Folding knife unlocking mechanism and folding knife

Abstract

The utility model discloses a folding knife unlocking mechanism and a folding knife, and belongs to the technical field of folding knives. The clamping device comprises a front handle plate, an elastic piece, a sliding part, a rotating shaft and a pressing part, the elastic piece is arranged on the front handle plate, one side of the elastic piece is a free end, the sliding part is installed on the front handle plate in a sliding mode, the pressing part is installed on the front handle plate in a rotating mode through the rotating shaft, one end of the pressing part is a pressing end, the pressing end is installed on the front side of the free end in a pressed mode, and the other end of the pressing part is a pressing end. In order to solve the problems that an existing folding knife line lock cannot stably lock a knife edge, and a folding knife main shaft unlocking mechanism is complex in structure and difficult to produce, install and maintain, on the premise that an elastic piece is used for locking, the folding knife main shaft unlocking mechanism can not lock the knife edge stably, and the folding knife main shaft unlocking mechanism can not lock the knife edge stably. According to the folding knife, the sliding part, the sliding shaft and the slope sliding groove are additionally arranged to unlock the elastic piece, so that a user can unlock the knife head only by pushing the sliding part when the knife head is completely unfolded, the knife edge is prevented from being accidentally folded, and the safety performance of the folding knife is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a folding tool unlocking mechanism and folding knife belong to folding knife technical field. BACKGROUND

[0002] Folding knife is a portable tool that can fold the blade into the handle. Its design makes the knife safer when not in use and more convenient to carry. Wire lock is one of the most common locking mechanisms in folding knives, which locks the blade with a spring steel sheet. However, if the steel sheet is of poor quality or designed unreasonably, it may cause premature wear of the steel sheet and fail to securely lock the blade. The blade may accidentally fold during use, causing serious safety hazards, especially when a large pressure is applied. Therefore, in order to ensure the safety performance of the folding knife lock, the existing folding knife often discards the wire lock and uses a spindle unlocking mechanism, such as the main shaft lock and folding knife with safety disclosed in the announcement No. CN220972448U. However, due to the frequent opening and closing of the folding knife during use, the spindle bears a large amount of rotation and pressure, and the spindle may become loose or worn out. The loosening of the spindle will make the opening and closing of the blade unstable, causing the blade to shake during use of the folding knife, increasing the possibility of accidental injury. Moreover, its structure is complex, and internal structural deformation or fracture is difficult to detect in time, making production, installation and maintenance more difficult.

[0003] Therefore, there is an urgent need to develop a new folding tool unlocking mechanism and folding knife to solve the above technical problems. SUMMARY

[0004] The purpose of the present utility model is to solve the problem that the existing folding knife wire lock cannot securely lock the blade, and the folding knife spindle unlocking mechanism has a complex structure, making production, installation and maintenance more difficult. In the following text, a brief overview of the present utility model is given to provide a basic understanding of some aspects of the present utility model. It should be understood that this overview is not an exhaustive overview of the present utility model. It is not intended to determine the key or important parts of the present utility model, nor to limit the scope of the present utility model.

[0005] The technical solution of the present utility model is as follows:

[0006] Scheme one, a folding tool unlocking mechanism, comprising a front handle plate, a spring sheet, a sliding part, a rotating shaft and a compression part, the spring sheet is arranged on the front handle plate, one side of the spring sheet is a free end, the sliding part is slidingly installed on the front handle plate, the compression part is rotatably installed on the front handle plate through the rotating shaft, one end of the compression part is arranged as a compression end, the compression end is press-fitted to the front side of the free end, the other end of the compression part is a pressing end, the end face of the pressing end is slidingly attached to the back face of one side of the sliding part.

[0007] Preferably, the front end face of the pressing end is a slope face, which is slidingly attached to the back face of one side of the sliding part.

[0008] Preferably, the one side of the sliding part is a slanted sliding surface, which is in sliding fit with the end surface of the pressing end.

[0009] Preferably, the pressing end is fixedly installed with a stop block on the side close to the elastic sheet, and the free end is provided with a groove, and the stop block is clamped in the groove.

[0010] Preferably, the free end of the elastic sheet is installed with a pressing plate on the front side.

[0011] Preferably, the front handle plate is processed with a sliding groove, and the sliding part is slidably arranged in the sliding groove.

