Multifunctional tool knife

Abstract

The utility model discloses a multifunctional tool knife which comprises a knife body, the knife head end of the knife body is provided with at least two knife outlet grooves, any two knife outlet grooves are internally provided with a blade clamping head and a glue pressing clamping head respectively, the blade clamping head and the glue pressing clamping head are in the same sliding and stretching direction, and the blade clamping head and the glue pressing clamping head are in the same sliding and stretching direction. A cleaning blade is detachably installed at the outer end of the blade chuck, a glue pressing plate is detachably installed at the outer end of the glue pressing chuck, a glue removing position is arranged at the knife handle end of the knife body, a glue removing knife is detachably installed at the glue removing position, and a blade bin is further arranged on the surface of one side of the knife body. The multifunctional tool knife has the cutting function of a traditional art knife, the shoveling and scraping function of a scraper knife, the function of removing glass cement and waterproof glue at corners of bathroom glass and the functions of seam beautifying, glue pressing and glue scraping, the mode of combining the multiple functions in the scheme is not only suitable for seam beautifying work of home decoration, but also suitable for seam beautifying work of bathroom decoration. And the scraper knife can also be suitable for various working conditions using the art knife scraper knife, and tools needing to be carried are reduced.

Description

Technical Field

[0001] The utility model relates to a tool knife, in particular to a multi-functional tool knife. Background Art

[0002] At present, the functions of tool knives are single. In actual use, workers need to equip multiple different tools at the same time. Especially when doing home decoration caulking, since there are many processes in home decoration caulking, there are about seven large and small tools corresponding to each process. The required tools are roughly caulking guns, brushes, caulking wax, caulking knives, cleaning cones, cleaning spatulas, and caulking tools. Each time, a large number of tools need to be carried, which is likely to cause omissions and delays in the construction period. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a multi-functional tool knife with reasonable design, convenient use and multiple functions.

[0004] To solve the above technical problem, the technical solution of the utility model is: a multi-functional tool knife, including a knife body. At least two knife slots are provided at the knife head end of the knife body. A slidable and retractable blade chuck and a caulking chuck are respectively arranged in any two of the knife slots. The sliding and retracting directions of the blade chuck and the caulking chuck are the same. A cleaning blade is detachably installed at the outer end of the blade chuck, and a caulking plate is detachably installed at the outer end of the caulking chuck. A glue removing position is provided at the handle end of the knife body, and a glue removing knife is detachably installed at the glue removing position. A blade bin is also provided on one side surface of the knife body.

[0005] As a preferred technical solution, a blade adjusting assembly is provided between the blade chuck and the corresponding knife slot. The blade chuck is fixed and moved in the knife slot by clamping or loosening through the blade adjusting assembly; a glue plate adjusting assembly is provided between the caulking chuck and the corresponding knife slot. The caulking chuck is fixed and moved in the knife slot by clamping or loosening through the glue plate adjusting assembly.

[0006] As a preferred technical solution, the blade bin is a groove structure recessed inward. The inner bottom surface of the groove structure is inclined, and a blade bin cover is buckled on the outer surface of the blade bin.

[0007] As a preferred technical solution, the caulking chuck includes a chuck body slidably arranged in the knife slot. Two caulking chuck arms arranged up and down are provided at the end of the chuck body. A caulking chuck groove for inserting the caulking plate is formed between the two caulking chuck arms. A caulking clamping block is arranged in the caulking chuck groove, and a caulking clamping groove corresponding to the caulking clamping block is provided at the end of the caulking plate.

[0008] As a preferred technical solution, the blade chuck includes a chuck body and a positioning member. The chuck body is installed in the blade outlet groove. The head of the chuck body is open and provided with a first clamping groove for vertically clamping the blade and a second clamping groove for horizontally clamping the blade. The overlapping part of the intersection of the first clamping groove and the second clamping groove; the positioning member includes a positioning lock block arranged in the chuck body. One end of the positioning lock block extends to the overlapping part between the first clamping groove and the second clamping groove to cooperate with the blade. The positioning lock block can reciprocate along the vertical direction of the first clamping groove and the second clamping groove to lock or unlock the blade.

