Folding knife

Abstract

The utility model provides a folding knife, which comprises a knife handle, a knife handle and a knife cover, the blade is provided with a tool bit, a cutting edge and a tool nose, the tool bit is pivoted with the tool handle, the blade is provided with a tool closing station at least enabling the cutting edge and the tool nose to be contained in the containing cavity, the blade is further provided with an opening station at least enabling the cutting edge and the tool nose to be exposed out of the tool handle and enabling the blade to be used for cutting, and the blade rotates to be switched between the tool closing station and the opening station; the tool bit is provided with a locking hole; the locking column is arranged on the knife handle, the locking column is provided with a locking part, the locking part is located in the containing cavity, the locking part is provided with a locking station matched with the locking hole so that the blade can be limited to the knife closing station, and the locking part is further provided with an unlocking station matched with the locking hole in a disengaged mode so that the blade can be switched to the opening station; the locking part rotates along with the blade and is switched between the locking station and the unlocking station, and the cross section of the locking part is gradually reduced in the direction close to the containing cavity. The unlocking force can be adjusted, and use is more flexible and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of knife tools, and in particular to a folding knife. Background Art

[0002] As a portable knife, a folding knife's greatest strength is its compact size, making it ideal for everyday use. In daily life and outdoor activities, folding knives are used for tasks like opening boxes, cutting ropes, and trimming small branches, making them a must-have for many people. For example, in wilderness survival, a folding knife is an essential tool, useful for cutting food, chopping wood, and making simple tools, providing convenience in the wild.

[0003] Currently, folding knives on the market generally lock the blade in the closed state by cooperating with a glass bead and a locking hole on the blade. However, since the glass bead has a spherical structure, the unlocking force cannot be adjusted according to actual needs. Utility Model Content

[0004] The present invention provides a folding knife to solve the problems existing in the related art. The technical solution is as follows:

[0005] The present application provides a folding knife, comprising:

[0006] A knife handle, wherein the knife handle has a receiving cavity;

[0007] a blade, the blade comprising a blade head, a cutting edge, and a blade tip, the blade head being pivotally connected to the blade handle, the blade having a closing position for at least accommodating the cutting edge and the blade tip in the accommodating cavity, and an opening position for exposing at least the cutting edge and the blade tip from the blade handle and enabling the blade to be used for cutting, the blade being rotated to switch between the closing position and the opening position, the blade head having a locking hole;

[0008] A locking column, wherein the locking column is arranged on the knife handle, and the locking column is provided with a locking portion, and the locking portion is located in the accommodating cavity. The locking portion has a locking position that cooperates with the locking hole to limit the blade to the knife closing position. The locking portion also has an unlocking position that disengages from the locking hole to enable the blade to switch to the opening position. The locking portion switches between the locking position and the unlocking position as the blade rotates, and the cross-section of the locking portion gradually decreases toward the accommodating cavity.

[0009] In one embodiment, the folding knife further comprises:

[0010] An anti-wear lining is provided on the shank, the anti-wear lining is located on a side wall of the accommodating cavity, and the locking column is provided on the anti-wear lining.

[0011] In one embodiment, the anti-wear lining includes a first extension section and a second extension section, the first extension section and the second extension section are spaced apart from each other along the anti-wear lining from top to bottom, the first extension section is connected to the tool handle, a first end of the second extension section in the longitudinal direction is connected to the first extension section, and a second end of the second extension section in the longitudinal direction is suspended so that the second end of the second extension section in the longitudinal direction can move relative to the first extension section;

[0012] The locking post is arranged on the second end of the second extension section in the longitudinal direction.

[0013] In one embodiment, the second end of the second extension section in the longitudinal direction has a connecting hole;

[0014] The locking column has a connecting portion, and the connecting portion and the locking portion are arranged in sequence along the length direction of the locking column. The outer diameter of the connecting portion is smaller than the outer diameter of the locking portion. The connecting portion cooperates with the connecting hole to connect the locking column and the anti-wear lining together. The locking portion abuts against the side wall of the second extension section to confine the connecting portion in the connecting hole.

