Blade mounting seat and cutter

Abstract

The utility model belongs to the technical field of cutter structures, and discloses a blade mounting seat and a cutter. The blade mounting seat comprises a tool apron, a locking shifting piece, an elastic piece and an adjusting piece, a blade can be inserted into the tool apron and connected to a tool handle, the tool handle and the tool apron can cooperatively accommodate the blade to prevent a cutting edge from being exposed, the locking shifting piece can slide and be inserted into a locking groove of the blade to limit the blade, the elastic piece can apply elastic force to the locking shifting piece, and the adjusting piece can adjust the blade. And the adjusting piece is used for exerting external force resisting the elastic force, so that the locking shifting piece has the trend of moving in the direction of entering the locking groove. According to the blade mounting seat, the blade can be mounted in a limiting manner, and the blade can be quickly replaced and the position of the blade can be quickly adjusted, so that a user can conveniently replace the blade and adjust the position of the blade, a sharp cutting edge is adopted for cutting operation, and the convenience of a cutter is improved. And meanwhile, the knife handle and the knife holder can cooperate to store the blade, so that the knife is convenient to carry, and the safety of the knife during carrying is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool structure technology, and in particular to a blade mounting base and a cutting tool. Background Technology

[0002] Currently, the mainstream paper cutting tools include utility knives, folding knives, and scissors. Among them, utility knives have replaceable blades and have a long service life; folding knives do not have the function of replacing blades, and once the blade is damaged, it is difficult to repair, but they have the function of storing the blade, making them more portable and safer; scissors, on the other hand, have sharp protrusions, are not easy to carry, and can easily pose a safety risk to users.

[0003] Based on the above, there is an urgent need for a blade mounting base and a cutting tool to solve the aforementioned technical problems. Utility Model Content

[0004] The first objective of this invention is to provide a blade mounting base that allows paper cutting blades to be interchangeably mounted on the handle and accommodated within the handle to improve portability and safety.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Blade mount, including:

[0007] The blade holder has a first receiving cavity inside. Along the length direction of the blade holder, one end of the blade holder is provided with a first opening. The blade can enter and exit the first receiving cavity through the first opening. The blade holder can be connected to the blade handle. The blade handle and the blade holder can work together to store the blade to prevent the cutting edge from being exposed.

[0008] A locking paddle is disposed in the first receiving cavity along the width direction of the blade holder. The blade is provided with a locking groove. The locking paddle can slide and be inserted into the locking groove to limit the blade along the length direction of the blade holder. The locking paddle can also slide out of the locking groove to allow the blade to move along the length direction of the blade holder.

[0009] An elastic element is disposed within the first receiving cavity and is capable of applying an elastic force to the locking paddle, so that the locking paddle tends to move in the direction of entering the locking groove;

[0010] An adjusting member is movably mounted on the tool holder, is throttle-connected to the locking lever and exposed on the tool holder, and is used to apply an external force to counteract the elastic force.

[0011] Preferably, the tool holder includes a base and a cover. Along the thickness direction of the tool holder, the cover is capable of abutting against and being fixedly connected to the base. The cover and the base define the first receiving cavity.

[0012] Along the thickness direction of the tool holder, the base body is provided with a second opening, the adjusting member passes through the second opening, and is connected to the locking paddle in a transmission manner.

[0013] Preferably, the locking paddle has a locking portion and a transmission portion. The locking portion is connected to the transmission portion and protrudes towards the blade along the thickness direction of the blade holder. The locking portion can slide into and out of the locking groove. The transmission portion is used for transmission connection with the adjusting member.

[0014] The inner wall of the first receiving cavity is provided with a first groove, and the transmission part is slidably limited and positioned within the first groove.

[0015] Preferably, the second opening is an oblong opening, and its length direction is parallel to the length direction of the tool holder. The adjusting member passes through the second opening and slides along its length direction.

[0016] The locking lever is provided with a third opening, one end of the adjusting member is inserted into the third opening, and the third opening has an inclined inner wall. The inclined inner wall can abut against the adjusting member along the width direction of the blade holder, so that when the adjusting member slides in a direction close to the first opening, the locking part moves in a direction away from the locking groove.

