Multi-purpose knife
Patent Information
- Application Number
- CN202522328996.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-03
AI Technical Summary
The existing functional differences between utility knives and scissors mean that users need to purchase them separately, increasing purchase costs and taking up space.
Design a multi-functional knife that integrates scissor and utility knife components within the same housing, allowing for extension and retraction through different openings to meet the needs of various cutting scenarios.
Reducing the number of knives lowers purchase costs, facilitates storage, and improves operational convenience and safety.
Smart Images
Figure CN224928033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting tool technology, and in particular to a multifunctional cutting tool. Background Technology
[0002] In both home life and daily work scenarios, utility knives and scissors are essential tools for meeting various cutting needs. Utility knives excel when handling hard materials such as cardboard and plastic sheets, or when requiring straight, precise cuts, effectively ensuring the neatness of the cut edges. Scissors, on the other hand, rely on their interlocking double blade structure, making them more flexible and convenient when cutting flexible materials (such as fabric and soft plastics) or making curved or irregular cuts.
[0003] However, due to the significant differences in the functional design of utility knives and scissors, and their usual production and sales as separate products, users must purchase these two types of knives separately when facing diverse cutting situations. This not only increases the number of knives required by the user, leading to additional purchase costs, but also takes up more space when storing the knives.
[0004] Therefore, there is an urgent need to develop a multi-functional cutting tool to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this utility model is to provide a multi-functional cutting tool that can effectively meet the needs of different cutting scenarios, reduce the number of tools to carry, facilitate tool storage, and reduce the user's purchase cost.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] This utility model provides a multi-functional cutting tool, including:
[0008] The housing has a first opening and a second opening at its opposite ends;
[0009] The scissor assembly includes a first blade and a second blade that are hinged together. The first blade and the second blade can extend out of the housing through the first opening to enter the working state, or retract into the housing through the first opening to enter the storage state.
[0010] A utility knife assembly includes a third blade that can extend out of the housing through the second opening to enter a working state, or retract into the housing through the second opening to enter a stored state.
[0011] In some embodiments, the scissor assembly further includes a first pusher connected to the first blade or the second blade, the housing having a first elongated hole, the first pusher being configured to partially extend out of the first elongated hole and be reciprocating along the length of the first elongated hole to drive the first blade and the second blade to extend or retract from the housing.
[0012] In some embodiments, the first pusher is configured as a ring structure.
[0013] In some embodiments, the housing has a second elongated hole, and the utility knife assembly further includes a second pusher. The second pusher is connected to the third blade and can be engaged in the second elongated hole. The second pusher can reciprocate along the length of the second elongated hole to drive the third blade to extend or retract from the housing.
[0014] In some embodiments, the first elongated hole is disposed on the side wall of the housing, and the second elongated hole is disposed on the main wall of the housing, the main wall being adjacent to the side wall.
[0015] In some embodiments, a groove is provided on the side wall, the extension direction of the groove is consistent with the length direction of the first elongated hole, the first elongated hole is formed on the bottom wall of the groove, and the first pusher can stop against the groove side walls at opposite ends along its own length direction.
[0016] In some embodiments, the multi-functional cutting tool further includes a locking structure, which includes a button and a slot. The button passes through the shell wall of the housing, and the slot is disposed on the first blade with the slot opening facing the button. The button has an unlock position and a locked position. When the button is in the unlock position, the button is separated from the slot. When the button is in the locked position, the button is engaged inside the slot and fixes the first blade in the current position.
[0017] In some embodiments, when the scissor assembly is in a retracted state, the first blade and the second blade inside the housing overlap each other; the scissor assembly further includes an elastic element connected between the first blade and the second blade, the elastic element always having an elastic tendency to move the first blade and the second blade away from each other; when the scissor assembly is in a retracted state, the inner wall of the housing can press against the outer walls of the first blade and the second blade to compress the elastic element; when the scissor assembly is in a working state, the first blade and the second blade can open to a preset angle under the elastic force of the elastic element.
[0018] In some embodiments, the third blade is provided with pre-formed fracture grooves at intervals along its own length direction, and the pre-formed fracture grooves are configured to allow the third blade to break along its own segments.
[0019] In some embodiments, a break ridge is provided at the second opening, and the prefabricated fracture groove can be aligned with and abut against the break ridge.