[0015] In one embodiment, the cutter head is provided with an unlocking toggle portion, which is located on the side of the blade where the cutting edge is provided. When the blade is in the knife closing position, the unlocking toggle portion is exposed on the knife handle.

[0016] In one embodiment, the cutter head further has a first stop groove;

[0017] The folding knife also includes:

[0018] A first stop post is provided on the knife handle and is located in the accommodating cavity. The first stop post cooperates with the first stop groove to limit the blade to the knife closing position.

[0019] In one embodiment, the cutter head further has a second stop groove, and the first stop column further cooperates with the second stop groove to limit the blade to the open position.

[0020] In one embodiment, the cutter head further has a third stop groove, and the third stop groove is spaced apart from the second stop groove;

[0021] The folding knife also includes:

[0022] The second stop post is provided on the tool handle and is located in the accommodating cavity. The second stop post cooperates with the third stop groove to limit the blade to the opening position.

[0023] In one embodiment, the knife handle comprises:

[0024] a first handle body, the first handle body having a first through hole;

[0025] a second handle body, the second handle body and the first handle body are spaced apart from each other in a transverse direction of the knife handle to enclose the accommodating cavity, and the second handle body has a second through hole;

[0026] a pivot shaft, wherein a first end of the pivot shaft is inserted into the first through-hole, and a second end of the pivot shaft is inserted into the second through-hole;

[0027] a first fastener, wherein a rod portion of the first fastener is threadedly connected to a first end of the pivot shaft, and a head portion of the first fastener abuts against an outer side wall of the first handle body facing away from the second handle body;

[0028] and a second fastener, wherein the stem of the second fastener is threadedly connected to the second end of the pivot shaft, and the head of the second fastener abuts against an outer side wall of the second handle body facing away from the first handle body;

[0029] The cutter head has a pivot hole, the pivot shaft is passed through the pivot hole, and the pivot hole and the pivot shaft are rotatably matched.

[0030] In one embodiment, the first handle has a first positioning groove;

[0031] The blade has a second positioning groove on one side close to the second handle;

[0032] The folding knife also includes:

[0033] a first rolling bearing, wherein the pivot shaft is passed through a center hole of the first rolling bearing, the first rolling bearing cooperates with the first positioning groove, and the first rolling bearing is disposed between a bottom wall of the first positioning groove and the blade;

[0034] A second rolling bearing, wherein the center hole of the second rolling bearing is provided for the pivot shaft to pass through, the second rolling bearing cooperates with the second positioning groove, and the second rolling bearing is provided between the bottom wall of the second positioning groove and the second handle body.

[0035] The advantages or beneficial effects of the above technical solution include at least:

[0036] The folding knife of the utility model is based on the fact that the knife head is pivotally arranged on the knife handle so that the blade can rotate relative to the knife handle, and the knife head has a closing position in which at least the cutting edge and the knife tip are accommodated in the accommodating cavity, so that the knife can be folded and accommodated in the knife handle, which is convenient for carrying the knife, and the knife head also has an opening position in which at least the cutting edge and the knife tip are exposed from the knife handle and the knife blade can be used for cutting, so that the knife can be used normally, and the knife blade rotates to switch between the closing position and the opening position; in addition, based on the fact that the knife head has a locking hole and the knife handle is provided with a locking column, the locking column is provided with a locking part located in the accommodating cavity, and the locking part has a locking position that cooperates with the locking hole to limit the knife to the closing position, so that the knife blade can be locked in the closing position. The locking portion is provided with an unlocking position which is disengaged from the locking hole so that the blade can be switched to the opening position. The locking portion switches between the locking position and the unlocking position as the blade rotates, that is, the blade can be locked or unlocked by turning the blade, and the blade locking and unlocking operations are simple and convenient. The cross section of the locking portion gradually decreases in the direction close to the accommodating cavity, so that the locking portion has a conical structure. The taper of the locking portion of the conical structure can be adjusted according to actual needs, and the taper of the locking portion of the conical structure determines the unlocking force required for the blade, so that the unlocking force of the blade can also be adjusted, which is more flexible and convenient to use.

