Folding knife

Abstract

The utility model discloses a folding knife, belongs to a manual knife technology, and solves the problems that the existing folding knife is unfolded through rotation when in use, the operation is troublesome, and potential safety hazards are caused when an exposed cutting edge rotates. The blade is pivotally connected to the moving member to fold into the receiving space from the unfolded state or unfold out of the receiving space from the folded state, and a positioning structure is configured to position the moving member to the handle at least in a first position and a second position during a movement stroke of the moving member. Therefore, when the folding knife is used, the knife can be unfolded from the handle through rotation for use or the unfolded knife is folded and stored in the handle, and the folded knife can also be moved on the handle so as to extend the knife out of the handle for use or retract into the storage space. Therefore, the folding knife is endowed with more use modes. And when the knife moves the extension handle and the retraction handle, the operation convenience is increased. When the knife extends out of the handle, the orientation of the blade is fixed, and potential safety hazards can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technology of manual knives, and particularly relates to a multi-purpose folding knife. Background Art

[0002] For the existing folding knives, when in use, the knife is unfolded from the handle, and when being stored, the knife is folded into the handle. They have a single function. When in use, the knife is unfolded by rotation, which is troublesome to operate. Moreover, during the process of unfolding the knife, the blade is exposed and rotates accordingly, posing a safety hazard. Content of the Utility Model

[0003] The technical problem to be solved and the technical task to be proposed by the utility model are to overcome the defects that the existing folding knives are troublesome to operate when unfolding the knife by rotation during use and the exposed blade rotates accordingly, causing a safety hazard. The utility model provides a folding knife in which the knife can extend out of the handle for use when in a folded state, thereby endowing the folding knife with more usage modes and convenience, and avoiding the rotation of the exposed blade by selecting a suitable adaptation mode to reduce the safety hazard.

[0004] To achieve the above object, the folding knife of the utility model comprises:

[0005] A handle having a storage space extending between a first end and a second end;

[0006] A moving member located within the handle and configured to move between the first end and the second end;

[0007] A positioning structure configured on the handle and the moving member, which positions the moving member at least at a first position and a second position in the handle during the moving stroke of the moving member;

[0008] A knife pivotally connected to the moving member to be folded into the storage space from an unfolded state or unfolded out of the accommodation space from a folded state. When the knife is in a folded state, the knife is moved from the first end to the second end by the moving member and positioned at the second position to extend the knife out of the storage space from the second end for use, or the knife is moved from the second end to the first end by the moving member and positioned at the first position to retract the extended knife from the second end into the storage space.

[0009] Accordingly, when using this folding knife, one usage mode is to unfold the knife from the handle for use or fold the unfolded knife into the handle by rotation. The second usage mode is to move the folded knife on the handle to extend the knife out of the handle for use or retract the extended knife into the storage space. Thus, the folding knife is endowed with more usage modes. For the second usage mode, the knife extends out of the handle and retracts into the handle while moving, changing the rotation in the first usage mode and increasing the convenience of operation. Moreover, when the knife extends out of the handle, the extended length changes from short to long, and the orientation of the blade is fixed, which can effectively reduce the safety hazard.

[0010] Preferably, the movable member includes a first side wall and a second side wall, the first side wall and the second side wall are connected by a connecting portion of the edges of the first side wall and the second side wall, and a clamping groove is formed between the first side wall and the second side wall, and the clamping groove is a part of the storage space, and the direction of the clamping groove is consistent with the direction of the storage space; the knife is connected between the first side wall and the second side wall via a pivot. Accordingly, the strength of the movable member and the reliability of assembly with the handle are increased. In particular, the clamping groove is a part of the storage space, simplifying the product structure.

[0011] Preferably, the knife is connected to the moving member via a pivot, and the pivot is shielded by the handle, so as to increase the regularity of the handle and ensure that the moving member moves smoothly without being hindered by the handle.

