Single-action function-switchable knife

Abstract

Disclosed in the present invention is a single-action function-switchable knife. A knife handle comprises a receiving cavity having a front opening, the receiving cavity extends along a knife handle axis, and a rack portion is provided on the side of the knife handle adjacent to the opening. A slider is slidably mounted within the receiving cavity. A blade assembly is rotatably mounted at the front end of the slider by means of a pin shaft portion. A gear portion is provided on a blade holder of the blade assembly, and the angle of the blade assembly is switched by means of meshing transmission between the gear portion and the rack portion. When a button drives the blade assembly to move from a blade retracted position to a blade cutting position, the blade assembly partially extends out of the opening along the knife handle axis, allowing the knife to be used as a cutting knife at this time. When the button drives the blade assembly to move from the blade cutting position to a blade switching position, the blade assembly is rotated relative to the slider by means of the meshing transmission between the gear portion and the rack portion until the blade assembly reaches a position perpendicular to the knife handle axis, allowing the knife to be used as a scraper at this time. The knife has fewer components, more convenient assembly, a simpler structure, and lower manufacturing costs.

Description

A single-action switchable cutting tool Technical Field

[0001] This invention relates to the technical field of cutting tools, and in particular to a cutting tool with a single-action switchable function. Background Technology

[0002] Utility knives typically have a cutting edge parallel to the axis of the handle or case and are used for cutting. Scrapers, on the other hand, typically have a blade perpendicular or orthogonal to the axis of the handle and are used for scraping surfaces, such as scraping paint off a window or scraping other materials from a flat surface. Generally, utility knives and scrapers are two separate hand tools. This usually requires purchasing and storing both separate tools. Technical issues

[0003] With the development of cutting tool technology, technicians have designed deformable cutting tools that combine the functions of a cutting tool and a scraper. See Chinese Patent Announcement No. CN117719008B. The blade assembly of this deformable cutting tool can be used as a cutting tool in the first state (i.e., the blade assembly extends out of the handle along the axis of the handle) and as a scraper in the second state (i.e., the blade assembly is perpendicular to the axis of the handle). However, this deformable cutting tool has many internal parts in the handle, resulting in high production costs. In addition, the internal parts of the tool are relatively bulky, making assembly in the small space of the handle inconvenient. Therefore, it needs to be improved. Technical solutions

[0004] The purpose of this invention is to provide a single-action switchable function cutting tool with fewer parts, easier assembly, simpler structure, and lower production cost. In addition, the function of the cutting tool can be switched by pushing a button with a single action, making operation more convenient.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a single-action switchable function cutting tool, comprising...

[0006] The knife handle has a receiving cavity with an opening at the front end, the receiving cavity extending along the axial direction of the knife handle, and a rack portion is provided on the side of the knife handle adjacent to the opening;

[0007] A slider, which is slidably mounted within the receiving cavity;

[0008] The blade assembly is rotatably mounted on the front end of the slider via a pin. The blade holder of the blade assembly is equipped with a gear, and the angle of the blade assembly is switched by the meshing of the gear and the rack.

[0009] The locking mechanism includes a locking element and a resilient reset element. The locking element is telescopically installed inside the slider and can move between a locked position and an unlocked position. Under the action of the resilient reset element, the locking element tends to move towards the locked position. When the locking element is in the locked position, the position of the slider and the blade assembly along the axis of the tool holder is locked by the locking element, and the rotation angle of the blade assembly is also locked by the locking element. The locking element is provided with a button that extends out of the tool holder. When the locking element is pressed to the unlocked position by pressing the button, the locking element releases the locking of the position of the slider and the blade assembly along the axis of the tool holder and the rotation angle of the blade assembly.

[0010] When the button moves the blade assembly from the blade retracted position to the blade cutting position, the blade assembly extends out of the opening along the axis of the handle, and the blade is used as a cutting blade. When the button moves the blade assembly from the blade cutting position to the blade switching position, the blade assembly rotates around the pin shaft axis perpendicular to the axis of the handle under the meshing transmission of the gear and rack, and the blade is used as a scraper.

