Art knife

Abstract

The utility model provides an art knife, which relates to the technical field of cutting tools, and comprises a knife handle, a knife handle and a knife cover, the blade is slidably connected with the cutter handle, and the rear end of the blade is connected with a gear meshed with the tooth row; the positioning assembly comprises a rotating plate, an extending seat, an outer positioning plate and an inner positioning plate, the rotating plate is perpendicular to the blade, one end of the rotating plate is rotatably connected with the bottom of the cutter handle, the extending seat is slidably arranged on the rotating plate in a sleeving mode, the outer positioning plate is connected with the extending seat and is parallel to the blade, and the inner positioning plate is connected with the outer positioning plate through a first elastic piece. The art knife has the advantages that the positioning assembly is arranged at the bottom of the knife handle and clamps the frame of the drawing board through the outer positioning plate and the inner positioning plate, when the knife point of the blade slides on paper on the drawing board for cutting, the outer positioning plate and the inner positioning plate move along the two sides of the frame respectively, and deviation of the art knife during cutting of the blade is prevented; and the cutting operation can be performed by one hand, so that force application and operation are facilitated when the art knife is used.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a utility knife. Background Art

[0002] A utility knife, also commonly known as a carving knife or wallpaper knife, is typically used only at the tip. Cutting, carving, and marking are its primary functions. However, the blade is very brittle and should not be extended too far during use. A utility knife is used for arts and crafts, primarily for cutting soft materials. It typically consists of a handle and a pull-out blade. A few have metal handles, and the blade often has a beveled edge, allowing it to be broken along the score line of the blade, creating a new edge for easier use. Utility knives come in a variety of sizes.

[0003] The utility knife disclosed in the Chinese utility model patent application publication number CN211030087U has another knife cover for protecting the blade, although one knife cover can be lost during use; and the first knife cover can be inserted into the placement slot and is not easy to lose. However, the existing device cannot allow the user to use the utility knife in different postures, which is inconvenient to exert force and operate. The blade is unstable, which may cause injury to the user, reducing the use effect. It is inconvenient to operate with one hand, which may damage the paper cutting. The flexibility is not high, there are safety hazards, and the work efficiency is low. It is impossible to prevent the broken blade from flying around, which may cause injury to the user. Therefore, we propose a new device to solve the above problems. Utility Model Content

[0004] In view of this, in order to solve the problem that the user cannot use the utility knife in different postures and is inconvenient to exert force and operate, an embodiment of the present utility knife is provided.

[0005] An embodiment of the present utility model provides a utility knife, comprising:

[0006] a shank having a tooth row provided therein;

[0007] a blade, which is slidably connected to the handle, and a rear end of the blade is connected to a gear, and the gear is meshed with the gear row;

[0008] And a positioning assembly, which includes a rotating plate, an extension seat, an outer positioning plate and an inner positioning plate. The rotating plate is perpendicular to the blade and one end is rotatably connected to the bottom of the handle. The extension seat is slidably mounted on the rotating plate. The outer positioning plate is connected to the extension seat and is parallel to the blade. The inner positioning plate and the outer positioning plate are connected by a first elastic member.

[0009] Furthermore, it also includes a support assembly, which includes a fixed seat, a fixed plate and a spring seat. The fixed seat is parallel to the blade, the upper end of the fixed seat is connected to the bottom of the knife handle, the fixed plate can be slidably inserted into the fixed seat, and the side surface of the fixed seat is provided with a plurality of positioning holes arranged at intervals along the vertical direction. The spring seat is fixed to the upper end of the fixed plate, and the lower end of the fixed plate is provided with a roller. The spring seat is provided with a positioning column connected by a second elastic member, and the positioning column is inserted into one of the positioning holes.

[0010] Furthermore, a spring hole is provided on one side of the spring seat, the second elastic member is fixed in the spring hole, the rear end of the positioning column is inserted into the spring hole and connected to the second elastic member, and the front end of the positioning column extends out of the spring hole and is inserted into the positioning hole.

[0011] Furthermore, the number of the support components is set to two, one support component is fixed to the rear end of the knife handle, and the other support component is fixed to the front part of the knife handle.