[0012] Preferably, a spring mounting groove is formed in the sliding part, and a spring is arranged in the spring mounting groove, one end of the spring is fixedly connected with the bottom of the spring mounting groove through a connecting block, and the other end of the spring is fixedly connected with the top side wall of the spring mounting groove.

[0013] Preferably, one side of the elastic sheet is a free end, and the other side is a fixed end, and the fixed end is fixedly connected with the front handle plate or is integrally processed and formed.

[0014] Preferably, one side of the shaft is installed on the front handle plate through a mounting seat, and the other side of the shaft is in rotational fit with the middle part of the pressing part.

[0015] Preferably, the sliding groove of the front handle plate is processed with a sliding groove through hole, a limiting sliding block is slidably arranged in the sliding groove through hole, and the front side of the limiting sliding block is fixedly connected with the sliding part.

[0016] Scheme two, a folding knife is realized by relying on the unlocking mechanism of the folding knife in scheme one, in addition to the unlocking mechanism of the folding knife, it also includes a blade, a rear handle plate and a main shaft, the bottom side of the front handle plate and the rear handle plate is fixedly connected, the blade is clamped between the top side of the front handle plate and the rear handle plate, and the bottom side of the blade is rotatably connected with the front handle plate and the rear handle plate through the main shaft, the bottom of the blade is provided with a clamping groove, and the free end of the elastic sheet is clamped in the clamping groove.

[0017] The utility model has the following beneficial effects:

[0018] 1. Under the premise of using the elastic sheet to lock, the sliding part and the pressing part are additionally added to unlock the elastic sheet, so that the user can only unlock the blade by pushing the sliding part when the blade is completely unfolded, thereby preventing the blade from being accidentally folded and improving the safety performance of the folding knife.

[0019] 2. The utility model uses one hand to push the sliding part, can realize the end surface of pressing end 52 and one side back surface of sliding part 3 sliding cooperation, through the sliding part 3 presses the pressing end, makes the compression part with the rotating center of the pivot rotation, the compression end is under the action of pressing rotation and is raised, and then drives the elastic sheet and pops out the unlocking, this is especially convenient for the scene needing quick operation, one-handed operation reduces the operation step, especially under the condition that one hand is occupied or needs quick response, can improve the operation efficiency;

[0020] 3. The utility model discloses the structure is relatively simple, and the elastic sheet directly locks the tool bit, and there is no complex mechanical connecting structure, and this simple design makes the utility model discloses in the use process very little failure, and easy maintenance simultaneously;

[0021] 4. The utility model discloses the design is ingenious, and the part composition is simple, and relatively few parts mean that the wear point is less, and the structure is stable, therefore under the condition of frequent use, it is also difficult to appear the unlocking failure situation, enhances the reliability, and simultaneously convenient for production and processing, reduces the processing difficulty and cost, promotes production efficiency and quality. DRAWINGS

[0022] Figure 1 It is a kind of folding tool unlocking mechanism's front view;

[0023] Figure 2 It is a kind of folding tool unlocking mechanism's explosion view;

[0024] Figure 3 It is the cooperation schematic drawing of the compression part and sliding part of the utility model;

[0025] Figure 4 It is the cooperation schematic drawing of the slope surface and inclined surface of the utility model;

[0026] Figure 5 It is the cooperation schematic drawing of the stop block and recess of the utility model;

[0027] Figure 6 It is the cooperation schematic drawing of the spring and spring installation slot of the utility model;

[0028] Figure 7 It is the cooperation schematic drawing of the compression part and stop block of the utility model;

[0029] Figure 8 It is the structure schematic drawing of the elastic sheet of the utility model;

[0030] Figure 9 It is a kind of folding knife's perspective view.