[0020] The beneficial effects of this utility model are:
[0021] The multi-functional knife provided by this utility model integrates a scissor assembly and a utility knife assembly within the same housing, and allows for the extension and retraction of both types of cutting tools through a first opening and a second opening, respectively. This allows users to select the appropriate type of tool for cutting in different scenarios. Thus, this multi-functional knife effectively meets the needs of various cutting scenarios, reduces the number of tools required, facilitates tool storage, and lowers the user's purchase cost. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of a multi-functional cutting tool from one perspective, provided by an embodiment of this utility model;
[0024] Figure 2 This is a structural schematic diagram of a multi-functional cutting tool from another perspective provided by an embodiment of this utility model;
[0025] Figure 3 This is an exploded structural diagram of the multifunctional cutting tool provided in this embodiment of the utility model;
[0026] Figure 4 yes Figure 2 A schematic diagram of the structure with the shell hidden in the middle;
[0027] Figure 5 This is a schematic diagram of the scissor assembly provided in an embodiment of the present invention.
[0028] In the picture:
[0029] 1. Shell; 11. First opening; 12. Second opening; 13. First elongated hole; 14. Second elongated hole; 15. Side wall; 16. Main wall;
[0030] 2. Scissors assembly; 21. First blade; 22. Second blade; 23. First pusher;
[0031] 3. Utility knife assembly; 31. Third blade; 32. Second pusher;
[0032] 4. Locking structure; 41. Button; 42. Card slot;
[0033] 5. Groove section; 51. Bottom wall of the groove; 52. Side wall of the groove. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0041] like Figures 1-5 As shown, this embodiment provides a multi-functional knife, including a housing 1, a scissor assembly 2, and a utility knife assembly 3.
[0042] The shell 1 has a first opening 11 and a second opening 12 at opposite ends.
[0043] The scissor assembly 2 includes a first blade 21 and a second blade 22 hinged together. The first blade 21 and the second blade 22 can extend out of the housing 1 through the first opening 11 to enter the working state, or retract into the housing 1 through the first opening 11 to enter the storage state. In the working state, the first blade 21 and the second blade 22 can rotate relative to each other around the hinge axis to achieve the cutting action.
[0044] The utility knife assembly 3 includes a third blade 31, which can extend out of the housing 1 through the second opening 12 to enter the working state, or retract into the housing 1 through the second opening 12 to enter the storage state.
[0045] In practice, when a user needs to use the scissors assembly 2 for cutting, they simply extend the first blade 21 and the second blade 22 out of the first opening 11 from the housing 1 to perform the cutting action. After cutting, the first blade 21 and the second blade 22 are then retracted into the housing 1 for storage. Similarly, when a user needs to use the utility knife assembly 3 for cutting, they simply extend the third blade 31 out of the second opening 12 from the housing 1 to perform the cutting action. After cutting, the third blade 31 is then retracted into the housing 1 for storage.
[0046] It should be noted that when the first blade 21, the second blade 22, and the third blade 31 are simultaneously housed inside the housing 1, the first blade 21 and the second blade 22 are misaligned with the third blade 31 and do not interfere with each other.
[0047] The multi-functional knife provided in this embodiment integrates a scissor assembly 2 and a utility knife assembly 3 within the same housing 1, and allows for the extension and retraction of the two types of cutting tools through a first opening 11 and a second opening 12, respectively. This allows users to select the appropriate type of knife for cutting in different scenarios. Thus, this multi-functional knife effectively meets the needs of different cutting scenarios, reduces the number of knives to carry, facilitates knife storage, and lowers the user's purchase cost.
[0048] like Figure 2 and Figure 4 As shown, in some embodiments, when the scissor assembly 2 is in the retracted state, the first blade 21 and the second blade 22 inside the housing 1 overlap each other. That is, the first blade 21 and the second blade 22 overlap each other when retracted inside the housing 1, and in the working state, after the first blade 21 and the second blade 22 extend out of the housing 1, they can rotate relative to each other around the hinge axis to open or close, thereby realizing the cutting action. This arrangement makes the space occupied by the first blade 21 and the second blade 22 inside the housing 1 smaller, which helps to reduce the volume of the housing 1 and facilitates storage.
[0049] In some embodiments, the scissor assembly 2 further includes an elastic element (not shown) connected between the first blade 21 and the second blade 22. The elastic element always has an elastic tendency to keep the first blade 21 and the second blade 22 away from each other. When the scissor assembly 2 is in the retracted state, the inner wall of the housing 1 can press against the outer walls of the first blade 21 and the second blade 22 to compress the elastic element. When the scissor assembly 2 is in the working state, the first blade 21 and the second blade 22 can open to a preset angle under the elastic force of the elastic element.
[0050] With this design, the first blade 21 and the second blade 22 can automatically open to a preset angle under the action of elastic force after extending out of the housing 1, without the need for the user to manually pry them open, thus shortening the switching time from storage to use and improving the ease of operation. At the same time, in the storage state, the elastic element stores energy by pressing against the inner wall of the housing 1, eliminating the need for an additional locking structure and simplifying the overall design.
