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 handle comprises a front handle plate, an elastic piece, a pressing part and a sliding part, the elastic piece is arranged on the front handle plate, one side of the elastic piece is a free end, one side of the pressing part is rotationally connected with the front handle plate through a rotating shaft, the other end of the pressing part is pressed on the outer side of the free end, the sliding part is installed on the front handle plate in a sliding mode, and the sliding part and the pressing part are connected in a matched mode through a slope sliding block assembly. 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, a pressing part and a sliding part are additionally arranged to unlock the elastic piece, and the folding knife main shaft unlocking mechanism is simple in structure and convenient to use. A user can unlock the knife head only by pushing the sliding part when the knife head is completely unfolded, the blade 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 knife unlocking mechanism and a folding knife, belonging to the technical field of folding knives. Background Art

[0002] A folding knife is a portable tool whose blade folds into the handle. Its design makes the knife safer and more portable when not in use. A wire lock is one of the most common locking mechanisms used in folding knives, locking the blade with a spring-loaded steel plate. However, if the steel plate is of poor quality or improperly designed, it can wear out prematurely and fail to securely lock the blade. The blade can accidentally fold during use, posing a serious safety hazard, especially when high pressure is applied. Therefore, to ensure the safety of folding knife locking, existing folding knives often forgo wire locks and use spindle unlocking mechanisms. Publication No. CN220972448U, for example, discloses a spindle lock and safety folding knife. However, due to the frequent opening and closing of folding knives during use, the spindle is subjected to significant rotation and pressure, which can lead to loosening or wear of the spindle. This loose spindle can cause unstable opening and closing of the blade, resulting in blade shaking during use and increasing the risk of accidental injury. Furthermore, the folding knife's complex structure makes internal deformation or fracture difficult to detect, making production, installation, and maintenance difficult.

[0003] Therefore, it is urgent to propose a new folding knife unlocking mechanism and folding knife to solve the above technical problems. Utility Model Content

[0004] This utility model is developed to address the problems of existing folding knife thread locks that fail to securely lock the blade, while the spindle unlocking mechanism is complex and difficult to manufacture, install, and maintain. The following provides a brief overview of this utility model to provide a basic understanding of certain aspects of this utility model. It should be understood that this overview is not an exhaustive overview of the utility model. It is not intended to identify key or important aspects of this utility model, nor is it intended to limit the scope of this utility model.

[0005] The technical solution of this utility model:

[0006] Solution 1: A folding knife unlocking mechanism includes a front handle plate, a spring piece, a clamping part, and a sliding part. The front handle plate is provided with a spring piece, one side of the spring piece is a free end, one side of the clamping part is rotatably connected to the front handle plate through a rotating shaft, and the other end of the clamping part is pressed onto the outside of the free end. The sliding part is slidably installed on the front handle plate, and the sliding part and the clamping part are connected by a slope slider assembly.

[0007] Preferably, the slope slider assembly includes a slope chute and a slider, and the slider is connected to the inclined surface of the slope chute in a sliding fit.

[0008] Preferably, one side of the pressing portion is processed with a sloped sliding groove, and the slider is fixedly installed on the sliding portion.

[0009] Preferably, a sloped groove is machined on one side of the slider, and the slider is fixedly mounted on the pressing portion.

[0010] Preferably, a slide groove is processed on the front handle plate, and the sliding part is slidably arranged inside the slide groove.

[0011] Preferably, a spring is provided between the end of the sliding portion and the top side wall of the sliding groove.

[0012] Preferably, the other end of the pressing portion is press-fitted onto the outer side of the free end and fixedly connected to the free end.

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

[0014] Option 2: A folding knife is realized based on the folding knife unlocking mechanism described in Option 1. In addition to the folding knife unlocking mechanism, it also includes a blade head, a rear handle plate and a main shaft. The front handle plate and the bottom sides of the rear handle plate are fixedly connected, the blade head is clamped between the top sides of the front handle plate and the rear handle plate, and the bottom side of the blade head establishes a rotational connection with the front handle plate and the rear handle plate through the main shaft. The bottom of the blade head has a slot, and the free end of the spring is clamped in the slot.

[0015] The utility model has the following beneficial effects:

[0016] 1. This utility model uses a spring clip for locking, but also adds a pressing part and a sliding part to unlock the spring clip. When the blade is fully unfolded, the user can only unlock it by pushing the sliding part, preventing the blade from accidentally folding, thus improving the safety of the folding knife.

[0017] 2. This utility model uses one hand to push the sliding part, and the pressing part drives the spring to unlock. This is particularly convenient for scenes that require quick operation. One-handed operation reduces the number of operation steps, especially when one hand is occupied or a quick response is required, which can improve the operation efficiency.

[0018] 3. The structure of the utility model is relatively simple. The cutter head is directly locked by the spring, without a complicated mechanical connection structure. This simple design makes the utility model rarely fail during use and is easy to maintain.