[0017] Preferably, the inner wall of the first receiving cavity is further provided with a second groove, the second groove being used to limit and receive the elastic element, the elastic element including at least one of a sheet and a spring.

[0018] Preferably, the cover is provided with a fifth groove along the thickness direction of the tool holder, the locking part passes through the fifth groove, and is slidably disposed in the fifth groove along the width direction of the tool holder.

[0019] Preferably, along the thickness direction of the tool holder, the diameters at both ends of the adjusting member are larger than the diameter at the middle of the adjusting member, so as to confine the base body between the two ends of the adjusting member.

[0020] Preferably, the inner wall of the first receiving cavity is further provided with at least one third groove, the length direction of the third groove is parallel to the length direction of the tool holder, and the third groove communicates with the first opening.

[0021] Preferably, the blade has at least two of the locking grooves.

[0022] The beneficial effects of this blade mounting bracket are that it can limit the installation of the blade and allow for quick blade replacement and position adjustment, enabling users to easily change blades and adjust their positions, ensuring a sharp cutting edge for cutting operations and improving the convenience of the cutting tool. Simultaneously, the handle and holder can work together to store the blade, facilitating tool carrying and enhancing safety during transport.

[0023] The second objective of this utility model is to provide a knife that can replace paper cutter blades and is highly fun, portable, and safe.

[0024] To achieve this objective, the present invention adopts the following technical solution:

[0025] A cutting tool includes a blade, a handle, and the aforementioned blade mounting base. The blade is replaceably mounted on the blade mounting base. The handle has a second receiving cavity. The blade mounting base is rotatably connected to the handle. The second receiving cavity is used to accommodate the blade mounting base. The handle and the handle can cooperate to house the blade to prevent the cutting edge from being exposed.

[0026] The beneficial effects of this utility model's knife are that it can limit the installation of the blade and allow for quick blade replacement and position adjustment, enabling users to easily change the blade and adjust its position. This allows for sharp cutting operations and improves the knife's convenience. Simultaneously, the handle and blade holder work together to store the blade, facilitating knife carrying and enhancing safety during transport. Attached Figure Description

[0027] Figure 1 This is a front view of the assembly of the blade mounting base and the blade provided by this utility model;

[0028] Figure 2 This is an assembled rear view of the blade mounting base and blade provided by this utility model;

[0029] Figure 3 This is a rear view of the first internal structure of the blade mounting base and blade provided by this utility model after assembly;

[0030] Figure 4 This is a rear view of the first internal structure of the blade mounting base provided by this utility model after assembly;

[0031] Figure 5 This is a rear view of the second internal structure of the blade mounting base provided by this utility model after assembly;

[0032] Figure 6 This is a rear view of the second internal structure of the blade mounting base and the blade provided by this utility model after assembly;

[0033] Figure 7 This is an exploded view of the blade mounting base and blade provided by this utility model;

[0034] Figure 8 This is a three-dimensional view of the internal structure assembly of the blade mounting base provided by this utility model;

[0035] Figure 9 This is a first three-dimensional structural diagram of the base provided by this utility model;

[0036] Figure 10 This is a second perspective structural diagram of the base provided by this utility model;

[0037] Figure 11 This is a three-dimensional structural diagram of the cover provided by this utility model;

[0038] Figure 12 This is a three-dimensional structural diagram of the cutting tool provided by this utility model.

[0039] In the picture:

[0040] 11. Tool holder; 1101. Abutment surface; 111. Seat body; 11101. First groove; 11102. Second groove; 11103. Third groove; 11104. Fourth groove; 1111. Snap fastener; 1112. Threaded hole; 1113. Handle structure; 112. Cover body; 11201. Fifth groove; 1121. Snap groove; 1122. Through hole; 113. Threaded connector;

[0041] 12. Locking lever; 121. Locking part; 122. Transmission part; 12201. Inclined inner wall; 13. Elastic element; 14. Adjusting element; 141. Internal part; 142. External part;

[0042] 2. Blade; 21. Locking groove;

[0043] 3. Tool holder; 301. Second receiving cavity. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] 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.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0048] The following is based on the appendix Figure 1 To be continued Figure 12 This invention introduces the blade mounting base and the cutting tool provided by this utility model.

