CN220516869U - Push button shaft lock folding knife - Google Patents

Abstract

The utility model relates to the technical field of cutters, and particularly discloses a button shaft lock folding knife which comprises a blade, a knife handle, a button shaft lock structure and a power-assisted opening structure, wherein one end of the blade is a connecting end, the connecting end is rotatably connected with the front end of the knife handle through a rotating shaft, a limiting structure for limiting rotation of the blade is arranged between the connecting end and the knife handle, the power-assisted opening structure comprises a torsion spring, a first clamping groove and a second clamping groove which are respectively arranged on the connecting end and the knife handle, the torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively provided with a first clamping part and a second clamping part which can be in clamping fit with the first clamping groove and the second clamping groove. The button shaft lock folding knife is simple in structure, the knife blade is not required to be pushed by a user to realize the opening, the automatic opening can be realized, the opening is convenient and labor-saving, and meanwhile, the knife blade can be stably locked in an open or closed state by arranging the safety switch structure, so that the misoperation of an operator is effectively avoided.

Description

Push button shaft lock folding knife

Technical Field

The utility model relates to the technical field of cutters, in particular to a button shaft lock folding knife.

Background

Folding knives are widely used because of their small size and portability. In the prior art, the locking structure of the folding knife is usually in a wired lock form, a shaft lock form, a back lock form and the like. The structure of the wire lock form and the back lock form is simpler, but the processing precision requirement of the structure is higher, and the structure is unstable due to factors such as easy abrasion, and the locking is not in place and even the unlocking phenomenon is easy to cause; when the shaft lock folding knife is used, the single-hand quick opening can be realized, but the knife handle is generally provided with structures such as push-type knife nails or opening holes and grooves, and the knife handle is also provided with corresponding groove positions, so that the structure is complex, and a user still needs to push the knife blade to realize the opening during the opening, so that the opening operation is also complex.

Disclosure of Invention

The utility model aims to at least solve one of the above-mentioned technical problems, and provides a push button shaft lock folding knife which is simple in structure, can realize automatic opening without pushing a blade by a user, and is convenient and labor-saving to open.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a button axle lock folding knife, including the blade, the handle of a knife, button axle lock structure, and helping hand structure of opening the knife, the one end of blade is the link, the link is rotatable with the handle of a knife front end through the pivot, be provided with between link and the handle of a knife and carry out spacing limit structure to the rotation of blade, button lock structure can lock the blade in the state of opening completely or the state of closing completely, helping hand structure of opening includes torsion spring, and set up first draw-in groove and the second draw-in groove on link and handle of a knife respectively, torsion spring suit is in the pivot, and torsion spring's both ends are provided with first joint portion and the second joint portion that can joint cooperation first draw-in groove and second draw-in groove respectively, when the blade rotates to the state of closing completely, can torsion spring, so that torsion spring has the torsion that drives the blade and rotate to opening completely.

Preferably, the button shaft lock structure comprises a shaft body and a reset spring, the shaft body is in sliding fit with the handle, one end of the shaft body is provided with a pressing part, the other end of the shaft body is provided with a locking part, the locking part is elastically connected with the handle through the reset spring, an opening locking surface and a closing locking surface are arranged on the connecting end, under the action of the elastic force of the reset spring, the locking part can be abutted to the opening locking surface or the closing locking surface, so that the blade is locked in a completely opened state or a completely closed state, and the locking part is pressed, so that the locking part can be separated from the opening locking surface or the closing locking surface.

Preferably, the safety switch structure is further included, and the safety switch structure can close or open the shaft lock structure.

Preferably, the safety switch structure comprises a push block in sliding fit with the knife handle, a locking step is arranged on the shaft body, when the end part of the push block is in abutting fit with the upper surface of the locking step, the locking part can be kept in a state of being separated from the opening locking surface or the closing locking surface, and when the end part of the push block is in abutting fit with the lower surface of the locking step, the locking part can be kept in a state of being in abutting fit with the opening locking surface or the closing locking surface.

Preferably, the knife handle is provided with a guide groove in sliding fit with the push block.

Preferably, the side part of the push block is provided with a first positioning groove and a second positioning groove, and an elastic clamping block which can be clamped and matched with the first positioning groove and the second positioning groove is arranged on the groove wall of the guide groove.

Preferably, the bottom of the pushing block is provided with an empty-avoiding groove.

Preferably, the limiting structure comprises an opening stop surface and a closing stop surface which are arranged on the connecting part, and a first stop pin and a second stop pin which are arranged on the cutter handle, wherein the first stop pin and the second stop pin can be respectively abutted to be matched with the opening stop surface and the closing stop surface.

Preferably, two second clamping grooves are formed, and when the second clamping parts are clamped into different second clamping grooves, the blades rotate to a completely closed state, so that the torsion springs can have torsion with different sizes.