[0037] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0039] Figure 1 This is a schematic diagram of the three-dimensional structure of the folding knife of the present invention from a first viewing angle, wherein the blade is in the closing position;

[0040] Figure 2 is a cross-sectional view of the folding knife of the present invention at a second viewing angle;

[0041] Figure 3 for Figure 2 A local enlarged view of point A in FIG;

[0042] Figure 4 This is a cross-sectional view of the folding knife of the present invention from a third viewing angle;

[0043] Figure 5 is a cross-sectional view of the folding knife of the present invention at a fourth viewing angle;

[0044] Figure 6 This is an exploded view of the folding knife of the present invention at a fifth viewing angle;

[0045] Figure 7 is a schematic diagram of the three-dimensional structure of the folding knife of the present invention at a sixth viewing angle, wherein the blade is in the open position;

[0046] Figure 8 This is a schematic diagram of the three-dimensional structure of the folding knife of the present invention at a seventh viewing angle;

[0047] Figure 9 It is a schematic diagram of the three-dimensional structure of the anti-wear lining in the utility model.

[0048] Reference numerals

[0049] 1. Handle; 11. Accommodating cavity; 12. First handle body; 121. First positioning groove; 13. Second handle body; 14. Pivot shaft; 15. First fastener; 16. Second fastener; 17. Spacer; 18. Third fastener; 2. Blade; 21. Cutting head; 211. Locking hole; 212. Unlocking toggle portion; 213. First stop groove; 214. Second stop groove; 215. Third stop groove; 216. Second positioning groove; 22. Cutting edge; 23. Tip; 3. Locking column; 31. Locking portion; 32. Connecting portion; 4. Anti-wear lining; 41. First extension section; 42. Second extension section; 421. Connecting hole; 5. First stop column; 6. Second stop column; 7. First rolling bearing; 8. Second rolling bearing; 9. Anti-wear pad. DETAILED DESCRIPTION

[0050] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0051] See also Figures 1-9 , shows a folding knife in a preferred embodiment of the present invention, comprising:

[0052] The knife handle 1 has a receiving cavity 11;

[0053] The blade 2 includes a blade head 21, a cutting edge 22, and a blade tip 23. The blade head 21 is pivotally connected to the handle 1. The blade 2 has a closing position in which at least the cutting edge 22 and the blade tip 23 are accommodated in the accommodating cavity 11. The blade 2 also has an opening position in which at least the cutting edge 22 and the blade tip 23 are exposed from the handle 1 and the blade 2 can be used for cutting. The blade 2 rotates to switch between the closing position and the opening position. The blade head 21 has a locking hole 211.

[0054] The locking column 3 is provided on the knife handle 1. The locking column 3 is provided with a locking portion 31. The locking portion 31 is located in the accommodating cavity 11. The locking portion 31 has a locking position that cooperates with the locking hole 211 to limit the blade 2 to the closing position. The locking portion 31 also has an unlocking position that disengages from the locking hole 211 so that the blade 2 can be switched to the opening position. The locking portion 31 switches between the locking position and the unlocking position as the blade 2 rotates. The cross-section of the locking portion 31 gradually decreases toward the accommodating cavity 11.