[0012] Preferably, the inner wall of the handle is provided with a track, and the moving member cooperates with the track to achieve movement, thereby ensuring the flexible movement of the moving member and ensuring that the moving member does not shake as much as possible.

[0013] Preferably, the handle is provided with a long hole extending between the first end and the second end and a first positioning groove and a second positioning groove distributed along the long hole, the mobile component is provided with a control member, the control member is exposed through the long hole to the handle for operating the control member to move the mobile component, the positioning structure includes the first positioning groove, the second positioning groove and the control member, when the control member is positioned in the first positioning groove, the mobile component is positioned in the first position, and when the control member is positioned in the second positioning groove, the mobile component is positioned in the second position. Accordingly, the mobile component is moved by operating the control member by the hand holding the handle, and the operation is convenient.

[0014] Preferably, the knife is provided with a locking groove, and an axially movable locking rod is mounted on the movable member, the locking rod has a handle exposed through the long hole for pressing, the locking rod is located in the locking groove by elastic force to lock the knife to prohibit the knife from rotating, and the locking rod is pressed to overcome the elastic force to unlock the knife to allow the knife to rotate. Accordingly, the knife is locked in a desired state by the locking rod, such as locked in a folded state, an unfolded state, and a semi-expanded state between the folded state and the unfolded state.

[0015] Preferably, the movable member is provided with an elastic part providing the elastic force, the inner end of the locking rod abuts against the elastic part, and the inner wall of the handle is provided with an escape groove for the elastic part to deform. Accordingly, the product structure can be simplified, parts can be saved, the assembly of parts can be reduced, and the reliability of the elastic force can be ensured.

[0016] Preferably, the locking rod axially penetrates the moving member, and a blind hole is provided on the inner wall of the handle. When the locking rod is pressed to overcome the elastic force to unlock the knife, the inner end of the locking rod extends into the blind hole to prevent the moving member from moving when the knife is allowed to rotate. Thus, the moving member is prevented from moving during the process of rotating the knife, thereby preventing safety hazards. This structure allows the knife to perform only one of the rotation and movement actions, and avoids performing both actions at the same time, thereby preventing misoperation.

[0017] Preferably, the position of the blind hole is configured such that when the moving member is positioned at the first position, the inner end of the locking rod points to the blind hole. Accordingly, the knife is only allowed to rotate at a specific position, avoiding the knife being able to rotate at any position and preventing misoperation.

[0018] Preferably, when the knife is folded into the storage space, it is locked by the locking rod to prevent the knife from rotating around the pivot. Accordingly, accidental unfolding of the knife is avoided.

[0019] Preferably, an elastic element acts on the knife, and the elastic element applies an unfolding elastic force to the knife to unfold the knife from the storage space when the locking rod unlocks the knife. Accordingly, when the knife is to be unfolded for use, the folded knife is unlocked by the locking rod, and the knife is automatically unfolded by the elastic force of the elastic element.

[0020] Preferably, the knife has a shoulder, and when the knife is in the unfolded state, the shoulder is blocked by the handle to prevent the moving member from moving from the first position to the second position. Accordingly, when the knife is unfolded, the moving member is prohibited from moving with the knife, avoiding misoperation.

[0021] Preferably, an inlet and outlet is provided at the second end of the handle. When the moving member moves from the first end to the second end and is positioned at the second position, the folded knife extends out of the storage space through the inlet and outlet for use and is restricted from unfolding by the second end of the handle. Accordingly, when the knife extends out of the storage space through the inlet and outlet, the folded knife is prohibited from rotating, avoiding misoperation.

[0022] Preferably, the positioning structure positions the moving member at the handle at a third position during the moving stroke of the moving member. The third position is between the first position and the second position. When the moving member is positioned at the handle at the third position, the folded knife is blocked from unfolding by the second end and / or the length of the knife extending out of the second end is shorter than the length of the folded knife extending out of the second end when the moving member is positioned at the handle at the second position. Accordingly, more positions are given to the knife as the moving member moves to meet the requirements.

