CN217414085U

CN217414085U - Folding cutter with ejector rod locking mechanism

Info

Publication number: CN217414085U
Application number: CN202221414833.9U
Authority: CN
Inventors: 万仙; 葛东升; 马吉山; 戴娟
Original assignee: Nanjing Lafada Industrial Design Co ltd
Current assignee: Nanjing Lafada Industrial Design Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-09-13
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a folding cutter with ejector pin locking mechanical system, including blade, upper handle of a knife and lower handle of a knife, the both ends and the centre of upper handle of a knife and lower handle of a knife all are provided with first screw, the same end of upper handle of a knife and lower handle of a knife is connected with the blade through the second screw, the one end of blade and be close to second screw department and be provided with first connecting pin, be provided with the bending connecting rod on the first connecting pin and be located between upper handle of a knife and the lower handle of a knife, the both ends of bending connecting rod are provided with fifth connecting hole and sixth connecting hole; a folding cutter with ejector pin locking mechanical system, can drive the blade and connect the ejector pin through the bending connecting rod and rotate, but the folding cutter that opens and shuts of one hand, it is more convenient to open and close, and avoids the blade to take place not hard up or rotate when using, all possesses self-locking function when opening and close with connecting ejector pin matched with under the circumstances of bending connecting rod.

Description

Folding cutter with ejector rod locking mechanism

Technical Field

The utility model relates to a folding cutter field, in particular to folding cutter with ejector pin locking mechanical system.

Background

Most of the existing folding cutters comprise blades and a cutter handle with a certain cavity, the blades are movably connected to the cutter handle through hinge shafts, the blades can be folded into the cavity of the cutter handle manually, the cutters can be conveniently carried by folding the cutters, and people are not easily injured;

however, the existing folding knife has certain disadvantages, and when the knife is opened and closed, the knife only depends on the friction force between the blade and the knife handle to prevent the blade from rotating, so that the blade is easy to loosen when opened and closed, people are easy to be injured by mistake, the knife is lack of a self-locking structure, and the blade and the knife handle are required to be separated by two hands when the knife is opened, which is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a folding cutter with ejector pin locking mechanical system, can effectively solve the technical problem who proposes in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a folding cutter with a mandril locking mechanism comprises a blade, an upper cutter handle and a lower cutter handle, wherein first screws are arranged at two ends and the middle of the upper cutter handle and the lower cutter handle, the same end of the upper cutter handle and the lower cutter handle is connected with the blade through second screws, a first connecting pin is arranged at one end of the blade close to the second screws, a bent connecting rod is arranged on the first connecting pin and between the upper cutter handle and the lower cutter handle, a fifth connecting hole and a sixth connecting hole are arranged at two ends of the bent connecting rod, a third screw is arranged at the middle part of the upper cutter handle and the lower cutter handle, the third screw is connected with a connecting mandril, a second connecting hole is arranged at one end of the connecting mandril, a second connecting pin is arranged in the middle of the connecting mandril, the second connecting pin of the connecting mandril is matched with the sixth connecting hole of the bent connecting rod, a second locking groove and a second unlocking groove are respectively arranged at two sides of the sixth connecting hole, and the second connecting pin is in sliding connection with the second locking groove and the second unlocking groove of the sixth connecting hole.

As a preferred technical solution of the present invention, the end of the blade located near the second screw is provided with a first tool stopping groove, a first locking groove, a first unlocking groove and a second tool stopping groove.

As an optimal technical scheme of the utility model, the tip of blade is located and has seted up first connecting hole between first sword groove, first locking groove, first unlocking groove and the second sword groove, the third connecting hole has all been seted up to last handle of a knife and the corresponding position of lower handle of a knife, the second screw runs through the inside of third connecting hole and first connecting hole.

As an optimal technical scheme of the utility model, the tip of connecting the ejector pin is provided with the ejector pin locking surface, ejector pin locking surface and first locking groove and the equal sliding connection in first unlocking groove, first only sword groove and second only sword groove cooperate with the first screw that is close to the blade.