[0055] The folding knife of the present invention is based on the fact that the cutter head 21 is pivotally mounted on the handle 1 so that the blade 2 can rotate relative to the handle 1, and the blade 2 has a closing position in which at least the cutting edge 22 and the tip 23 are accommodated in the accommodating cavity 11, so that the blade 2 can be folded and accommodated in the handle 1, which is convenient for carrying the folding knife, and the blade 2 also has an opening position in which at least the cutting edge 22 and the tip 23 are exposed from the handle 1 and the blade 2 can be used for cutting, so that the blade 2 can be used normally, and the blade 2 rotates to switch between the closing position and the opening position; in addition, based on the fact that the cutter head 21 has a locking hole 211 and the handle 1 is provided with a locking column 3, the locking column 3 is provided with a locking portion 31 located in the accommodating cavity 11, and the locking portion 31 has a locking position that cooperates with the locking hole 211 to limit the blade 2 to the closing position, so that the knife can be properly used. The blade 2 is locked in the closing position to prevent the blade 2 from escaping from the closing position at will, thereby improving the safety of use. The locking portion 31 also has an unlocking position that disengages from the locking hole 211, so that the blade 2 can be switched to the opening position. The locking portion 31 switches between the locking position and the unlocking position as the blade 2 rotates, that is, the blade 2 can be locked or unlocked by turning the blade 2, and the locking and unlocking operations of the blade 2 are simple and convenient; wherein, based on the cross-section of the locking portion 31 gradually shrinking in the direction close to the accommodating cavity 11, the locking portion 31 is a conical structure, and the taper of the locking portion 31 of the conical structure can be adjusted according to actual needs, and the taper of the locking portion 31 of the conical structure determines the unlocking force required for the blade 2, so that the unlocking force of the blade can also be adjusted, which is more flexible and convenient to use.

[0056] See also Figure 2-Figure 3 In one embodiment, the folding knife further comprises:

[0057] The anti-wear lining 4 is provided on the handle 1 and is located on a side wall of the accommodating cavity 11. The locking post 3 is provided on the anti-wear lining 4. The anti-wear lining 4 can reduce friction and cushion impact forces, thereby protecting the handle 1 and blade 2. At the same time, by providing the locking post 3 on the anti-wear lining 4, the difficulty of installing the locking post 3 can be reduced, and the locking post 3 can be quickly installed on the anti-wear lining 4.

[0058] See also Figure 9 In one embodiment, the wear-resistant lining 4 includes a first extension section 41 and a second extension section 42. The first extension section 41 and the second extension section 42 are spaced apart from each other along the wear-resistant lining 4 from top to bottom. The first extension section 41 is connected to the tool handle 1. A first end of the second extension section 42 in the longitudinal direction is connected to the first extension section 41. A second end of the second extension section 42 in the longitudinal direction is suspended so that the second end of the second extension section 42 can move relative to the first extension section 41.

[0059] The locking post 3 is provided at the second end in the longitudinal direction of the second extension section 42. Thus, when the blade 2 is unlocked, an unlocking force is applied to the blade 2 to overcome the locking force applied to the blade 2 by the locking portion 31. At the same time, the second end of the second extension section 42 moves relative to the first extension section 41, driving the locking portion 31 out of the locking hole 211. Thereafter, the second extension section 42 can be reset under the action of its own elastic force. While resetting, it can also apply a certain thrust to the blade 2, making it easier to switch the blade 2 from the closed position to the open position, reducing the difficulty of unlocking the blade 2, and thus making unlocking the blade 2 more convenient and efficient.

[0060] In one embodiment, the anti-wear lining 4 is made of a hard metal material, or may be made of a hard plastic material.

[0061] See also Figure 3 In one embodiment, the second end of the second extension section 42 in the longitudinal direction has a connecting hole 421;

[0062] The locking post 3 includes a connecting portion 32. The connecting portion 32 and the locking portion 31 are sequentially arranged along the length of the locking post 3. The outer diameter of the connecting portion 32 is smaller than that of the locking portion 31. The connecting portion 32 cooperates with the connecting hole 421 to connect the locking post 3 to the anti-wear lining 4. The locking portion 31 abuts against the side wall of the second extension section 42 to confine the connecting portion 32 within the connecting hole 421. Thus, during installation, the locking post 3 and the anti-wear lining 4 are connected by cooperating with the connecting hole 421. Simultaneously, the locking portion 31 abuts against the side wall of the second extension section 42 to secure the locking post 3 in place and ensure reliable connection between the connecting portion 32 and the connecting hole 421. This results in a simple and practical connection structure, high reliability, and low cost.

