Cutter with single-action switchable function

Abstract

A tool handle is provided with a containing cavity with an opening in the front end, the containing cavity extends in the axis direction of the tool handle, and a rack part is arranged on the side, close to the opening, of the tool handle; the sliding block is installed in the containing cavity in a sliding mode. The blade assembly is rotatably installed at the front end of the sliding block through a pin shaft part, a gear part is arranged on a tool rest of the blade assembly, and the angle of the blade assembly is switched through meshing transmission of the gear part and the rack part. When the button drives the blade assembly to move from the blade retraction position to the blade cutting position, the blade assembly partially extends out of the opening in the axis direction of the cutter handle, and the cutter is used as a cutting knife. When the button drives the blade assembly to move from the blade cutting position to the blade switching position, the blade assembly rotates to the direction perpendicular to the axis of the cutter handle relative to the sliding block through meshing transmission of the gear part and the rack part, at the moment, the cutter is used as a scraper, and the cutter is few in spare and accessory parts, more convenient to assemble, simpler in structure and lower in production cost.

Description

Technical Field

[0001] The invention relates to the technical field of cutting tools, in particular to a cutting tool with a single action and switchable functions. Background Art

[0002] A utility knife typically has a blade cutting edge parallel to the axis of the handle or housing and is used for cutting. On the other hand, a scraper typically has a blade perpendicular or orthogonal to the axis of the handle and is used for scraping surfaces, such as scraping paint from a window or other materials from a flat surface. Typically, a utility knife and a scraper are two separate hand tools. This usually requires purchasing and storing two separate tools.

[0003] With the development of tool technology, technicians have designed a deformable tool that has both cutting and scraping functions, see Chinese patent authorization announcement No. CN117719008B. The blade assembly of the deformable tool can be used as a cutting knife in a first state (i.e., the blade assembly extends out of the handle along the axis of the handle), and can be used as a scraper in a second state (i.e., the blade assembly is perpendicular to the axis of the handle). However, the handle of the deformable tool has many internal parts and the production cost is high. In addition, the tool is relatively bulky inside, and it is inconvenient to assemble in the small space of the handle, so it needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a single-action switchable function tool with fewer parts, more convenient assembly, simpler structure, and lower production cost. In addition, the function switching of the tool can be achieved by pushing a button with a single action, which is more convenient to operate.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: a single-action switchable tool, comprising The knife handle has a accommodating cavity with a front end opening, the accommodating cavity extends along the axial direction of the knife handle, and a rack portion is provided on one side of the knife handle adjacent to the opening; A slider is slidably mounted in the accommodating cavity; The blade assembly is rotatably mounted on the front end of the slider through a pin shaft, and a gear portion is provided on the tool holder of the blade assembly. The angle of the blade assembly is switched through meshing transmission between the gear portion and the rack portion; The locking mechanism includes a locking member and an elastic reset member. The locking member is telescopically installed in the slider. The locking member can move between a locking position and an unlocking position. The locking member has a tendency to move toward the locking position under the action of the elastic reset member. When the locking member is in the locking position, the position of the slider and the blade assembly along the axis of the handle is locked by the locking member, and the rotation angle of the blade assembly is also locked by the locking member. The locking member is provided with a button extending out of the handle. When the locking member is pressed to the unlocking position by the button, the locking member releases the locking of the position of the slider and the blade assembly along the axis of the handle and the rotation angle of the blade assembly; When the button drives the blade assembly to move from the blade retracted position to the blade cutting position, the blade assembly partially extends out of the opening along the axis direction of the handle, and the tool is used as a cutting knife at this time; when the button drives the blade assembly to move from the blade cutting position to the blade switching position, the blade assembly rotates with the pin shaft as the rotation axis to a direction perpendicular to the axis direction of the handle under the meshing transmission of the gear part and the rack part, and the tool is used as a scraper.

[0006] Furthermore, the blade assembly is provided with at least a first positioning groove and a second positioning groove on the tool holder, the first positioning groove and the second positioning groove are distributed with the pin shaft portion as the rotation axis, and the central angle formed by the first positioning groove and the second positioning groove is 90°, and the front end of the locking member is provided with a first positioning portion, when the first positioning portion is aligned with and inserted into the first positioning groove, the blade assembly is positioned along the axis direction of the handle; when the first positioning portion is aligned with and inserted into the second positioning groove, the blade assembly is positioned along a position perpendicular to the axis direction of the handle.