[0023] Preferably, the knife is configured to be allowed to rotate only when the moving member is positioned at the handle at the first position and the moving member is allowed to move between the first end and the second end only when the knife is folded into the storage space from the first end. Accordingly, misoperation is avoided.

[0024] Preferably, when the knife is in the unfolded state, the length of the knife outside the handle is adjusted by moving the moving member between the first end and the second end. More usage methods are given to the folding knife.

[0025] Preferably, the rotation of the knife and the movement of the moving member are mutually exclusive.

[0026] The utility model configures a moving member inside the handle, pivotally connects the knife to the moving member to fold the knife from the unfolded state into the storage space or unfold the knife from the folded state out of the accommodating space, and configures a positioning structure to position the moving member at least at a first position and a second position on the handle during the moving stroke of the moving member. Accordingly, when using this folding knife, one usage mode is to unfold the knife from the handle for use or fold the unfolded knife into the handle by rotation. The second usage mode is to move the folded knife on the handle to extend the knife out of the handle for use or retract the extended knife into the storage space. Accordingly, more usage modes are given to the folding knife. For the second usage mode, the knife moves out of and retracts into the handle, changing the rotation of the first usage mode and increasing the operation convenience. Moreover, when the knife extends out of the handle, the extended length changes from short to long, and the orientation of the blade is fixed, which can effectively reduce potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Fig. 6 is an axonometric view of the folding knife according to Embodiment 1 of the utility model in the unfolded state;

[0028] Figure 2 is Figure 1 a schematic view of the disassembled state of the handle of the folding knife shown;

[0029] Figure 3 is Figure 2 a schematic view of another perspective of the structure shown;

[0030] Figure 4 is Figure 1 a front projection schematic view of one perspective of the folding knife shown;

[0031] Figure 5 is Figure 4 the left view of;

[0032] Figure 6 is Figure 5 a sectional view taken along line A-A of;

[0033] Figure 7 Fig. 40 is an axonometric view of the folding knife according to Embodiment 1 of the utility model in the folded state and the knife retracted into the storage space;

[0034] Figure 8 is Figure 7 a schematic view of the disassembled structure of the folding knife shown;

[0035] Figure 9 is Figure 8 a schematic view of another perspective of the structure shown;

[0036] Figure 10 is Figure 7 a front projection schematic view of one perspective of the folding knife shown;

[0037] Figure 11 For Figure 6 the schematic diagram of the folding knife folding into the storage space as shown;

[0038] Figure 12 the axonometric view of the folding knife according to Embodiment 1 of the present invention in the folded state and the blade extending out of the second end;

[0039] Figure 13 For Figure 12 the exploded schematic diagram of the structure of the folding knife as described;

[0040] Figure 14 For Figure 13 the schematic diagram of another perspective of the structure as shown;

[0041] Figure 15 For Figure 12 the front projection schematic diagram of one perspective of the folding knife as shown;

[0042] Figure 16 For Figure 11 the schematic diagram of the blade of the folding knife as shown extending out of the second end;

[0043] Figure 17 For Figure 3 the exploded schematic diagram of the structure of the moving member and the blade as shown;

[0044] Figure 18 the schematic cross-sectional structure diagram of the folding knife according to Embodiment 2 of the present invention in the unfolded state;

[0045] Figure 19 the schematic diagram of the folding knife according to Embodiment 3 of the present invention when rotating the blade;

[0046] Figure 20 For Figure 19 the sectional view taken along the line B - B of

[0047] Figure 21 For Figure 20 the sectional view taken along the line C - C of

[0048] Figure 22 For Figure 19 the schematic diagram of removing the second handle body of the folding knife as shown;

[0049] Figure 23 the schematic diagram of the second handle body according to Embodiment 3 of the present invention;

[0050] Description of the reference numerals in the figure:

[0051] 100 handle, 101 first end, 102 second end, 103 storage space, 104 inlet and outlet, 105 track,

[0052] 110 The first handle body, 111 elongated hole, 112 first positioning groove, 113 second positioning groove, 114 third positioning groove,

