cutter

Abstract

The utility model discloses a tool, including lower handle, upper handle, blade and rotating column, lower handle is equipped with lower axle hole and lower arc slot, and lower arc slot has first front end and first rear end. Upper handle is located the upper of lower handle and is equipped with upper axle hole and upper arc slot, and upper arc slot has second front end and second rear end. Rotating column is installed in upper axle hole and lower axle hole. Blade is rotatablely connected with rotating column, and the top surface of blade is equipped with lower limit block, and the bottom surface is equipped with upper limit block, and lower limit block can be slidably installed in lower arc slot, and upper limit block can be slidably installed in upper arc slot. Tool can switch between open state and closed state. In closed state, blade is stacked between lower handle and upper handle, and lower limit block is located first front end of lower arc slot, and upper limit block is located second front end of upper arc slot. In open state, blade rotates to lower handle and upper handle outside, and lower limit block is located first rear end of lower arc slot, and upper limit block is located second rear end of upper arc slot.

Description

Technical Field

[0001] This utility model relates to the field of folding knife technology, and in particular to a cutting tool. Background Technology

[0002] Cutting tools are tools used for cutting and machining in mechanical manufacturing. Outdoor portable knives are generally folding knives. Folding knives mainly consist of a blade that can be screwed into a pivot assembly at the front of the handle. The structure is very complex, inconvenient to operate, and its practicality is limited. Utility Model Content

[0003] The purpose of this utility model is to provide a cutting tool to solve the problems of the prior art.

[0004] To solve the above-mentioned technical problems, the present invention provides a cutting tool, comprising:

[0005] The lower tool holder has a lower shaft hole and a lower arc-shaped groove extending around the lower shaft hole, and the lower arc-shaped groove has a first front end and a first rear end in the circumferential direction;

[0006] An upper tool holder is located above the lower tool holder and has an upper shaft hole and an upper arc-shaped groove extending around the upper shaft hole. The upper shaft hole and the lower shaft hole are coaxially arranged, and the upper arc-shaped groove has a second front end and a second rear end along the circumferential direction.

[0007] A rotating column, which is installed in the upper shaft hole and the lower shaft hole;

[0008] The blade is located between the lower shank and the upper shank and is rotatably connected to the rotating column. The top surface of the blade is provided with a lower limit block and the bottom surface is provided with an upper limit block. The lower limit block is slidably installed in the lower arc-shaped groove and the upper limit block is slidably installed in the upper arc-shaped groove.

[0009] The cutting tool can be switched between an open state and a closed state;

[0010] In the closed state, the blade is stacked between the lower shank and the upper shank, the lower limiting block is located at the first front end of the lower arc-shaped groove, and the upper limiting block is located at the second front end of the upper arc-shaped groove;

[0011] In the open state, the blade rotates outside the lower and upper shanks, the lower limiting block is located at the first rear end of the lower arc-shaped groove, and the upper limiting block is located at the second rear end of the upper arc-shaped groove.

[0012] In one embodiment, the lower limit block is aligned with the upper limit block in the vertical direction;

[0013] In the closed state or the open state, the first front end and the second front end are aligned vertically, and the first rear end and the second rear end are aligned vertically.

[0014] In one embodiment, the cutting tool further includes a locking device connected to the upper tool holder or the lower tool holder;

[0015] In the closed or open state, the locking device can operably lock the upper and lower tool holders.

[0016] In one embodiment, the locking device includes:

[0017] A locking part, which is connected to one of the upper tool holder and the lower tool holder and includes a locking hole;

[0018] A latch, which is movably connected to another of the upper and lower tool holders, wherein in the open or closed state, the latch is located in the lock hole and locks the upper and lower tool holders.

[0019] A biasing element is connected to another part of the upper and lower tool holders and can be used to drive the latch into the lock hole.

[0020] In one embodiment, the locking portion includes a first guide surface and a second guide surface, the first guide surface extending from the front side of the locking portion to the lock hole;

[0021] The second guide surface extends from the rear side of the locking part to the lock hole.

[0022] In one embodiment, the locking device further includes a push button connected to the latch.