[0012] Furthermore, it also includes a collection component, which includes a collection box, a collection plate and a baffle. The front side of the collection box is open, the collection plate is detachably connected to the front side of the collection box, the front side of the collection box is detachably connected to the rear end of the knife handle, the upper surface of the collection box is provided with a through slide groove, the bottom of the baffle is provided with a slider, and the slider is arranged in the slide groove and can slide back and forth.

[0013] Furthermore, the two ends of the front side of the collection box are connected to the rear end of the knife handle through a plurality of pins, a limiting rod is provided at the bottom of the front side of the collection box, and the collection plate is arranged between each of the pins and the limiting rod.

[0014] Furthermore, an adjustment hole is provided on the surface of the extension seat, and a locking bolt is provided in the adjustment hole. The locking bolt passes through the adjustment hole and is fastened to the rotating plate.

[0015] Furthermore, the adjustment hole is a vertically arranged oblong hole, and a length mark is provided on one side of the adjustment hole.

[0016] Furthermore, the rear portion of the knife handle is provided with a groove and the front portion is provided with a guide plate, the tooth row is installed on one side of the groove, the gear is arranged in the groove, the upper end of the gear is provided with a protruding seat, the upper end of the protruding seat is provided with a push button, a guide groove is provided in the guide plate, the blade can be slidably arranged in the guide groove, and the rear end of the blade is provided with a mounting hole, and the mounting hole is sleeved on the protruding seat.

[0017] Furthermore, a support seat is provided at the upper front end of the knife handle, and a hand-holding groove is provided at the lower rear end of the knife handle.

[0018] The beneficial effects brought about by the technical solution provided by the embodiment of the utility model are:

[0019] 1. The utility knife of the present invention is provided with a positioning assembly at the bottom of the handle. The positioning assembly clamps the frame of the drawing board through an outer positioning plate and an inner positioning plate. When the tip of the blade slides on the paper on the drawing board to cut, the outer positioning plate and the inner positioning plate respectively move along the two sides of the frame to prevent the utility knife from deviating when the blade is cutting. The cutting operation can be performed with one hand, which is convenient for exerting force and operating the utility knife.

[0020] 2. The utility knife of the present invention is provided with a support assembly at the bottom of the handle. When the blade is cutting, the roller of the support assembly rolls on the paper to press the paper tightly to prevent the paper from moving, thereby ensuring the accuracy of the paper cutting position; and the position of the roller can be adjusted by adjusting the position of the fixed plate, thereby adjusting the inclination angle of the blade when cutting the paper, which makes it more convenient for the user to exert force and more comfortable to use.

[0021] 3. The utility knife of the present invention is provided with a collection assembly at the rear of the handle. When it is necessary to break off a section of the blade with a blunt tip, the baffle is pushed to expose the slide groove on the upper surface of the collection box, and the tip of the blade is inserted into the slide groove. The blunt section of the blade can be easily broken off, and the broken section of the blade falls directly into the collection box. The baffle prevents the broken blade from flying around, thereby reducing the risk of injury to the user when breaking the blade. The blades can be collected when it is inconvenient to throw away the blunt blades, without affecting the use of the utility knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a utility knife of the utility model;

[0023] Figure 2 It is an exploded view of a utility knife of the utility model;

[0024] Figure 3 is a schematic diagram of the tool holder, positioning assembly and collection assembly;

[0025] Figure 4 It is an exploded view of the positioning component;

[0026] Figure 5 is a schematic diagram of the collection component;

[0027] Figure 6 This is a schematic diagram of the drawing board.

[0028] Figure: 1, handle; 101, support base; 102, grip slot; 103, tooth row; 104, gear; 105, protruding base; 106, push button; 107, guide plate; 108, guide slot; 2, blade; 201, mounting hole; 3, positioning assembly; 301, rotating plate; 302, extension base; 303, outer positioning plate; 304, inner positioning plate; 305, first elastic member; 306, shaft base; 307 , rotating shaft; 308, adjusting hole; 309, length mark; 310, locking bolt; 4, supporting assembly; 401, fixing seat; 402, fixing plate; 403, spring seat; 404, roller; 405, positioning hole; 406, positioning column; 5, collecting assembly; 501, collecting box; 502, collecting plate; 503, baffle; 504, pin shaft; 505, limiting rod; 506, slide groove; 207, slider. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will further describe the embodiments of the present invention with reference to the accompanying drawings. The following describes a preferred embodiment of the present invention among multiple possible embodiments, which is intended to provide a basic understanding of the present invention, but is not intended to identify the key or decisive elements of the present invention or to limit the scope of protection to be provided.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual scale.