[0049] like Figures 1 to 4 As shown, in this embodiment, the blade mounting base mainly consists of a blade holder 11, a locking lever 12, an elastic element 13, and an adjusting element 14. The blade holder 11 has a first receiving cavity, and along the length direction of the blade holder 11 (i.e., the direction shown by the X-axis in the figure), one end of the blade holder 11 has a first opening. The first opening and the first receiving cavity are connected, allowing the paper cutting blade 2 (hereinafter referred to as blade 2) to enter and exit the first receiving cavity through the first opening. A portion of the inner wall of the first receiving cavity can abut against the blade 2, thereby holding the blade 2 along the width direction (i.e., the direction shown by the Z-axis in the figure) and the thickness direction (the thickness direction is perpendicular to both the length and width directions, i.e.,...) of the blade holder 11. Figure 7The blade 2 is limited in the direction indicated by the Y-axis, allowing it to move relative to the blade holder 11 along its length. This means it can enter and exit the blade holder 11, and the depth of the blade 2's insertion into the first receiving cavity can be adjusted, enabling blade 2 replacement and position adjustment. The blade holder 11 can be connected to the handle 3, facilitating user gripping and cutting. The handle 3 has a second receiving cavity 301, capable of accommodating at least a portion of the blade mounting base, improving the overall portability of the tool. Simultaneously, the handle 3 and the blade holder 11 work together to house the blade 2, reducing its size for easy carrying and preventing the cutting edge from being exposed, thus enhancing safety.

[0050] A locking lever 12 is disposed within the first receiving cavity and is slidably disposed along the width direction of the blade holder 11. The blade 2 is provided with at least one locking groove 21, and the locking lever 12 can slide and insert into the locking groove 21, thereby limiting the blade 2 along the length direction of the blade holder 11 and preventing movement of the blade 2 during cutting. Simultaneously, the locking lever 12 can also slide out of the locking groove 21, allowing the blade 2 to move along the length direction of the blade holder 11, thus enabling the replacement and position adjustment of the blade 2.

[0051] The elastic element 13 is disposed within the first receiving cavity and can apply an elastic force to the locking lever 12, causing the locking lever 12 to tend to move in the direction of entering the locking groove 21. This achieves the effect of maintaining the locking lever 12 and the locking groove 21 in a limited insertion position, preventing the blade 2 from moving during the cutting operation. The adjusting element 14 is movably mounted on the blade holder 11, is drivenly connected to the locking lever 12 and exposed outside the blade holder 11, allowing the user to apply external force through the adjusting element 14 to counteract the elastic force acting on the locking lever 12.

[0052] When using this blade mounting bracket, taking the replacement of blade 2 as an example, the user can first apply external force to the adjusting member 14, so that the locking lever 12 is not inserted into the locking groove 21 (e.g., Figure 3 , Figure 4 As shown), it transitions to a state where it is disengaged from the locking slot 21 (as shown). Figure 5 , Figure 6(As shown). At this time, the blade 2 changes from a state limited along the length of the blade holder 11 to a state that can move along the length of the blade holder 11. The user can then pull out the old blade 2 from the first opening and insert the new blade 2 from the first opening. When the new blade 2 is inserted into place, the user stops applying external force to the adjusting member 14. The elastic force of the elastic member 13 will cause the locking lever 12 to move towards the blade 2, so that the locking lever 12 changes from a state of being disengaged from the locking groove 21 to a state of being inserted into the locking groove 21, thereby limiting the blade 2 along the length of the blade holder 11. At this time, the new blade 2 can be stably fixedly connected to the blade holder 11 to complete various cutting tasks. When the exposed end of the new blade 2 becomes worn, the blade 2 can be moved away from the first receiving cavity in a similar manner and re-fixed to the blade holder 11, making it convenient for the user to use the unworn cutting edge of the blade 2.

[0053] The aforementioned blade mounting bracket allows for the precise installation and quick replacement and adjustment of the blade 2, enabling users to easily change and adjust its position, ensuring a sharp cutting edge and enhancing the tool's usability. Simultaneously, the handle 3 and the blade holder 11 work together to store the blade 2, facilitating tool carrying and improving safety during transport.

