A paper cutter with safety protection structure
Patent Information
- Application Number
- CN202521952692.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-09-11
AI Technical Summary
[0003]针对上述及现有的相关技术，发明人认为往往存在以下缺陷：传统切纸刀刀片外露，在非使用状态下，如放置在桌面上容易因人为疏忽或意外碰撞而划伤使用者或他人，儿童可能会因好奇而触摸刀片导致受伤，或者用户在匆忙中拿取切纸刀时不小心被刀片割伤
本实用新型中，在用户需要进行纸张切割时，按动限位卡块，使限位卡块回到第一圆形槽的内部，此时限位卡块与方形固定块底部的卡接消除，随后用户下压活动杆，使活动杆带动刀座和刀片向下移动，使刀片从防护壳的底部移出，此时可以握动把手，带动防护壳移动，使刀片对纸张进行切割，在切割完成后按动推杆，使刀片保持在防护壳的内部，通过使第一磁吸块与第二磁吸块磁吸可以保持刀片在回收到防护壳内部后的稳定性，通过这一设置在非使用状态时刀完全隐藏在防护壳内，通过防护壳形成一道坚实的物理屏障，有效阻隔了人体与刀片的直接接触，大大降低了意外伤害的风险，尤其对于有儿童或宠物的家庭环境，提供了更可靠的安全保障。
Smart Images
Figure CN224880753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paper cutter technology, and in particular to a paper cutter with a safety protection structure. Background Technology
[0002] A paper cutter is a tool widely used in many fields such as office work, printing, packaging, and handicrafts. It is mainly used for the precise cutting of thin sheet materials such as paper, cardboard, and plastic film.
[0003] Regarding the above and existing related technologies, the inventor believes that the following defects often exist: the blade of a traditional paper cutter is exposed, and when not in use, if it is placed on a table, it is easy to cut the user or others due to human negligence or accidental collision. Children may touch the blade out of curiosity and get injured, or the user may be accidentally cut by the blade when grabbing the paper cutter in a hurry. Utility Model Content
[0004] The technical problem to be solved by this utility model is that the existing paper cutter lacks a safety protection device. Therefore, we propose a paper cutter with a safety protection structure.
[0005] To achieve the above objectives, this application adopts the following technical solution: a paper cutter with a safety protection structure, comprising a paper fixing plate: a pressure plate is slidably connected to the top of the paper fixing plate, a connecting shaft is fixedly connected to one end of the paper fixing plate, a rotating shaft is installed on one side of the connecting shaft, a protective shell is rotatably connected to the surface of the rotating shaft, a square groove is provided on the top of the protective shell, a handle is fixedly connected to one end of the protective shell, a movable rod is slidably connected inside the square groove, a blade holder is fixedly connected to the bottom of the movable rod, a blade is fixedly connected to the bottom of the blade holder, the surfaces of the blade holder and the blade are slidably connected to the interior of the protective shell, two square fixing blocks are fixedly connected to the top of the protective shell, a push rod is slidably connected inside the square fixing blocks, a first circular groove is provided at both ends of the movable rod, a first spring is fixedly connected inside the first circular groove, a limit block is fixedly connected to the other end of the first spring, and the surface of the limit block is slidably connected to the interior of the square fixing block.
[0006] Preferably, a first magnetic block is fixedly connected to the top of the tool holder, and a second magnetic block is fixedly connected to the top of the inside of the protective shell, with the first magnetic block and the second magnetic block being magnetically connected.
[0007] Preferably, the top of the tool holder is provided with a plurality of second circular grooves, and a second spring is fixedly connected inside the second circular groove, and the top end of the second spring is fixedly connected to the top end inside the protective shell.
[0008] Preferably, T-shaped grooves are provided at both ends of the interior of the protective shell, and T-shaped sliders are fixedly connected to both ends of the tool holder, with the surface of the T-shaped sliders slidably connected to the interior of the T-shaped grooves.
[0009] Preferably, a limiting block is fixedly connected to the surface of the limiting block, and the surface of the limiting block is slidably connected to the interior of the first circular groove.
[0010] Preferably, the top and bottom of the push rod surface are provided with sliding grooves, and the top and bottom of one end of the square fixing block are fixedly connected with sliding blocks, and the surface of the sliding groove is slidably connected to the inside of the sliding block.