[0011] Furthermore, the blade assembly has at least a first positioning groove and a second positioning groove on its tool holder. The first positioning groove and the second positioning groove are distributed with the pin shaft as the axis of rotation, and the central angle formed by the first positioning groove and the second positioning groove is 90°. The front end of the locking member is provided with a first positioning part. When the first positioning part is aligned and inserted into the first positioning groove, the blade assembly is positioned along the axis of the tool holder. When the first positioning part is aligned and inserted into the second positioning groove, the blade assembly is positioned along the direction perpendicular to the axis of the tool holder.

[0012] Furthermore, the tool holder is provided with at least a first locking groove, a second locking groove, and a third locking groove, which are arranged sequentially at intervals along the axis of the tool holder. The locking member is provided with a second positioning part. When the second positioning part is aligned and inserted into the first locking groove, the blade assembly and the slider are locked in the blade retracted position. When the second positioning part is aligned and inserted into the second locking groove, the blade assembly and the slider are locked in the blade cutting position. When the second positioning part is aligned and inserted into the third locking groove, the blade assembly and the slider are locked in the blade switching position.

[0013] Furthermore, the rack portion is integrally formed on the inner wall of the handle, and the rack portion is disposed on one side of the handle opening along the axial direction of the handle.

[0014] Furthermore, the gear portion is a sector gear, and the axis of the sector gear is coaxial with the axis of the pin portion.

[0015] Furthermore, the central angle of the sector gear is 90°.

[0016] Furthermore, the slider has a mounting groove for accommodating the locking member, the locking member being telescopically disposed within the mounting groove, and an elastic reset member abutting between the inner end face of the mounting groove and the locking member. Under the action of the elastic reset member, the locking member tends to move towards the locked position. By pressing the button, the locking member can overcome the elastic force of the elastic reset member and move to the unlocked position.

[0017] Furthermore, the button is located at the rear end of the locking member, the tool holder has a groove extending along the axis of the tool holder, the button extends out of the tool holder through the groove and can move along the groove, and the second positioning part is located on at least one side of the left and right sides of the button.

[0018] Furthermore, when the blade assembly moves from the blade retracted position to the blade cutting position, the gear portion and the rack portion do not contact each other, so that the blade assembly maintains the direction of the handle axis; during the process of the blade assembly moving from the blade cutting position to the blade switching position, the gear portion begins to contact and mesh with the rack portion to switch the angle of the blade assembly.

[0019] Furthermore, the tool holder is provided with a guide rail for guiding the slider to move along the axis of the tool holder, and the side end of the tool holder adjacent to the opening is provided with a clearance channel that connects to the opening, the clearance channel providing space for the blade assembly to switch angles. Beneficial effects

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. The single-action switchable function cutting tool of the present invention has fewer parts, is easier to assemble, has a simpler structure, and lower production costs. In addition, the function of the cutting tool can be switched by pushing a button with a single action, which is more convenient to operate. When the button moves the blade assembly from the blade retracted position to the blade cutting position, the blade assembly extends out of the opening along the axis of the tool holder, and the tool is used as a cutting tool. When the button moves the blade assembly from the blade cutting position to the blade switching position, the blade assembly rotates around the pin shaft as the rotation axis under the meshing transmission of the gear and rack parts, and is used as a scraper.

[0022] 2. The single-action switchable cutting tool of the present invention can realize the synchronous locking of the sliding position of the slider and the rotation angle of the blade assembly through the locking mechanism. In other words, the locking mechanism can realize the synchronous locking of the sliding position of the blade assembly and the rotation angle of the blade assembly, thereby locking the blade assembly in the current desired position. The locking of the sliding position of the slider and the rotation angle of the blade assembly can be released by pressing the button, which is relatively convenient to operate. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the blade assembly of the present invention when the blade is in the retracted position.

[0024] Figure 2 is a schematic diagram of the blade assembly of the present invention when it is located in the blade cutting position.