[0031] In the figure: 1 - front handle plate, 2 - spring piece, 3 - sliding part, 4 - rotating shaft, 5 - compression part, 6 - pressing plate, 7 - spring, 8 - mounting seat, 9 - limit sliding block, 11 - sliding groove, 12 - sliding groove through hole, 21 - free end, 22 - fixed end, 23 - groove, 30 - inclined sliding surface, 31 - spring mounting groove, 32 - connecting block, 51 - compression end, 52 - pressing end, 53 - inclined surface, 54 - stop block, 101 - cutter head, 102 - rear handle plate, 103 - main shaft, 1011 - clamping groove. DETAILED DESCRIPTION

[0032] To make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will describe the utility model through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and not to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0033] The connection mentioned in the utility model is divided into fixed connection and detachable connection, the fixed connection is namely the non-detachable connection including but not limited to the edge folding connection, rivet connection, bonding connection and welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to the screw connection, buckle connection, pin connection and hinge connection and other conventional detachable modes, when the specific connection mode is not limited, at least one connection mode can be found in the existing connection mode to realize the function, and the person skilled in the art can select it according to the need. For example: the fixed connection selects the welding connection, and the detachable connection selects the hinge connection.

[0034] DETAILED DESCRIPTION Figures 1-8 In order to illustrate the embodiment, the folding knife unlocking mechanism of the embodiment comprises a front handle plate 1, a spring piece 2, a sliding part 3, a rotating shaft 4 and a compression part 5, the front handle plate 1 is provided with the spring piece 2, one side of the spring piece 2 is a free end 21, the sliding part 3 is slidingly installed on the front handle plate 1, the compression part 5 is rotatably installed on the front handle plate 1 through the rotating shaft 4, one end of the compression part 5 is provided as a compression end 51, the compression end 51 is pressed on the front side of the free end 21, the other end of the compression part 5 is a pressing end 52, and the end face of the pressing end 52 is slidingly attached to the back face of one side of the sliding part 3.

[0035] One side of the spring piece 2 is a free end 21, and the other side is a fixed end 22, and the fixed end 22 is fixedly connected with the front handle plate 1 or integrally formed.

[0036] One side of the rotating shaft 4 is installed on the front handle plate 1 through the mounting seat 8, and the other side of the rotating shaft 4 is rotatably connected with the middle part of the compression part 5, so that the maintenance, disassembly and replacement are facilitated.

[0037] The front handle plate 1 is arranged below the blade head 101 of the folding knife, or is directly hinged with the lower side of the blade head 101, and the blade head 101 is provided with a clamping groove 1011, when the blade head 101 needs to be locked, the sliding part 3 is pushed downward, the free end 21 of the elastic sheet 2 is inclined to reset to the back part, the free end 21 of the elastic sheet 2 is clamped in the bottom end clamping groove 1011 of the blade head 101, and the locking function of limiting the rotation of the blade head 101 is realized, when the folding knife needs to be unlocked, the upper sliding part 3 is pushed, the end face of the pressing end 52 is slidably matched with the back face of one side of the sliding part 3, the pressing end 52 is pressed by the sliding part 3, the pressing part 5 rotates around the rotating shaft 4 as the rotating center, the pressing end 51 is lifted under the pressing rotation of the sliding part 3, that is, the pressing end 52 is turned over and lifted to the front side, and then drives the free end 21 of the elastic sheet 2 to rebound out of the clamping groove 1011, so that the unlocking is realized, and the blade head 101 can be freely rotated.

[0038] Specific implementation method two: in combination with Figures 1-8 In this embodiment, a folding knife unlocking mechanism is realized by relying on the folding knife unlocking mechanism in the first embodiment. In this embodiment, the front end face of the pressing end 52 is a slope face 53, the slope face 53 is slidably matched with the back face of one side of the sliding part 3, or the back face of one side of the sliding part 3 is a slope sliding face 30, the slope sliding face 30 is slidably matched with the end face of the pressing end 52, and the slope face 53 and the slope sliding face 30 are both inclined faces with a certain slope, that is, at least one side of the front end face of the pressing end 52 and the back face of one side of the sliding part 3 is an inclined face with a certain slope.

[0039] The slope face 53 and the slope sliding face 30 are arranged in parallel, that is, when the slope face 53 is inclined downward, the slope sliding face 30 is inclined upward, and when the slope face 53 is inclined upward, the slope sliding face 30 is inclined downward.