[0054] Preferably, in this embodiment, the blade 2 is provided with two locking grooves 21, and the blade 2 has a mirror-symmetrical structure. Thus, after the cutting edge at one end of the blade 2 wears down, by disassembling the blade 2 and changing its installation direction, the unworn cutting edge at the other end of the blade 2 can be positioned outside the blade mounting seat, while the worn cutting edge is positioned inside the blade mounting seat, achieving efficient utilization of the blade 2. More preferably, the inner wall of the first receiving cavity is provided with an abutment surface 1101, which can abut against the end of the blade 2 that extends into the first receiving cavity, thereby further limiting the blade 2 along the length direction of the blade holder 11 and improving the stability of the blade 2 during cutting.

[0055] Of course, in some embodiments, more locking slots 21 can be provided on the blade 2, making the length of the blade 2 extending out of the first opening adjustable. This allows users to use different blade lengths as needed. For example, when carrying the blade, it can be completely housed in the first receiving cavity, and when cutting, it can be adjusted so that the blade extends out of the first opening. Therefore, when carrying the blade, the blade 2 can be completely housed in the blade mounting base or partially exposed in the blade mounting base and housed in the handle 3. These are all effects that can be achieved through coordinated storage and are within the scope of protection of this utility model.

[0056] Optionally, such as Figure 5 , Figure 8As shown, in this embodiment, the elastic element 13 is a spring sheet, and the inner wall of the first receiving cavity is also provided with a second groove 11102. The second groove 11102 is used to limit and receive the spring sheet, and the spring sheet can abut against the inner wall of the second groove 11102 and the locking tab 12 to apply the aforementioned elastic force. Of course, in some other embodiments, other elastic elements 13 such as springs can also be used, and this utility model does not specifically limit them.

[0057] like Figure 7 , Figure 8 As shown, in this embodiment, the tool holder 11 includes a base body 111 and a cover body 112. Along the thickness direction of the tool holder 11, the cover body 112 can abut against the base body 111 and be fixedly connected to the base body 111. The side of the base body 111 facing the cover body 112 is provided with a receiving groove. When the cover body 112 and the base body 111 abut against each other, the first receiving cavity described above can be defined between the cover body 112 and the base body 111. Optionally, in this embodiment, along the width direction of the tool holder 11, one end of the base body 111 is provided with a buckle 1111 and the other end is provided with a threaded hole 1112. One end of the cover body 112 is provided with a slot 1121 and the other end is provided with a through hole 1122, so that one end of the cover body 112 and the base body 111 are connected by the buckle 1111, and the other end is threadedly connected by the threaded connector 113, thereby improving the connection strength between the two and facilitating the connection and separation between the cover body 112 and the base body 111.

[0058] like Figure 7 , Figure 8 As shown, a second opening is provided through the base 111 along the thickness direction of the tool holder 11. The adjusting member 14 passes through the second opening and is pulsatorically connected to the locking lever 12. The locking lever 12 has a locking part 121 and a driving part 122. The driving part 122 has a sheet-like structure. The locking part 121 is connected to the driving part 122 and protrudes towards the blade 2 along the thickness direction of the tool holder 11. The driving part 122 and the adjusting member 14 are pulsatorically connected and can move within the first receiving cavity along the width direction of the tool holder 11, thereby allowing the locking part 121 to enter and disengage from the locking groove 21. Preferably, the width of the locking groove 21 is 3.5 mm, and the corresponding width of the locking part 121 is 3.2 mm, to facilitate the entry and disengagement of the locking part 121 from the locking groove 21.

[0059] In this embodiment, the inner wall of the first receiving cavity is provided with a first groove 11101, the transmission part 122 is slidably disposed in the first groove 11101, and the inner wall of the first groove 11101 can slide against the transmission part 122, thereby restricting the transmission part 122 from sliding along the width direction of the tool holder 11.