[0007] Furthermore, at least a first locking groove, a second locking groove and a third locking groove are provided in the knife handle, and the first locking groove, the second locking groove and the third locking groove are arranged in sequence and spaced apart along the axial direction of the knife handle. A second positioning portion is provided on the locking member, and when the second positioning portion is aligned with and inserted into the first locking groove, the blade assembly and the slider are locked in the blade retracted position; when the second positioning portion is aligned with and inserted into the second locking groove, the blade assembly and the slider are locked in the blade cutting position; when the second positioning portion is aligned with and inserted into the third locking groove, the blade assembly and the slider are locked in the blade switching position.

[0008] Furthermore, the rack portion is integrally formed on the inner wall of the handle, and the rack portion is arranged on one side of the handle opening along the axis direction of the handle.

[0009] Furthermore, the gear portion is a sector gear and the axis of the sector gear is coaxially arranged with the axis of the pin shaft portion.

[0010] Furthermore, the central angle of the sector gear is 90°.

[0011] Furthermore, the slider has an installation groove for accommodating a locking piece, the locking piece is telescopically arranged in the installation groove, and the elastic return piece is arranged between the inner end surface of the installation groove and the locking piece. Under the action of the elastic return piece, the locking piece has a tendency to move toward the locking position, and by pressing the button, the locking piece can overcome the elastic force of the elastic return piece and move to the unlocking position.

[0012] Furthermore, the button is arranged at the rear end of the locking piece, the handle is provided with a slide groove extending along the axis direction of the handle, the button extends from the handle through the slide groove and can move along the slide groove, and the second positioning portion is arranged on at least one side of the left and right sides of the button.

[0013] Furthermore, when the blade assembly moves from the blade retracted position to the blade cutting position, the gear portion is not in contact with the rack portion, so that the blade assembly maintains the axial direction of the handle; in the process of the blade assembly moving from the blade cutting position to the blade switching position, the gear portion begins to contact with the rack portion and engages for transmission to switch the angle of the blade assembly.

[0014] Furthermore, a guide rail is provided in the knife handle to guide the slider to move along the axis direction of the knife handle, and a side end of the knife handle adjacent to the opening is provided with an escape channel connected to the opening, and the escape channel provides space for the blade assembly to switch angles.

[0015] In summary, the present invention has the following beneficial effects: 1. The single-action switchable function tool of the present invention has fewer parts and components, is more convenient to assemble, has a simpler structure, and has a lower production cost. In addition, the function switching of the tool can be realized by pushing a button with a single action, and the operation is relatively convenient, that is, when the button drives the blade assembly to move from the blade retracted position to the blade cutting position, the blade assembly partially extends out of the opening along the axis direction of the handle, and the tool is used as a cutting knife; when the button drives the blade assembly to move from the blade cutting position to the blade switching position, the blade assembly rotates with the pin shaft portion as the rotation axis to a direction perpendicular to the axis direction of the handle under the meshing transmission of the gear portion and the rack portion, and the tool is used as a scraper; 2. The single-action switchable function tool of the present invention can achieve synchronous locking of the moving position of the slider and the rotation angle of the blade assembly through the locking mechanism, that is, the moving position of the blade assembly and the rotation angle of the blade assembly can be synchronously locked through the locking mechanism, so that the blade assembly can be locked in the current required position, and the moving position of the slider and the rotation angle of the blade assembly can be unlocked by pressing a button, which is relatively convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the blade assembly of the present invention when the blade is in the retracted position.

[0017] Figure 2It is a schematic structural diagram of the blade assembly of the present invention when it is in the blade cutting position.

[0018] Figure 3 It is a structural schematic diagram of the blade assembly of the present invention when it is located at the blade switching position.

[0019] Figure 4 It is an exploded view of the present invention.

[0020] Figure 5 It is a schematic structural diagram of the rack portion and the gear portion of the present invention.

[0021] Figure 6 It is a schematic diagram of the installation structure of the slider and the blade assembly of the present invention.

[0022] Figure 7 It is a schematic diagram of the split structure of the slider and the blade assembly of the present invention.