[0023] In one embodiment, the biasing element is a spring with one end connected to the push button and the other end connected to another part of the upper and lower tool holders.

[0024] In one embodiment, one of the upper and lower tool holders is provided with a hook;

[0025] The upper tool holder and the lower tool holder are each provided with a stop block;

[0026] In the closed or open state, the stop block blocks the opening of the hook.

[0027] In one embodiment, the hook is connected to the locking part.

[0028] In one embodiment, the upper tool holder includes:

[0029] The lower plate is provided with a downward groove;

[0030] The upper plate is stacked and connected to the lower plate and is provided with a recessed upper sliding groove. The bottom wall of the upper sliding groove is provided with a through hole communicating with the lower sliding groove.

[0031] The locking device includes:

[0032] A locking part, which is connected to the lower tool holder and includes a locking hole;

[0033] The latch includes a sliding plate and a locking block. The sliding plate is slidably installed in the sliding groove, and the locking block is installed on the bottom surface of the sliding plate. In the open state or the closed state, the locking block is located in the locking hole and locks the upper tool handle and the lower tool handle.

[0034] A biasing component is connected to the slide plate and the upper tool holder, and can be operated to drive the latch into the lock hole;

[0035] A push button is installed in the upper slide groove, and a portion of its bottom passes through the through hole and connects to the slide plate. Attached Figure Description

[0036] Figure 1 This is a top view of the first upper plate, the blade, and the second lower plate of a cutting tool according to an embodiment of this utility model.

[0037] Figure 2 This is a top view of the first upper plate, locking part, hook, and first lower plate of the cutting tool according to an embodiment of the present invention.

[0038] Figure 3 yes Figure 2 A bottom view of the first lower plate of the cutting tool in the illustrated embodiment.

[0039] Figure 4 yes Figure 1 The top view of the first upper plate and blade in the open state in the embodiment shown.

[0040] Figure 5 yes Figure 1 The top view of the second lower plate in the embodiment shown, rotated 270°.

[0041] Figure 6 This is an assembly diagram of the first upper plate, locking part and hook in one embodiment of the present invention.

[0042] Figure 7 and Figure 8 This is a bottom view of the second lower plate and the latch in one embodiment of this utility model.

[0043] Figure 9 This is a top view of the second upper plate and the spring in one embodiment of this utility model.

[0044] Figure 10 This is an assembly diagram of the second upper plate and the push button in one embodiment of this utility model.

[0045] Reference numerals: 100, cutting tool; 11, first lower plate; 111, first part; 112, second part; 113, wrench part; 114, hexagonal hole; 115, wrench groove; 12, first upper plate; 13, lower shaft hole; 14, lower arc groove; 141, first front end; 142, first rear end; 15, first finger groove; 21, second upper plate; 211, first upper plate; 212, second upper plate; 213, mounting groove; 214, upper sliding groove; 22, second lower plate; 221, lower... 23. Slide groove; 24. Upper shaft hole; 25. Upper arc groove; 26. Second front end; 27. Second rear end; 28. Stop block; 29. ​​Second finger groove; 30. Locking part; 311. First guide surface; 312. Second guide surface; 33. Lock hole; 34. Locking buckle; 35. Slide plate; 36. Locking block; 47. Spring; 48. Push button; 49. Hook; 40. Opening; 41. Blade; 42. Upper limit block; 43. Lower limit block; 44. Bottle opener; 45. Friction part; 46. Hollowed-out area; Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0047] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0048] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of this utility model. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this utility model, but are merely illustrative of the essential spirit of the technical solution of this utility model.

[0049] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0050] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0051] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0052] This utility model relates to a cutting tool 100, such as Figure 1 As shown, the cutting tool 100 includes a lower tool holder, an upper tool holder, a cutting blade 4, a rotating column (not shown), and a locking device. Both the upper and lower tool holders are rotatably connected to the rotating column. The cutting blade 4 is located between the upper and lower tool holders and is also rotatably connected to the rotating column. The locking device is connected to the upper and lower tool holders to lock them in place. It should be understood that the top and bottom surfaces of the rotating column are secured with nuts, facilitating the disengagement of the upper and lower tool holders from the rotating column.