[0060] like Figure 8 , Figure 9As shown, in this embodiment, the inner wall of the first receiving cavity is further provided with at least one third groove 11103. The length direction of the third groove 11103 is parallel to the length direction of the tool holder 11, and the third groove 11103 communicates with the first opening. The third groove 11103 can reduce weight and facilitate the entry and exit of air into and out of the first receiving cavity. Especially when the blade 2 is coated with anti-rust oil (at this time, the fit tolerance between the blade 2 and the first receiving cavity is 0.05mm along the thickness direction of the tool holder 11), it can reduce the adsorption force between the blade 2 and the inner wall of the first receiving cavity, making it easier to replace the blade 2.

[0061] like Figure 7 , Figure 9 , Figure 10 As shown, the second opening is a waist-shaped opening, and its length direction is parallel to the length direction of the tool holder 11. The adjusting member 14 passes through the second opening and slides along its length direction. The locking lever 12 has a third opening, one end of the adjusting member 14 is inserted into the third opening, and the third opening has an inclined inner wall 12201, which can abut against the adjusting member 14 along the width direction of the tool holder 11. When the adjusting member 14 slides in a direction close to the first opening, the locking part 121 can move in a direction away from the locking groove 21, thereby unlocking the blade 2. This connection method makes adjustment easier and further improves the portability of the tool.

[0062] Optionally, such as Figure 7 , Figure 10 As shown, along the thickness direction of the tool holder 11, the diameters at both ends of the adjusting member 14 are larger than the diameter at the middle of the adjusting member 14, so as to confine the base body 111 between the two ends of the adjusting member 14, avoiding the situation where the adjusting member 14 and the tool holder 11 are easily separated. Specifically, the adjusting member 14 includes an inner member 141 and an outer member 142. The inner member 141 has a protruding connecting shaft, which can pass through the third opening and be connected to the outer member 142, so that the diameters at both ends of the adjusting member 14 are larger than the diameter at the middle of the adjusting member 14, and the situation where the adjusting member 14 cannot be installed is not caused. Preferably, the base body 111 is also provided with a fourth groove 11104. The length direction of the fourth groove 11104 is arranged along the length direction of the tool holder 11, which can be used to accommodate the outer member 142, preventing the outer member 142 from protruding from the base body 111 and affecting the storage of the blade mounting seat.

[0063] Reference Figure 11As shown, in this embodiment, a fifth groove 11201 is provided on the cover 112 along the thickness direction of the blade holder 11. The locking part 121 passes through the fifth groove 11201 and is slidably disposed within the fifth groove 11201 along the width direction of the blade holder 11. The fifth groove 11201 allows the user to easily observe the position of the locking part 121, thereby determining whether the blade 2 is in a limited locking state when the adjusting member 14 malfunctions or the connection between the adjusting member 14 and the locking lever 12 fails. Preferably, the fifth groove 11201 is through-hole, allowing the user to use a tool to pass through the fifth groove 11201 from the outside of the blade holder 11 and adjust the position of the locking lever 12, facilitating maintenance.

[0064] This utility model also provides a cutting tool, such as Figure 12 As shown, the tool includes a blade 2, a handle 3, and the aforementioned blade mounting base. The blade 2 is replaceably mounted on the blade mounting base. The handle 3 has a second receiving cavity 301. The blade mounting base is rotatably connected to the handle 3. The second receiving cavity 301 is used to receive the blade mounting base. The handle 3 and the handle 11 can work together to receive the blade 2 to prevent the cutting edge from being exposed.

[0065] Preferably, a lever structure 1113 is provided at one end of the blade mounting base connected to the handle 3. The user can turn the lever structure 1113 to achieve a quick-opening effect, quickly rotating the blade mounting base out of the second receiving cavity 301, which makes it more convenient to use and carry the knife.

[0066] This knife features a secure mounting mechanism for the blade 2, allowing for quick replacement and position adjustment. This enables users to easily change and adjust the blade 2, ensuring a sharp cutting edge and enhancing the knife's usability. Furthermore, the handle 3 and the blade holder 11 work together to store the blade 2, facilitating carrying and improving safety during transport.