[0009] As a preferred technical solution, the positioning member further includes an unlocking lever for driving the positioning lock block to move vertically. The positioning lock block is arranged at one end of the unlocking lever, and the other end of the unlocking lever extends out of the chuck body and is provided with a pressing end.

[0010] As a preferred technical solution, a lock rod groove for accommodating the unlocking lever is arranged in the chuck body. The lock rod groove is arranged parallel to the first clamping groove and the second clamping groove; when the pressing end of the unlocking lever is pressed, the other end of the unlocking lever drives the positioning lock block to move away from the first clamping groove and the second clamping groove.

[0011] As a preferred technical solution, an unlocking retreat inclined groove is arranged on the inner surface of the lock rod groove away from the positioning lock block. The unlocking retreat inclined groove gradually expands the space from the outside to the inside. An unlocking pressing inclined groove is arranged on the outer surface of the lock rod groove close to the positioning lock block. The unlocking pressing inclined groove gradually expands the space from the inside to the outside.

[0012] As a preferred technical solution, the chuck body includes a chuck seat plate, a chuck middle layer plate and a chuck cover plate that are correspondingly buckled. The first clamping groove and the second clamping groove are arranged between the chuck seat plate and the chuck middle layer plate. The positioning member is arranged between the chuck middle layer plate and the chuck cover plate. The positioning lock block is slidably arranged on the chuck middle layer plate, and one end passes through the chuck middle layer plate and extends to the overlapping part between the first clamping groove and the second clamping groove.

[0013] As a preferred technical solution, the first clamping groove is a trapezoidal groove adapted to the shape of one side tip of the blade, and the second clamping groove is a rectangular groove adapted to the rear end of the blade. The trapezoidal groove and the rectangular groove are arranged in an overlapping manner.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows: The present utility model provides a multi-functional utility knife, which has functions of cutting, shoveling and scraping, removing glass glue and waterproof glue at the corners of bathroom glass, and pressing and scraping for beautifying seams. The combination of multiple functions in this solution is not only applicable to the work of beautifying seams in home decoration, but also applicable to various working conditions where a utility knife or a spatula is used, reducing the tools that need to be carried. Description of the Drawings

[0015] The following drawings are only intended to illustrate and explain the present utility model and do not limit the scope of the present utility model.

[0016] Figure 1 It is a schematic structural view of the blade chuck in the extended state of the embodiment of the present utility model;

[0017] Figure 2 It is a schematic structural view of the caulking chuck in the extended state of the embodiment of the present utility model;

[0018] Figure 3 It is a schematic structural view of the tool body of the embodiment of the present utility model;

[0019] Figure 4 It is an installation schematic view of the caulking chuck and the caulking plate of the embodiment of the present utility model;

[0020] Figure 5 It is a cross-sectional view of the caulking chuck and the caulking plate of the embodiment of the present utility model;

[0021] Figure 6 It is an installation schematic view of the blade chuck and the cleaning blade of the embodiment of the present utility model;

[0022] Figure 7 It is an exploded view of the structure of the blade chuck of the embodiment of the present utility model;

[0023] Figure 8 It is a schematic view of the embodiment of the present utility model used as a cutting knife;

[0024] Figure 9 It is a schematic view of the embodiment of the present utility model used as a spatula;

[0025] Figure 10 It is a schematic view of the embodiment of the present utility model used as a horn knife;

[0026] Figure 11 It is a schematic view of the locked state of the cleaning blade of the embodiment of the present utility model;

[0027] Figure 12 It is a schematic view of the unlocked state of the cleaning blade of the embodiment of the present utility model;