As an optimal technical scheme of the utility model, the curved connecting rod still includes that semicircle section, straight-bar section and connecting rod release the locking plate, connecting rod release the locking plate and set up in the middle of the semicircle section, the fifth connecting hole of curved connecting rod rotates with the first connecting pin of blade to be connected.

As an optimal technical scheme of the utility model, go up the centre of handle of a knife and lower handle of a knife and be close to third screw department and seted up the fourth connecting hole, the second connecting hole of connecting the ejector pin is connected with the fourth connecting hole through the third screw.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses in be provided with the bending connecting rod and connect the ejector pin, through the bending connecting rod and the connection ejector pin that are provided with between handle of a knife and blade, can stir the connecting rod when opening the cutter and separate the locking plate, can drive the blade and connect the ejector pin through the bending connecting rod and rotate, but the folding cutter of singlehanded opening and shutting, the ejector pin locking face of connecting the ejector pin pulls out first locking groove, can open the blade this moment, when using the cutter, through being located the blade between the handle of a knife and connecting ejector pin looks block, it is more convenient to open and close, and avoid when using the blade to take place to become flexible or rotate, contact respectively through first screw and first only sword groove and second only sword groove, the bending connecting rod with connect under the ejector pin matched with condition and open and close the time and all possess self-locking function.

Drawings

Fig. 1 is an exploded view of the overall structure of the present invention;

fig. 2 is a schematic view of the blade structure of the present invention;

FIG. 3 is a schematic view of the connecting rod structure of the present invention;

FIG. 4 is a schematic view of the structure of the upper knife handle of the present invention;

FIG. 5 is a schematic view of the lower tool holder structure of the present invention;

FIG. 6 is a schematic view of the structure of the curved connecting rod of the present invention;

fig. 7 is a first structural diagram illustrating a closed state of the blade according to the present invention;

fig. 8 is an exploded view of the closed blade structure of the present invention;

fig. 9 is a first structural diagram of the open/close state of the blade of the present invention;

fig. 10 is a structural diagram of the open/close state of the blade of the present invention;

fig. 11 is a third schematic structural view of the open/close state of the blade of the present invention;

fig. 12 is a fourth structural diagram illustrating the open/close state of the blades of the present invention;

fig. 13 is a first structural view illustrating the blade in the unlocked and locked state according to the present invention;

fig. 14 is a structural schematic diagram of the blade opening and locking state according to the present invention;

fig. 15 is a third structural view of the blade in the unlocked and locked state according to the present invention;

fig. 16 is a first schematic view of a blade unlocking prevention steady-state structure of the present invention;

fig. 17 is a schematic view of a blade anti-unlocking steady-state structure of the present invention.

In the figure: 1. a blade; 2. a curved connecting rod; 3. an upper knife handle; 4. connecting a top rod; 5. a lower knife handle; 6. a first screw; 7. a first tool stopping groove; 8. a first connection hole; 9. a first locking groove; 10. a first unlocking slot; 11. a second tool stopping groove; 12. a first connecting pin; 13. a mandril locking surface; 14. a second connecting pin; 15. a second connection hole; 16. a third connection hole; 17. a fourth connection hole; 18. a fifth connecting hole; 19. connecting rod unlocking sheet; 20. a second locking slot; 21. a sixth connecting hole; 22. a second unlocking slot; 23. a second screw; 24. and a third screw.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-17, a folding cutter with a mandril locking mechanism comprises a blade 1, an upper cutter handle 3 and a lower cutter handle 5, wherein both ends and the middle of the upper cutter handle 3 and the lower cutter handle 5 are respectively provided with a first screw 6, the same end of the upper cutter handle 3 and the lower cutter handle 5 is connected with the blade 1 through a second screw 23, one end of the blade 1 is provided with a first connecting pin 12 near the second screw 23, a bent connecting rod 2 is arranged on the first connecting pin 12 and between the upper cutter handle 3 and the lower cutter handle 5, both ends of the bent connecting rod 2 are provided with a fifth connecting hole 18 and a sixth connecting hole 21, the middle part of the upper cutter handle 3 and the lower cutter handle 5 is provided with a third screw 24, the third screw 24 is connected with a connecting mandril 4, one end of the connecting mandril 4 is provided with a second connecting hole 15, the middle of the connecting mandril 4 is provided with a second connecting pin 14, the second connecting pin 14 of the connecting mandril 4 is matched with the sixth connecting hole 21 of the bent connecting rod 2, the second locking groove 20 and the second unlocking groove 22 are respectively opened at both sides of the sixth connecting hole 21, and the second connecting pin 14 is slidably connected with both the second locking groove 20 and the second unlocking groove 22 of the sixth connecting hole 21.