[0053] In a specific embodiment, such as Figure 2 As shown, the lower tool holder includes two layers, the lower layer is defined as the first lower layer plate 11, and the upper layer is defined as the first upper layer plate 12.

[0054] The first upper plate 12 and the first lower plate 11 extend along a first direction, with the first upper plate 12 stacked on top of the first lower plate 11 and fixedly connected to each other. The first lower plate 11 is located on the outer side, and the first upper plate 12 is made of a single piece of metal and is located in the inner layer. The first direction is... Figure 1 The left and right directions in the middle.

[0055] like Figure 2 and Figure 3As shown, the first lower plate 11 includes a first part 111, a second part 112 and a wrench part 113 that are assembled together. The first part 111 and the second part 112 are connected by screws. After the first part 111 and the second part 112 are connected, the bottom surface of the first part 111 is provided with a wrench groove 115 for installing the wrench part 113. The bottom wall of the wrench groove 115 is also provided with a hexagonal hole 114, which is aligned with the hexagonal hole 114 of the wrench part 113.

[0056] The first upper plate 12 is also provided with hexagonal holes 114. The hexagonal holes 114 of the first upper plate 12 and the hexagonal holes 114 of the first lower plate 11 are aligned vertically and fit together as a whole jaw.

[0057] It should be understood that in other embodiments, the lower tool holder may also be a single-layer plate.

[0058] exist Figure 2 In the embodiment shown, the upper and lower plates of the lower tool holder are respectively provided with lower shaft holes 13 aligned with each other at their left ends along the first direction, and the lower tool holder can be rotatably mounted on the rotating column through the lower shaft holes 13.

[0059] The left end of the first upper plate 12 is also provided with a lower arc groove 14 extending around the lower shaft hole 13. The lower arc groove 14 is an arc groove and is curved towards the left end. The central angle of the lower arc groove 14 is slightly greater than 180°.

[0060] The lower arc-shaped groove 14 has a first front end 141 and a first rear end 142 along the circumferential direction.

[0061] The upper tool holder is located above the lower tool holder. The upper tool holder also includes an upper plate and a lower plate. The upper plate of the upper tool holder is defined as the second upper plate 21, and the lower plate is defined as the second lower plate 22.

[0062] The second lower plate 22 and the second upper plate 21 both extend along the first direction. The second lower plate 22 is stacked on the bottom surface of the second upper plate 21 and is fixedly connected to the second upper plate 21 by screws. The second lower plate 22 is located on the inner side and is disposed opposite to the first upper plate 12.

[0063] The second lower plate 22 and the second upper plate 21 are respectively provided with upper shaft holes 23 at their left ends along the first direction; the upper shaft holes 23 of the second lower plate 22 and the second upper plate 21 are respectively rotatably sleeved on the outside of the rotating column.

[0064] The second lower plate 22 is also provided with an upper arc groove 24 surrounding the upper shaft hole 23. The upper arc groove 24 is also an arc groove, that is, the central angle of the upper arc groove 24 is also slightly greater than 180°, and the upper arc groove 24 is bent towards the right end.

[0065] The two ends of the upper arc-shaped groove 24 along the circumferential direction are the second front end 241 and the second rear end 242, respectively.

[0066] The blade 4 is located between the lower and upper shanks and is rotatably connected to the rotating column. The top surface of the blade 4 is provided with a lower limit block and the bottom surface is provided with an upper limit block 41. The lower limit block can be slidably installed in the lower arc groove 14 and the upper limit block 41 can be slidably installed in the upper arc groove 24.

[0067] The cutting tool 100 can be switched between an open state and a closed state. In the closed state, the cutting blade 4 is stacked between the lower tool holder and the upper tool holder, the lower limit block 42 is located at the first front end 141 of the lower arc groove 14, and the upper limit block 41 is located at the second front end 241 of the upper arc groove 24.

