CN214924610U - Folding cutter with variable locking angle - Google Patents

Abstract

The utility model relates to the field of folding tools, in particular to a folding tool with variable locking angle, a back bone, a lower tool handle and an upper tool handle are assembled by matching bolts and internal thread positioning pins to form a tool handle mechanism, and a blade is assembled with the tool handle mechanism through a main shaft and a main shaft nut to form a tool main body; the tool stopping column is arranged at the front end of the tool holder mechanism through a universal nut; the rocker and handle connecting hole and the handle and locking rocker connecting hole are assembled and connected with a universal nut through connecting bolts; the lower locking connecting rod, a connecting rod and locking hook connecting hole on the upper locking connecting rod and a locking hook and a connecting rod connecting hole on a locking hook are in assembly connection with the universal nut through connecting bolts; the utility model discloses can be safe fold cutter multi-angle locking in the cutter use to improve the general nature of folding cutter and the work efficiency in different environment.

Description

Folding cutter with variable locking angle

Technical Field

The utility model relates to a folding cutter field, specific folding cutter of variable locking angle that says so.

Background

In the field of cutter design, different working environments require different angles of a cutting edge and a cutter handle, and the cutting is facilitated when the angle of the cutting edge and the cutter handle is 180 degrees, such as a fruit knife; when the angle between the blade and the knife handle is 130-160 degrees, the chopping is facilitated, such as a hilt bending knife; the angle between the blade and the handle is 90 degrees, which is beneficial to harvest, such as a sickle. In the field of folding cutters, the cutters are usually provided with only one locking angle after being opened and closed, and sometimes the locking angle is not suitable for the current working environment, so that the problems of low working efficiency and the like are easily caused.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model provides a folding cutter of variable locking angle.

The utility model provides a technical scheme that its technical problem adopted is: a folding cutter with a variable locking angle comprises a back bone, a locking rocker, an internal thread positioning pin, a lower cutter handle, a universal nut, a bolt, a main shaft, a lower locking connecting rod, a cutter stopping column, a locking hook, a blade, an upper locking connecting rod, an upper cutter handle and a main shaft nut, wherein the back bone, the lower cutter handle and the upper cutter handle are assembled by the bolt and the internal thread positioning pin in a matching manner to form a cutter handle mechanism, and a first cutter stopping bolt groove, a second cutter stopping bolt groove, a first cutter stopping bolt hole and a second cutter stopping bolt hole are sequentially arranged at the front end of the cutter handle mechanism; one end of the blade is sequentially provided with an outer blade stopping groove, a first blade locking groove, a second blade locking groove, a third blade locking groove, a closed blade locking groove and an inner blade stopping groove, and the blade is assembled with the tool holder mechanism through a main shaft and a main shaft nut to form a tool main body; the tool stopping column is arranged at the front end of the tool holder mechanism through a universal nut; one end of the locking rocker is provided with a rocker and handle connecting hole, the other end of the locking rocker is provided with a rocker and connecting rod connecting hole, the handle mechanism is provided with a handle and locking rocker connecting hole, one ends of the lower locking connecting rod and the upper locking connecting rod are both provided with a connecting rod and locking hook connecting hole, the other ends of the lower locking connecting rod and the upper locking connecting rod are provided with a connecting rod and rocker connecting hole, and the rocker and handle connecting hole and the handle and locking rocker connecting hole are assembled and connected with a universal nut through connecting bolts; the lower locking connecting rod, the connecting rod and the locking hook connecting hole on the upper locking connecting rod, and the locking hook and the connecting rod connecting hole on the locking hook are in assembly connection with the universal nut through connecting bolts, and the locking hook on the locking hook is in assembly connection with the handle connecting hole and the handle and locking hook connecting hole on the handle mechanism through connecting bolts and the universal nut.

Further, a spindle bolt limiting groove is formed in the spindle, and a tool shank and a spindle bolt limiting surface which are in limiting clamping connection with the spindle bolt limiting groove are arranged on the lower tool shank.

Furthermore, the connecting bolt is provided with a connecting bolt locking groove, the upper knife handle is provided with a knife handle and a connecting bolt limiting surface, and the upper locking connecting rod is provided with a connecting rod and a connecting bolt limiting surface.

Furthermore, a spring is connected between the locking hook and the handle mechanism, the spring is connected with the locking hook on the locking hook and the spring connecting hole through the connection part of the spring and the locking hook, and is connected with the handle on the handle mechanism and the spring connecting hole through the connection part of the spring and the handle.

