first side surface 2111 towards the rear end 2111b of the first side surface 2111. The second cutting edge 212 has two second side surfaces 2121 along its own thickness direction, which gradually tilt away from each other from the rear end 2121b of the second side surface 2121 towards the front end 2121a of the second side surface 2121. The rear end 211b of the first side surface 2111 is connected to the front end 212a of the corresponding second side surface 2121.

[0063] In some embodiments, the thickness of the first cutting segment 211 gradually increases along the direction from the front end 2111a of the first side 2111 to the rear end 2111b of the first side 2111, and the thickness of the second cutting segment 212 gradually decreases along the direction from the front end 2121a of the second side 2121 to the rear end 2121b of the second side 212.

[0064] This ensures the strength of the tip 210, allowing it to more reliably cut through the wall of the PVC pipe 4 during the initial cut.

[0065] 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.

[0066] 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 cutting tool, characterized in that, include: A first handle, wherein a support portion is provided on the first handle; A blade is disposed on the first handle and is arranged to move toward or away from the support. A receiving groove with a front opening is formed between the blade and the support for the cutting element to enter. A V-shaped cutting edge is formed on the side of the blade facing the support, and the tip of the cutting edge faces the support.

2. The cutter according to claim 1, wherein, The support portion is a groove with an opening facing the blade.

3. The cutter according to claim 1, wherein, The first handle has a cavity, and the first handle has a slot that communicates with the cavity. Part of the slot is located on the support. A rotating shaft is provided in the cavity. Part of the blade is inserted into the cavity from the slot and mounted on the rotating shaft.

4. The cutter according to claim 1, wherein, The cutter also includes a second handle for driving the blade to move toward or away from the support. The first end of the second handle is rotatably connected to the first handle, and the second handle is connected to the blade via a transmission assembly.

5. The cutter according to any one of claims 1-4, wherein, The cutting element is a PVC pipe. The contact point where the blade contacts the wall of the PVC pipe is the cutting point. There are two cutting points, which are spaced apart along the length of the blade.

6. The cutter according to claim 5, wherein, The blade comprises a first blade segment and a second blade segment connected sequentially from front to back. The point where the first blade segment and the second blade segment connect is the tip. The included angle between the first blade segment and the second blade segment is α, and the included angle α satisfies: 145°≤α≤165°.

7. The cutter according to claim 6, wherein, The included angle α is 155°.

8. The cutter according to claim 6, wherein, The length of the first cutting segment is greater than the length of the second cutting segment.

9. The cutter according to claim 6, wherein, The first cutting edge has two first sides that gradually tilt away from each other from the front end to the rear end of the first side along its own thickness direction. The second cutting edge has two second sides that gradually tilt away from each other from the rear end to the front end of the second side along its own thickness direction. The rear end of the first side is connected to the front end of the corresponding second side.

10. The cutter according to claim 5, wherein, The thickness of the PVC pipe is 1.73mm-3.91mm, and the outer diameter of the PVC pipe is 10.29mm-60.32mm.

11. A cutting tool assembly, comprising a cutting tool as described in any one of claims 1-10 and a cutting element. Its features are, The cutter includes a first handle and a blade. A support portion is provided on the first handle. The blade is disposed on the first handle and arranged to move towards or away from the support portion. A receiving groove with a front opening is formed between the blade and the support portion for the cutting material to enter. A V-shaped cutting edge is formed on the side of the blade facing the support portion, with the tip of the cutting edge facing the support portion. The cutting element is a PVC pipe. The contact point where the blade contacts the wall of the PVC pipe is the cutting point. There are two cutting points, which are spaced apart along the length of the blade.

12. The cutter assembly according to claim 11, wherein, The blade comprises a first blade segment and a second blade segment connected sequentially from front to back. The point where the first blade segment and the second blade segment connect is the tip. The included angle between the first blade segment and the second blade segment is α, and the included angle α satisfies: 145°≤α≤165°.

13. The cutter assembly according to claim 12, wherein, The included angle α is 155°.

14. The cutter assembly according to claim 12, wherein, The length of the first cutting segment is greater than the length of the second cutting segment.

15. The cutter assembly according to claim 12, wherein, The first cutting edge has two first sides that gradually tilt away from each other from the front end to the rear end of the first side along its own thickness direction. The second cutting edge has two second sides that gradually tilt away from each other from the rear end to the front end of the second side along its own thickness direction. The rear end of the first side is connected to the front end of the corresponding second side.

16. The cutter assembly of claim 11, wherein, The thickness of the PVC pipe is 1.73mm-3.91mm, and the outer diameter of the PVC pipe is 10.29mm-60.32mm.

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