[0051] Optionally, the preset angle can be set to 30°~60°. Suitable for most everyday editing scenarios.
[0052] Optionally, the elastic element may include, but is not limited to, a torsion spring.
[0053] like Figures 1-3 As shown, in some embodiments, the scissor assembly 2 further includes a first pusher 23 connected to the first blade 21 or the second blade 22. The housing 1 is provided with a first elongated hole 13. The first pusher 23 is configured to partially extend out of the first elongated hole 13 and can reciprocate along the length direction of the first elongated hole 13 to drive the first blade 21 and the second blade 22 to extend out of or retract into the housing 1.
[0054] By setting up a mating structure between the first pusher 23 and the first elongated hole 13, the user can directly push the first pusher 23 to move along the first elongated hole 13, conveniently controlling the extension and retraction of the first blade 21 and the second blade 22 relative to the housing 1. The operation is intuitive and effortless. At the same time, the first elongated hole 13 can provide guidance and constraint to the movement path of the first pusher 23, ensuring that the extension and retraction process of the scissor assembly 2 is stable and smooth, and avoiding deviation.
[0055] Optionally, the first pusher 23 is configured as a ring structure. This not only makes it easy for the user to hold, but also allows for suspension, facilitating the storage of the multi-functional knife.
[0056] like Figures 1-3 As shown, in some embodiments, the housing 1 has a second elongated hole 14, and the utility knife assembly 3 also includes a second pusher 32. The second pusher 32 is connected to the third blade 31 and can be engaged in the second elongated hole 14. The second pusher 32 can reciprocate along the length direction of the second elongated hole 14 to drive the third blade 31 to extend or retract from the housing 1.
[0057] With this setup, the user can control the third blade 31 to extend or retract from the housing 1 by directly sliding the second pusher 32. The second elongated hole 14 can also provide precise guidance for the movement trajectory of the second pusher 32, preventing the third blade 31 from deviating during movement.
[0058] like Figure 1 and Figure 2As shown, in some embodiments, a first elongated hole 13 is disposed on the side wall 15 of the housing 1, and a second elongated hole 14 is disposed on the main wall 16 of the housing 1, with the main wall 16 adjacent to the side wall 15.
[0059] By placing the first elongated hole 13 and the second elongated hole 14 on different but adjacent wall surfaces, users can quickly find the corresponding operating parts by using different hand postures when switching between the scissor assembly 2 and the utility knife assembly 3, thus avoiding accidental operation caused by the concentration of holes.
[0060] like Figure 1 and Figure 2 As shown, in some embodiments, a groove 5 is provided at the sidewall 15. The extending direction of the groove 5 is consistent with the length direction of the first elongated hole 13. The first elongated hole 13 is formed at the bottom wall 51 of the groove 5. The first pushing member 23 can be stopped at the groove sidewalls 52 at opposite ends of the groove 5 along its own length direction. With this arrangement, the two groove sidewalls 52 can further limit the movement of the first pushing member 23, preventing the first pushing member 23 from exceeding its travel range, thereby preventing the first blade 21 and the second blade 22 from extending excessively or retracting incompletely.
[0061] like Figures 1-3 As shown, in some embodiments, the multi-functional cutting tool further includes a locking structure 4, which includes a button 41 and a slot 42. The button 41 is disposed through the shell wall of the housing 1, and the slot 42 is disposed on the first blade 21 with the slot opening facing the button 41. The button 41 has an unlocked position and a locked position. When the button 41 is in the unlocked position, the button 41 and the slot 42 are separated from each other. When the button 41 is in the locked position, the button 41 is engaged inside the slot 42 and the first blade 21 is fixed in the current position.
[0062] When the first blade 21 and the second blade 22 extend from the first opening 11 to a preset length, the slot 42 aligns with the button 41. At this point, pressing the button 41 engages with the slot 42, securing the scissor assembly 2 stably in the working position. This prevents the first blade 21 and the second blade 22 from accidentally retracting due to external force or accidental contact during cutting, ensuring the safety and stability of the cutting operation. When it is time to retract the scissor assembly 2, pressing the button 41 again disengages it from the slot 42, releasing the lock, and the first blade 21 and the second blade 22 can retract into the housing 1. The operation is simple and efficient, improving the safety and convenience of using the multi-functional knife.
[0063] The slot 42 can also be located on the second blade 22, as long as the slot 42 and the button 41 can be matched accordingly.