[0025] Figure 3 is a schematic diagram of the blade assembly of the present invention when it is in the blade switching position.

[0026] Figure 4 is an exploded view of the present invention.

[0027] Figure 5 is a schematic diagram of the rack and gear parts of the present invention.

[0028] Figure 6 is a schematic diagram of the installation structure of the slider and blade assembly of the present invention.

[0029] Figure 7 is a schematic diagram of the split structure of the slider and blade assembly of the present invention.

[0030] Figure 8 is a schematic diagram of the blade assembly of the present invention.

[0031] Figure 9 is an internal cross-sectional view of the slider of the present invention.

[0032] Figure 10 is a schematic diagram of the separate structure of the locking mechanism and the slider of the present invention.

[0033] In the diagram: 10. Tool holder; 11. Receiving cavity; 12. Rack section; 13. First locking groove; 131. Additional locking groove A; 14. Second locking groove; 141. Additional positioning groove B; 15. Third locking groove; 16. Slide groove; 17. Guide rail; 18. Clearance channel; 20. Slider; 21. First block; 211. Mounting groove; 212. Mounting hole; 22. Second block; 221. Through hole; 30. Blade assembly; 31. Tool holder; 311. Pin section; 312. Gear section; 313. First positioning groove; 314. Second positioning groove; 32. Blade; 40. Locking mechanism; 41. Locking element; 411. Button; 412. First positioning part; 413. Second positioning part; 42. Elastic reset element. The best embodiment of the present invention

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation and positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing the invention 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 should not be construed as limiting the specific scope of protection of this invention. It should also be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. For ease of understanding, in this application, "front end" refers to the side of the handle opening, and "rear end" refers to the side away from the handle opening.

[0036] As shown in Figures 1-10, a single-action switchable cutting tool includes a handle 10, a slider 20, a blade assembly 30, and a locking mechanism 40. The handle 10 has a receiving cavity 11 with an opening at the front end, which extends along the axial direction of the handle 10. The slider 20 is slidably installed in the receiving cavity 11, that is, the slider 20 is slidably disposed in the handle 10 along the axial direction of the handle 10. The handle 10 is provided with a guide rail 17 to guide the slider 20 to move along the axial direction of the handle 10. The blade assembly 30 is rotatably installed at the front end of the slider 20 via a pin 311. Specifically, the front end of the slider 20 is provided with a mounting hole 212, and the pin 311 of the blade assembly 30 is rotatably installed in the mounting hole 212. The blade assembly 30 includes a tool holder 31 and a blade 32 fixedly installed on the tool holder 31. The side end of the handle 10 adjacent to the opening is provided with a clearance channel 18 communicating with the opening, which provides space for the blade assembly 30 to switch angles.

[0037] The handle 10 is provided with a rack portion 12 near the opening; the blade assembly 30 has a gear portion 312 on the blade holder 31, and the angle of the blade assembly 30 is switched by the meshing of the gear portion 312 and the rack portion 12; that is, the linear driving force of the blade assembly 30 along the axis of the handle 10 is converted into a rotational driving force by the meshing of the gear portion 312 and the rack portion 12. Furthermore, when the blade assembly 30 moves from the blade retracted position to the blade cutting position, the gear portion 312 and the rack portion 12 are not in contact, so that the blade assembly 30 maintains the axis of the handle 10; during the process of the blade assembly 30 moving from the blade cutting position to the blade switching position, the gear portion 312 begins to contact and mesh with the rack portion 12 to switch the angle of the blade assembly 30.