[0028] In the figure: 100 - tool body; 101 - knife outlet groove; 102 - blade magazine; 200 - blade chuck; 210 - chuck body; 211 - first chuck groove; 212 - second chuck groove; 213 - lock block groove; 214 - chuck seat plate; 215 - middle chuck plate; 216 - chuck cover plate; 220 - positioning member; 221 - positioning lock block; 222 - unlocking lever; 223 - pressing end; 224 - lock rod groove; 225 - unlocking retreat inclined groove; 226 - unlocking pressing inclined groove; 300 - glue pressing chuck; 301 - chuck body; 302 - glue pressing chuck arm; 303 - glue pressing block; 400 - cleaning blade; 500 - glue pressing plate; 501 - glue pressing card slot; 600 - glue removing knife; 700 - blade magazine. Detailed implementation mode

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the drawings and the description are illustrative in nature and not used to limit the protection scope of the claims.

[0030] As Figures 1 to 4 shown, the multi-functional utility knife includes a tool body 100. Two knife outlet grooves 101 are provided at the knife head end of the tool body 100. A slidable and retractable blade chuck 200 is provided in one of the knife outlet grooves 101, and a slidable and retractable glue pressing chuck 300 is provided in the other knife outlet groove 101. The sliding and retracting directions of the blade chuck 200 and the glue pressing chuck 300 are the same. A cleaning blade 400 is detachably installed at the outer end of the blade chuck 200, and a glue pressing plate 500 is detachably installed at the outer end of the glue pressing chuck 300. A glue removing position is provided at the handle end of the tool body 100, and a glue removing knife 600 is detachably installed at the glue removing position. A blade magazine 700 is also provided on one side surface of the tool body 100. Of course, there can be three knife outlet grooves 101 in the knife outlet groove 101. A blade chuck 200 and a glue pressing chuck 300 are respectively provided in two of the knife outlet grooves 101, and the other knife outlet groove 101 can be a blade chuck 200 or a glue pressing chuck 300, or can be other types of knife heads.

[0031] The blade chuck 200 is used to install the cleaning blade 400, and the cleaning blade 400 can be a utility knife, a horn blade or other types of blades; when the blade chuck 200 installs a utility knife, there are two installation methods. When the utility knife is installed vertically, it is used as a cutting knife to meet the cutting function. When the utility knife is installed horizontally, it is used as a spatula to meet the scraping function; when the blade chuck 200 installs a horn blade, it meets the function of cleaning gaps and caulking; the glue pressing chuck 300 installs the glue pressing plate 500 to meet the function of beautifying joint glue pressing; the glue removing position installs the glue removing knife 600, and the glue removing knife 600 can be a triangular glue removing knife 600, also called a seam cleaning spatula, to meet the work of removing glue at 90° corners; various replacement blades and the glue pressing plate 500 can be stored in the blade magazine 700. The multi-functional utility knife of this solution proposes a multi-functional tool solution of "one is all" through a combination of multiple functions, aiming to enable workers to carry one less tool and use one tool for most working conditions.

[0032] Since the blade chuck 200 and the glue pressing chuck 300 are respectively located in two blade slots 101, and their structures do not interfere with each other. When the cleaning blade 400 needs to be used, the blade chuck 200 is pushed out to drive the cleaning blade 400 to extend out of the tool body 100, and the glue pressing chuck 300 retracts to drive the glue pressing plate 500 to hide inside the tool body 100, without affecting the use of the cleaning blade 400; when the glue pressing plate 500 needs to be used, the glue pressing chuck 300 is pushed out to drive the glue pressing plate 500 to extend out of the tool body 100, and the blade chuck 200 retracts to drive the cleaning blade 400 to hide outside the tool body 100, without affecting the use of the glue pressing plate 500.

[0033] A blade adjusting component is provided between the blade chuck 200 and the corresponding blade slot 101. The blade chuck 200 is fixed and moved in the blade slot 101 by clamping or loosening through the blade adjusting component; the blade adjusting component can adopt the tooth rail and slider structures commonly used in ordinary retractable utility knives in the prior art, which belong to the prior art and will not be elaborated here.