[0053] 120 The second handle body, 121 relief groove, 122 blind hole;

[0054] 200 Moving member, 201 first side wall, 202 second side wall, 203 connecting portion, 204 clamping groove, 205 elastic portion;

[0055] 300 Operating member, 301 protrusion, 302 first elastic element;

[0056] 400 Knife, 401 tool holder, 402 blade, 403 locking groove, 404 shoulder, 405 blade lock;

[0057] 500 Pivot;

[0058] 600 Locking lever, 601 thin section, 602 thick section;

[0059] 700 Elastic element. Detailed implementation manners

[0060] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0061] The terms "including" and "having" and any variations thereof in the description and claims of the present utility model are intended to cover non-exclusive inclusion. For example, a method or product including a series of technical features does not necessarily have to be limited to those clearly listed technical features, but may also include other technical features that can be included in the method or product and are not clearly listed.

[0062] In the description of the present utility model, it should be understood that the technical features defined by the terms "first", "second", "third", etc. with a sequential concept are only for clearly describing the defined technical features, so that the defined technical features can be clearly distinguished from other technical features, rather than representing such naming in actual implementation. Therefore, it should not be construed as a limitation to the present utility model.

[0063] The present utility model will be introduced in detail below with reference to specific embodiments and the accompanying drawings.

[0064] Embodiment 1

[0065] AsFigure 1-17 As shown, the folding knife includes a handle 100, a moving member 200, a positioning structure, and a blade 400.

[0066] The handle 100 is formed by connecting a first handle body 110 and a second handle body 120 together with fasteners. A receiving space 103 is maintained between the first handle body 110 and the second handle body 120, and the receiving space 103 extends between a first end 101 and a second end 102. Slide grooves are provided on the inner walls of the first handle body and the second handle body as tracks 105. A long hole 111 extending between the first end and the second end and first positioning grooves 112, second positioning grooves 113, and third positioning grooves 114 distributed along the long hole are provided on the first handle body 110. The first positioning grooves 112, the third positioning grooves 114, and the second positioning grooves 113 are distributed in sequence from the first end to the second end. An inlet / outlet 104 is provided at the second end of the handle, and the periphery of the inlet / outlet 104 is closed.

[0067] The moving member 200 is located inside the handle 100 and is configured to move between the first end 101 and the second end 102. Specifically, the moving member 200 includes a first side wall 201 and a second side wall 202. The first side wall and the second side wall are connected by a connecting portion 203 at their edges and a clamping groove 204 is formed between the first side wall and the second side wall. The orientation of the clamping groove 204 is the same as that of the receiving space 103. The first side wall 201 is located in the slide groove of the first handle body 110, the second side wall 202 is located in the slide groove of the second handle body 120, and the clamping groove 204 serves as a part of the receiving space 103.

[0068] The moving member 200 is configured to control a control member 300. The control member 300 is exposed from the handle through the long hole 111 for operating the control member 300 to drive the moving member 200 to move. In the figure, the control member is embodied as a push button. And, a protrusion 301 is provided on the push button. The push button is acted on by the elastic force of a first elastic element 302 to make the protrusion 301 sink into the first positioning groove, the second positioning groove, or the third positioning groove. When the protrusion 301 sinks into the first positioning groove, the moving member 200 is located at a first position. When the protrusion 301 sinks into the second positioning groove, the moving member 200 is located at a second position. When the protrusion 301 sinks into the third positioning groove, the moving member 200 is located at a third position, and the third position is located between the first position and the second position. Press the control member 300 to make the protrusion withdraw from the positioning groove where it is located, then the control member can be pushed along the long hole, and the moving member is driven by the control member to move. When the moving member moves to the corresponding positioning groove, release the control member, and the control member can make the protrusion sink into the corresponding positioning groove by the elastic force of the first elastic element to position the moving member.