[0040] When the slope face 53 is inclined downward and the slope sliding face 30 is arranged to be inclined upward, as shown in FIG. 5, when the operator pushes the sliding part 3 upward with one hand, when the slope face 53 is inclined upward and the slope sliding face 30 is arranged to be inclined downward, as shown in FIG. 6, when the operator pushes the sliding part 3 downward with one hand, the sliding part 3 drives the back face of one side to slide on the front end face of the pressing end 52 synchronously, due to the height difference of the slope face 53 or the slope sliding face 30, the free end 21 is gradually turned over outward around the fixed end 22, the free end 21 of the elastic sheet 2 rebounds, moves out of the bottom end clamping groove 1011 of the blade head 101, and the blade head 101 can be freely rotated. Figure 3 Figure 4

[0041] Specific implementation method three: in combination with Figures 1-8 ​​This embodiment describes a folding knife unlocking mechanism. This embodiment is based on the folding knife unlocking mechanism described in the second embodiment. In this embodiment, a pressure plate 6 is installed in front of the free end 21 of the spring piece 2. The pressure plate 6 acts as a weight to press down the spring piece 2, so that the free end 21 can remain locked in the locking slot 1011 under the gravity of the pressure plate 6. The purpose of this design is to not only rely on the elastic properties of the free end 21 of the spring piece 2 to achieve locking and ejection, but also to avoid fatigue of the spring piece 2 caused by long-term use, weakening or even deformation of the elastic capacity of locking and resetting, resulting in the unlocking mechanism being stuck or even stuck and unable to achieve the unlocking function, thereby extending the service life of the spring piece 2.

[0042] Similarly, a stopper 54 is fixedly installed on the side of the clamping end 51 close to the spring piece 2, and a groove 23 is provided on the back of the free end 21. The stopper 54 is clamped inside the groove 23. The purpose of setting the stopper is that under the toughness of the automatic rebound of the spring piece 2, the stopper 54 moves synchronously with the clamping end 51, and the free end 21 of the auxiliary spring piece 2 is lifted to provide a supporting force for it, thereby avoiding the toughness fatigue caused by the repeated rebound of the spring piece 2 and reducing its elasticity. Similar to the above, the purpose is to extend the service life of the spring piece 2.

[0043] Specific implementation method four: Combination Figures 1-8 To describe this embodiment, a folding tool unlocking mechanism of this embodiment is realized based on a folding tool unlocking mechanism described in the second specific embodiment. A folding tool unlocking mechanism of this embodiment, the front handle plate 1 is processed with a slide groove 11, and the sliding part 3 is slidably arranged inside the slide groove 11, and the slide groove limits the sliding installation position of the sliding part 3 on the front handle plate 1.

[0044] The sliding portion 3 is provided with a spring mounting groove 31, in which a spring 7 is provided. One end of the spring 7 is fixedly connected to the bottom of the spring mounting groove 31 through a connecting block 32, and the other end of the spring 7 is fixedly connected to the top side wall of the spring mounting groove 31. The setting of the spring 7 enables the sliding portion 3 to always remain in the reset state at the top of the slide groove 11 after the operator releases his hand, which makes it more convenient for one-handed operation while enhancing the safety locking performance.

[0045] A more preferred technical solution is that a slide groove through hole 12 is processed at the bottom of the slide groove 11 of the front handle plate 1, and a limit slider 9 is slidingly set in the slide groove through hole 12. The front side of the limit slider 9 is fixedly connected to the sliding part 3. The locking sliding setting of the slide groove through hole 12 and the limit slider 9 limits the front and rear positions of the sliding part 3 to prevent it from falling out.

[0046] Specific implementation method five: Combination Figures 1-9To illustrate the embodiment, the folding knife of the embodiment is realized by relying on the folding tool unlocking mechanism of any one of the first to fourth embodiments, in addition to the folding tool unlocking mechanism, further comprising a blade head 101, a rear handle plate 102 and a main shaft 103, the bottom side of the front handle plate 1 and the rear handle plate 102 are fixedly connected through a connecting block, so that the front handle plate 1 and the rear handle plate 102 have a cavity for accommodating the folding retraction of the blade head 101, the blade head 101 is clamped between the top side of the front handle plate 1 and the rear handle plate 102, and the bottom side of the blade head 101 is rotatably connected with the front handle plate 1 and the rear handle plate 102 through the main shaft 103, that is, when the blade head 101 is retracted along the main shaft 103, the blade head 101 can be arranged in the cavity, the bottom of the blade head 101 has a clamping groove 1011, and the blade head 101 is locked and unlocked through the cooperation of the bottom clamping groove 1011 and the folding tool unlocking mechanism, that is, when the blade head 101 is locked, the free end 21 of the elastic sheet 2 of the folding tool unlocking mechanism is clamped in the clamping groove 1011, and the blade head 101 is in a locked state, and when the blade head 101 is unlocked, the free end 21 of the elastic sheet 2 is popped out of the clamping groove 1011, and the blade head 101 can be freely rotated along the main shaft 103.