[0064] In some embodiments, the third blade 31 is provided with pre-formed fracture grooves at intervals along its length. The pre-formed fracture grooves are configured to allow the third blade 31 to be broken into segments along its own length. The pre-formed fracture grooves facilitate the user in breaking the shield-like segments of the third blade 31, ensuring the cutting effect.
[0065] Alternatively, a break ridge is provided at the second opening 12, and the prefabricated fracture groove can be aligned with and abut against the break ridge.
[0066] When the third blade 31 extends from the second opening 12 to a preset length, the pre-made fracture groove can align with and abut against the breakage edge. By applying a bending force to the extended portion of the third blade 31, the third blade 31 can break off the segment to be separated along the pre-made fracture groove. In this way, there is no need to open a special breakage opening on the housing 1, which simplifies the overall structure of the housing 1 and improves the ease of use.
[0067] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A multi-functional cutting tool, characterized in that, include: The housing (1) has a first opening (11) and a second opening (12) at its opposite ends. The scissor assembly (2) includes a first blade (21) and a second blade (22) hinged together. The first blade (21) and the second blade (22) can extend out of the housing (1) through the first opening (11) to enter the working state, or retract into the housing (1) through the first opening (11) to enter the storage state. The utility knife assembly (3) includes a third blade (31) which can extend out of the housing (1) through the second opening (12) to enter the working state, or retract into the housing (1) through the second opening (12) to enter the storage state.
2. The multi-functional cutting tool according to claim 1, characterized in that, The scissor assembly (2) further includes a first pusher (23), which is connected to the first blade (21) or the second blade (22). The housing (1) is provided with a first elongated hole (13). The first pusher (23) is configured to partially extend out of the first elongated hole (13) and is capable of reciprocating along the length direction of the first elongated hole (13) to drive the first blade (21) and the second blade (22) to extend or retract from the housing (1).
3. The multi-functional cutting tool according to claim 2, characterized in that, The first pusher (23) is configured as a ring structure.
4. The multi-functional cutting tool according to claim 2, characterized in that, The housing (1) has a second elongated hole (14), and the utility knife assembly (3) also includes a second pusher (32). The second pusher (32) is connected to the third blade (31) and can be engaged in the second elongated hole (14). The second pusher (32) can reciprocate along the length of the second elongated hole (14) to drive the third blade (31) to extend or retract from the housing (1).
5. The multi-functional cutting tool according to claim 4, characterized in that, The first elongated hole (13) is disposed on the side wall (15) of the housing (1), and the second elongated hole (14) is disposed on the main wall (16) of the housing (1), the main wall (16) being adjacent to the side wall (15).
6. The multi-functional cutting tool according to claim 5, characterized in that, A groove (5) is provided on the side wall (15). The extension direction of the groove (5) is consistent with the length direction of the first elongated hole (13). The first elongated hole (13) is opened on the bottom wall (51) of the groove (5). The first pusher (23) can stop on the groove side walls (52) at both ends of the groove (5) along its own length direction.
7. The multi-functional cutting tool according to any one of claims 1 to 6, characterized in that, The multi-functional cutting tool also includes a locking structure (4), which includes a button (41) and a slot (42). The button (41) is inserted through the shell wall of the housing (1). The slot (42) is disposed on the first blade (21) and the opening of the slot (42) faces the button (41). The button (41) has an unlock position and a lock position. When the button (41) is in the unlock position, the button (41) is separated from the slot (42). When the button (41) is in the lock position, the button (41) is engaged inside the slot (42) and the first blade (21) is fixed in the current position.
8. The multi-functional cutting tool according to any one of claims 1 to 6, characterized in that, When the scissor assembly (2) is in the retracted state, the first blade (21) and the second blade (22) inside the housing (1) overlap each other; the scissor assembly (2) also includes an elastic element connected between the first blade (21) and the second blade (22), and the elastic element always has an elastic tendency to make the first blade (21) and the second blade (22) move away from each other; when the scissor assembly (2) is in the retracted state, the inner wall of the housing (1) can press against the outer wall of the first blade (21) and the second blade (22) to compress the elastic element; when the scissor assembly (2) is in the working state, the first blade (21) and the second blade (22) can open to a preset angle under the elastic force of the elastic element.
9. The multi-functional cutting tool according to any one of claims 1 to 6, characterized in that, The third blade (31) is provided with pre-made fracture grooves at intervals along its own length direction. The pre-made fracture grooves are configured to allow the third blade (31) to break along its own segments.
10. The multi-functional cutting tool according to claim 9, characterized in that, A break ridge is provided at the second opening (12), and the prefabricated fracture groove can be aligned with and abut against the break ridge.