Furthermore, a first cutter stopping bolt storage hole and a second cutter stopping bolt storage hole are formed in the cutter handle mechanism, and a cutter stopping bolt and a universal nut are stored in the first cutter stopping bolt storage hole and the second cutter stopping bolt storage hole.

The utility model has the advantages that:

(1) a folding cutter of variable locking angle, can be safe in the cutter use fold cutter multi-angle locking to improve folding cutter's general use and the work efficiency in different environment.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of a variable locking angle folding tool provided by the present invention;

FIG. 2 is a front view of the overall structure of a variable locking angle folding tool provided by the present invention;

fig. 3 is a top view of the overall structure of a variable locking angle folding tool provided by the present invention;

fig. 4 is a schematic view of a locking structure of a blade dead point back lock of a folding tool with a variable locking angle according to the present invention;

fig. 5 is a schematic view of a locking structure of a blade dead point back lock cooperating with a knife stopping bolt of the folding knife with a variable locking angle provided by the present invention;

FIG. 6 is a schematic view showing a multi-angle locking structure of a back lock of a blade dead point and a knife-stopping bolt of a folding knife with a variable locking angle according to the present invention;

FIG. 7 is a schematic diagram of a multi-angle locking structure of a back lock of a blade dead point and a knife-stopping bolt of a folding knife with a variable locking angle according to the present invention;

FIG. 8 is a third schematic view of a multi-angle locking structure of a back lock of a blade dead point and a knife-stopping bolt of the folding knife with a variable locking angle according to the present invention;

FIG. 9 is a schematic view of the blade closing locking of a variable locking angle folding knife provided by the present invention;

fig. 10 is a schematic view showing a blade fitting dead bolt close locking of a variable locking angle folding tool according to the present invention;

fig. 11 is a schematic view illustrating a blade fitting dead bolt closed locking of a folding tool with a variable locking angle according to the present invention;

FIG. 12 is a schematic structural view of an upper tool shank of a variable locking angle folding tool provided by the present invention;

fig. 13 is a schematic view of a blade structure of a variable locking angle folding tool according to the present invention;

fig. 14 is a schematic view of a locking hook structure of a variable locking angle folding tool according to the present invention;

fig. 15 is a schematic structural view of a locking rocker of a folding knife with a variable locking angle provided by the present invention;

fig. 16 is a schematic view of an upper locking link structure of a variable locking angle folding tool according to the present invention;

fig. 17 is a schematic diagram of a spring structure of a variable locking angle folding tool according to the present invention;

fig. 18 is a schematic view of a locking bolt structure of a variable locking angle folding tool according to the present invention;

FIG. 19 is a schematic view of a lower locking link of a variable locking angle folding tool according to the present invention;

fig. 20 is a schematic view of a lower handle structure of a variable locking angle folding tool according to the present invention;

fig. 21 is a schematic view of a spindle bolt structure of a variable locking angle folding tool according to the present invention;

fig. 22 is a schematic view illustrating an unlocked state of a variable locking angle folding blade according to the present invention;

in the figure: 1. a dorsal bone; 2. locking the rocker; 3. an internal thread positioning pin; 4. a lower knife handle; 5. a universal nut; 6. a bolt; 7. a main shaft; 8. a spring; 9. a lower locking link; 10. a tool stopping post; 11. a locking hook; 12. a blade; 13. an upper locking link; 14. an upper knife handle; 15. a connecting bolt; 16. a cutter stopping bolt; 17. a first tool stopping bolt groove of the tool handle; 18. a second tool stopping bolt groove of the tool handle; 19. a first tool stopping bolt hole of the tool handle; 20. a second tool stopping bolt hole of the tool handle; 21. the knife handle is connected with the locking hook through a connecting hole; 22. the knife handle is connected with the spring connecting hole; 23. the knife handle is connected with the locking rocker through a connecting hole; 24. a cutter stopping bolt storage hole I; 25. a second cutter stop bolt storage hole; 26. a blade outer tool stopping groove; 27. a first blade locking slot; 28. an insert second locking slot; 29. a third blade locking slot; 30. the blade closes the locking groove; 31. a blade inner stopping knife groove; 32. the locking hook is connected with the connecting rod connecting hole; 33. the locking hook is connected with the spring connecting hole; 34. the locking hook is connected with the knife handle connecting hole; 35. a locking hook locking surface; 36. the inner knife stop surface of the locking hook; 37. the rocker is connected with the connecting rod through a connecting hole; 38. the rocker is connected with the knife handle through a connecting hole; 39. a concave surface is formed in the rocker; 40. the connecting rod is connected with the locking hook connecting hole; 41. the connecting rod is connected with the rocker connecting hole; 42. the spring is connected with the locking hook; 43. the joint of the spring and the knife handle; 44. connecting bolt locking grooves; 45. the connecting rod and the connecting bolt limiting surface; 46. the cutter handle and the connecting bolt limiting surface; 47. the tool shank and the main shaft bolt limiting surface; 48. a main shaft bolt limiting groove; 49. a spindle nut.