Preferably, the handle is provided with a clip.

The beneficial effects are that: according to the button shaft lock folding knife, the button shaft lock structure is arranged, the knife blade can be locked in the completely closed state or the completely opened state, meanwhile, the power-assisted opening structure is arranged, when the knife blade is rotated from the opened state to the completely closed state, the torsion spring can be driven to twist, so that the torsion spring has torsion for driving the knife blade to rotate to the completely opened state, and when the button shaft lock structure does not lock the knife blade, the knife blade can be driven to rotate under the torsion force of the torsion spring, and the knife blade can be rotated to the completely opened state.

Drawings

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic view of a push button shaft lock folding knife of the present utility model in a fully opened state;

FIG. 2 is a schematic view of the structure of the push button shaft lock folding knife in the fully closed state;

FIG. 3 is a schematic view of the internal structure of the push button shaft lock folding knife after the first handle body is detached in the fully opened state;

FIG. 4 is a schematic view of the internal structure of the push button shaft lock folding knife after the first handle body is disassembled in the completely closed state;

FIG. 5 is a schematic diagram of the cooperation structure of the push block and the elastic clamping block;

FIG. 6 is a schematic view of the structure of a blade;

FIG. 7 is a schematic diagram of a connection structure between the second handle body and the torsion spring;

FIG. 8 is a schematic structural view of a torsion spring;

fig. 9 is a schematic view of a push button lock shaft structure.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present, as well as being disposed not only in an intermediate position but also in both ends as far as they are within the scope defined by the intermediate position. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 9, a push button shaft lock folding knife comprises a knife blade 1, a knife handle 2, a push button shaft lock structure and a power-assisted opening structure, wherein one end of the knife blade 1 is a connecting end 3, the connecting end 3 is rotatably connected with the front end of the knife handle 2 through a rotating shaft 4, a limiting structure for limiting the rotation of the knife blade 1 is arranged between the connecting end 3 and the knife handle 2, when the knife blade 1 rotates forward to a fully opened state, the limiting structure can limit the forward rotation of the knife blade 1, when the knife blade 1 rotates reversely to a fully closed state, the limiting structure can limit the reverse rotation of the knife blade 1, and when the knife blade 1 rotates to the fully opened or fully closed state, the push button lock structure can act on the connecting end 3 to ensure that the knife blade 1 cannot rotate, thereby lock blade 1 in the state of fully opening or the state of fully closing, helping hand operation structure includes torsion spring 5, and set up first draw-in groove 6 and the second draw-in groove 7 on link 3 and handle of a knife 2 respectively, torsion spring 5 suit is on pivot 4, and torsion spring 5's both ends are provided with first joint portion 8 and the second joint portion 9 that can joint cooperation first draw-in groove 6 and second draw-in groove 7 respectively, when blade 1 rotates to the state of fully closing, because first joint portion 8 and second joint portion 9 joint cooperation first draw-in groove 6 and second draw-in groove 7 respectively, therefore torsion spring 5's both ends can not rotate relative pivot 4, but can twist reverse torsion spring 5's middle part, so that torsion spring 5 has the torsion that drives blade 1 and rotate to fully opening. Preferably, two second clamping grooves 7 can be provided, the second clamping portions 9 can be clamped into different second clamping grooves 7, when the second clamping portions 9 are clamped into different second clamping grooves 7, the blade 1 rotates to a completely closed state to enable the torsion springs 5 to have torsion with different sizes, so that the driving forces for driving the cutter to rotate are different, and therefore a user can clamp the second clamping portions 9 into different second clamping grooves 7, and adjustment of different automatic opening forces is achieved.

According to the button shaft lock folding knife, the button shaft lock structure is arranged, the knife blade 1 can be locked in the fully closed state or the fully opened state, meanwhile, the power-assisted opening structure is arranged, when the knife blade 1 is rotated from the opened state to the fully closed state, the torsion spring 5 can be driven to twist, so that the torsion spring 5 has torsion for driving the knife blade 1 to rotate to the fully opened state, when the button shaft lock structure does not lock the knife blade 1, the knife blade 1 can be driven to rotate under the torsion force of the torsion spring 5, and the knife blade 1 is enabled to rotate to the fully opened state, and therefore, compared with the prior art, the button shaft lock folding knife disclosed by the utility model does not need a user to push the knife blade 1 to realize opening, and can realize automatic opening, and is convenient and labor-saving to open.