[0047] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities according to the mathematical knowledge of arrangement and combination, so that the technical solutions after arrangement and combination are not described one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the utility model.

[0048] The above only describes preferred embodiments of the utility model, and is not used to limit the utility model, and those skilled in the art can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A folding knife unlocking mechanism, characterized by: The invention comprises a front handle plate (1), a spring piece (2), a sliding part (3), a rotating shaft (4) and a pressing part (5), wherein the front handle plate (1) is provided with a spring piece (2), one side of the spring piece (2) is a free end (21), the sliding part (3) is slidably mounted on the front handle plate (1), the pressing part (5) is rotatably mounted on the front handle plate (1) via the rotating shaft (4), one end of the pressing part (5) is provided as a pressing end (51), the pressing end (51) is pressed on the front side of the free end (21), the other end of the pressing part (5) is a pressing end (52), and the end face of the pressing end (52) is slidably fitted with the back side of one side of the sliding part (3).

2. A folding knife unlocking mechanism according to claim 1, characterized in that: The front end surface of the pressing end (52) is a sloped surface (53), and the sloped surface (53) is in sliding contact with the back surface of one side of the sliding portion (3); or the back surface of one side of the sliding portion (3) is an inclined sliding surface (30), and the inclined sliding surface (30) is in sliding contact with the end surface of the pressing end (52).

3. The folding knife unlocking mechanism according to claim 1, characterized in that: A stopper (54) is fixedly mounted on one side of the pressing end (51) close to the spring piece (2), a groove (23) is provided on the back of the free end (21), and the stopper (54) is clamped inside the groove (23).

4. The folding knife unlocking mechanism according to claim 1, characterized in that: A pressing plate (6) is installed on the front side of the free end (21) of the elastic piece (2).

5. The folding knife unlocking mechanism according to claim 1, characterized in that: A slide groove (11) is processed on the front side of the front handle plate (1), and the sliding portion (3) is slidably arranged inside the slide groove (11).

6. The folding knife unlocking mechanism according to claim 5, characterized in that: The sliding portion (3) is provided with a spring installation groove (31), and a spring (7) is provided in the spring installation groove (31). One end of the spring (7) is fixedly connected to the bottom of the spring installation groove (31) through a connecting block (32), and the other end of the spring (7) is fixedly connected to the top side wall of the spring installation groove (31).

7. The folding knife unlocking mechanism according to claim 1, characterized in that: One side of the spring piece (2) is a free end (21), and the other side is a fixed end (22), and the fixed end (22) is fixedly connected to the front handle plate (1) or integrally formed.

8. The folding knife unlocking mechanism according to claim 1, characterized in that: One side of the rotating shaft (4) is mounted on the front handle plate (1) via a mounting seat (8), and the other side of the rotating shaft (4) is rotationally engaged with the middle portion of the pressing portion (5).

9. The folding knife unlocking mechanism according to claim 5, characterized in that: A slide groove through hole (12) is machined at the bottom of the slide groove (11) of the front handle plate (1), a limit slider (9) is slidably arranged in the slide groove through hole (12), and the front side of the limit slider (9) is fixedly connected to the sliding part (3).

10. A folding knife, implemented by relying on a folding knife unlocking mechanism according to any one of claims 1 to 9, characterized in that: In addition to the folding knife unlocking mechanism, it also includes a cutter head (101), a rear handle plate (102) and a main shaft (103), wherein the bottom sides of the front handle plate (1) and the rear handle plate (102) are fixedly connected, the cutter head (101) is clamped between the top sides of the front handle plate (1) and the rear handle plate (102), and the bottom side of the cutter head (101) is connected to the front handle plate (1) and the rear handle plate (102) in a rotational manner through the main shaft (103), and the bottom of the cutter head (101) has a slot (1011), and the free end (21) of the spring piece (2) is mounted in the slot (1011).

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