[0023] Figure 8 It is a schematic structural diagram of the blade assembly of the present invention.

[0024] Fig. 9 It is an internal cross-sectional view of the slider of the present invention.

[0025] Fig.10 It is a schematic diagram of the separate structure of the locking mechanism and the sliding block of the present invention.

[0026] In the figure: 10, knife handle; 11, accommodating cavity; 12, rack portion; 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, avoidance channel; 20, slider; 21, first block; 211, mounting groove; 212, mounting hole; 22, second block; 221, through hole; 30, blade assembly; 31, knife holder; 311, pin shaft portion; 312, gear portion; 313, first positioning groove; 314, second positioning groove; 32, blade; 40, locking mechanism; 41, locking member; 411, button; 412, first positioning portion; 413, second positioning portion; 42, elastic reset member. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] In the description of the present invention, it should be noted that the directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the directional and positional relationships are based on the directional or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific directional, be constructed and operated in a specific directional, and cannot be understood as limiting the specific protection scope of the present invention. It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. For ease of understanding, the front end in the present application refers to the side of the handle opening, and the rear end refers to the side away from the handle opening.

[0029] like Figure 1-Figure 10 As shown, a single-action switchable function tool comprises a handle 10, a slider 20, a blade assembly 30 and a locking mechanism 40. The handle 10 has a accommodating cavity 11 with a front end opening, and the accommodating cavity 11 extends along the axial direction of the handle 10. The slider 20 is slidably installed in the accommodating cavity 11, that is, the slider 20 is slidably arranged in the handle 10 along the axial direction of the handle 10. The handle 10 is provided with a guide rail 17 for guiding 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 through a pin shaft portion 311. Specifically, a mounting hole 212 is provided at the front end of the slider 20, and the pin shaft portion 311 of the blade assembly 30 is rotatably installed in the mounting hole 212. The blade assembly 30 comprises 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 an avoidance channel 18 connected to the opening, and the avoidance channel 18 provides space for the blade assembly 30 to switch angles.

[0030] A rack portion 12 is provided on one side of the knife handle 10 adjacent to the opening; a gear portion 312 is provided on the knife holder 31 of the blade assembly 30, and the angle of the blade assembly 30 is switched by the meshing transmission of the gear portion 312 and the rack portion 12; that is, the linear driving force of the blade assembly 30 along the axial direction of the knife handle 10 is converted into a rotational driving force by the meshing transmission of the gear portion 312 and the rack portion 12, and further, when the blade assembly 30 moves from the blade retracted position to the blade cutting position, the gear portion 312 is not in contact with the rack portion 12, so that the blade assembly 30 maintains the axial direction of the knife handle 10; in 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.

[0031] 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 current required angle and the current required position. The locking mechanism 40 includes a locking member 41 and an elastic reset member 42. The locking member 41 is telescopically installed in the slider 20. Further, the telescopic direction of the locking member 41 is perpendicular to the axial direction of the handle 10. The locking member 41 can move between the locked position and the unlocked position. The locking member 41 is in the elastic reset member 42. 2, when the locking member 41 is in the locked position, the position of the slider 20 and the blade assembly 30 along the axial direction of the knife handle 10 is locked by the locking member 41, and 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 extending out of the knife handle 10. When the locking member 41 is pressed to the unlocking position by the button 411, the locking member 41 can release the locking of the slider 20 and the blade assembly 30 along the axial direction of the knife handle 10 and the rotation angle of the blade assembly 30.

[0032] When the button 411 drives the blade assembly 30 to move from the blade retracted position to the blade cutting position, the blade assembly 30 partially extends out of the opening along the axial direction of the handle 10, and the tool is used as a cutting knife at this time; when the button 411 drives the blade assembly 30 to move from the blade cutting position to the blade switching position, the blade assembly 30 rotates with the pin shaft portion 311 as the rotation axis to a direction perpendicular to the axial direction of the handle 10 under the meshing transmission of the gear portion 312 and the rack portion 12, and the tool is used as a scraper at this time.

