Cutter packaging box
By incorporating a viewing window and multi-level grips into the knife packaging box, combined with a locking structure and venting gap, the problems of inconvenient operation and slippage in existing knife packaging boxes are solved, achieving efficient and stable knife management and retrieval.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN XINDI MECHANICAL TOOL CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-21
AI Technical Summary
Existing knife packaging boxes are inconvenient to use, making it difficult to visually observe the knife models inside. They are also prone to slipping when hands are oily or wet, affecting work efficiency.
The design incorporates a tube body with a viewing window and a cover structure with multi-level grips, combined with a locking mechanism and venting gaps, to achieve intuitive observation and a secure connection, preventing slippage.
It improves tool retrieval efficiency, reduces operation time, enhances grip stability in a lubricated environment, and reduces the risk of component damage.
Smart Images
Figure CN224146625U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of knife storage devices, and more particularly to a knife packaging box. Background Technology
[0002] Cutting tools are tools used for cutting and machining in mechanical manufacturing. Depending on the application, cutting tools can be categorized as woodworking tools, kitchen knives, nail clippers, dental tools, industrial tools, etc. Knife packaging boxes, as specially designed tool storage devices, primarily function to provide a safe and convenient storage environment for various tools, while facilitating quick access and management by users. With the rapid development of the machining industry, the requirements for tool management efficiency are increasing. Efficient tool management not only improves work efficiency but also reduces economic losses caused by lost or damaged tools. In existing knife packaging boxes, the common design for safe storage and easy management involves a simple closed box structure that completely encloses the tool. The box includes a tube and a cap that fits into the tube. The cap is pressed firmly into the tube, and the friction between the outer wall of the cap and the inner wall of the tube secures the box, preventing the tool from falling out. While this method meets basic storage needs to some extent, it does not fundamentally solve the problem of ease of operation in practical applications. This is especially true in the beauty, medical, and industrial fields, where tools come in a wide variety of models and specifications. Specifically, nail tools in the beauty industry, dental tools in the medical field, and alloy grinding and cutting tools in the industrial field have all developed into diverse product series due to differences in application scenarios, functional requirements, and operational precision. For ease of categorization and storage, users typically store different models of tools in separate tool boxes. However, when a user needs to retrieve a specific tool, the contents of each box are not readily visible, requiring them to open the box one by one to find the correct tool, which is time-consuming. Furthermore, users may come into contact with oil or water during actual use. For example, during dental procedures, teeth are constantly rinsed with water, leaving hands wet; during alloy grinding and cutting, hands may come into contact with machine oil. Additionally, during nail procedures, nail technicians usually wear gloves, which can become covered in splattered nail powder. In these situations, if a user needs to change to a different tool, the tool box lid can easily slip, making it difficult to retrieve and increasing the overall difficulty of the operation. These problems have seriously affected work efficiency and urgently require a more optimized solution. Utility Model Content
[0003] To facilitate users' observation of the contents of the knife packaging box and make it easier to access specific models of knives, and to ensure easy access to the knife box lid during actual use, preventing slippage when the user's hand is gripping the lid, this application provides a knife packaging box.