[0038] The locking mechanism 40 is used to synchronously lock the moving position of the slider 20 and the rotation angle of the blade assembly 30. That is, the locking mechanism 40 is used to lock the blade assembly 30 at the desired angle and position. The locking mechanism 40 includes a locking member 41 and an elastic reset member 42. The locking member 41 is telescopically mounted inside the slider 20. Furthermore, the telescopic direction of the locking member 41 is perpendicular to the axis of the handle 10. The locking member 41 can move between a locked position and an unlocked position. The locking member 41 is located within the elastic reset member 42. Under the action of 2, there is a tendency to move towards the locked position. When the locking member 41 is in the locked position, the position of the slider 20 and the blade assembly 30 along the axis of the handle 10 is locked by the locking member 41. At the same time, the rotation angle of the blade assembly 30 is also locked by the locking member 41. The locking member 41 is provided with a button 411 that extends out of the handle 10. When the locking member 41 is pressed to the unlock position by the button 411, the locking member 41 can release the locking of the slider 20 and the blade assembly 30 along the axis of the handle 10 and the rotation angle of the blade assembly 30.

[0039] When button 411 moves the blade assembly 30 from the blade retracted position to the blade cutting position, the blade assembly 30 extends out of the opening along the axis of the handle 10, and the blade is used as a cutting blade. When button 411 moves the blade assembly 30 from the blade cutting position to the blade switching position, the blade assembly 30 rotates around the pin shaft 311 as the axis of rotation under the meshing transmission of the gear part 312 and the rack part 12, and the blade is used as a scraper.

[0040] In some embodiments, the blade assembly 30 has at least a first positioning groove 313 and a second positioning groove 314 on its tool holder 31. The first positioning groove 313 and the second positioning groove 314 are distributed with the pin portion 311 as the rotation axis, and the central angle formed by the first positioning groove 313 and the second positioning groove 314 is 90°. The front end of the locking member 41 is provided with a first positioning part 412. When the first positioning part 412 is aligned and inserted into the first positioning groove 313, the blade assembly 30 is positioned in the direction along the axis of the tool holder 10. When the first positioning part 412 is aligned and inserted into the second positioning groove 314, the blade assembly 30 is positioned in the direction perpendicular to the axis of the tool holder 10.

[0041] Of course, other positioning grooves can also be provided on the tool holder 31, such as a third positioning groove provided between the first positioning groove 313 and the second positioning groove 314. The central angle formed by the third positioning groove and the first positioning groove 313 can be any angle from 0° to 90°. Preferably, the central angle formed by the third positioning groove and the first positioning groove 313 is 45°. When the first positioning part 412 is aligned and inserted into the third positioning groove, the blade assembly 30 is positioned at a position at a 45° angle to the axis of the tool holder 10.

[0042] In some embodiments, the handle 10 is provided with at least a first locking groove 13, a second locking groove 14, and a third locking groove 15. The first locking groove 13, the second locking groove 14, and the third locking groove 15 are arranged sequentially at intervals along the axial direction of the handle 10, wherein the third locking groove 15 is located on the side adjacent to the opening of the handle 10. The locking member 41 is provided with a second positioning part 413. When the second positioning part 413 is aligned with and inserted into the first locking groove 13, the blade assembly 30 and the slider 20 are locked in the blade retracted position; when the second positioning part 413 is aligned with and inserted into the second locking groove 15, the blade assembly 30 and the slider 20 are locked in the blade retracted position. When the first locking slot 14 is engaged, the blade assembly 30 and the slider 20 are locked in the blade cutting position. When the second positioning part 413 is aligned and inserted into the third locking slot 15, the blade assembly 30 and the slider 20 are locked in the blade switching position. During the continuous forward pushing of the button 411, the second positioning part 413 will pass through the first locking slot 13, the second locking slot 14 and the third locking slot 15 in sequence. When the button 411 is released, the locking member 41 moves to the locking position under the action of the elastic reset member 42, so that the second positioning part 413 is aligned and inserted into the corresponding locking slot.