[0033] In some embodiments, at least a first positioning groove 313 and a second positioning groove 314 are provided on the tool holder 31 of the blade assembly 30. The first positioning groove 313 and the second positioning groove 314 are distributed with the pin shaft 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 portion 412. When the first positioning portion 412 is aligned with and inserted into the first positioning groove 313, the blade assembly 30 is positioned along the axial direction of the handle 10; when the first positioning portion 412 is aligned with and inserted into the second positioning groove 314, the blade assembly 30 is positioned along a position perpendicular to the axial direction of the handle 10.

[0034] Of course, other positioning grooves can also be set on the tool holder 31, such as a third positioning groove set 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 of 0°-90°. Preferably, the central angle formed by the third positioning groove and the first positioning groove 313 is 45°. When the first positioning portion 412 is aligned with and inserted into the third positioning groove, the blade assembly 30 is positioned at a position with an angle of 45° to the axis of the handle 10.

[0035] In some embodiments, at least a first locking groove 13, a second locking groove 14 and a third locking groove 15 are provided in the handle 10, and the first locking groove 13, the second locking groove 14 and the third locking groove 15 are arranged in sequence along the axial direction of the handle 10, wherein the third locking groove 15 is arranged on the side adjacent to the opening of the handle 10, and a second positioning portion 413 is provided on the locking member 41, and when the second positioning portion 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 portion 413 is aligned with and inserted into the second locking groove 13, the blade assembly 30 and the slider 20 are locked in the blade retracted position; When the second positioning portion 413 is aligned with and inserted into the third locking groove 15, the blade assembly 30 and the slider 20 are locked in the blade switching position. During the process of the button 411 being continuously pushed forward, the second positioning portion 413 will pass through the first locking groove 13, the second locking groove 14 and the third locking groove 15 in sequence. When the button 411 is released, the locking member 41 moves to the locking position under the action of the elastic return member 42, so that the second positioning portion 413 is aligned with and inserted into the corresponding locking groove.

[0036] In the present application, an additional locking groove A131 and an additional positioning groove B141 can also be set in the handle 10, wherein the additional locking groove B141 is set between the second locking groove 14 and the third locking groove 15, and the additional positioning groove A131 is set between the second locking groove 14 and the first locking groove 13. When the second positioning portion 413 is locked in the additional locking groove A131, the blade 32 partially 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 portion 413 is inserted into the second locking groove 14. At this time, the tool is also used as a cutting knife, but the length of the blade 32 extending out of the handle 10 is shortened compared to the position of the second locking groove 14. When the second positioning portion 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°-90°, for example 45°. At this time, the tool is also used as a cutting knife, but the angle of the blade 32 has changed.

[0037] In some embodiments, the rack portion 12 is integrally formed on the inner wall of the handle 10, and the rack portion 12 is arranged on the opening side 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. Through this arrangement, the number of spare parts can be reduced and the cost can be reduced.

[0038] In some embodiments, the gear portion 312 is a sector gear and the axis of the sector gear is coaxially arranged with the axis of the pin shaft 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 from contacting the rack portion 12 to meshing 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, so that the tool switches from a cutting knife to a scraper.

[0039] In some embodiments, the slider 20 has an installation groove 211 for accommodating a locking member 41. The locking member 41 is telescopically arranged in the installation groove 211. The elastic return member 42 is disposed between the inner end surface of the installation groove 211 and the locking member 41. The locking member 41 has a tendency to move toward the locked position under the action of the elastic return member 42, that is, the locking member 41 has a tendency to remain in the locked position. By pressing the button 411, the locking member 41 can overcome the elastic force of the elastic return member 42 and move to the unlocked position.

[0040] In some embodiments, the slider 20 includes a first block 21 and a second block 22 that are detachably connected as a whole, the mounting groove 211 is set 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 portion 413 to extend out of the mounting groove. In this embodiment, the first block 21 and the second block 22 are connected by fasteners, and the slider 20 is designed to be split to facilitate the assembly of the locking member 41 and the elastic reset member 42.

[0041] In some embodiments, the button 411 is arranged at the rear end of the locking member 41, and the handle 10 is provided with a slide groove 16 extending along the axial direction of the handle 10. The button 411 extends from the handle 10 through the slide groove 16 and can move along the slide groove 16. The second positioning portion 413 is arranged on at least one side of the left and right sides of the button 411.