[0069] The positioning structure is disposed between the handle and the moving member. The positioning structure positions the moving member at a first position, a second position, and a third position on the handle during the moving stroke of the moving member. Specifically, the positioning structure includes a first positioning groove 112, a second positioning groove 113, a third positioning groove 114, and an operating member 300. When the operating member is positioned in the first positioning groove, the moving member is positioned at the first position. When the operating member is positioned in the second positioning groove, the moving member is positioned at the second position. When the operating member is positioned in the third positioning groove, the moving member is positioned at the third position.

[0070] The knife 400 is pivotally connected between a first side wall 201 and a second side wall 202 of the moving member 200 via a pivot 500, and the pivot 500 is shielded inside the handle by the handle. Accordingly, the knife can be folded from the Figure 1-6 shown deployed state into the storage space or from the Figure 7-11 shown folded state and deployed out of the accommodation space. When the knife is in the folded state, the moving member moves from the first end to the second end and is positioned at the second position to extend the knife from the second end out of the storage space for use as shown in Figure 12-16 or the moving member moves from the second end to the first end and is positioned at the first position to retract the extended knife from the second end into the storage space as shown in Figure 7-11 .

[0071] Furthermore, the knife 400 is provided with a locking groove 403, and a locking rod 600 that axially moves is assembled on the moving member. The locking rod has a thin section 601 and a thick section 602. The locking rod 600 is exposed outside the handle 100 through a long hole 111 for pressing. The thick section of the locking rod 600 is located in the locking groove by elastic force to lock the knife to prevent the knife from rotating. Pressing the locking rod overcomes the elastic force to move the thick section away from the locking groove, and the thin section corresponds to the locking groove to unlock the knife to allow the knife to rotate. Moreover, an elastic portion 205 is provided on the moving member 200 to provide elastic force, and the inner end of the locking rod abuts against the elastic portion. The elastic portion is formed by blanking on the second side wall 202. As shown in the figure, there are three locking grooves 403, and when the locking rod and the three locking grooves are locked respectively, the knife is positioned and locked in the Figure 1-6 shown deployed state, Figure 7-11 shown folded state, and a semi-deployed state between the deployed state and the folded state. The knife is locked by the locking rod to prevent the knife from rotating around the pivot.

[0072] In this embodiment, to avoid misoperation, the knife 400 further has a shoulder 404. When the knife is in the deployed state, the shoulder 404 is blocked by the handle 100 to prevent the moving member from moving from the first position to the second position. When the moving member moves from the first end to the second end and is positioned at the second position, the folded knife 400 extends out of the storage space from the inlet / outlet 104 for use and is restricted from deployment by the second end of the handle. In other embodiments, the shoulder is cancelled, so that when the knife is in the deployed state, it is not blocked, enabling the moving member and the knife to move between the first position and the second position, and accordingly, the length of the knife outside the handle can be adjusted.

[0073] Moreover, in view of the existence of the third positioning groove 114, the positioning structure positions the moving member at the handle at the third position during the moving stroke of the moving member. When the moving member is positioned at the handle at the third position, the folded knife is blocked from deployment by the second end and / or the length of the knife extending out of the second end is shorter than the length of the folded knife extending out of the second end when the moving member is positioned at the handle at the second position.

[0074] Moreover, when the moving member 200 is positioned at the handle at the first position, the elastic portion 205 corresponds to the avoidance groove 121. The elastic portion has a large deformation space, providing sufficient space for the axial movement of the locking rod, and enabling the locking rod to unlock the knife. When the moving member moves towards the second end, the elastic portion is misaligned with the avoidance groove, and the deformation space of the elastic portion is limited, not providing sufficient space for the axial movement of the locking rod and unable to unlock the knife by the locking rod. Therefore, only when the moving member is positioned at the handle at the first position is the knife allowed to rotate for folding or deployment.

[0075] Moreover, due to the existence of the aforementioned shoulder 404, when the knife is in the deployed state, the shoulder 404 is blocked by the handle 100 to prevent the moving member from moving from the first position to the second position. When the knife is folded into the storage space from the first end, since the shoulder avoids the block, the moving member is allowed to move between the first end and the second end.