[0033] It should be noted that, unless otherwise specified or limited, the terms "mounted" and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0034] Please refer to Figure 1 and2 An embodiment of the present utility model provides a utility knife, comprising a handle 1, a blade 2 and a positioning assembly 3.

[0035] A tooth row 103 is provided inside the handle 1 , and the tooth row 103 is arranged along the front-to-back direction.

[0036] The blade 2 is slidably connected to the handle 1, and the rear end of the blade 2 is connected to a gear 104, which is engaged with the tooth row 103. By pushing the gear 104 to move along the tooth row 103, the blade 2 can be driven to move in the front-rear direction.

[0037] Specifically, the handle 1 is provided with a groove at the rear and a guide plate 107 at the front. The groove is a rectangular slot extending in the front-to-back direction, extending through the handle 1 at both ends. The toothed rack 103 is fixedly mounted on one side of the groove. The gear 104 is vertically disposed within the groove, with one side meshing with the toothed rack 103. A protruding seat 105 is provided at the upper end of the gear 104, rotatably connected to the gear 104. A push button 106 is provided at the upper end of the protruding seat 105. A guide slot 108 is provided within the guide plate 107, into which the blade 2 is slidably mounted. A mounting hole 201 is provided at the rear end of the blade 2, which is sleeved onto the protruding seat 105. Pushing the push button 106 causes the gear 104 to roll along the rack, thereby moving the blade 2 in the front-to-back direction, extending out of or retracting into the guide slot 108.

[0038] like Figure 3 and 4 As shown, the positioning assembly 3 is arranged on the lower side of the front part of the knife handle 1, and the positioning assembly 3 includes a rotating plate 301, an extension seat 302, an outer positioning plate 303 and an inner positioning plate 304. The rotating plate 301 is perpendicular to the blade 2 and one end is rotatably connected to the bottom of the knife handle 1. The extension seat 302 is slidably mounted on the rotating plate 301. The outer positioning plate 303 is connected to the extension seat 302 and is parallel to the blade 2. The inner positioning plate 304 is connected to the outer positioning plate 303 by a first elastic member 305.

[0039] Specifically, a shaft seat 306 is provided on the lower side of the front portion of the knife handle 1, and the upper end of the rotating plate 301 is rotatably connected to the shaft seat 306 via a rotating shaft 307. The rotating plate 301 is approximately a rectangular plate, and the extension seat 302 is provided with a through-groove extending vertically therethrough. The through-groove of the extension seat 302 is sleeved on the rotating plate 301, allowing the extension seat 302 to slide along the rotating plate 301. The outer positioning plate 303 is an L-shaped plate, one side of the outer positioning plate 303 is fixedly connected to the extension seat 302, and the inner positioning plate 304 is connected to the other side of the outer positioning plate 303 via the first elastic member 305. The first elastic member 305 can be a spring, which is vertically arranged between the outer positioning plate 303 and the inner positioning plate 304.

[0040] In some embodiments, the extension seat 302 is provided with an adjustment hole 308, which is provided with a locking bolt 310. The locking bolt 310 passes through the adjustment hole 308 and is securely connected to the rotating plate 301. After the extension seat 302 slides along the rotating plate 301 to a desired position, the locking bolt 310 secures the extension seat 302 to the rotating plate 301. Furthermore, the adjustment hole 308 can be a vertically arranged oblong hole, with a length mark 309 provided on one side of the adjustment hole 308 to accurately determine the position of the extension seat 302.

[0041] In some other embodiments, a utility knife of the present invention also includes a support assembly 4, which includes a fixed seat 401, a fixed plate 402 and a spring seat 403. The fixed seat 401 is parallel to the blade 2, and the upper end of the fixed seat 401 is connected to the bottom of the handle 1. The fixed plate 402 can be slidably inserted into the fixed seat 401. The side of the fixed seat 401 is provided with a plurality of positioning holes 405 spaced along the vertical direction. The spring seat 403 is fixed to the upper end of the fixed plate 402, and the lower end of the fixed plate 402 is provided with a roller 404. The spring seat 403 is provided with a positioning column 406 connected by a second elastic member, and the positioning column 406 is inserted into one of the positioning holes 405.