[0034] See Figure 3 , the blade magazine 700 is a groove structure 102 that is recessed inward. The inner bottom surface of the groove structure 102 is inclined, which is conducive to the placement and removal of the blades. A blade magazine cover is buckled on the outer surface of the blade magazine 700, and the blade magazine cover can be buckled by a snap-fastening method.

[0035] See Figure 4 and Figure 5, the rubber pressing chuck 300 includes a chuck body 301 slidably disposed in the knife - out groove 101. At the end of the chuck body 301, there are two rubber pressing arms 302 arranged vertically. A rubber pressing chuck groove for inserting the rubber pressing plate is formed between the two rubber pressing arms 302. A rubber pressing chuck block 303 is arranged in the rubber pressing chuck groove. At the end of the rubber pressing plate 500, there is a rubber pressing chuck groove 501 corresponding to and clamped with the rubber pressing chuck block 303. The rubber pressing chuck block 303 includes a connecting block and a trapezoidal chuck head arranged at the outer end of the connecting block. The structure of the rubber pressing chuck block 303 is basically the same as that of the rubber pressing chuck groove 501, and they cooperate with each other to achieve clamping. The rubber pressing plate 500 and the rubber pressing chuck 300 are cooperatively matched by means of clamping and connection, and different models can be detachably replaced. In this embodiment, the rubber pressing chuck can adopt a metal structure to improve rigidity, and the rubber pressing plate adopts a rubber material with a certain flexibility to meet the rubber pressing function.

[0036] A rubber plate adjusting component is arranged between the rubber pressing chuck 300 and the corresponding knife - out groove 101. The rubber pressing chuck 300 is fixed and moved in the knife - out groove 101 by clamping or loosening through the rubber plate adjusting component. The rubber plate adjusting component can adopt the same structure as the blade adjusting component, and can adopt the tooth - rail and slider structure commonly used in ordinary retractable utility knives in the prior art, which belongs to the prior art and will not be elaborated here.

[0037] See Figure 6 and Figure 7 , the blade chuck 200 has a horizontal installation position and a vertical installation position with different installation methods. The cleaning blade 400 is vertically installed in the vertical installation position and used as a cutting knife. The blade is horizontally installed in the horizontal installation position and used as a plane scraper. In this embodiment, the cleaning blade 400 is a commonly used trapezoidal utility knife in the prior art. The two side tips of the trapezoidal utility knife are trapezoidal. When vertically installed, the cleaning blade 400 exposed outside the blade chuck 200 has the same shape as a cutting knife and can achieve the cutting function. When horizontally installed, the cleaning blade 400 exposed outside the blade chuck 200 has the same shape as a scraper and can achieve the scraping function; when the cleaning blade 400 is a trapezoidal ox - horn knife, one end of the trapezoidal ox - horn knife has the same structure as one end of the trapezoidal utility knife and can be vertically installed on the blade chuck 200, and the other end is an ox - horn knife exposed outside the blade chuck 200, which can achieve the function of cleaning gaps and caulking.

[0038] Such as Figure 6 and Figure 7As shown, the blade chuck 200 includes a chuck body 210 and a positioning member 220. The chuck body 210 is slidably installed in the blade slot 101. The chuck body 210 is used to clamp a trapezoidal utility knife and a trapezoidal horn knife, realizing the vertical installation and horizontal installation of the trapezoidal utility knife, and realizing the vertical installation of the trapezoidal horn knife. The positioning member 220 is used to limit the position of the installed blade to ensure the stable installation of the blade.