[0063] See also Figure 1 In one embodiment, the blade head 21 is provided with an unlocking toggle 212. The unlocking toggle 212 is located on the side of the blade 2 where the cutting edge 22 is located. That is, the unlocking toggle 212 and the cutting edge 22 are located on the same side of the blade 2. When the blade 2 is in the closed position, the unlocking toggle 212 is exposed from the handle 1. In this way, when unlocking the blade 2, the blade 2 can be released from the closed position by pushing the unlocking toggle 212, making the unlocking operation of the blade 2 more convenient and labor-saving.

[0064] See also Figure 6 , in one embodiment, the cutter head 21 further has a first stop groove 213;

[0065] The folding knife also includes:

[0066] The first stop post 5 is provided on the knife handle 1, and the first stop post 5 is located in the accommodating cavity 11. The first stop post 5 cooperates with the first stop groove 213 to limit the blade 2 to the knife closing position, thereby reliably locking the blade 2 at the knife closing position and improving the locking reliability of the blade 2.

[0067] See also Figure 6 and Figure 8 In one embodiment, the cutter head 21 also has a second stop groove 214, and the first stop column 5 also cooperates with the second stop groove 214 to limit the blade 2 to the open position, thereby reliably maintaining the blade 2 in the open position and ensuring that the blade 2 can be used normally.

[0068] See also Figure 6 and Figure 8 In one embodiment, the cutter head 21 further has a third stop groove 215 , and the third stop groove 215 is spaced apart from the second stop groove 214 ;

[0069] The folding knife also includes:

[0070] The second stop post 6 is provided on the shank 1, and the second stop post 6 is located in the accommodating cavity 11. The second stop post 6 cooperates with the third stop groove 215 to limit the blade 2 to the open position, so as to more reliably maintain the blade 2 in the open position and ensure that the blade 2 can be used normally.

[0071] To facilitate the installation of blade 2, see Figure 4 and Figure 5 In one embodiment, the handle 1 comprises:

[0072] A first handle body 12 having a first through hole;

[0073] A second handle body 13 is provided, the second handle body 13 and the first handle body 12 are spaced apart in the transverse direction of the handle 1 to form an accommodating cavity 11, and the second handle body 13 has a second through hole;

[0074] A pivot shaft 14, wherein a first end of the pivot shaft 14 is inserted into the first through hole, and a second end of the pivot shaft 14 is inserted into the second through hole;

[0075] A first fastener 15, wherein the stem of the first fastener 15 is threadedly connected to the first end of the pivot shaft 14, and the head of the first fastener 15 abuts against the outer side wall of the first handle body 12 facing away from the second handle body 13, thereby reliably fixing the first end of the pivot shaft 14 and the first handle body 12 together;

[0076] and a second fastener 16, the stem of the second fastener 16 being threadedly connected to the second end of the pivot shaft 14, and the head of the second fastener 16 being in contact with the outer side wall of the second handle body 13 facing away from the first handle body 12, thereby reliably fixing the second end of the pivot shaft 14 and the second handle body 13 together;

[0077] The blade 2 has a pivot hole for the pivot shaft 14 to pass through. The pivot hole and the pivot shaft 14 are rotatably matched to allow the blade 2 to rotate relative to the handle 1.

[0078] See also Figure 5 、 Figure 6 and Figure 8 In one embodiment, the handle 1 further comprises:

[0079] A spacer 17, which is sandwiched between the first handle 12 and the second handle 13 at one end away from the pivot shaft 14;

[0080] The head of the third fastener 18 abuts against the outer wall of the first handle 12, and the stem of the third fastener 18 sequentially passes through the first handle 12, the spacer 17, and the second handle 13, and is threadedly connected to the second handle 13. In this way, the spacer 17 stably maintains the first and second handles 12, 13 in a spaced-apart state, while the third fastener 18 securely secures the first and second handles 12, 13 together, thereby improving the structural stability of the knife handle 1.