[0011] Preferably, a third spring is slidably connected to the surface of the push rod, one end of the third spring is fixedly connected to the push rod, and the other end of the third spring is fixedly connected to one end inside the square fixing block.
[0012] The technical effects and advantages of this utility model are as follows: In this invention, when the user needs to cut paper, pressing the limiting block returns it to the inside of the first circular groove. At this time, the engagement between the limiting block and the bottom of the square fixing block is released. Then, the user presses down the movable rod, causing the rod to move the blade holder and blade downwards, allowing the blade to move out from the bottom of the protective shell. At this time, the user can grip the handle to move the protective shell, allowing the blade to cut the paper. After cutting, pressing the push rod keeps the blade inside the protective shell. By magnetically attracting the first and second magnetic blocks, the stability of the blade after it is retracted into the protective shell can be maintained. With this feature, the blade is completely hidden inside the protective shell when not in use. The protective shell forms a solid physical barrier, effectively preventing direct contact between the human body and the blade, greatly reducing the risk of accidental injury. It provides more reliable safety protection, especially for families with children or pets. Attached Figure Description
[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the main structure of the paper fixing plate of this utility model; Figure 2 This is a schematic diagram of the tool holder structure of this utility model; Figure 3 This is a schematic diagram of the bottom structure of the protective shell of this utility model; Figure 4 This is a schematic diagram of the square fixing block structure of this utility model; Figure 5This is a schematic diagram of the internal structure of the first circular groove of this utility model; Figure 6 This is a schematic diagram of the protective shell structure of this utility model.
[0014] Legend: 1. Paper fixing plate; 2. Pressing plate; 3. Connecting shaft; 4. Rotating shaft; 5. Protective shell; 6. Square groove; 7. Handle; 8. Movable rod; 9. Knife holder; 10. Blade; 11. Square fixing block; 12. Push rod; 13. First circular groove; 14. First spring; 15. Limiting block; 16. First magnetic block; 17. Second magnetic block; 18. Second circular groove; 19. Second spring; 20. T-shaped slide groove; 21. T-shaped slider; 22. Limiting block; 23. Sliding groove; 24. Sliding block; 25. Third spring. Detailed Implementation
[0015] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.
[0016] Reference Figure 1 - Figure 6As shown, this utility model provides a technical solution: a paper cutter with a safety protection structure, including a paper fixing plate 1; a pressure plate 2 is slidably connected to the top of the paper fixing plate 1; a connecting shaft 3 is fixedly connected to one end of the paper fixing plate 1; a rotating shaft 4 is installed on one side of the connecting shaft 3; a protective shell 5 is rotatably connected to the surface of the rotating shaft 4; a square groove 6 is opened on the top of the protective shell 5; a handle 7 is fixedly connected to one end of the protective shell 5; a movable rod 8 is slidably connected inside the square groove 6; a blade holder 9 is fixedly connected to the bottom of the movable rod 8; a blade 10 is fixedly connected to the bottom of the blade holder 9; the surfaces of the blade holder 9 and the blade 10 are slidably connected to the inside of the protective shell 5; two square fixing blocks 11 are fixedly connected to the top of the protective shell 5; a push rod 12 is slidably connected inside the square fixing blocks 11; and both ends of the movable rod 8 are provided with... A first circular groove 13 is fixedly connected to a first spring 14. The other end of the first spring 14 is fixedly connected to a limit block 15. The surface of the limit block 15 is slidably connected to the inside of the square fixing block 11. A first magnetic block 16 is fixedly connected to the top of the tool holder 9. A second magnetic block 17 is fixedly connected to the top of the inside of the protective shell 5. The first magnetic block 16 and the second magnetic block 17 are magnetically connected. Several second circular grooves 18 are opened on the top of the tool holder 