[0043] In this application, an additional locking groove A131 and an additional positioning groove B141 may also be provided in the handle 10. The additional locking groove B141 is located between the second locking groove 14 and the third locking groove 15, and the additional positioning groove A131 is located between the second locking groove 14 and the first locking groove 13. When the second positioning part 413 is locked in the additional locking groove A131, the blade 32 extends out of the handle 10 and the length of the blade 32 extending out of the handle 10 is less than the length when the second positioning part 413 is inserted into the second locking groove 14. At this time, the tool is also used as a cutting tool, but the length of the blade 32 extending out of the handle 10 is shorter than when it is in the position of the second locking groove 14. When the second positioning part 413 is locked in the additional locking groove B141, the blade 32 extends out of the handle 10 and the angle formed by the blade 32 and the axis of the handle 10 is between 0° and 90°, for example, 45°. At this time, the tool is also used as a cutting tool, but the angle of the blade 32 has changed.

[0044] In some embodiments, the rack portion 12 is integrally formed on the inner wall of the handle 10, and the rack portion 12 is disposed on one side of the opening of the handle 10 along the axial direction of the handle 10. Specifically, the rack portion 12 is integrally injection molded on the inner wall of the handle 10. This arrangement can reduce the number of parts and reduce costs.

[0045] In some embodiments, the gear portion 312 is a sector gear, and the axis of the sector gear is coaxial with the axis of the pin portion 311. Further, the central angle of the sector gear is 90°. The purpose of this arrangement is that when the gear portion 312 starts to contact the rack portion 12 and engages with the end of the rack portion 12, the blade assembly 30 can just switch from the direction along the axis of the handle 10 to the direction perpendicular to the axis of the handle 10, thereby switching the tool from a cutting blade to a scraper.

[0046] In some embodiments, the slider 20 has a mounting groove 211 for accommodating the locking member 41. The locking member 41 is telescopically disposed in the mounting groove 211. The elastic reset member 42 abuts against the inner end face of the mounting groove 211 and the locking member 41. Under the action of the elastic reset member 42, the locking member 41 tends to move towards the locked position, that is, to make the locking member 41 tend to remain in the locked position. By pressing the button 411, the locking member 41 can overcome the elastic force of the elastic reset member 42 and move to the unlocked position.

[0047] In some embodiments, the slider 20 includes a first block 21 and a second block 22 that are detachably connected as a single unit. A mounting groove 211 is disposed in the first block 21, and the second block 22 is provided with a through hole 221 for the button 411 and the second positioning part 413 to extend out of the mounting groove. In this embodiment, the first block 21 and the second block 22 are connected by fasteners. By designing the slider 20 in a split manner, it is convenient to assemble the locking member 41 and the elastic reset member 42.

[0048] In some embodiments, the button 411 is disposed at the rear end of the locking member 41, the handle 10 is provided with a groove 16 extending along the axial direction of the handle 10, the button 411 extends out of the handle 10 through the groove 16 and can move along the groove 16, and the second positioning part 413 is disposed on at least one side of the left and right sides of the button 411.

[0049] Specifically, the second positioning part 413 is symmetrically arranged on both sides of the button 411, and the first locking groove 13, the second locking groove 14 and the third locking groove 15 are symmetrically arranged on both sides of the slide groove 16 for positioning and cooperating with the second positioning part 413. By setting two sets of second positioning parts 413 and locking grooves that match the second positioning parts 413, the moving position of the slider 20 can be locked more stably and firmly.

[0050] In this invention, the locking member 41 has a strip-shaped structure. A first positioning part 412 is disposed at the front end of the locking member 41, and a second positioning part 413 is disposed at the rear end of the locking member 41. Two sets of the second positioning parts 413 are symmetrically arranged on the left and right sides of the button 411. The inner end of the locking member 41 is provided with a guide groove for limiting the position of the elastic reset member 42. The elastic reset member 42 is at least partially disposed within the guide groove. The elastic reset member 42 is preferably a spring. When the locking member 41 moves to the locked position, both the first positioning part 412 and the second positioning part 413 are in a locked state. When the locking member 41 moves to the unlocked position, both the first positioning part 412 and the second positioning part 413 are in an unlocked state.