[0076] In this embodiment, the knife 400 is an assembly mechanism, which includes an assembled knife holder 401 and a detachable blade 402. The knife holder 401 constituting the knife is connected to the moving member 200 through a pivot 500. For the knife with this assembly structure, the blade 402 is locked to the knife holder 401 by a blade lock 405. When replacing the blade, press the blade lock to unlock the blade, and the blade can be pulled out and a new blade can be installed. In other embodiments, the disassembly and assembly structure of the blade may not be limited to the illustrated structure. Moreover, in other embodiments, the knife can be an integral structure, that is, the knife is embodied as a single component.

[0077] For the folding knife with the above structure, by operating the locking rod 600, the knife can be placed in three postures: deployed, semi-deployed, and folded. By operating the locking rod, the length of the knife outside the handle can be adjusted when the knife is deployed, and the length of the knife extending out of the handle can be adjusted when the knife is folded.

[0078] Embodiment 2

[0079] As Figure 18 shown, the difference between the folding knife of this embodiment and that of Embodiment 1 is that an automatic unfolding function is added. An elastic element 700 acts on the knife 400, and the elastic element 700 applies an unfolding elastic force to the knife to unfold the knife from the storage space when the locking lever unlocks the knife. The rest of the structure of this embodiment is the same as that of Embodiment 1 and will not be described in detail.

[0080] Embodiment 3

[0081] As Figure 19-23 shown, the difference between the folding knife of this embodiment and that of Embodiment 1 is that a misoperation prevention function is added. The locking lever 600 axially penetrates through the moving member 200, and a blind hole 122 is provided on the inner wall of the second handle body 120. Pressing the locking lever to overcome the elastic force unlocks the knife, and when the knife is allowed to rotate, the inner end of the locking lever 600 extends into the blind hole 122 to prevent the moving member from moving. In particular, the position of the blind hole is configured such that when the moving member is positioned at the first position, the inner end of the locking lever points to the blind hole. Accordingly, when the locking lever is pressed to unlock, the locking lever extends into the blind hole, preventing the moving member from moving with the knife and avoiding misoperation. The rest of the structure of this embodiment is the same as that of Embodiment 1 and will not be described in detail.

[0082] In the foregoing embodiments, in particular, it is configured that the rotation of the knife and the movement of the moving member are mutually exclusive, that is, when the knife can rotate, the moving member cannot move, and when the moving member moves, the knife cannot rotate. Accordingly, it is possible to avoid the simultaneous movement of the rotation of the knife and the movement of the moving member, thereby eliminating potential safety hazards.

Claims

1. Folding knife, characterized in that Comprising: A handle (100) having a receiving space (103) extending between a first end (101) and a second end (102); A moving member (200) located within the handle and configured to move between the first end and the second end; A positioning structure configured on the handle and the moving member, the positioning structure positioning the moving member at least at a first position and a second position within the handle during the moving stroke of the moving member; A knife (400) pivotally connected to the moving member (200) to be folded into the receiving space from an unfolded state or unfolded out of the receiving space from a folded state. When the knife is in the folded state, the knife moves from the first end to the second end through the moving member and is positioned at the second position to extend the knife out of the receiving space from the second end for use, or the knife moves from the second end to the first end through the moving member and is positioned at the first position to retract the extended knife from the second end into the receiving space.

2. The folding knife according to claim 1, characterized in that: The moving member (200) includes a first side wall (201) and a second side wall (202). The first side wall and the second side wall are connected by a connecting portion (203) at their edges and form a clamping groove (204) therebetween. The clamping groove (204) is part of the receiving space (103), and the orientation of the clamping groove is the same as that of the receiving space; The knife (400) is pivotally connected between the first side wall and the second side wall via a pivot (500).

3. The folding knife according to claim 1, characterized in that: The knife (400) is pivotally connected to the moving member (200) via a pivot (500), and the pivot (500) is shielded within the handle by the handle.