[0068] In the open state, such as Figure 4 As shown, the blade 4 rotates 180° around the rotating column, with its right end located outside the lower and upper tool holders. After rotating 360°, the upper tool holder is repositioned above the lower tool holder. The lower limit block 42 is located at the first rear end 142 of the lower arc-shaped groove 14, and the upper limit block 41 is located at the second rear end 242 of the upper arc-shaped groove.

[0069] In other words, when the tool 100 is in the closed state, the lower limit block 42 is located at the first front end 141 of the lower arc groove 14, and the upper limit block 41 is located at the second front end 241 of the upper arc groove. Since the upper arc groove 24 and the lower arc groove 14 are completely opposite in direction, neither the upper limit block 41 nor the lower limit block 42 of the blade 4 can rotate, and the blade 4 is fixed between the upper tool holder and the lower tool holder.

[0070] When it needs to be opened, such as Figure 4 As shown, after the lower tool holder rotates 180° together with the blade 4, the lower limit block rotates 180° within the lower arc-shaped groove 14, moving from the first front end 141 to the first rear end 142. The rotation of the blade 4 is restricted by the lower arc-shaped groove 14. Meanwhile, after the upper limit block 41 rotates 180° together with the blade 4 and the upper tool holder, because the blade 4 and the upper tool holder rotate together, the upper limit block 41 remains at the second front end 241 of the upper arc-shaped groove 24. At this time, the upper tool holder continues to rotate, as... Figure 5 As shown, the upper limit block 41 moves relative to the upper arc groove 24. When the upper tool holder rotates 360°, the upper tool holder returns to the starting position, and the upper limit block 41 moves to the second rear end 242 of the upper arc groove, and the blade 4 is fixed again.

[0071] The entire structure is very simple and easy to manufacture. The blade 4 is very stable in both open and closed states and will not be thrown out, making it safe and durable.

[0072] exist Figure 1-5In the embodiment shown, the upper arc groove 24 and the lower arc groove 14 have the same radius, the lower limit block and the upper limit block 41 are aligned in the vertical direction, and in the closed state or the open state, the first front end 141 and the second front end 241 are aligned in the vertical direction, and the first rear end 142 and the second rear end 242 are aligned in the vertical direction.

[0073] It should be understood that in other embodiments, the radii of the lower arc groove 14 and the upper arc groove may be different, and the lower limit block and the upper limit block 41 may not be aligned. However, when the tool 100 is opened or closed, the first front end 141 of the lower arc groove 14 and the second front end 241 of the upper arc groove need to be on the same radius of a rotating cylinder center, and the first rear end 142 of the lower arc groove 14 and the second rear end 242 of the upper arc groove need to be on the same radius of a rotating cylinder center, so that the two ends of the upper and lower arc grooves 14 can restrict the rotation of the blade 4.

[0074] Both the upper and lower tool holders are locked in the open or closed state by a locking device. Specifically, the locking device includes a locking part 31, a latch 32, a biasing member, and a push button 34.

[0075] Specifically, such as Figure 6 As shown, the locking part 31 is connected to the right end of the first upper plate 12 of the lower tool holder. The left end of the locking part 31 is provided with a first guide surface 311, a second guide surface 312 and a recessed locking hole 33. The first guide surface 311 extends from the front side of the locking part 31 to the locking hole 33. The first guide surface 311 can be an arc surface or an inclined surface that curves towards the left end. The front end of the first guide surface 311 is further to the right relative to the end near the locking hole 33. That is to say, the distance between the first guide surface 311 and the right end of the locking part 31 gradually increases from front to back.

[0076] The second guide surface 312 extends from the rear side of the locking part 31 to the lock hole 33. The second guide surface 312 may also be an arc surface or an inclined surface that curves towards the left end. The rear end of the second guide surface 312 is closer to the right side relative to the end near the lock hole 33. The distance between the second guide surface 312 and the right end of the locking part 31 gradually increases from back to front.

[0077] The keyhole 33 is located between the first guide surface 311 and the second guide surface 312, and is a recessed groove facing to the right.