Detailed Description

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

As shown in fig. 1-22, the folding cutter with variable locking angle of the present invention comprises a back frame 1, a locking rocker 2, an internal thread positioning pin 3, a lower handle 4, a universal nut 5, a bolt 6, a spindle 7, a lower locking connecting rod 9, a knife stopping column 10, a locking hook 11, a blade 12, an upper locking connecting rod 13, an upper handle 14, and a spindle nut 49, wherein the back frame 1, the lower handle 4, and the upper handle 14 are assembled by the bolt 6 and the internal thread positioning pin 3 to form a handle mechanism, and a first handle stopping bolt groove 17, a second handle stopping bolt groove 18, a first handle stopping bolt hole 19, and a second handle stopping bolt hole 20 are sequentially disposed at the front end of the handle mechanism; one end of the blade 12 is sequentially provided with an outer blade stopping groove 26, a first blade locking groove 27, a second blade locking groove 28, a third blade locking groove 29, a closed blade locking groove 30 and an inner blade stopping groove 31, and the blade 12 is assembled with a tool holder mechanism through a spindle 7 and a spindle nut 49 to form a tool body; the tool stopping column 10 is arranged at the front end of the tool holder mechanism through a universal nut 5; one end of the locking rocker 2 is provided with a rocker and handle connecting hole 38, the other end of the locking rocker 2 is provided with a rocker and connecting rod connecting hole 37, the handle mechanism is provided with a handle and locking rocker connecting hole 23, one ends of the lower locking connecting rod 9 and the upper locking connecting rod 13 are both provided with a connecting rod and locking hook connecting hole 40, the other end of the lower locking connecting rod and the upper locking connecting rod 13 is provided with a connecting rod and rocker connecting hole 41, and the rocker and handle connecting hole 38 and the handle and locking rocker connecting hole 23 are assembled and connected with the universal nut 5 through a connecting bolt 15; the lower locking connecting rod 9, the connecting rod and locking hook connecting hole 40 on the upper locking connecting rod 13 and the locking hook and connecting rod connecting hole 32 on the locking hook 11 are in assembly connection with the universal nut 5 through the connecting bolt 15, and the locking hook and handle connecting hole 34 on the locking hook 11 and the handle and locking hook connecting hole 21 on the handle mechanism are in assembly connection with the universal nut 5 through the connecting bolt 15.

The back bone 1, the lower tool shank 4 and the upper tool shank 14 are assembled into a whole after the bolt 6 and the internal thread positioning pin 3 are assembled in a matched mode, and as shown in the figures 1, 2 and 3, the back bone 1, the lower tool shank 4 and the upper tool shank 14 are assembled. The spindle 7 is assembled with the lower tool shank 4, the blade 12, the upper tool shank 14 and the spindle nut 49 to form a structure in which the blade 12 can rotate around the spindle 7, wherein a spindle bolt limiting groove 48 on the spindle 7 is matched with the tool shank and the spindle bolt limiting surface 47 on the tool shank to limit the rotation of the spindle 7 and prevent the spindle 7 from loosening, as shown in fig. 1, 2 and 3. The knife stopping column 10 is matched with the back bone 1, the lower knife handle 4 and the upper knife handle 14, and meanwhile, threads are arranged at the upper end and the lower end and are matched with the universal screw cap 5, so that the excircle is in contact with the outer knife stopping groove 26 of the blade when the blade is opened by 180 degrees, and the opening and closing angle of the blade is limited, as shown in the figure five.

The rocker and handle connecting hole 38 of the locking rocker 2, the lower handle 4, and the handle and locking rocker connecting hole 23 on the upper handle 14 are assembled with the universal nut 5 through the connecting bolt 15, wherein the connecting bolt locking groove 44 on the connecting bolt 15 is matched with the handle and connecting bolt limiting surface 46 on the upper handle 14 for limiting, and the connecting bolt 15 is prevented from loosening.