[0004] This application provides a knife packaging box, including a tube and a cover. One end of the tube is closed along its length, while the other end has an opening. The tube has a cavity for holding the knife, which communicates with the opening. The tube also has at least one viewing window. The cover is integrally formed and coaxially arranged from bottom to top with: an insertion part and a gripping part. The insertion part can be inserted into the tube through the opening, and its outer wall abuts against the inner wall of the tube. The gripping part, from bottom to top, includes: a first gripping part, a second gripping part, and a third gripping part. The lower surface of the first gripping part is flush with the insertion part. The tube body is connected to the insertion part, and the width of the lower bottom surface of the first gripping part is greater than the cross-sectional width of the insertion part. Both the first and third gripping parts are frustum structures with four flat sides. The area of the lower bottom surface of the first gripping part is greater than the area of the upper bottom surface, while the area of the lower bottom surface of the third gripping part is smaller than the area of the upper bottom surface. The second gripping part is a prism structure, and the cross-sectional width of the second gripping part is smaller than the cross-sectional widths of the first and third gripping parts. A locking structure is provided on the inner wall of the tube's placement cavity, and the tube body is locked to the insertion part through this locking structure. By adopting the above technical solution, the viewing window on the tube body allows the user to directly observe the status of the tool inside the placement cavity without opening the cover, thereby quickly locating the required tool model and significantly improving retrieval efficiency. Simultaneously, the cover is designed as an integrated structure including the insertion part and multiple gripping parts, wherein the insertion part tightly abuts against the inner wall of the tube and is securely connected through the locking structure on the inner wall of the placement cavity, ensuring that the cover remains sealed even under external force and preventing accidental tool detachment. Furthermore, the grip section comprises a first grip section, a second grip section, and a third grip section, with an ingenious structural design: the first and third grip sections both employ a frustum structure, respectively increasing and decreasing the contact area during gripping; while the second grip section is a prism structure with a smaller cross-sectional width compared to the first and third grip sections. The second grip section connects to the smaller bottom surfaces of the first and third grip sections, creating natural grip grooves on the sides that facilitate finger application. Notably, the four sides of the frustum structure are inclined planes, while the four sides of the prism structure are vertical planes, forming an angle between the inclined and vertical planes, which facilitates finger application and effectively prevents hand slippage. This design not only improves ease of operation in dry environments but also effectively prevents hand slippage when hands are coated with lubricant during workpiece processing, ensuring easy opening and closing of the cover and further optimizing the user experience. Preferably, the angle between the side edges of the first grip portion and the third grip portion and the extension line of the grip portion in the width direction is 45°-75°.By adopting the above technical solution, the side edges of the first and third gripping parts form an angle of 45°-75° with the extension line of the gripping part's width direction, giving the gripping part an ergonomic structural feature. This design effectively distributes the pressure applied to the user's hand during gripping, avoiding problems such as unstable grip or uneven force distribution caused by excessively large or small angles. Simultaneously, this angle range further optimizes the gripping convenience while ensuring structural strength. Specifically, when the user needs to take out or put in a knife from its packaging, especially when their hands are coated with lubricant, this specific angle design significantly increases friction, reduces the possibility of slippage, and thus improves the convenience and reliability of operation. Preferably, both the first and third gripping parts are symmetrically arranged square truncated pyramid structures. By adopting the above technical solution, the first and third gripping parts are designed as symmetrical square truncated pyramid structures, which improves aesthetics while effectively enhancing the user's convenience and stability during operation. Specifically, the sides of the regular square truncated pyramid structure are flat, facilitating finger gripping, and the symmetrically arranged first and third gripping parts create a reasonable force distribution. When the user needs to open or close the cover, their fingers can naturally rest on the flat surfaces of the first and third gripping parts, increasing the contact area and thus improving friction, preventing slippage due to lubricated hands. Furthermore, the design of the regular square truncated pyramid structure ensures good gripping performance in different directions for both the first and third gripping parts, further enhancing operational flexibility. This symmetrical and regular geometric shape not only facilitates manufacturing but also ensures the reliability and consistency of the cover during use. Preferably, the tube is a cuboid tubular structure, comprising an outer shell and an inner shell. The outer shell has a viewing window on its side wall, and the inner shell has a viewing panel corresponding to the viewing window. By adopting the above technical solution, the tube uses a cuboid tubular structure, and the clever combination of the outer and inner shells makes the overall structure compact and stable, achieving a reasonable layout of functional components within a limited space. This layered structure not only enhances the strength and durability of the tube body but also provides reliable protection for internal components, effectively extending the product's lifespan. A viewing window is provided on the outer shell's side wall, and a corresponding viewing panel is precisely installed on the inner shell. This innovative design provides users with an intuitive and convenient way to observe the internal working status or material conditions without disassembling the tube body, reducing the time cost of opening and searching one by one, greatly improving