[0078] The latch 32 includes a slide plate 321 and a locking block 322, and the slide plate 321 is slidably connected to the second lower plate 22. Specifically... Figure 7 and Figure 8 As shown, Figure 7 and Figure 8The following are bottom views of the second lower plate 22 of the upper tool holder. It can be seen that the second lower plate 22 is provided with a downward groove 221 extending in the first direction. The downward groove 221 can be a through groove that passes through the second lower plate 22.

[0079] The slide plate 321 is plate-shaped and located in the sliding groove 221, and the slide plate 321 can slide in the sliding groove 221.

[0080] The locking block 322 is a cylindrical structure and is connected to the bottom surface of the slide plate 321. The locking block 322 protrudes from the bottom surface of the slide plate 321 and is located at the right end of the slide plate 321.

[0081] like Figure 9 As shown, the top surface of the second upper plate 21 is provided with an upper sliding groove 214 with a groove, and the bottom wall of the upper sliding groove 214 is provided with a through hole communicating with the lower sliding groove 221.

[0082] Push button 34 is installed in the upper slide groove 214, and the top of push button 34 protrudes from the second upper plate 21 for easy pushing. The bottom surface of push button 34 is provided with a connector, which passes through the through hole of the upper slide groove 214 and connects to the slide plate 321. Pushing push button 34 can drive slide plate 321 to slide in a first direction.

[0083] The biasing component is a spring 33, one end of which is connected to the left end of the slide plate 321, and the other end is connected to the second upper plate 21 and the second lower plate 22.

[0084] When it is necessary to open the tool 100, push the push button 34 to the left, which will cause the locking block 322 to disengage from the lock hole 33. Then rotate the upper tool holder, and the locking block 322 will move out along the first guide surface 311.

[0085] After the upper tool holder rotates 360 degrees, the locking block 322 moves into the locking hole 33 along the second guide surface 312. During the process of moving into the locking hole 33, the locking block 322 drives the sliding plate 321 to compress the spring 33. After moving into the locking hole 33, the spring 33 applies a force to the locking block 322, which can prevent the locking block 322 from disengaging from the locking hole 33, thereby locking the upper tool holder and the lower tool holder.

[0086] When closing is required, push the push button 34 to the left to disengage the locking block 322 from the locking hole 33. Then, rotate the upper tool holder, and the locking block 322 moves out along the second guide surface 312. After the upper tool holder rotates 360 degrees, the blade 4 locks between the upper and lower tool holders, and the locking block 322 moves into the locking hole 33 along the first guide surface 311, locking the upper and lower tool holders.

[0087] Of course, the locking device can also be a structure with coil and magnet. In the power-off state, the upper and lower tool holders can be opened out of position, and in the power-on state, the upper and lower tool holders attract and lock together.

[0088] exist Figure 9 and Figure 10 In one embodiment, the second upper plate 21 includes a first upper plate 211 and a second upper plate 212 formed by splicing. The bottom surface of the first upper plate 211 is provided with a mounting groove 213, which is used to install the spring 33.

[0089] The second upper plate 212 and the first upper plate 211 are connected by screws. The second upper plate 212 is provided with the aforementioned upper sliding groove 214, which is used to install the push button 34.

[0090] The lower handle is also provided with a hook 35, which is integrally formed with the right end of the locking part 31. The right end of the locking part 31 is flush with the right end of the lower handle. The hook 35 is located outside the lower handle and has an opening 351 at its front end. The hook 35 allows the key to be easily hung on the knife 100.

[0091] The upper tool holder has a protruding locking block 322 on its right end. When the tool 100 is open or closed, the locking block 322 blocks the front opening 351 of the hook 35. Of course, in other embodiments, the hook 35 can also be provided on the upper tool holder, and the locking block 322 can be provided on the lower tool holder.

[0092] The front side of the lower handle is provided with a recessed first finger groove 15, and the front side of the upper handle is provided with a recessed second finger groove 26. When the knife 100 is in the open or closed state, the first finger groove 15 and the second finger groove 26 are aligned in the vertical direction for easy gripping.