The rocker and connecting rod connecting hole 37 of the locking rocker 2, the lower locking connecting rod 9 and the connecting rod and rocker connecting hole 41 on the upper locking connecting rod 13 are assembled with the universal nut 5 through the connecting bolt 15, wherein the connecting bolt locking groove 44 on the connecting bolt 15 is matched with the connecting rod and connecting bolt limiting surface 45 on the upper locking connecting rod 13 for limiting, the connecting bolt 15 is prevented from loosening, and the inner side of the locking rocker 2 is provided with a rocker inner concave surface 39.

The lower locking connecting rod 9, the connecting rod and locking hook connecting hole 40 on the upper locking connecting rod 13 and the locking hook and connecting rod connecting hole 32 on the locking hook 11 are assembled with the universal nut 5 through the connecting bolt 15, wherein the connecting bolt locking groove 44 on the connecting bolt 15 is matched with the connecting rod and connecting bolt limiting surface 45 on the upper locking connecting rod 13 for limiting, and the connecting bolt 15 is prevented from loosening.

The locking hook and handle connecting hole 34 on the locking hook 11, the lower tool handle 4 and the handle and locking hook connecting hole 21 on the upper tool handle 14 are assembled with the universal nut 5 through the connecting bolt 15, wherein the connecting bolt locking groove 44 on the connecting bolt 15 is matched with the handle and connecting bolt limiting surface 46 on the upper tool handle 14 for limitation, and the connecting bolt 15 is prevented from being loosened.

The lower knife handle 4, the upper knife handle 14, the locking rocker 2, the lower locking connecting rod 9, the upper locking connecting rod 13 and the locking hook 11 form a four-bar structure, when the opening angle of the blade 12 is 180 degrees, the locking hook locking surface 35 of the locking hook 11 is matched with the blade outer knife stopping groove 26 on the blade 12 to hook the blade outer knife stopping groove 26, and the blade is prevented from being unlocked. At the moment, the locking rocker 2, the lower locking connecting rod 9, the upper locking connecting rod 13 and the locking hook on the locking hook 11 and the connecting rod connecting hole 32 are positioned on the same straight line, and the structure is positioned at the dead point position of the four-connecting-rod, so that the locking hook 11 can be effectively prevented from rotating anticlockwise around the locking hook and the connecting hole 34 of the cutter handle when the blade 12 works, and the locking surface 35 of the locking hook is prevented from being matched with and loosened from the outer cutter stopping groove 26 of the blade. Meanwhile, the locking surface 35 of the locking hook 11 is in contact with the knife stopping column 10, so that the force applied to the back of the blade 12 can be transmitted to the knife handle through the knife stopping column 10, and the knife handle has high structural stability, as shown in fig. 4.

Meanwhile, the diameters of the locking hook and connecting rod connecting hole 32 and the locking hook and handle connecting hole 34 on the locking hook 11 are slightly larger than the diameter (0.5 mm-0.1 mm) of the connecting bolt 15, so that the locking surface 35 of the locking hook can generate weak up-and-down displacement in a state that the locking surface is not matched and locked with the blade outer tool stopping groove 26 and the tool stopping column 10, and uniform locking force can be exerted on the outer tool stopping groove 26 and the tool stopping column 10 by the spring 8 after the locking surface 35 of the locking hook is embedded into the outer tool stopping groove 26 and the tool stopping column 10, and the locking firmness degree is ensured. When a user wants to unlock the blade 12 by the locking hook 11, the user just needs to use the thumb of the hand holding the knife handle to toggle the connecting bolt 15 connecting the rocker and link connecting hole 37 and the link and rocker connecting hole 41, so that the locking rocker 2, the lower locking link 9, the upper locking link 13, and the locking hook and link connecting hole 32 on the locking hook 11 in the four-bar linkage mechanism can be broken to be located at a dead point position in a straight line, and the locking hook 11 is separated from the contact with the outer knife stopping groove 26 and the knife stopping column 10, and is in an unlocked state, as shown in fig. 22. And then the wrist is slightly swung, and the cutter can be opened and closed by one hand.

Further, the cutter stability can be improved by mounting the cutter stop bolts 16 and the common nuts 5 in the first cutter stop bolt holes 19 of the lower cutter holder 4 and the second cutter stop bolt holes 20 of the upper cutter holder 14, and restricting the blades 12 at a plurality of points, as shown in fig. 5 and 6.