[0051] The operating principle of this invention: The process of pushing button 411 from the tail end to the front end of slide groove 16 includes at least the following two stages: In the first stage, the blade assembly 30 moves from the blade retracted position to the blade cutting position, and the cutter switches from the retracted state to the cutting state. At this time, button 411 is released, and the first positioning part 412 locks into the first positioning groove 313. Simultaneously, the second positioning part 413 and the second locking groove 14 lock into each other, locking the blade assembly 30 and the slider 20 in the cutting state. The cutter is then used as a cutting tool. In this stage, the gear part 312 and the rack part 12 are not in contact. In the second stage, button 411 is pushed forward again to move the blade assembly 30... When the blade moves from the cutting position to the blade switching position, the blade assembly 30 of the tool switches from the cutting blade state to the scraper state. During this stage, the gear part 312 begins to contact and mesh with the rack part 12, so that the blade assembly 30 rotates 90° about the pin part 311 as the rotation axis, so that the blade assembly 30 is set perpendicular to the axis of the tool holder 10. The blade assembly 30 and the slider 20 are locked in the blade switching position by the positioning cooperation of the second positioning part 413 and the first locking groove 13. At the same time, the blade assembly 30 is locked in a position perpendicular to the axis of the tool holder 10 by the positioning cooperation of the first positioning part 412 and the second positioning groove 314. At this time, the tool is used as a scraper.

[0052] In summary, the present invention has the following beneficial effects:

[0053] 1. The single-action switchable cutting tool of the present invention has fewer parts, is easier to assemble, has a simpler structure, and lower production costs. The blade assembly 30 of the tool can be switched by pushing the button 411 with a single action, which is more convenient to operate. When the button 411 moves the blade assembly 30 from the blade retracted position to the blade cutting position, the blade assembly 30 extends out of the opening along the axis of the handle 10, and the tool is used as a cutting tool. When the button 411 moves the blade assembly 30 from the blade cutting position to the blade switching position, the blade assembly 30 rotates around the pin 311 as the axis of rotation under the meshing transmission of the gear part 312 and the rack part 12, and rotates to a direction perpendicular to the axis of the handle 10. At this time, the tool is used as a scraper.

[0054] 2. The single-action switchable cutting tool of the present invention can realize the synchronous locking of the moving position of the slider 20 and the rotation angle of the blade assembly 30 through the locking mechanism 40. That is to say, the locking mechanism 40 can realize the synchronous locking of the moving position of the blade assembly 30 and the rotation angle of the blade assembly 30, thereby locking the blade assembly 30 in the current desired position. The locking of the moving position of the slider 20 and the rotation angle of the blade assembly 30 can be released by pressing the button 411.

[0055] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A single-action switchable cutting tool, characterized in that: include The knife handle (10) has a receiving cavity (11) with an opening at the front end. The receiving cavity (11) extends along the axial direction of the knife handle (10). The knife handle (10) has a rack portion (12) on the side adjacent to the opening. A slider (20) is slidably mounted in the receiving cavity (11); The blade assembly (30) is rotatably mounted on the front end of the slider (20) via a pin (311). A gear (312) is provided on the tool holder (31) of the blade assembly (30). The angle of the blade assembly (30) is switched by meshing the gear (312) with the rack (12). The locking mechanism (40) includes a locking member (41) and an elastic reset member (42). The locking member (41) is telescopically installed inside the slider (20). The locking member (41) can move between the locked position and the unlocked position. Under the action of the elastic reset member (42), the locking member (41) tends to move towards the locked position. When the locking member (41) is in the locked position, the position of the slider (20) and the blade assembly (30) along the axis of the handle (10) is locked by the locking member (41). At the same time, the rotation angle of the blade assembly (30) is also locked by the locking member (41). The locking member (41) is provided with a button (411) that extends out of the handle (10). When the locking member (41) is pressed to the unlocked position by the button (411), the locking member (41) releases the locking of the position of the slider (20) and the blade assembly (30) along the axis of the handle (10) and the rotation angle of the blade assembly (30). When the button (411) moves the blade assembly (30) from the blade retracted position to the blade cutting position, the blade assembly (30) extends out of the opening along the axis of the handle (10), and the tool is used as a cutting tool at this time; when the button (411) moves the blade assembly (30) from the blade cutting position to the blade switching position, the blade assembly (30) rotates with the pin shaft (311) as the rotation axis under the meshing transmission of the gear part (312) and the rack part (12), and rotates to a direction perpendicular to the axis of the handle (10) at this time, and the tool is used as a scraper.