[0081] In one embodiment, the first fastener 15 , the second fastener 16 , and the third fastener 18 may be any one of screws, bolts, rivets, and the like.

[0082] See also Figure 4 , in one embodiment, the first handle body 12 has a first positioning groove 121;

[0083] The blade 2 has a second positioning groove 216 on one side close to the second handle 13;

[0084] The folding knife also includes:

[0085] a first rolling bearing 7, wherein the center hole of the first rolling bearing 7 is for the pivot shaft 14 to pass through so as to avoid the pivot shaft 14, the first rolling bearing 7 is matched with the first positioning groove 121, and the first rolling bearing 7 is arranged between the bottom wall of the first positioning groove 121 and the blade 2;

[0086] The second rolling bearing 8 has a center hole for the pivot shaft 14 to pass through to avoid the pivot shaft 14 . The second rolling bearing 8 cooperates with the second positioning groove 216 . The second rolling bearing 8 is provided between the bottom wall of the second positioning groove 216 and the second handle body 13 . Among them, the setting of the first rolling bearing 7 can reduce the friction between the first handle body 12 and the blade 2, and the setting of the second rolling bearing 8 can reduce the friction between the second handle body 13 and the blade 2, so that the blade 2 rotates more smoothly, while playing a role in protecting the first handle body 12, the second handle body 13 and the blade 2, and preventing the first handle body 12, the second handle body 13 and the blade 2 from wear; in addition, based on the first handle body 12 having a first positioning groove 121, the first rolling bearing 7 cooperates with the first positioning groove 121, and can install, position and limit the first rolling bearing 7, ensuring that the first rolling bearing 7 is reliably installed in the set position. Similarly, based on the blade 2 having a second positioning groove 216, the second rolling bearing 8 cooperates with the second positioning groove 216, and can install, position and limit the second rolling bearing 8, ensuring that the second rolling bearing 8 is reliably installed in the set position.

[0087] See also Figure 4 In one embodiment, the folding knife further comprises:

[0088] The anti-wear gasket 9 is arranged in the first positioning groove 121. The side of the anti-wear gasket 9 facing away from the bottom wall of the first positioning groove 121 cooperates with the first rolling bearing 7 to protect the first handle body 12 and prevent the first handle body 12 from wear.

[0089] In one embodiment, the second handle body 13 has a third positioning groove on the inner side wall close to the first handle body 12, and the anti-wear lining 4 is arranged in the third positioning groove to accommodate the anti-wear lining 4 on the second handle body 13, so that the overall thickness of the handle 1 is thinner and more convenient to hold.

[0090] In one embodiment, one end of the first stop column 5 is fixedly connected to the first handle body 12, and the other end of the first stop column 5 is fixedly connected to the second handle body 13, so that the first stop column 5 can be reliably installed on the knife handle 1, thereby improving the stopping stability of the first stop column 5 on the blade 2.

[0091] In one embodiment, one end of the second stop column 6 is fixedly connected to the first handle body 12, and the other end of the second stop column 6 is fixedly connected to the second handle body 13, so that the second stop column 6 can be reliably installed on the knife handle 1, thereby improving the stopping stability of the second stop column 6 on the blade 2.

[0092] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0093] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0094] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A folding knife, characterized in that: include: A knife handle, wherein the knife handle has a receiving cavity; a blade, the blade comprising a blade head, a cutting edge, and a blade tip, the blade head being pivotally connected to the blade handle, the blade having a closing position for at least accommodating the cutting edge and the blade tip in the accommodating cavity, and an opening position for exposing at least the cutting edge and the blade tip from the blade handle and enabling the blade to be used for cutting, the blade being rotated to switch between the closing position and the opening position, the blade head having a locking hole; A locking column, wherein the locking column is arranged on the knife handle, and the locking column is provided with a locking portion, and the locking portion is located in the accommodating cavity. The locking portion has a locking position that cooperates with the locking hole to limit the blade to the knife closing position. The locking portion also has an unlocking position that disengages from the locking hole to enable the blade to switch to the opening position. The locking portion switches between the locking position and the unlocking position as the blade rotates, and the cross-section of the locking portion gradually decreases toward the accommodating cavity.