[0093] The blade 4 also features a bottle opener 44 on its back for opening bottles. The blade 4 also has an uneven friction surface 45 for anti-slip purposes. The blade 4 further features multiple cutouts 46 for easy cutting of meat. The blade edge of the blade 4 also has a serrated shape. Of course, various functions can be configured as needed.

[0094] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0095] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0096] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A cutting tool, characterized in that, include: The lower tool holder has a lower shaft hole and a lower arc-shaped groove extending around the lower shaft hole, and the lower arc-shaped groove has a first front end and a first rear end in the circumferential direction; An upper tool holder is located above the lower tool holder and has an upper shaft hole and an upper arc-shaped groove extending around the upper shaft hole. The upper shaft hole and the lower shaft hole are coaxially arranged, and the upper arc-shaped groove has a second front end and a second rear end along the circumferential direction. A rotating column, which is installed in the upper shaft hole and the lower shaft hole; The blade is located between the lower shank and the upper shank and is rotatably connected to the rotating column. The top surface of the blade is provided with a lower limit block and the bottom surface is provided with an upper limit block. The lower limit block is slidably installed in the lower arc-shaped groove and the upper limit block is slidably installed in the upper arc-shaped groove. The cutting tool can be switched between an open state and a closed state; In the closed state, the blade is stacked between the lower shank and the upper shank, the lower limiting block is located at the first front end of the lower arc-shaped groove, and the upper limiting block is located at the second front end of the upper arc-shaped groove; In the open state, the blade rotates outside the lower and upper shanks, the lower limiting block is located at the first rear end of the lower arc-shaped groove, and the upper limiting block is located at the second rear end of the upper arc-shaped groove.

2. The cutting tool according to claim 1, characterized in that, The lower limit block is aligned with the upper limit block in the vertical direction; In the closed state or the open state, the first front end and the second front end are aligned vertically, and the first rear end and the second rear end are aligned vertically.

3. The cutting tool according to claim 1, characterized in that, The cutting tool also includes a locking device, which is connected to the upper tool holder or the lower tool holder; In the closed or open state, the locking device can operably lock the upper and lower tool holders.

4. The cutting tool according to claim 3, characterized in that, The locking device includes: A locking part, which is connected to one of the upper tool holder and the lower tool holder and includes a locking hole; A latch, which is movably connected to another of the upper and lower tool holders, wherein in the open or closed state, the latch is located in the lock hole and locks the upper and lower tool holders. A biasing element is connected to another part of the upper and lower tool holders and can be used to drive the latch into the lock hole.

5. The cutting tool according to claim 4, characterized in that, The locking part includes a first guide surface and a second guide surface, wherein the first guide surface extends from the front side of the locking part to the lock hole; The second guide surface extends from the rear side of the locking part to the lock hole.

6. The cutting tool according to claim 4, characterized in that, The locking device also includes a push button, which is connected to the latch.

7. The cutting tool according to claim 6, characterized in that, The biasing element is a spring, with one end connected to the push button and the other end connected to the other end of the upper and lower tool holders.

8. The cutting tool according to claim 4, characterized in that, One of the upper and lower tool holders is provided with a hook; The upper tool holder and the lower tool holder are each provided with a stop block; In the closed or open state, the stop block blocks the opening of the hook.

9. The cutting tool according to claim 8, characterized in that, The hook is connected to the locking part.

10. The cutting tool according to claim 4, characterized in that, The upper tool holder includes: The lower plate is provided with a downward groove; The upper plate is stacked and connected to the lower plate and is provided with a recessed upper sliding groove. The bottom wall of the upper sliding groove is provided with a through hole communicating with the lower sliding groove. The locking device includes: A locking part, which is connected to the lower tool holder and includes a locking hole; The latch includes a sliding plate and a locking block. The sliding plate is slidably installed in the sliding groove, and the locking block is installed on the bottom surface of the sliding plate. In the open state or the closed state, the locking block is located in the locking hole and locks the upper tool handle and the lower tool handle. A biasing component is connected to the slide plate and the upper tool holder, and can be operated to drive the latch into the lock hole; A push button is installed in the upper slide groove, and a portion of its bottom passes through the through hole and connects to the slide plate.

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