operational convenience and efficiency, reducing the risk of component damage due to frequent disassembly and assembly, and also lowering maintenance costs. Preferably, the area of the viewing panel is s, and the area of the tube body's side wall is S, where s:S ranges from 5 to 9.By adopting the above technical solution, the ratio of the visible panel area to the tube sidewall area is set to 5-9, which effectively balances observation needs and structural strength. When the ratio is too small, the visible window area is insufficient, making it difficult to clearly observe the storage status of the internal tools and affecting retrieval efficiency; while when the ratio is too large, the structural strength of the tube sidewall will be significantly reduced, which may lead to deformation or damage during use. Therefore, controlling the ratio within the range of 5-9 ensures that users can intuitively and comprehensively view the internal condition of the tool box, while also ensuring the stability and durability of the overall tube structure, thereby improving the user experience and tool management efficiency. Preferably, the locking structure includes protrusions and grooves. At least one diagonal protrusion is provided on the inner wall of the tube's placement cavity, and the insertion part is provided with a groove corresponding to the protrusion. When the tube and the cover are connected, the protrusion is embedded in the corresponding groove. By adopting the above technical solution, the inner wall of the tube's placement cavity is provided with protrusions, and the insertion part is provided with grooves at corresponding positions. When the cover is inserted into the tube, the protrusions and grooves cooperate to achieve locking. This design not only effectively prevents the cover from accidentally detaching under external force, but also enhances the stability of the connection through the precise engagement of the protrusion and the groove. Specifically, during the insertion of the cover, the protrusion gradually enters the groove. Due to their matching shapes, a tight mechanical engagement is formed when they are in place, thus avoiding the problem of loosening caused by external force or vibration in traditional friction connections. Furthermore, this structure achieves reliable fixation without additional sealing materials, simplifying the assembly process, improving ease of use, and providing a more stable feel for users operating in a lubricated environment. Preferably, at least one venting gap is provided near the protrusion on the tube body, and the venting gap communicates with the placement cavity. By adopting the above technical solution, when the insertion part of the cover is inserted into the placement cavity of the tube body, the venting gap near the protrusion on the tube body allows air in the placement cavity to be discharged in a timely manner. Without an exhaust gap, when the cover is inserted, the air in the placement cavity is compressed, increasing the insertion resistance and making it difficult to close the cover to the tube. When the cover is opened, the compressed air in the placement cavity causes the gas pressure inside the cavity to be lower than the external gas pressure, causing the cover to be sucked in and affecting the smooth connection between the cover and the tube. The existence of an exhaust gap effectively solves this problem, allowing the insertion part to be inserted into the tube more smoothly, while ensuring that the protrusion in the locking structure can be accurately embedded in the groove, thereby achieving a stable connection between the cover and the tube. This design not only improves the sealing performance of the tool box but also significantly enhances the user's ease of operation. Preferably, the groove surface is an arc-shaped transition surface, and the corresponding contact surface between the protrusion and the groove is an arc-shaped transition surface. By adopting the above technical solution, the groove surface is designed as an arc-shaped transition surface, allowing the protrusion and the groove to be embedded more smoothly during the locking process.Specifically, when the plug of the cover is inserted into the tube, the arc-shaped transition surface effectively reduces the contact stress between the two, avoiding material damage or jamming caused by sharp edges. Simultaneously, the contact surfaces of the protrusion and groove also adopt an arc-shaped transition surface design, further improving the fit and stability of both, ensuring a tighter and more reliable connection between the cover and the tube. This design not only improves operational convenience but also extends the service life of the tool holder. Preferably, the end of the plug near the tube is chamfered. By adopting the above technical solution, the chamfer at the end of the plug near the tube effectively improves the insertion experience between the plug and the tube. In actual operation, when the user inserts the plug of the cover into the tube, the chamfer design acts as a guide, making it easier to align the plug with the opening of the tube. This design not only reduces jamming caused by angular deviation during insertion but also reduces friction between the plug and the inner wall of the tube, thereby improving the smoothness of the connection between the cover and the tube. Furthermore, the chamfered edges also protect the opening edge of the tube to some extent, preventing structural damage caused by forced insertion and thus extending the overall service life of the tool box. Preferably, several protrusions are provided at both opposite corners of the insertion part. By adopting the above technical solution, several protrusions at both opposite corners of the insertion part provide a more stable locking effect when the cover is connected to the tube. Specifically, when the insertion part is inserted into the placement cavity of the tube, the protrusions cooperate with the locking structure of the inner wall of the placement cavity to form a multi-point contact locking state. Since the protrusions are distributed at both opposite corners of the insertion part, this design can not only evenly distribute the pressure generated during insertion, but also effectively prevent the cover from rotating or loosening when subjected to external forces. In addition, the protrusion layout at both opposite corners makes the insertion and removal of the insertion part smoother, reducing frictional resistance and improving the convenience of operation. This structural design significantly enhances the sealing and stability of the tool box, while providing users with a reliable user experience during frequent tool changes.