[0019] 4. The design of the present invention is ingenious, and the parts composition is streamlined. The relatively small number of parts means fewer wear points and a stable structure. Therefore, even under frequent use, unlocking failure is not likely to occur, thereby enhancing reliability. At the same time, it is easy to produce and process, reducing processing difficulty and cost, and improving production efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the unlocking mechanism of a folding knife;

[0021] Figure 2 It is an exploded view of the unlocking mechanism of a folding knife;

[0022] Figure 3 This is a schematic diagram of the cooperation between the pressing part and the sliding part of the utility model;

[0023] Figure 4 This is a diagram of the ramp slider assembly of the utility model in use;

[0024] Figure 5 This is a schematic diagram of the cooperation between the spring and the slide groove of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the shrapnel of the utility model;

[0026] Figure 7 It is a three-dimensional image of a folding knife.

[0027] In the figure: 1-front handle plate, 2-spring, 3-pressing part, 4-sliding part, 5-ramp slider assembly, 6-spring, 7-cutter head, 8-rear handle plate, 9-spindle, 11-slide groove, 21-free end, 22-fixed end, 51-ramp slide groove, 52-slide block, 71-slot. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0029] The connections mentioned in this utility model are divided into fixed connections and detachable connections. The fixed connection refers to a non-detachable connection, including but not limited to conventional fixed connection methods such as hem connection, rivet connection, bonding connection, and welding connection. The detachable connection refers to but not limited to conventional detachable connection methods such as threaded connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly specified, it is assumed that at least one connection method can always be found among the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example, a welded connection is selected for a fixed connection, and a hinge connection is selected for a detachable connection.

[0030] Specific implementation method 1: Combination Figures 1-6Describing this embodiment, a folding knife unlocking mechanism of this embodiment includes a front handle plate 1, a spring piece 2, a clamping part 3, a sliding part 4 and a slope slider assembly 5. A spring piece 2 is provided on the front handle plate 1, one side of the spring piece 2 is a free end 21, one side of the clamping part 3 is rotatably connected to the front handle plate 1 through a rotating shaft, and the other end of the clamping part 3 is pressed onto the outside of the free end 21, the sliding part 4 is slidably installed on the front handle plate 1, and the sliding part 4 and the clamping part 3 are cooperatively connected through the slope slider assembly 5.

[0031] One side of the spring piece 2 is a free end 21 , and the other side is a fixed end 22 . The fixed end 22 is fixedly connected to the front handle plate 1 or integrally formed.

[0032] The front handle plate 1 is arranged below the blade 7 of the folding knife, or is directly hinged to the lower side of the blade 7. There is a card slot 71 on the blade 7. When the blade 7 needs to be locked, the sliding part 4 is pushed downward, and the top of the pressing part 3 presses the free end 21, so that the free end 21 of the spring 2 is clamped in the card slot 71 at the bottom end of the blade 7, realizing the locking function of limiting the rotation of the blade 7. When the folding knife needs to be unlocked, the sliding part 4 is pushed, and the sliding part 4 drives the pressing part 3 to flip with the rotating shaft as the rotation center through the slope slider assembly 5, so that the pressing part 3 rebounds away from the spring 2 and moves out of the card slot 71 at the bottom end of the blade 7, so that the blade 7 can rotate freely.

[0033] Specific implementation method 2: Combination Figures 1-6 To describe this embodiment, a folding knife unlocking mechanism of this embodiment is realized based on a folding knife unlocking mechanism described in the first specific embodiment. In this embodiment, a folding knife unlocking mechanism, the slope slider assembly 5 includes a slope slot 51 and a slider 52, and the slider 52 is connected to the inclined surface of the slope slot 51 in a sliding manner.

[0034] A sloped sliding groove 51 is machined on one side of the pressing portion 3 , and a sliding block 52 is fixedly mounted on the sliding portion 4 .

[0035] When the operator pushes the sliding part 4 upward with one hand, the sliding part 4 drives the slider 52 to slide synchronously in the slope groove 51. Due to the height difference of the inclined surface of the slope groove 51, the clamping part 3 is gradually turned outward with the rotating shaft as the rotation center. The clamping part 3 rebounds away from the spring piece 2 and moves out of the bottom end slot 71 of the cutter head 7, so that the cutter head 7 can rotate freely.

[0036] Similarly, in contrast to the above structure, the slope slider assembly 5 of this embodiment can also interchange the processing positions of the slope groove 51 and the slider 52, that is, the slope groove 51 is processed on one side of the slider 52, and the slider 52 is fixedly installed on the clamping part 3, and its working principle is the same as above.

[0037] Specific implementation method three: Combination Figures 1-6To describe this embodiment, a folding knife unlocking mechanism of this embodiment is realized based on a folding knife unlocking mechanism described in the second specific embodiment. A folding knife unlocking mechanism of this embodiment has a sliding groove 11 processed on the front handle plate 1, and the sliding part 4 is slidably arranged inside the sliding groove 11, and the sliding groove limits the sliding installation position of the sliding part 4 on the front handle plate 1.