[0042] A spring hole is provided on one side of the spring seat 403, and the second elastic member is fixed in the spring hole. The rear end of the positioning post 406 is inserted into the spring hole and connected to the second elastic member, and the front end of the positioning post 406 extends out of the spring hole and is inserted into one of the positioning holes 405. By pressing the positioning post 406, the fixing plate 402 can be pushed and pulled to move within the fixing seat 401, so that the positioning post 406 enters and exits one of the positioning holes 405, thereby adjusting the fixing plate 402 to the desired position, thereby adjusting the roller 404 to the desired position.

[0043] It should be noted that the number of the support components 4 can be set to one or two. When the number of the support components 4 is set to one, the support component 4 is set at the front of the handle 1. When the blade 2 cuts the paper, the user holds the handle 1 to tilt the blade 2, and the roller 404 of the support component 4 is supported on the paper and can roll on the paper. When the number of the support components 4 is set to two, one support component 4 is fixed to the rear end of the handle 1 and the other support component 4 is fixed to the front of the handle 1. When the blade 2 cuts the paper, the handle 1 tilts, and by adjusting the positions of the fixing plates 402 of the two support components 4, the lengths of the two support components 4 are made different, so that the rollers 404 of the two support components 4 are supported on the paper at the same time and can roll on the paper.

[0044] like Figure 5 As shown, in some other embodiments, a utility knife of the present invention further includes a collection assembly 5, comprising a collection box 501, a collection plate 502, and a baffle 503. The front side of the collection box 501 is open, and the collection plate 502 is detachably connected to the front side of the collection box 501. The front side of the collection box 501 is detachably connected to the rear end of the handle 1. Here, the collection box 501 is approximately hollow and semi-cylindrical. The two ends of the front side of the collection box 501 are connected to the rear end of the handle 1 via multiple pins 504. The bottom of the front side of the collection box 501 is provided with a limit rod 505, and the collection plate 502 is disposed between each of the pins 504 and the limit rod 505. The limit rod 505 is rotatably disposed on the front side of the collection box 501. A limit plate is provided on the limit rod 505. Rotation of the limit rod 505 drives the limit plate to rotate, causing the limit plate to block or release the collection plate 502.

[0045] The upper surface of the collection box 501 is provided with a running chute 506, which is arranged in a front-to-back direction. A slider 207 is provided at the bottom of the baffle 503. The slider 207 is disposed within the chute 506 and can slide back and forth. The chute 506 and the slider 207 are shaped to match each other. In this embodiment, the chute 506 and the slider 207 are both T-shaped, and the slider 207 is embedded in the chute 506 and can slide. By pushing the baffle 503 backward to allow the chute 506 to leak out, the tip of the blade 2 can be inserted into the chute 506, and the blunted section of the blade 2 can be easily broken off. The broken section of the blade 2 then falls directly into the collection box 501 through the chute 506. After collecting the broken blades 2 in the collection box 501 multiple times, the collection box 501 can be removed from the handle to pour out the blades 2 inside the collection box 501.

[0046] In addition, in some other embodiments, the upper front portion of the knife handle 1 is provided with a support base 101, and the lower rear portion of the knife handle 1 is provided with a gripping slot 102. When cutting paper, the user holds the knife handle 1 in the gripping slot 102 and places the thumb on the support base 101 to operate the knife. This reduces the inconvenience of exerting force and operating the knife in this position. Thus, the gripping slot 102 and the support base 101 of the knife handle 1 make exerting force more convenient and the user's posture more comfortable.