[0039] See Figures 7 to 10 , the head of the chuck body 210 is open and provided with a first clamping groove 211 for vertically clamping the blade and a second clamping groove 212 for horizontally clamping the blade. The first clamping groove 211 and the second clamping groove 212 overlap at a 90° intersection. The first clamping groove 211 is a trapezoidal groove adapted to the shape of one side tip of the blade. The depth of the trapezoidal groove is relatively deep. One side tip of the blade is completely stuck in the trapezoidal groove. The trapezoidal shape of the trapezoidal groove completely surrounds and limits one side tip of the blade. For the installation effect diagram, see Figure 8 and Figure 10 , the second clamping groove 212 is a rectangular groove adapted to the rear end of the blade. The rectangular groove is relatively shallow in depth and penetrates at the front end. The rear end (the end opposite to the blade edge end) of the blade is stuck in the rectangular groove, and both side tips extend out of the rectangular groove. The rectangular groove limits the rear end face of the blade. For the installation effect diagram, see Figure 9 , the trapezoidal groove and the rectangular groove are arranged in an overlapping manner at a 90° intersection.

[0040] See Figure 11 and Figure 12, the positioning member 220 is installed on the chuck body 210 and includes a positioning lock block 221 and an unlocking lever 222. The positioning lock block 221 is disposed inside the chuck body 210 as a mechanical structure for locking or unlocking the blade. One end of the positioning lock block 221 extends to the overlapping portion between the first clamping groove 211 and the second clamping groove 212 to cooperate with the blade. The positioning lock block 221 can reciprocate in the vertical direction of the first clamping groove 211 and the second clamping groove 212 to lock or unlock the blade. The unlocking lever 222 serves as a control structure for driving the vertical movement of the positioning lock block 221. The positioning lock block 221 is disposed at one end of the unlocking lever 222. The other end of the unlocking lever 222 extends out of the chuck body 210 and is provided with a pressing end 223. The pressing end 223 is located on one side of the tool body 100, facilitating hand operation. When the pressing end 223 is pressed, the unlocking lever 222 tilts, and the other end is lifted in a lever manner, thereby driving the positioning lock block 221 to move away from the first clamping groove 211 and the second clamping groove 212, unlocking the blade. At this time, the blade can be taken out by hand; when the pressing end 223 is reset in the reverse direction, the unlocking lever 222 tilts in the reverse direction, driving the positioning lock block 221 to approach the first clamping groove 211 and the second clamping groove 212, locking the blade. At this time, the blade is stably fixed. In this embodiment, the unlocking lever 222 is made of a plastic part with a certain plastic deformation. The positioning lock block 221 can be made of a plastic part integrally formed with the unlocking lever 222. When the pressing end 223 is pressed forcefully, the unlocking lever 222 is deformed as a whole to achieve unlocking. When the pressing is no longer applied, the unlocking lever 222 resumes deformation and maintains the locked state.

[0041] A lock block groove 213 is provided in the chuck body 210. The positioning lock block 221 is slidably installed in the lock block groove 213. One end of the positioning lock block 221 passes through the lock block groove 213 and cooperates with the blade. The blade includes a blade body in a trapezoidal shape. A positioning card slot or a positioning card hole for cooperating with the positioning lock block 221 is provided in the middle of the blade body. When the positioning lock block 221 slides and inserts into the positioning card slot or the positioning card hole, the blade is locked. Cooperating with the first clamping groove 211 and the second clamping groove 212, the blade can be stably fixed. When the positioning lock block 221 withdraws from the positioning card slot or the positioning card hole, the blade can be unlocked, and at this time, the blade can be removed. In this embodiment, both the positioning lock block 221 and the lock block groove 213 are cylindrical. The diameter of the lock block groove 213 is larger than the diameter of the positioning lock block 221. When the positioning lock block 221 is driven by the unlocking lever 222 to tilt outwards, the positioning lock block 221 can have a small amount of lateral movement, which is beneficial to the smooth movement of the positioning lock block 221 in the vertical direction. The sizes of the positioning card slot and the positioning card hole basically correspond to the size of the positioning lock block 221, which is used to ensure the stable position of the locked blade. When the end of the blade abuts against the positions of the first clamping groove 211 and the second clamping groove 212, the positions of the positioning card slot, the positioning card hole and the positioning lock block 221 are basically the same, and the locking can be successfully completed.