[0038] A spring 6 is provided between the end of the sliding portion 4 and the top side wall of the slide groove 11. The setting of the spring 6 ensures that the sliding portion 4 can always remain in the reset state at the bottom of the slide groove 11 after the operator releases his hand, which is more convenient for one-handed operation and enhances the safety locking performance.

[0039] Specific implementation method four: Combination Figures 1-6 To explain this embodiment, a folding knife unlocking mechanism of this embodiment is realized by relying on a folding knife unlocking mechanism described in the specific embodiment one. The other end of the clamping part 3 is pressed onto the outside of the free end 21 and fixedly connected to the free end 21. The clamping part 3 assists the free end 21 in being snapped in and popped out. The purpose of such design is to not only rely on the elastic properties of the free end 21 of the shrapnel 2 itself to achieve snapping in and popping out, but also to avoid fatigue of the shrapnel 2 caused by long-term use, weakening or even deformation of the elastic ability of locking and resetting, resulting in the unlocking mechanism being stuck or even stuck and unable to realize the unlocking function, thereby extending the service life of the shrapnel 2.

[0040] Specific implementation method five: Combination Figure 1-Figure 7 Explanation of this embodiment: A folding knife of this embodiment is realized by relying on a folding knife unlocking mechanism described in any one of the specific embodiments one to four. In addition to the folding knife unlocking mechanism, it also includes a cutter head 7, a rear handle plate 8 and a spindle 9. The bottom sides of the front handle plate 1 and the rear handle plate 8 are fixedly connected by a connecting block, so that a chamber for accommodating the folding and retraction of the cutter head 7 is provided between the front handle plate 1 and the rear handle plate 8. The cutter head 7 is clamped between the top sides of the front handle plate 1 and the rear handle plate 8, and the bottom side of the cutter head 7 is fixedly connected by the spindle. 9 establishes a rotational connection with the front handle plate 1 and the rear handle plate 8, that is, when the cutter head 7 is retracted by rotating along the main axis 9, the cutter head 7 can be set in the chamber, and the bottom of the cutter head 7 has a card slot 71, and the cutter head 7 is locked and unlocked by cooperating with the bottom card slot 71 and the folding knife unlocking mechanism, that is, when locked, the free end 21 of the spring piece 2 of the folding knife unlocking mechanism is clamped in the card slot 71, and the cutter head 7 is in a locked state. When unlocked, the free end 21 of the spring piece 2 pops out of the card slot 71, and the cutter head 7 can rotate freely along the main axis 9.

[0041] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutations and combinations. Therefore, the present invention will no longer describe the technical solutions after permutations and combinations one by one, but it should be understood that the technical solutions after permutations and combinations have been disclosed by the present invention.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A folding knife unlocking mechanism, characterized by: The invention comprises a front handle plate (1), a spring piece (2), a pressing part (3), a sliding part (4) and a slope slider assembly (5). The front handle plate (1) is provided with a spring piece (2), one side of the spring piece (2) is a free end (21), one side of the pressing part (3) is rotatably connected to the front handle plate (1) through a rotating shaft, the other end of the pressing part (3) is press-fitted to the outside of the free end (21), the sliding part (4) is slidably mounted on the front handle plate (1), and the sliding part (4) and the pressing part (3) are cooperatively connected through the slope slider assembly (5).

2. The folding knife unlocking mechanism according to claim 1, characterized in that: The slope slider assembly (5) comprises a slope chute (51) and a slider (52), wherein the slider (52) is connected to the inclined surface of the slope chute (51) in a sliding manner.

3. The folding knife unlocking mechanism according to claim 2, characterized in that: A sloped sliding groove (51) is processed on one side of the pressing portion (3), and a sliding block (52) is fixedly mounted on the sliding portion (4).

4. The folding knife unlocking mechanism according to claim 2, characterized in that: A sloped slide groove (51) is processed on one side of the slider (52), and the slider (52) is fixedly mounted on the pressing portion (3).

5. The folding knife unlocking mechanism according to claim 1, characterized in that: A sliding groove (11) is machined on the front handle plate (1), and the sliding portion (4) is slidably arranged inside the sliding groove (11).

6. The folding knife unlocking mechanism according to claim 5, characterized in that: A spring (6) is provided between the end of the sliding portion (4) and the top side wall of the sliding groove (11).

7. The folding knife unlocking mechanism according to claim 1, characterized in that: The other end of the pressing portion (3) is press-fitted onto the outside of the free end (21) and is fixedly connected to the free end (21).

8. 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.

9. A folding knife, implemented by relying on the folding knife unlocking mechanism according to any one of claims 1 to 8, characterized in that: In addition to the folding knife unlocking mechanism, it also includes a cutter head (7), a rear handle plate (8) and a main shaft (9), wherein the bottom sides of the front handle plate (1) and the rear handle plate (8) are fixedly connected, the cutter head (7) is clamped between the top sides of the front handle plate (1) and the rear handle plate (8), and the bottom side of the cutter head (7) is connected to the front handle plate (1) and the rear handle plate (8) through the main shaft (9), and the bottom of the cutter head (7) has a slot (71), and the free end (21) of the spring piece (2) is mounted in the slot (71).

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