[0005] In summary, this application includes at least one of the following beneficial technical effects:
[0006] 1. By setting a viewing window and installing a viewing panel on the tube body, users can intuitively observe the tool information inside the tube body without opening the cover. This design avoids the tedious operation of opening the cover one by one to find a specific model of tool, thus significantly improving tool management efficiency; because the ratio of the area of the viewing window to the area of the tube body side wall is reasonable, it can ensure a sufficient observation range without affecting the overall structural strength;
[0007] 2. The grip section adopts a multi-level design, with the size of the first grip section, the second grip section and the third grip section gradually changing, which makes it easier for users to apply force when gripping, especially when the hand is covered with lubricating oil, and can also effectively prevent slippage, thereby greatly improving the ease of operation;
[0008] 3. The first and third grip sections are designed as quadrangular frustum structures, with the angle between the side and the extension line of the width direction being 45°-75°. This geometric design not only increases friction but also facilitates natural finger contact, providing a more comfortable grip experience. The middle second grip section is a cuboid structure, with a cross-sectional width smaller than the upper and lower parts, forming a natural concave area, which further optimizes the force distribution during gripping, making operation more effortless and stable. Attached Figure Description
[0009] Figure 1 This is an exploded view of a knife packaging box according to this application;
[0010] Figure 2 This is a front view of the lid of a knife packaging box according to this application;
[0011] Figure 3 This is a structural diagram of a knife packaging box according to this application.
[0012] Explanation of reference numerals in the attached drawings: 1. Tube body; 2. Cover body; 3. Locking structure; 1a. Outer shell; 1b. Inner shell; 11. Placement cavity; 12. Opening; 13. Viewing window; 14. Viewing panel; 15. Exhaust gap; 31. Protrusion; 32. Groove; 21. Insertion part; 22. Grip part; 221. First grip part; 222. Second grip part; 223. Third grip part. Detailed Implementation
[0013] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0014] This application provides a knife packaging box, which is described in an embodiment. Figure 1 and Figure 2 The device consists of a separate tube 1 and a cover 2, with a locking structure 3 between them. In this embodiment, the tube 1 is a rectangular tubular structure with a storage cavity 11 for placing a knife inside. One end of the tube 1 is closed along its length, while the other end has an opening 12 that communicates with the storage cavity 11. After the knife is placed into the storage cavity 11 through the opening 12, the cover 2 is closed over the opening 12 of the tube 1 to store the knife.
[0015] In this embodiment, the tube body 1 is a replaceable split structure. Specifically, the tube body 1 consists of two layers: an outer shell 1a and an inner shell 1b. Both the inner shell 1b and the outer shell 1a are rectangular tubular structures. The side wall of the outer shell 1a has two viewing windows 13, which are positioned opposite each other on two opposing sides of the outer shell 1a, allowing the user to observe the knife in the placement cavity 11 from multiple angles. The inner shell 1b has a viewing panel 14 corresponding to the viewing windows 13. In this embodiment, the viewing panel 14 is a visible acrylic plate. The inner shell 1b is a one-piece molded visible acrylic inner shell 1b, which is durable and inexpensive. The user can observe the visible acrylic plate through the viewing windows 13, and through the visible acrylic plate, they can observe the knife inside the acrylic inner shell 1b.
[0016] The area of the visible panel 14 is s, and the area of one side wall of the tube body 1 is S. The range of s:S is 5-9, ensuring that the visible window 13 is neither too large to affect the structural strength nor too small to affect the observation effect. This improves the overall structural stability and durability of the tube body 1, allowing users to intuitively and comprehensively view the inside of the knife packaging box. The outer shell 1a of the tube body 1 can be integrally formed or a structure formed by splicing multiple plates.