Specifically, the handle 2 in the application may include a first handle body 27 and a second handle body 28 that are parallel to each other, the first handle body 27 and the second handle body 28 are detachably and fixedly connected through a screw, so as to facilitate disassembly and assembly, a spacer is fixedly installed between the first handle body 27 and the second handle body 28, so as to improve stability of a connection structure between the first handle body 27 and the second handle body 28, the button shaft lock structure may include a shaft body 10 and a return spring 11, the shaft body 10 is slidably matched with the handle 2, one end of the shaft body 10 is provided with a pressing part 12, the other end is provided with a locking part 13, the locking part 13 is elastically connected with the handle 2 through the return spring 11, an opening locking surface 14 and a closing locking surface 15 are provided on the connecting end 3, specifically, a mounting hole is provided on the first handle body 27, the second handle body 28 is provided with a counter bore, the locking part 13 penetrates through the mounting hole and extends into the counter bore, the pressing part 12 is in sliding fit with the mounting hole through elastic connection of the reset spring 11 and the bottom of the counter bore, when the pressing part 12 is not stressed, the locking part 13 can be ejected out of the counter bore under the elastic action of the reset spring 11, the locking part 13 can be abutted against the opening locking surface 14 or the closing locking surface 15 to limit the blade 1, the blade 1 can not rotate, the blade 1 is locked in a fully opened state or a fully closed state, and when the locking part 13 is pressed, the locking part 13 can be moved towards the counter bore, so that the locking part 13 can be separated from the opening locking surface 14 or the closing locking surface 15, and the blade 1 can rotate.

Further, the button lock axle folding knife of this application can also include the safety switch structure, and the safety switch structure can close or open axle lock structure, when the safety switch is closed the lock axle structure, can spacing to the axle body 10 for the axle body 10 can not press, when the safety switch is opened the lock axle structure, because the safety switch is no longer spacing to the axle body 10, therefore can press to the axle body 10.

Specifically, the safety switch structure may include a push block 16 slidably matched with the tool handle 2, a locking step 17 is disposed on the shaft body 10, and the mounting hole may be mounted on a flange, the flange may abut against the locking step 17, so as to limit the shaft body 10, when the reset spring 11 pushes the locking portion 13 up, the shaft body 10 is prevented from falling out of the mounting hole, the push block 16 may move towards or away from the shaft body 10, when the push block 16 moves towards the shaft body 10, the end portion of the push block 16 may abut against the upper surface of the locking step 17, the push block 16 may limit the shaft body 10, so that the reset spring 11 may not push the locking portion 13 out of the counter bore, so that the locking portion 13 may keep a state of separating from the opening locking surface 14 or closing the locking surface 15, and when the end portion of the push block 16 abuts against the lower surface of the locking step 17, the push block 16 may limit the shaft body 10, so that the pressing portion 12 may not be pressed down, so as to keep the locking portion 13 from being pushed out of the counter bore, and thus may keep the locking portion 13 in a state of opening or closing the locking surface 14.

Further, in order to improve the stability of the installation of the push block 16, the handle 2 may be provided with a guide groove 29 slidably engaged with the push block 16, and specifically, the surfaces of the first handle body 27 and the second handle body 28 facing each other are provided with guide grooves 29, and two opposite sides of the push block 16 are slidably engaged with the guide grooves 29.

Still further, the side portion of the push block 16 may be provided with a first positioning groove 18 and a second positioning groove 19, an elastic clamping block 20 capable of being clamped and matched with the first positioning groove 18 and the second positioning groove 19 is installed on a groove wall of a guiding groove 29 of the first handle 27, the elastic clamping block 20 comprises an installation seat, a spring and a round steel ball, the round steel ball is elastically connected with the installation seat through the spring, the installation seat can be fixedly installed on the surface of the first handle 27 through embedding, the elastic clamping block 20 protrudes out of the surface of the first handle 27, and is clamped and matched with the first positioning groove 18 or the second positioning groove 19 through the elastic clamping block 20, so that the push block 16 can be stably positioned, and when the elastic clamping block 20 is clamped and matched with the first clamping groove 6, the end portion of the push block 16 can be kept in a state of being abutted against the upper surface or the lower surface of the locking step 17, and when the elastic clamping block 20 is clamped and matched with the second clamping groove 7, the end portion of the push block 16 can be kept in a state of being separated from the upper surface or the lower surface of the locking step 17.

Furthermore, the bottom of the push block 16 may be provided with a clearance groove 21, so that when the blade 1 is completely closed, the edge of the blade 1 can be accommodated in the clearance groove 21, thereby effectively avoiding interference between the push block 16 and the blade 1.

In a specific embodiment of the present application, the limiting structure may include an opening stop surface 22 and a closing stop surface 23 disposed on the connecting portion, and a first stop pin 24 and a second stop pin 25 disposed on the handle 2, where the first stop pin 24 and the second stop pin 25 can respectively abut against and cooperate with the opening stop surface 22 and the closing stop surface 23, when the opening stop surface 22 abuts against and cooperates with the first stop pin 24, the forward rotation of the blade 1 can be limited, and the blade 1 is in a completely opened state, and when the closing stop surface 23 abuts against and cooperates with the second stop pin 25, the reverse rotation of the blade 1 can be limited, and the blade 1 is in a completely closed state.