9. A second spring 19 is fixedly connected to the inside of the second circular groove 18. The top of the second spring 19 is fixedly connected to the top of the inside of the protective shell 5. T-shaped sliding grooves 20 are opened at both ends of the inside of the protective shell 5. T-shaped sliders 21 are fixedly connected to both ends of the tool holder 9. The surface of the T-shaped sliders 21 is slidably connected to the inside of the T-shaped sliding grooves 20. Specifically: When the user needs to cut paper, press the limiting block 15 to return it to the inside of the first circular groove 13. At this time, the engagement between the limiting block 15 and the bottom of the square fixing block 11 is released. Then, the user presses down the movable rod 8, causing the movable rod 8 to move the knife holder 9 and the blade 10 downwards, so that the blade 10 moves out from the bottom of the protective shell 5. The movement of the knife holder 9 and the blade 10 can be restricted by the movement of the T-shaped slider 21 inside the T-shaped groove 20, providing guidance for the movement of the blade 10. After the blade 10 is removed from the inside of the protective shell 5, the elasticity of the first spring 14 abuts against the limiting block 15, causing the limiting block 15 to enter the inside of the square fixing block 11, thereby limiting the movable rod 8 and simultaneously limiting the blade 10. At this time, the handle 7 can be gripped to move the protective shell 5, allowing the blade 10 to cut the paper. After cutting, the push rod 12 is pressed, causing the push rod 12 to push the limiting block 15 out of the inside of the square fixing block 11, allowing the limiting block 15 to enter the first circular groove. Inside the protective shell 5, the locking block 15 and the square fixing block 11 are disengaged. At this time, the limiting of the movable rod 8 is released, and the elasticity of the second spring 19 automatically pulls the blade holder 9 to lift it. The blade holder 9 drives the blade 10 back into the protective shell 5, preventing the user from forgetting to retract the blade 10 into the protective shell 5. After the blade holder 9 is lifted, the movable rod 8 is also lifted. The first spring 14 pushes the limiting block 15, causing the limiting block 15 to engage with the top of the square fixing block 11, limiting the downward movement of the movable rod 8 and keeping the blade 10 inside the protective shell 5. By magnetically attracting the first magnetic block 16 and the second magnetic block 17, the stability of the blade 10 after being retracted into the protective shell 5 can be maintained. With this setting, the blade is completely hidden inside the protective shell 5 when not in use. The protective shell 5 forms a solid physical barrier, effectively preventing direct contact between the human body and the blade 10, greatly reducing the risk of accidental injury, especially for families with children or pets, providing more reliable safety protection.
[0017] Reference Figure 1 - Figure 6 As shown, in this embodiment: the surface of the limiting block 15 is fixedly connected to the limiting block 22, the surface of the limiting block 22 is slidably connected to the interior of the first circular groove 13, the top and bottom of the surface of the push rod 12 are both provided with sliding grooves 23, the top and bottom of one end of the square fixing block 11 are both fixedly connected to the sliding block 24, the surface of the sliding groove 23 is slidably connected to the interior of the sliding block 24, the surface of the push rod 12 is slidably connected to the third spring 25, one end of the third spring 25 is fixedly connected to the push rod 12, and the other end of the third spring 25 is fixedly connected to one end of the interior of the square fixing block 11; Specifically: By setting a limiting block 22 on the surface of the limiting block 15, the movement of the limiting block 15 can be restricted, preventing the limiting block 15 from completely dislodging from the inside of the first circular groove 13, ensuring the stability of the limiting between the movable rod 8 and the protective shell 5, and allowing the sliding block 24 to move inside the sliding groove 23, the movement of the push rod 12 can be made more stable and prevent deviation. By setting a third spring 25, the user can automatically drive the push rod 12 to reset when releasing the press of the push rod 12.