2. The single-action switchable cutting tool according to claim 1, characterized in that: The blade assembly (30) has at least a first positioning groove (313) and a second positioning groove (314) on its tool holder (31). The first positioning groove (313) and the second positioning groove (314) are distributed with the pin shaft (311) as the axis of rotation, and the central angle formed by the first positioning groove (313) and the second positioning groove (314) is 90°. The front end of the locking member (41) is provided with a first positioning part (412). When the first positioning part (412) is aligned and inserted into the first positioning groove (313), the blade assembly (30) is positioned along the axis of the tool holder (10). When the first positioning part (412) is aligned and inserted into the second positioning groove (314), the blade assembly (30) is positioned along the axis perpendicular to the axis of the tool holder (10).

3. A single-action switchable cutting tool according to claim 2, characterized in that: The handle (10) is provided with at least a first locking groove (13), a second locking groove (14) and a third locking groove (15). The first locking groove (13), the second locking groove (14) and the third locking groove (15) are arranged sequentially at intervals along the axis of the handle (10). The locking member (41) is provided with a second positioning part (413). When the second positioning part (413) is aligned and inserted into the first locking groove (13), the blade assembly (30) and the slider (20) are locked in the blade retracted position. When the second positioning part (413) is aligned and inserted into the second locking groove (14), the blade assembly (30) and the slider (20) are locked in the blade cutting position; when the second positioning part (413) is aligned and inserted into the third locking groove (15), the blade assembly (30) and the slider (20) are locked in the blade switching position.

4. A single-action switchable cutting tool according to claim 1, characterized in that: The rack portion (12) is integrally formed on the inner wall of the handle (10), and the rack portion (12) is arranged on the side of the opening of the handle (10) along the axial direction of the handle (10).

5. A single-action switchable cutting tool according to claim 1, characterized in that: The gear section (312) is a sector gear and the axis of the sector gear is coaxial with the axis of the pin section (311).

6. A single-action switchable cutting tool according to claim 5, characterized in that: The central angle of the sector gear is 90°.

7. A single-action switchable cutting tool according to claim 1, characterized in that: The slider (20) has a mounting groove (211) for accommodating the locking member (41). The locking member (41) is telescopically disposed in the mounting groove (211). The elastic reset member (42) abuts against the inner end face of the mounting groove (211) and the locking member (41). Under the action of the elastic reset member (42), the locking member (41) tends to move towards the locked position. By pressing the button (411), the locking member (41) can overcome the elastic force of the elastic reset member (42) and move to the unlocked position.

8. A single-action switchable cutting tool according to claim 3, characterized in that: The button (411) is located at the rear end of the locking member (41). The tool holder (10) is provided with a slide groove (16) extending along the axis of the tool holder (10). The button (411) extends out of the tool holder (10) through the slide groove (16) and can move along the slide groove (16). The second positioning part (413) is located on at least one side of the left and right sides of the button (411).

9. A single-action switchable cutting tool according to claim 1, characterized in that: When the blade assembly (30) moves from the blade retracted position to the blade cutting position, the gear part (312) and the rack part (12) do not contact each other, so that the blade assembly (30) maintains the axial direction of the handle (10); during the process of the blade assembly (30) moving from the blade cutting position to the blade switching position, the gear part (312) begins to contact and mesh with the rack part (12) to switch the angle of the blade assembly (30).

10. A single-action switchable cutting tool according to any one of claims 1-9, characterized in that: The handle (10) is provided with a guide rail (17) for the guide slider (20) to move along the axis of the handle (10). The side end of the handle (10) near the opening is provided with a clearance channel (18) that connects to the opening. The clearance channel (18) provides space for the blade assembly (30) to switch angles.

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