[0047] The utility model is a utility knife which can be used for Figure 6 The paper cutting process on the artboard shown is as follows:

[0048] First, push the push button 106 to push the blade 2 out of the guide groove 108 to an appropriate length, pull the outer positioning plate 303 and the inner positioning plate 304 of the positioning assembly 3 apart to clamp the lower frame of the drawing board, and adjust the position of the extension seat 302 of the positioning assembly 3 to accurately align the blade 2 with the cutting position;

[0049] Then, the position of the fixing plate 402 of the support assembly 4 is adjusted to adjust the position of the roller 404 so that the roller 404 of the support assembly 4 presses the paper and can roll on the paper;

[0050] Finally, hold the handle 1 on the gripping groove 102 , place the thumb on the support base 101 , and move the handle 1 to move the tip of the blade 2 on the paper to complete paper cutting.

[0051] In this document, directional terms such as front, back, top, and bottom are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended for clarity and convenience in describing the technical solution. It should be understood that these terms are relative and may vary depending on usage and placement. The use of these directional terms should not limit the scope of protection claimed in this application.

[0052] The above embodiments and features of the embodiments may be combined with each other unless there is a conflict. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A utility knife, characterized in that: include: a shank having a tooth row provided therein; a blade, which is slidably connected to the handle, and a rear end of the blade is connected to a gear, and the gear is meshed with the gear row; And a positioning assembly, which includes a rotating plate, an extension seat, an outer positioning plate and an inner positioning plate. The rotating plate is perpendicular to the blade and one end is rotatably connected to the bottom of the handle. The extension seat is slidably mounted on the rotating plate. The outer positioning plate is connected to the extension seat and is parallel to the blade. The inner positioning plate and the outer positioning plate are connected by a first elastic member.

2. A utility knife according to claim 1, characterized in that: It also includes a support assembly, which includes a fixed seat, a fixed plate and a spring seat. The fixed seat is parallel to the blade, the upper end of the fixed seat is connected to the bottom of the knife handle, the fixed plate can be slidably inserted into the fixed seat, and the side of the fixed seat is provided with a plurality of positioning holes arranged at intervals along the vertical direction. The spring seat is fixed to the upper end of the fixed plate, and the lower end of the fixed plate is provided with a roller. The spring seat is provided with a positioning column connected by a second elastic member, and the positioning column is inserted into one of the positioning holes.

3. A utility knife according to claim 2, characterized in that: A spring hole is provided on one side of the spring seat, the second elastic member is fixed in the spring hole, the rear end of the positioning column is inserted into the spring hole and connected to the second elastic member, and the front end of the positioning column extends out of the spring hole and is inserted into the positioning hole.

4. A utility knife according to claim 2 or 3, characterized in that: The number of the support components is set to two, one of the support components is fixed to the rear end of the knife handle, and the other support component is fixed to the front part of the knife handle.

5. The utility knife according to claim 1, wherein: It also includes a collecting component, which includes a collecting box, a collecting plate and a baffle. The front side of the collecting box is open, and the collecting plate is detachably connected to the front side of the collecting box. The front side of the collecting box is detachably connected to the rear end of the knife handle. The upper surface of the collecting box is provided with a through slide groove, and the bottom of the baffle is provided with a slider, and the slider is arranged in the slide groove and can slide back and forth.

6. The utility knife according to claim 5, characterized in that: The two ends of the front side of the collection box are connected to the rear end of the knife handle through a plurality of pins. A limiting rod is provided at the bottom of the front side of the collection box. The collection plate is arranged between each of the pins and the limiting rod.

7. The utility knife according to claim 1, wherein: An adjustment hole is provided on the surface of the extension seat. A locking bolt is provided in the adjustment hole. The locking bolt passes through the adjustment hole and is firmly connected to the rotating plate.

8. The utility knife according to claim 7, wherein: The adjustment hole is a vertically arranged oblong hole, and a length mark is provided on one side of the adjustment hole.

9. The utility knife according to claim 1, wherein: The rear part of the knife handle is provided with a groove and the front part is provided with a guide plate. The tooth row is installed on one side of the groove. The gear is arranged in the groove. The upper end of the gear is provided with a protruding seat. The upper end of the protruding seat is provided with a push button. A guide groove is provided in the guide plate. The blade can be slidably arranged in the guide groove. The rear end of the blade is provided with a mounting hole, and the mounting hole is sleeved on the protruding seat.

10. The utility knife according to claim 1, characterized in that: A support seat is provided at the upper front end of the knife handle, and a hand-holding groove is provided at the lower rear end of the knife handle.

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