2. The folding knife according to claim 1, characterized in that: The folding knife also includes: An anti-wear lining is provided on the shank, the anti-wear lining is located on a side wall of the accommodating cavity, and the locking column is provided on the anti-wear lining.

3. The folding knife according to claim 2, characterized in that: The anti-wear lining includes a first extension section and a second extension section, the first extension section and the second extension section are spaced apart from each other from top to bottom along the anti-wear lining, the first extension section is connected to the tool handle, a first end of the second extension section in the longitudinal direction is connected to the first extension section, and a second end of the second extension section in the longitudinal direction is suspended so that the second end of the second extension section in the longitudinal direction can move relative to the first extension section; The locking post is arranged on the second end of the second extension section in the longitudinal direction.

4. The folding knife according to claim 3, characterized in that: The second end of the second extension section in the longitudinal direction has a connecting hole; The locking column has a connecting portion, and the connecting portion and the locking portion are arranged in sequence along the length direction of the locking column. The outer diameter of the connecting portion is smaller than the outer diameter of the locking portion. The connecting portion cooperates with the connecting hole to connect the locking column and the anti-wear lining together. The locking portion abuts against the side wall of the second extension section to confine the connecting portion in the connecting hole.

5. The folding knife according to claim 1, characterized in that: The cutter head is provided with an unlocking toggle portion, which is located on a side of the blade where the cutting edge is provided. When the blade is in the knife closing position, the unlocking toggle portion is exposed on the knife handle.

6. The folding knife according to claim 1, characterized in that: The cutter head also has a first stop groove; The folding knife also includes: A first stop post is provided on the knife handle and is located in the accommodating cavity. The first stop post cooperates with the first stop groove to limit the blade to the knife closing position.

7. The folding knife according to claim 6, characterized in that: The cutter head also has a second stop groove, and the first stop column cooperates with the second stop groove to limit the blade to the open position.

8. The folding knife according to claim 7, characterized in that: The cutter head further comprises a third stop groove, wherein the third stop groove is spaced apart from the second stop groove; The folding knife also includes: The second stop post is provided on the tool handle and is located in the accommodating cavity. The second stop post cooperates with the third stop groove to limit the blade to the opening position.

9. The folding knife according to claim 8, characterized in that: The knife handle comprises: a first handle body, the first handle body having a first through hole; a second handle body, the second handle body and the first handle body are spaced apart from each other in a transverse direction of the knife handle to enclose the accommodating cavity, and the second handle body has a second through hole; a pivot shaft, wherein a first end of the pivot shaft is inserted into the first through-hole, and a second end of the pivot shaft is inserted into the second through-hole; a first fastener, wherein a rod portion of the first fastener is threadedly connected to a first end of the pivot shaft, and a head portion of the first fastener abuts against an outer side wall of the first handle body facing away from the second handle body; and a second fastener, wherein the stem of the second fastener is threadedly connected to the second end of the pivot shaft, and the head of the second fastener abuts against an outer side wall of the second handle body facing away from the first handle body; The cutter head has a pivot hole, the pivot shaft is passed through the pivot hole, and the pivot hole and the pivot shaft are rotatably matched.

10. The folding knife according to claim 9, characterized in that: The first handle has a first positioning groove; The blade has a second positioning groove on one side close to the second handle; The folding knife also includes: a first rolling bearing, wherein the pivot shaft is passed through a center hole of the first rolling bearing, the first rolling bearing cooperates with the first positioning groove, and the first rolling bearing is disposed between a bottom wall of the first positioning groove and the blade; A second rolling bearing, wherein the center hole of the second rolling bearing is provided for the pivot shaft to pass through, the second rolling bearing cooperates with the second positioning groove, and the second rolling bearing is provided between the bottom wall of the second positioning groove and the second handle body.

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