In the present embodiment, the end of the blade 1 located at the end close to the second screw 23 is provided with a first tool stopping groove 7, a first locking groove 9, a first unlocking groove 10 and a second tool stopping groove 11; a first connecting hole 8 is formed in the end part of the blade 1, which is positioned among the first knife stopping groove 7, the first locking groove 9, the first unlocking groove 10 and the second knife stopping groove 11, third connecting holes 16 are formed in the corresponding positions of the upper knife handle 3 and the lower knife handle 5, and a second screw 23 penetrates through the third connecting holes 16 and the inner part of the first connecting hole 8; the end part of the connecting ejector rod 4 is provided with an ejector rod locking surface 13, the ejector rod locking surface 13 is in sliding connection with the first locking groove 9 and the first unlocking groove 10, the first tool stopping groove 7 and the second tool stopping groove 11 are matched with the first screw 6 close to the blade 1, the first screw 6 is in contact with the first tool stopping groove 7 and the second tool stopping groove 11 respectively, and the bent connecting rod 2 and the connecting ejector rod 4 are matched with each other, so that the self-locking function is realized during opening and closing.

In this embodiment, the curved connecting rod 2 still includes the semicircle section, locking plate 19 is separated to straight pole section and connecting rod, locking plate 19 is separated to the connecting rod sets up in the middle of the semicircle section, the fifth connecting hole 18 of curved connecting rod 2 rotates with the first connecting pin 12 of blade 1 and is connected, through promoting the connecting rod and separate locking plate 19, can drive blade 1 and connect ejector pin 4 through curved connecting rod 2 and rotate, but the folding cutter of singlehanded open and shut, first locking groove 9 is pulled out to the ejector pin locking face 13 of connecting ejector pin 4, can open blade 1 this moment, when using the cutter, through blade 1 that is located between the handle of a knife and the 4 looks block of connecting ejector pin, it is more convenient to open and close, and avoid blade 1 to take place to become flexible or rotate when using.

In addition, a fourth connecting hole 17 is formed between the upper tool shank 3 and the lower tool shank 5 and close to a third screw 24, and the second connecting hole 15 connected with the ejector rod 4 is connected with the fourth connecting hole 17 through the third screw 24.