[0042] Specifically, the second positioning portion 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 portion 413. By setting two groups of second positioning portions 413 and locking grooves matching the second positioning portions 413, the moving position of the slider 20 can be locked more stably and firmly.

[0043] In the present invention, the locking member 41 is a strip-shaped structure, the first positioning portion 412 is arranged at the front end of the locking member 41, the second positioning portion 413 is arranged at the rear end of the locking member 41, and the second positioning portion 413 is provided with two groups and 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 elastic return member 42, and the elastic return member 42 is at least partially arranged in the guide groove. The elastic return member 42 is preferably a spring. When the locking member 41 moves to the locked position, the first positioning portion 412 and the second positioning portion 413 are both in the locked state, and when the locking member 41 moves to the unlocked position, the first positioning portion 412 and the second positioning portion 413 are both in the unlocked state.

[0044] The use principle of the present invention: the process of pushing the button 411 from the rear end of the slide slot 16 to the front end of the slide slot 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 tool switches from the storage state to the cutting knife state. At this time, the button 411 is released, and the first positioning portion 412 is locked with the first positioning groove 313. At the same time, the second positioning portion 413 and the second locking groove 14 are locked, so that the blade assembly 30 and the slider 20 are locked in the cutting knife state. At this time, the tool is used as a cutting knife. In this stage, the gear portion 312 is not in contact with the rack portion 12. In the second stage, the button 411 is pushed forward to make the blade assembly 30 move. 0 moves from the blade cutting position to the blade switching position, and the blade assembly 30 of the tool switches from the cutting blade state to the scraper state. In this stage, the gear portion 312 begins to contact and mesh with the rack portion 12 to transmit, so that the blade assembly 30 rotates 90° with the pin shaft portion 311 as the rotation axis, so that the blade assembly 30 is arranged perpendicular to the axis of the handle 10, and the second positioning portion 413 and the first locking groove 13 are positioned to lock the blade assembly 30 and the slider 20 in the blade switching position. At the same time, the first positioning portion 412 and the second positioning groove 314 are positioned to lock the blade assembly 30 in a position perpendicular to the axis of the handle 10. At this time, the tool is used as a scraper.

[0045] In summary, the present invention has the following beneficial effects: 1. The single-action switchable function tool of the present invention has fewer parts and components, is more convenient to assemble, has a simpler structure, and has a lower production cost. The blade assembly 30 of the tool can be switched by pushing the button 411 in a single action, and the operation is relatively convenient, that is, when the button 411 drives the blade assembly 30 to move from the blade retracted position to the blade cutting position, the blade assembly 30 partially extends out of the opening along the axial direction of the handle 10, and the tool is used as a cutting knife; when the button 411 drives the blade assembly 30 to move from the blade cutting position to the blade switching position, the blade assembly 30 rotates with the pin shaft portion 311 as the rotation axis to a direction perpendicular to the axial direction of the handle 10 under the meshing transmission of the gear portion 312 and the rack portion 12, and the tool is used as a scraper; 2. The single-action switchable function tool of the present invention can achieve 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, the moving position of the blade assembly 30 and the rotation angle of the blade assembly 30 can be synchronously locked through the locking mechanism 40, so that the blade assembly 30 can be locked at the current required position, and the moving position of the slider 20 and the rotation angle of the blade assembly 30 can be unlocked by pressing the button 411.