[0042] The collet body 210 is provided with a lock rod groove 224 for accommodating the unlocking lever 222. The lock rod groove 224 is arranged in parallel with the first clamping groove 211 and the second clamping groove 212. The width of the lock rod groove 224 basically corresponds to the width of the unlocking lever 222. When the unlocking lever 222 is not forced to deform, the lock rod groove 224 can limit the unlocking lever 222 to a horizontal state. When the pressing end 223 of the unlocking lever 222 is pressed, the other end of the unlocking lever 222 drives the positioning lock block 221 to move away from the first clamping groove 211 and the second clamping groove 212. On the side surface of the inner part of the lock rod groove 224 away from the positioning lock block 221, there is an unlocking retreat inclined groove 225, and the unlocking retreat inclined groove 225 gradually expands the space from the outside to the inside. On the side surface of the outer part of the lock rod groove 224 close to the positioning lock block 221, there is an unlocking pressing inclined groove 226, and the unlocking pressing inclined groove 226 gradually expands the space from the inside to the outside. The unlocking retreat inclined groove 225 and the unlocking pressing inclined groove 226 are located on both sides and at both ends of the unlocking lever 222, so that the unlocking lever 222 can form a lever-type installation method. When the pressing end 223 of the unlocking lever 222 is pressed towards the direction of the unlocking pressing inclined groove 226, the unlocking lever 222 is forced to deform, so that the other end of the unlocking lever 222 moves towards the unlocking retreat inclined groove 225, thereby driving the positioning lock block 221 to unlock the blade. For the unlocked state, see Figure 12 ; when the unlocking lever 222 is no longer pressed, the unlocking lever 222 resumes deformation and remains basically parallel in the lock rod groove 224, so that the positioning lock block 221 locks the blade. For the locked state, see Figure 11 .

[0043] The collet body 210 includes a collet seat plate 214, a collet middle plate 215 and a collet cover plate 216 that are correspondingly fastened. The first clamping groove 211 and the second clamping groove 212 are arranged between the collet seat plate 214 and the collet middle plate 215. The positioning member 220 is arranged between the collet middle plate 215 and the collet cover plate 216. The positioning lock block 221 is slidably arranged on the collet middle plate 215, and one end thereof extends through the collet middle plate 215 to the overlapping part between the first clamping groove 211 and the second clamping groove 212. The collet body 210 is composed of the collet seat plate 214, the collet middle plate 215 and the collet cover plate 216, and the three can be fixed by screws. The structure is divided into three parts. The tool bit is clamped between the collet seat plate 214 and the collet middle plate 215. The positioning lock block 221 and the unlocking lever 222 are arranged between the collet middle plate 215 and the collet cover plate 216. This design method has the advantages of simple structure and reasonable layout.

[0044] The blade chuck 200 has a two-way blade clamping groove, which can meet the vertical and horizontal installation of the blade. When installed vertically, it can be used as a cutter to achieve the cutting function. When installed horizontally, it can be used as a scraper to achieve the scraping function. Through different installation forms, the traditional utility knife has the function of a scraper and can be applied to a variety of working conditions. At the same time, the locking and unlocking of the blade can be achieved by moving the positioning lock block 221, which has the advantages of few parts, simplified structure, convenient operation, low failure rate, and low cost.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional tool knife, comprising a knife body, characterized in that: The blade head end of the blade body is provided with at least two blade outlet grooves, wherein any two of the blade outlet grooves are respectively provided with a slidable and retractable blade chuck and a glue pressing chuck, the blade chuck and the glue pressing chuck have the same sliding and retracting direction, a cleaning blade is detachably mounted on the outer end of the blade chuck, a glue pressing plate is detachably mounted on the outer end of the glue pressing chuck, a glue removal position is provided at the handle end of the blade body, a glue removal knife is detachably mounted at the glue removal position, and a blade magazine is also provided on one side surface of the blade body.