In a preferred embodiment of the present application, the rotating shaft 4 may be embedded with a limiting piece, where the limiting piece can limit the movement of the connecting end 3 along the axial direction of the rotating shaft 4, so as to improve the stability of the blade 1 in the rotating process.

In another preferred embodiment of the present application, a clip 26 may be provided on the handle 2 to facilitate the carrying of the push button lock shaft folding knife of the present application. Specifically, the clip 26 may be detachably and fixedly mounted on the tool shank 2 by a screw, so as to facilitate the disassembly and assembly of the clip 26.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and any modifications or equivalent substitutions without departing from the spirit and scope of the present utility model should be covered in the scope of the technical solution of the present utility model.

Claims (10)

1. The utility model provides a button shaft lock folding knife, a serial communication port, including blade (1), handle of a knife (2), button shaft lock structure, and helping hand operation structure, the one end of blade (1) is link (3), link (3) are rotatable with handle of a knife (2) front end through pivot (4), be provided with between link (3) and handle of a knife (2) and carry out spacing limit structure to the rotation of blade (1), button lock structure can lock blade (1) in the state of fully opening or the state of fully closing, helping hand operation structure includes torsion spring (5), and first draw-in groove (6) and second draw-in groove (7) that set up respectively on link (3) and handle of a knife (2), torsion spring (5) suit is on pivot (4), and the both ends of torsion spring (5) are provided with first draw-in groove (6) and second draw-in groove (7) first joint portion (8) and second joint portion (9) respectively, when blade (1) rotate to the state of fully closing, torsion spring (5) can be driven to torsion spring (5) completely open.

2. The button shaft lock folding knife according to claim 1, wherein the button shaft lock structure comprises a shaft body (10) and a return spring (11), the shaft body (10) is in sliding fit with the knife handle (2), one end of the shaft body (10) is provided with a pressing part (12), the other end of the shaft body is provided with a locking part (13), the locking part (13) is elastically connected with the knife handle (2) through the return spring (11), the connecting end (3) is provided with an opening locking surface (14) and a closing locking surface (15), under the action of the elasticity of the return spring (11), the locking part (13) can be abutted against the opening locking surface (14) or the closing locking surface (15) so that the knife blade (1) is locked in a completely opened state or a completely closed state, and the locking part (13) is pressed so that the locking part (13) can be separated from the opening locking surface (14) or the closing locking surface (15).

3. The push button spindle lock folding knife of claim 2 further comprising a safety switch structure capable of closing or opening the spindle lock structure.

4. A push button shaft lock folding knife according to claim 3, characterized in that the safety switch structure comprises a push block (16) which is in sliding fit with the knife handle (2), a locking step (17) is arranged on the shaft body (10), the locking part (13) can be kept in a state of being separated from the opening locking surface (14) or the closing locking surface (15) when the end part of the push block (16) is in abutting fit with the upper surface of the locking step (17), and the locking part (13) can be kept in a state of being abutted against the opening locking surface (14) or the closing locking surface (15) when the end part of the push block (16) is in abutting fit with the lower surface of the locking step (17).

5. The push button shaft lock folding knife according to claim 4, wherein the knife handle (2) is provided with a guide groove (29) which is in sliding fit with the push block (16).

6. The push button shaft lock folding knife according to claim 5, wherein a first positioning groove (18) and a second positioning groove (19) are formed in the side portion of the push block (16), and an elastic clamping block (20) capable of being matched with the first positioning groove (18) and the second positioning groove (19) in a clamping manner is mounted on the groove wall of the guide groove (29).

7. The push button shaft lock folding knife according to claim 4, wherein the bottom of the push block (16) is provided with a clearance groove (21).

8. The push button shaft locking folding knife according to claim 1, wherein the limiting structure comprises an opening stop surface (22) and a closing stop surface (23) which are arranged on the connecting part, and a first stop pin (24) and a second stop pin (25) which are arranged on the knife handle (2), wherein the first stop pin (24) and the second stop pin (25) can be respectively abutted and matched with the opening stop surface (22) and the closing stop surface (23).

9. The push button shaft lock folding knife according to claim 1, wherein two second clamping grooves (7) are provided, and when the second clamping parts (9) are clamped into different second clamping grooves (7), the blade (1) rotates to a completely closed state, so that the torsion springs (5) can have different torsion forces.

10. A push button shaft lock folding knife according to claim 1, characterized in that the handle (2) is provided with a clip (26).