[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 various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments 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 blade mounting base, characterized in that, include: The blade holder (11) has a first receiving cavity. Along the length direction of the blade holder (11), one end of the blade holder (11) is provided with a first opening. The blade (2) can enter and exit the first receiving cavity through the first opening. The blade holder (11) can be connected to the handle (3). The handle (3) and the blade holder (11) can work together to house the blade (2) to prevent the cutting edge from being exposed. A locking paddle (12) is disposed in the first receiving cavity along the width direction of the blade holder (11). A locking groove (21) is provided on the blade (2). The locking paddle (12) can slide and be inserted into the locking groove (21) to limit the blade (2) along the length direction of the blade holder (11). The locking paddle (12) can slide out of the locking groove (21) so that the blade (2) can move along the length direction of the blade holder (11). An elastic element (13) is disposed in the first receiving cavity and is capable of applying an elastic force to the locking paddle (12) so that the locking paddle (12) has a tendency to move in the direction of entering the locking groove (21); Adjusting member (14) is movably mounted on the tool holder (11), the adjusting member (14) is tractively connected to the locking paddle (12) and exposed on the tool holder (11), the adjusting member (14) is used to apply an external force against the elastic force.

2. The blade mounting bracket according to claim 1, characterized in that, The tool holder (11) includes a base (111) and a cover (112). Along the thickness direction of the tool holder (11), the cover (112) is capable of abutting against the base (111) and is fixedly connected to the base (111). The cover (112) and the base (111) define the first receiving cavity. Along the thickness direction of the blade holder (11), the base body (111) is provided with a second opening, the adjusting member (14) passes through the second opening and is connected to the locking paddle (12) in a transmission manner.

3. The blade mounting bracket according to claim 2, characterized in that, The locking lever (12) has a locking part (121) and a transmission part (122). The locking part (121) is connected to the transmission part (122) and protrudes towards the blade (2) along the thickness direction of the blade holder (11). The locking part (121) can slide into and out of the locking groove (21). The transmission part (122) is used for transmission connection with the adjusting member (14). The inner wall of the first receiving cavity is provided with a first groove (11101), and the transmission part (122) is slidably limited and disposed in the first groove (11101).

4. The blade mounting bracket according to claim 3, characterized in that, The second opening is an oblong opening, and its length direction is parallel to the length direction of the tool holder (11). The adjusting member (14) passes through the second opening and slides along its length direction. The locking lever (12) is provided with a third opening, one end of the adjusting member (14) is inserted into the third opening, and the third opening has an inclined inner wall (12201). The inclined inner wall (12201) can abut against the adjusting member (14) along the width direction of the blade holder (11), so that when the adjusting member (14) slides in a direction close to the first opening, the locking part (121) moves in a direction away from the locking groove (21).

5. The blade mounting bracket according to claim 4, characterized in that, The inner wall of the first receiving cavity is also provided with a second groove (11102), which is used to limit the receiving of the elastic member (13), and the elastic member (13) includes at least one of a sheet and a spring.

6. The blade mounting bracket according to claim 4, characterized in that, Along the thickness direction of the blade holder (11), the cover (112) is provided with a fifth groove (11201), the locking part (121) passes through the fifth groove (11201) and is slidably disposed in the fifth groove (11201) along the width direction of the blade holder (11).

7. The blade mounting bracket according to claim 4, characterized in that, Along the thickness direction of the tool holder (11), the diameters at both ends of the adjusting member (14) are larger than the diameter at the middle part of the adjusting member (14) so ​​as to limit the seat (111) between the two ends of the adjusting member (14).

8. The blade mounting bracket according to claim 1, characterized in that, The inner wall of the first receiving cavity is also provided with at least one third groove (11103), the length direction of the third groove (11103) is parallel to the length direction of the tool holder (11), and the third groove (11103) is connected to the first opening.

9. The blade mounting bracket according to claim 1, characterized in that, The blade (2) has at least two of the locking grooves (21).

10. A cutting tool, characterized in that, The tool includes a blade (2), a handle (3), and a blade mounting base as claimed in any one of claims 1-9. The blade (2) is replaceably mounted on the blade mounting base. The handle (3) has a second receiving cavity (301). The blade mounting base is rotatably connected to the handle (3). The second receiving cavity (301) is used to receive the blade mounting base. The handle (3) and the handle (11) are able to cooperate in receiving the blade (2) to avoid the cutting edge being exposed.

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