[0017] Specifically, the cover 2 is integrally formed and includes a coaxially arranged insertion part 21 and a gripping part 22. The insertion part 21 has a cuboid structure and can be inserted into the tube 1 to abut against the inner wall of the tube 1. The end of the insertion part 21 near the tube 1 is provided with a chamfer to facilitate the insertion part 21 into the opening 12. The gripping part 22 is provided with a first gripping part 221, a second gripping part 222 and a third gripping part 223 from bottom to top. The second gripping part 222 is located between the first gripping part 221 and the third gripping part 223. The bottom surface of the first gripping part 221 is connected to the insertion part 21, the top surface of the first gripping part 221 is connected to one side of the second gripping part 222, and the other side of the second gripping part 222 is connected to the third gripping part 223.
[0018] In this embodiment, the first grip portion 221 and the third grip portion 223 are both regular square frustum structures with four sides having the same plane, and the second grip portion 222 is a square prism structure. The area of the lower bottom surface of the first grip portion 221 is larger than the area of the upper bottom surface, and the area of the lower bottom surface of the third grip portion 223 is smaller than the area of the upper bottom surface. The smaller bottom surfaces of the first grip portion 221 and the third grip portion 223 are arranged opposite each other, so that the first grip portion 221 and the third grip portion 223 are symmetrically arranged at both ends of the second grip portion 222. The side walls of the square prism structure of the third grip portion 223 form obtuse angles with the side walls of the first grip portion 221 and the third grip portion 223. The angle between the side edges of the first grip portion 221 and the third grip portion 223 and the extension line of the width direction of the grip portion 22 is 45°-75°, forming a grip groove 32 structure that is narrow in the middle and wide at both ends for easy hand gripping. Furthermore, the width of the bottom surface of the first gripping part 221 is greater than the cross-sectional width of the insertion part 21, so that when the insertion part 21 is inserted into the tube body 1, the bottom surface of the first gripping part 221 abuts against the end face at the opening 12 of the tube body 1, causing the gripping part 22 to be exposed outside the tube body 1. The length of the second gripping part 222 can be adjusted according to actual needs, usually 3-5cm, to ensure gripping comfort.
[0019] Specifically, the locking structure 3 includes: a plurality of protrusions 31 disposed on the inner wall of the placement cavity 11 and a plurality of grooves 32 disposed on the outer wall of the insertion part 21. The protrusions 31 and the grooves 32 correspond one to one. The groove surface of the groove 32 is an arc-shaped transition surface, and the corresponding contact surface between the protrusion 31 and the groove 32 is also an arc-shaped transition surface.
[0020] In this embodiment, three protrusions 31 are respectively provided on one opposite corner of the inner wall of the placement cavity 11 of the tube body 1, and three grooves 32 are provided on each of the two opposite corners of the insertion part 21. Furthermore, an exhaust gap 15 communicating with the placement cavity 11 is opened on the side wall of the tube body 1 near the protrusions 31, and a long strip-shaped exhaust gap 15 is vertically provided on the side walls on both sides of the protrusions 31 to discharge the air generated during insertion and prevent difficulty in insertion and removal due to air pressure changes. In addition, the cross-section of the placement cavity 11 is designed to be square in this embodiment, and correspondingly, the cross-section of the snap-fit part is also square. In this way, as long as any opposite corner of the cover 2 is aligned with the opposite corner of the placement cavity 11 of the tube body 1 and the cover 2 is pressed down, the protrusions 31 can be embedded into the grooves 32 to achieve a locking effect.