[0046] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A single-action switchable tool, characterized in that: include A knife handle (10), wherein the knife handle (10) has a receiving cavity (11) with a front end opening, the receiving cavity (11) extends along the axial direction of the knife handle (10), and a rack portion (12) is provided on one side of the knife handle (10) adjacent to the opening; A slider (20), the slider (20) being slidably mounted in the accommodating cavity (11); A blade assembly (30), the blade assembly (30) is rotatably mounted on the front end of the slider (20) via a pin shaft portion (311), a gear portion (312) is provided on the blade holder (31) of the blade assembly (30), and the angle of the blade assembly (30) is switched by meshing transmission between the gear portion (312) and the rack portion (12); A locking mechanism (40), the locking mechanism (40) comprising a locking member (41) and an elastic reset member (42), the locking member (41) being telescopically mounted in the slider (20), the locking member (41) being capable of moving between a locking position and an unlocking position, the locking member (41) having a tendency to move toward the locking position under the action of the elastic reset member (42), when the locking member (41) is in the locking position, the position of the slider (20) and the blade assembly (30) along the axis direction of the knife handle (10) is locked by the locking member (41), and the rotation angle of the blade assembly (30) is also locked by the locking member (41), the locking member (41) being provided with a button (411) extending out of the knife handle (10), when the locking member (41) is pressed to the unlocking position by the button (411), the locking member (41) is released from locking the position of the slider (20) and the blade assembly (30) along the axis direction of the knife handle (10) and the rotation angle of the blade assembly (30); When the button (411) drives the blade assembly (30) to move from the blade retracting position to the blade cutting position, the blade assembly (30) partially extends out of the opening along the axial direction of the handle (10), and the tool is used as a cutting knife; when the button (411) drives the blade assembly (30) to move from the blade cutting position to the blade switching position, the blade assembly (30) rotates with the pin shaft portion (311) as the rotation axis to a direction perpendicular to the axial direction of the handle (10) under the meshing transmission of the gear portion (312) and the rack portion (12), and the tool is used as a scraper.

2. A single-action switchable function tool according to claim 1, characterized in that: The blade assembly (30) is provided with at least a first positioning groove (313) and a second positioning groove (314) on the blade holder (31), the first positioning groove (313) and the second positioning groove (314) are distributed with the pin shaft 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°, and the front end of the locking member (41) is provided with a first positioning portion (412), when the first positioning portion (412) is aligned with and inserted into the first positioning groove (313), the blade assembly (30) is positioned in a position along the axial direction of the knife handle (10); when the first positioning portion (412) is aligned with and inserted into the second positioning groove (314), the blade assembly (30) is positioned in a position perpendicular to the axial direction of the knife handle (10).

3. A single-action switchable function tool according to claim 2, characterized in that: At least a first locking groove (13), a second locking groove (14) and a third locking groove (15) are provided in the knife handle (10); the first locking groove (13), the second locking groove (14) and the third locking groove (15) are arranged in sequence and spaced apart along the axis direction of the knife handle (10); a second positioning portion (413) is provided on the locking member (41); when the second positioning portion (413) is aligned with and inserted into the first locking groove (13), the blade assembly (30) and the slide block (20) are locked in a blade retracted position; When the second positioning portion (413) is aligned with and inserted into the second locking groove (14), the blade assembly (30) and the slider (20) are locked in a blade cutting position; when the second positioning portion (413) is aligned with and inserted into the third locking groove (15), the blade assembly (30) and the slider (20) are locked in a blade switching position.

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

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

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

7. A single-action switchable function tool according to claim 1, characterized in that: The slider (20) has a mounting groove (211) for accommodating a locking member (41); the locking member (41) is telescopically arranged in the mounting groove (211); an elastic reset member (42) is disposed between an inner end surface of the mounting groove (211) and the locking member (41); the locking member (41) has a tendency to move toward a locking position under the action of the elastic reset member (42); and by pressing a button (411), the locking member (41) can overcome the elastic force of the elastic reset member (42) and move to an unlocking position.

8. A single-action switchable function tool according to claim 3, characterized in that: The button (411) is arranged at the rear end of the locking member (41); the knife handle (10) is provided with a slide groove (16) extending along the axial direction of the knife handle (10); the button (411) extends out of the knife handle (10) through the slide groove (16) and can move along the slide groove (16); and the second positioning portion (413) is arranged on at least one of the left and right sides of the button (411).

9. A single-action switchable function tool according to claim 1, characterized in that: When the blade assembly (30) moves from the blade retracting position to the blade cutting position, the gear portion (312) is not in contact with the rack portion (12), so that the blade assembly (30) maintains the axial direction of the handle (10); when the blade assembly (30) moves from the blade cutting position to the blade switching position, the gear portion (312) begins to contact with the rack portion (12) and meshes with the transmission to switch the angle of the blade assembly (30).

10. A single-action switchable function tool according to any one of claims 1 to 9, characterized in that: A guide rail (17) is provided inside the knife handle (10) for guiding the sliding block (20) to move along the axis direction of the knife handle (10), and an escape channel (18) connected to the opening is provided at the side end of the knife handle (10) adjacent to the opening, and the escape channel (18) provides space for the blade assembly (30) to switch angles.

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