It should be noted that when the second knife-stopping groove 11 needs to be unfolded from the upper knife handle 3 and the lower knife handle 5, the connecting rod unlocking piece 19 is only needed to be pulled, so that the second unlocking groove 22 can be used for driving the second knife-stopping groove 11 and the connecting push rod 4 to rotate, at this time, the blade 1 rotates around the second screw 23 between the first connecting hole 8 and the third connecting hole 16, the fifth connecting hole 18 of the bent connecting rod 2 rotates around the first connecting pin 12 while the blade 1 rotates, the second connecting hole 15 of the connecting push rod 4 rotates around the third screw 24 of the fourth connecting hole 17, the second unlocking groove 22 continues to rotate, at this time, the second connecting pin 14 on the connecting push rod 4 is driven to be embedded with the second knife-handle unlocking groove 22 of the sixth connecting hole 21 on the second unlocking groove 22, until the second knife-stopping groove 11 completely unfolds the first knife-stopping groove 7 on the second knife-stopping groove 11 and the first screw 6 at the end part of the upper knife handle 3 and the lower knife handle 5, at this time, the second connecting pin 14 connected to the ejector rod 4 is still engaged with the second unlocking groove 22 located at the sixth connecting hole 21 on the second unlocking groove 22, a natural tool needs to be held tightly, the connecting ejector rod 4 is located at the handle position of the handle at this time, the user's fingers will drive the first locking groove 9 facing the blade 1 to rotate, and finally the ejector rod locking surface 13 connected to the ejector rod 4 is engaged with the first locking groove 9, so as to further limit the rotation of the blade 1, when the tool needs to be unlocked, only the connecting rod unlocking plate 19 needs to be shifted, the ejector rod locking surface 13 connected to the ejector rod 4 is pulled out of the first locking groove 9, the blade 1 can be directly closed, when the back of the second tool stopping groove 11 is impacted, the second tool stopping groove 11 starts to rotate in the closing direction, at this time, the ejector rod locking surface 13 connected to the ejector rod 4 may be squeezed out of the first locking groove 9 of the second tool stopping groove 11, but the second tool stopping groove 11 is further provided with the first unlocking groove 10, at this time, the first unlocking groove 10 will be engaged with the ejector locking surface 13 of the connecting ejector 4, thereby preventing further rotation of the connecting ejector 4 and ensuring the stability of the cutter closing.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a folding cutter with ejector pin locking mechanical system which characterized in that: the novel cutter comprises a blade (1), an upper cutter handle (3) and a lower cutter handle (5), wherein first screws (6) are arranged at the two ends and the middle of the upper cutter handle (3) and the lower cutter handle (5), the same end of the upper cutter handle (3) and the lower cutter handle (5) is connected with the blade (1) through second screws (23), a first connecting pin (12) is arranged at one end of the blade (1) and close to the second screws (23), a bent connecting rod (2) is arranged on the first connecting pin (12) and between the upper cutter handle (3) and the lower cutter handle (5), fifth connecting holes (18) and sixth connecting holes (21) are formed at the two ends of the bent connecting rod (2), a third screw (24) is arranged at the middle part of the upper cutter handle (3) and the lower cutter handle (5), the third screw (24) is connected with a connecting ejector rod (4), and a second connecting hole (15) is formed at one end of the connecting ejector rod (4), the centre of connecting ejector pin (4) is provided with second connecting pin (14), second connecting pin (14) of connecting ejector pin (4) cooperate with sixth connecting hole (21) of curved connecting rod (2), second locking groove (20) and second unlocking groove (22) have been seted up respectively to the both sides of sixth connecting hole (21), and second connecting pin (14) and the equal sliding connection in second locking groove (20) and second unlocking groove (22) of sixth connecting hole (21).

2. The folding tool with ejector pin locking mechanism of claim 1, wherein: one end of the end part of the blade (1) close to the second screw (23) is provided with a first tool stopping groove (7), a first locking groove (9), a first unlocking groove (10) and a second tool stopping groove (11).

3. The folding tool with ejector locking mechanism of claim 2, wherein: the utility model discloses a cutter handle, including blade (1), first sword groove (7), first locking groove (9), first unlocking groove (10) and second sword groove (11), the tip of blade (1) is located and has seted up first connecting hole (8) between first sword groove (7), first locking groove (9), first unlocking groove (10) and the second sword groove (11), third connecting hole (16) have all been seted up with lower handle of a knife (5) corresponding position to last handle of a knife (3), second screw (23) run through the inside of third connecting hole (16) and first connecting hole (8).

4. The folding knife with ejector pin locking mechanism of claim 2, characterized in that: the end part of the connecting ejector rod (4) is provided with an ejector rod locking surface (13), the ejector rod locking surface (13) is in sliding connection with the first locking groove (9) and the first unlocking groove (10), and the first tool stopping groove (7) and the second tool stopping groove (11) are matched with a first screw (6) close to the blade (1).

5. The folding tool with ejector pin locking mechanism of claim 1, wherein: bent connecting rod (2) still include semi-circular arc section, straight-bar section and connecting rod and separate locking plate (19), the connecting rod separates locking plate (19) and sets up in the middle of the semi-circular section, fifth connecting hole (18) of bent connecting rod (2) are connected with first connecting pin (12) rotation of blade (1).

6. The folding tool with ejector locking mechanism of claim 1, wherein: a fourth connecting hole (17) is formed in the middle of the upper knife handle (3) and the lower knife handle (5) and close to the third screw (24), and a second connecting hole (15) of the connecting ejector rod (4) is connected with the fourth connecting hole (17) through the third screw (24).