[0021] Reference Figure 3After inserting the cover 2 into the tube 1, the knife packaging box of this embodiment is obtained. The implementation principle of this embodiment is as follows: by dividing the tube 1 into a split design of an outer shell 1a and an inner shell 1b, a viewing window 13 is provided on each opposite side of the outer shell 1a, and the inner shell 1b is a one-piece molded visible acrylic inner shell 1b. Users can intuitively observe the internal knife models through the viewing windows 13 on both sides, without having to open the box cover one by one to find them, which significantly improves the search efficiency. By optimizing the structural design of the grip part 22, especially by adopting a symmetrical four-sided frustum structure and a design that is narrow in the middle and wide at both ends, the phenomenon of slippage when the hand is covered with lubricating oil is effectively prevented, improving the ease of operation. By setting the locking structure 3, including a protrusion 31, a groove 32 and an exhaust gap 15, a reliable locking function is achieved, while reducing the impact of friction and air pressure changes during the insertion process. The overall design allows users to easily observe the knives inside the packaging box and conveniently access specific models of knives. At the same time, it prevents slippage when picking up the lid of the knife packaging box during actual use, thus enabling easy access to the lid.
[0022] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A knife packaging box, comprising a tube (1) and a cover (2), wherein one end of the tube (1) is closed along its length and the other end is provided with an opening (12), and a placement cavity (11) for placing knives is provided inside the tube (1), the placement cavity (11) communicating with the opening (12), characterized in that, The tube body (1) is provided with at least one viewing window (13); The cover (2) is integrally formed and has the following coaxially arranged from bottom to top: a plug-in part (21) and a grip part (22). The insertion part (21) can be inserted into the tube body (1) along the opening (12), and the outer wall of the insertion part (21) abuts against the inner wall of the tube body (1); The gripping part (22) is provided from bottom to top as follows: a first gripping part (221), a second gripping part (222) and a third gripping part (223). The bottom surface of the first gripping part (221) is connected to the plug-in part (21), and the width of the bottom surface of the first gripping part (221) is greater than the cross-sectional width of the plug-in part (21); Both the first grip (221) and the third grip (223) are quadrangular frustum structures and the four sides of the quadrangular frustum are planes. The area of the bottom surface of the first grip (221) is greater than the area of the top surface, and the area of the bottom surface of the third grip (223) is smaller than the area of the top surface. The second grip (222) is a quadrangular prism structure, and the cross-sectional width of the second grip (222) is smaller than the cross-sectional width of the first grip (221) and the third grip (223); The inner wall of the placement cavity (11) of the tube body (1) is provided with a locking structure (3), and the tube body (1) is locked with the insertion part (21) through the locking structure (3).
2. The knife packaging box according to claim 1, characterized in that, The angle between the side edges of the first grip (221) and the third grip (223) and the extension line of the width direction of the grip (22) is 45°-75°.
3. The knife packaging box according to claim 1, wherein, Both the first gripping part (221) and the third gripping part (223) are regular square frustum structures and are symmetrically arranged.
4. The knife packaging box according to claim 1, wherein, The tube (1) is a rectangular tubular structure. The tube (1) includes an outer shell (1a) and an inner shell (1b). The outer shell (1a) has a viewing window (13) on its side wall, and the inner shell (1b) has a viewing panel (14) at the position corresponding to the viewing window (13).
5. A knife packaging box according to claim 4, wherein The area of the visible panel (14) is s, and the area of the side wall of the tube (1) is S, where the range of s:S is 5-9.
6. The knife packaging box according to claim 1, wherein, The locking structure (3) includes a protrusion (31) and a groove (32). At least one diagonal protrusion (31) is provided on the inner wall of the placement cavity (11) of the tube body (1). The insertion part (21) is provided with a groove (32) corresponding to the protrusion (31). When the tube body (1) and the cover body (2) are connected, the protrusion (31) is embedded in the corresponding groove (32).
7. A knife packaging box according to claim 6, wherein The tube body (1) has at least one exhaust gap (15) near the protrusion (31), and the exhaust gap (15) is connected to the placement cavity (11).
8. The knife packaging box according to claim 6, wherein, The groove (32) is provided with an arc transition surface, and the contact surface of the corresponding convex (31) and the groove (32) is also an arc transition surface.
9. The knife packaging box according to claim 1, wherein, The plug-in part (21) is provided with a chamfer near one end of the pipe body (1).
10. The knife packaging box according to claim 6, wherein, Both opposite corners of the plug-in part (21) are provided with a plurality of convexes (31).