2. The multifunctional tool knife according to claim 1, characterized in that: A blade adjustment component is provided between the blade chuck and the corresponding knife outlet groove, and the blade chuck is fixed and moved in the knife outlet groove by clamping or loosening the blade adjustment component; a rubber plate adjustment component is provided between the glue pressing chuck and the corresponding knife outlet groove, and the glue pressing chuck is fixed and moved in the knife outlet groove by clamping or loosening the rubber plate adjustment component.

3. The multifunctional tool knife according to claim 1, characterized in that: The blade bin is an inwardly concave groove structure, the inner bottom surface of the groove structure is inclined, and a blade bin cover is buckled on the outer surface of the blade bin.

4. The multifunctional tool knife according to claim 1, characterized in that: The glue pressing chuck includes a chuck body slidably arranged in the knife outlet groove, and the end of the chuck body is provided with two glue pressing clamp arms arranged up and down, and a glue pressing clamp groove for inserting the glue pressing plate is formed between the two glue pressing clamp arms, and a glue pressing card block is provided in the glue pressing clamp groove, and the end of the glue pressing plate is provided with a glue pressing card groove corresponding to the glue pressing card block.

5. The multifunctional tool knife according to claim 1, characterized in that: The blade chuck includes a chuck body and a positioning member, the chuck body is installed in the blade outlet groove, the head opening of the chuck body is provided with a first clamping groove for vertically clamping the blade and a second clamping groove for horizontally clamping the blade, and the intersection part of the first clamping groove and the second clamping groove overlaps; the positioning member includes a positioning locking block provided in the chuck body, one end of the positioning locking block extends to the overlapping part between the first clamping groove and the second clamping groove to cooperate with the blade, and the positioning locking block can reciprocate along the vertical direction of the first clamping groove and the second clamping groove to lock or unlock the blade.

6. The multifunctional tool knife according to claim 5, characterized in that: The positioning member also includes an unlocking lever for driving the positioning locking block to move vertically. The positioning locking block is arranged at one end of the unlocking lever, and the other end of the unlocking lever extends out of the chuck body and is provided with a pressing end.

7. The multifunctional tool knife according to claim 6, characterized in that: A locking rod groove for accommodating the unlocking lever is provided in the chuck body, and the locking rod groove is arranged parallel to the first clamping groove and the second clamping groove; when the pressing end of the unlocking lever is pressed, the other end of the unlocking lever drives the positioning locking block to move in a direction away from the first clamping groove and the second clamping groove.

8. The multifunctional tool knife according to claim 7, characterized in that: An unlocking retreat bevel groove is provided on the inner surface of the locking rod groove away from the positioning locking block, and the unlocking retreat bevel groove is inclined from the outside to the inside to gradually expand the space. An unlocking pressing bevel groove is provided on the outer surface of the locking rod groove close to the positioning locking block, and the unlocking pressing bevel groove is inclined from the inside to the outside to gradually expand the space.

9. The multifunctional tool knife according to claim 5, characterized in that: The chuck body includes a chuck base plate, a chuck middle plate and a chuck cover plate that are correspondingly buckled, the first chuck groove and the second chuck groove are arranged between the chuck base plate and the chuck middle plate, the positioning piece is arranged between the chuck middle plate and the chuck cover plate, the positioning lock block is slidably arranged on the chuck middle plate, and one end passes through the chuck middle plate and extends to the overlapping part between the first chuck groove and the second chuck groove.

10. The multifunctional tool knife according to claim 5, characterized in that: The first clamping groove is a trapezoidal groove adapted to the shape of the tip of one side of the blade, and the second clamping groove is a rectangular groove adapted to the rear end of the blade. The trapezoidal groove and the rectangular groove are arranged to cross and overlap.

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