[0018] Working principle: When the user needs to cut paper, press the limiting block 15 to return it to the inside of the first circular groove 13. At this time, the engagement between the limiting block 15 and the bottom of the square fixing block 11 is released. Then, the user presses down the movable rod 8, causing the movable rod 8 to move the knife holder 9 and the blade 10 downwards, so that the blade 10 moves out from the bottom of the protective shell 5. The movement of the T-shaped slider 21 within the T-shaped groove 20 can limit the movement of the knife holder 9 and the blade 10, providing guidance for the movement of the blade 10. After being removed, the elasticity of the first spring 14 abuts against the limiting block 15, causing the limiting block 15 to enter the interior of the square fixing block 11, thereby limiting the movable rod 8 and simultaneously limiting the blade 10. At this time, the handle 7 can be gripped to move the protective shell 5, allowing the blade 10 to cut the paper. After cutting, the push rod 12 is pressed, causing it to push the limiting block 15 out of the interior of the square fixing block 11, allowing the limiting block 15 to enter the interior of the first circular groove 13. At this time, the engagement between the limiting block 15 and the interior of the square fixing block 11 is released. At this point, the limit of the movable rod 8 is released, and the elasticity of the second spring 19 automatically pulls the blade holder 9, causing it to lift. The blade holder 9 then drives the blade 10 back into the protective shell 5, preventing the user from forgetting to retract the blade 10 into the protective shell 5. After the blade holder 9 is lifted, the movable rod 8 also lifts. The first spring 14 pushes the limiting block 15, causing the limiting block 15 to engage with the top of the square fixing block 11, restricting the downward movement of the movable rod 8 and keeping the blade 10 inside the protective shell 5. The blade can be held in place by magnetically attracting the first magnetic block 16 and the second magnetic block 17. The stability of the piece 10 after it is recycled into the protective shell 5 is ensured by setting a limiting block 22 on the surface of the limiting block 15 to restrict the movement of the limiting block 15 and prevent the limiting block 15 from completely dislodging from the inside of the first circular groove 13. This ensures the stability of the limiting between the movable rod 8 and the protective shell 5, and allows the sliding block 24 to move inside the sliding groove 23. This makes the movement of the push rod 12 more stable and prevents deviation. By setting a third spring 25, the user can automatically drive the push rod 12 to reset when the user releases the press of the push rod 12.
[0019] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.
Claims
1. A paper cutter with a safety protection structure, comprising a paper fixing plate (1): characterized in that, A pressure plate (2) is slidably connected to the top of the paper fixing plate (1). A connecting shaft (3) is fixedly connected to one end of the paper fixing plate (1). A rotating shaft (4) is installed on one side of the connecting shaft (3). A protective shell (5) is rotatably connected to the surface of the rotating shaft (4). A square groove (6) is opened on the top of the protective shell (5). A handle (7) is fixedly connected to one end of the protective shell (5). A movable rod (8) is slidably connected inside the square groove (6). A knife holder (9) is fixedly connected to the bottom of the movable rod (8). A blade (10) is fixedly connected to the bottom of the knife holder (9). The surfaces of the blade holder (9) and the blade (10) are slidably connected to the interior of the protective shell (5). Two square fixing blocks (11) are fixedly connected to the top of the protective shell (5). A push rod (12) is slidably connected inside the square fixing block (11). A first circular groove (13) is opened at both ends of the movable rod (8). A first spring (14) is fixedly connected inside the first circular groove (13). A limit block (15) is fixedly connected to the other end of the first spring (14). The surface of the limit block (15) is slidably connected to the interior of the square fixing block (11).
2. The paper cutter with a safety protection structure according to claim 1, characterized in that: The top of the blade holder (9) is fixedly connected to a first magnetic block (16), and the top of the inside of the protective shell (5) is fixedly connected to a second magnetic block (17). The first magnetic block (16) and the second magnetic block (17) are magnetically connected.
3. A paper cutter with a safety protection structure according to claim 1, characterized in that: The top of the knife holder (9) is provided with several second circular grooves (18), and a second spring (19) is fixedly connected inside the second circular groove (18). The top of the second spring (19) is fixedly connected to the top of the protective shell (5).
4. A paper cutter with a safety protection structure according to claim 1, characterized in that: The protective shell (5) has T-shaped grooves (20) at both ends inside, and T-shaped sliders (21) are fixedly connected to both ends of the knife holder (9). The surface of the T-shaped sliders (21) is slidably connected to the inside of the T-shaped grooves (20).
5. A paper cutter with a safety protection structure according to claim 1, characterized in that: The surface of the limiting block (15) is fixedly connected to the limiting block (22), and the surface of the limiting block (22) is slidably connected to the interior of the first circular groove (13).
6. A paper cutter with a safety protection structure according to claim 1, characterized in that: The push rod (12) has sliding grooves (23) at the top and bottom. The square fixing block (11) has a sliding block (24) fixedly connected to the top and bottom of one end. The surface of the sliding groove (23) is slidably connected to the inside of the sliding block (24).
7. A paper cutter with a safety protection structure according to claim 1, characterized in that: A third spring (25) is slidably connected to the surface of the push rod (12). One end of the third spring (25) is fixedly connected to the push rod (12), and the other end of the third spring (25) is fixedly connected to one end inside the square fixing block (11).