4. The folding knife according to claim 1, characterized in that: The inner wall of the handle (100) is provided with a track (105), and the moving member (200) cooperates with the track (105) to achieve movement.

5. The folding knife according to claim 1, characterized in that: The handle (100) is provided with a long hole (111) extending between the first end and the second end, and a first positioning groove (112) and a second positioning groove (113) distributed along the long hole. The moving member (200) is configured with a control member (300). The control member (300) is exposed out of the handle through the long hole (111) for operating the control member to drive the moving member to move. The positioning structure includes the first positioning groove, the second positioning groove and the control member. When the control member (300) is positioned in the first positioning groove (112), the moving member is positioned at the first position. When the control member (300) is positioned in the second positioning groove (113), the moving member is positioned at the second position.

6. The folding knife according to claim 5, wherein: The knife (400) is provided with a locking groove (403). An axially movable locking rod (600) is assembled on the moving member (200). The locking rod (600) is exposed out of the handle through the long hole (111) for pressing. The locking rod (600) is located in the locking groove by elastic force to lock the knife to prohibit the knife from rotating. Pressing the locking rod overcomes the elastic force to unlock the knife to allow the knife to rotate.

7. The folding knife according to claim 6, characterized in that: The moving member (200) is provided with an elastic portion (205) for providing the elastic force. The inner end of the locking rod (600) abuts against the elastic portion (205), and the inner wall of the handle is provided with an avoidance groove (121) for the elastic portion to deform.

8. The folding knife according to claim 6, characterized in that: The locking lever (600) axially penetrates through the moving member (200). A blind hole (122) is provided on the inner wall of the handle (100). Pressing the locking lever to overcome the elastic force unlocks the knife, allowing the inner end of the locking lever (600) to extend into the blind hole (122) when the knife rotates to prevent the moving member from moving.

9. The folding knife according to claim 8, characterized in that: The position of the blind hole (122) is configured such that when the moving member is positioned at the first position, the inner end of the locking lever points to the blind hole.

10. The folding knife according to claim 6, characterized in that: When the knife (400) is folded into the storage space, it is locked by the locking lever (600) to prevent the knife from rotating around the pivot.

11. The folding knife according to claim 10, characterized in that: An elastic element (700) acts on the knife (400). The elastic element applies an elastic force to unfold the knife to unfold the knife from the storage space when the locking lever unlocks the knife.

12. The folding knife according to any one of claims 1-11, characterized in that: The knife (400) has a shoulder (404). When the knife is in the unfolded state, the shoulder (404) is blocked by the handle (100) to prevent the moving member from moving from the first position to the second position.

13. The folding knife according to any one of claims 1-11, characterized in that: The second end of the handle (100) is provided with an inlet / outlet (104). When the moving member moves from the first end to the second end and is positioned at the second position, the folded knife (400) extends out of the storage space through the inlet / outlet (104) for use and is restricted from unfolding by the second end of the handle.

14. The folding knife according to any one of claims 1-11, characterized in that: The positioning structure positions the moving member at the handle at a third position during the moving stroke of the moving member. The third position is between the first position and the second position. When the moving member is positioned at the handle at the third position, the folded knife (400) is blocked from unfolding by the second end (102) and / or the length of the knife (400) extending out of the second end is shorter than the length of the folded knife extending out of the second end when the moving member is positioned at the handle at the second position.

15. The folding knife according to any one of claims 1-11, characterized in that: The knife (400) is configured to allow rotation only when the moving member (200) is positioned at the handle at the first position and allow the moving member (200) to move between the first end and the second end only when the knife is folded into the storage space from the first end (102).

16. The folding knife according to any one of claims 1-11, characterized in that: When the knife (400) is in the unfolded state, the length of the knife outside the handle is adjusted by the movement of the moving member (200) between the first end and the second end.

17. The folding knife according to any one of claims 1-11, characterized in that: The rotation of the knife (400) and the movement of the moving member (200) are mutually exclusive.

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