In the environment that the cutter needs to be split and chopped, the angles of the blade 12 and the lower cutter handle 4 and the upper cutter handle 14 can be adjusted, the cutter stopping bolts 16 and the universal nuts 5 are arranged on the first cutter stopping bolt grooves 17 of the cutter handles of the lower cutter handle 4 and the upper cutter handle 14 and the second cutter stopping bolt holes 20 of the cutter handles, meanwhile, the locking surfaces 35 of the locking hooks 11 are in contact with the first blade locking grooves 27 of the blade 12, the angles of the blade 12 are limited in multiple points, and the stability of the cutter is improved, as shown in fig. 7.

When the cutter is required to be harvested and chiseled, the angles of the blade 12 and the lower cutter handle 4 and the upper cutter handle 14 can be adjusted, the cutter stopping bolts 16 and the universal nuts 5 are mounted on the second cutter stopping bolt grooves 18 and the second cutter stopping bolt holes 20 of the lower cutter handle 4 and the upper cutter handle 14, meanwhile, the locking surfaces 35 of the locking hooks 11 are in contact with the second blade locking grooves 28 on the blade 12, the angles of the blade 12 are limited at multiple points, and the cutter stability is improved, as shown in fig. 8.

When the insert 12 is closed, the insert inside rest groove 31 of the insert 12 contacts the lock hook inside rest surface 36 of the lock hook 11, and the lock hook locking surface 35 of the lock hook 11 contacts the insert closing locking groove 30 of the insert 12, thereby restricting the insert, as shown in fig. 9. The safety of the blade closed state can also be ensured by mounting the cutter stopping bolt 16 and the universal nut 5 on the cutter handle first cutter stopping bolt hole 19 of the lower cutter handle 4 and the upper cutter handle 14 to assist in limiting the displacement angle of the cutter 12, as shown in fig. 10 and 11.

The spring 8 is connected with the locking hook on the locking hook 11 and the spring connecting hole 33 through a spring and locking hook connecting part 42, and is connected with the lower knife handle 4 and the knife handle of the upper knife handle 14 and the spring connecting hole 22 through a spring and knife handle connecting part 43, so that a force rotating around the knife handle and the locking hook connecting hole 21 in the anticlockwise direction is provided for the locking hook 11, and locking compensation is provided after the locking hook 11 is abraded.

When not in use, the two knife-stopping bolts 16 and the universal nut 5 can be stored in the knife-stopping bolt storage holes 24 and 25 of the lower knife handle 4 and the upper knife handle 14, so as to prevent loss.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description in the above embodiments and the specification is only for illustrating the principles of the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The folding cutter with the variable locking angle is characterized by comprising a back frame (1), a locking rocker (2), an internal thread positioning pin (3), a lower cutter handle (4), a universal nut (5), a bolt (6), a spindle (7), a lower locking connecting rod (9), a cutter stopping column (10), a locking hook (11), a blade (12), an upper locking connecting rod (13), an upper cutter handle (14) and a spindle nut (49), wherein the back frame (1), the lower cutter handle (4) and the upper cutter handle (14) are assembled by the bolt (6) and the internal thread positioning pin (3) in a matching mode to form a cutter handle mechanism, and a first cutter stopping bolt groove (17) of the cutter handle, a second cutter stopping bolt groove (18) of the cutter handle, a first cutter stopping bolt hole (19) of the cutter handle and a second cutter stopping bolt hole (20) of the cutter handle are sequentially arranged at the front end of the cutter handle mechanism; one end of the blade (12) is sequentially provided with an outer blade stopping tool groove (26), a first blade locking groove (27), a second blade locking groove (28), a third blade locking groove (29), a closed blade locking groove (30) and an inner blade stopping tool groove (31), and the blade (12) is assembled with the tool holder mechanism through a spindle (7) and a spindle nut (49) to form a tool body; the tool stopping column (10) is arranged at the front end of the tool holder mechanism through a universal nut (5); one end of the locking rocker (2) is provided with a rocker and handle connecting hole (38), the other end of the locking rocker (2) is provided with a rocker and connecting rod connecting hole (37), the handle mechanism is provided with a handle and locking rocker connecting hole (23), one ends of the lower locking connecting rod (9) and the upper locking connecting rod (13) are both provided with a connecting rod and locking hook connecting hole (40), the other ends of the lower locking connecting rod and the upper locking connecting rod are provided with a connecting rod and rocker connecting hole (41), and the rocker and handle connecting hole (38) and the handle and locking rocker connecting hole (23) are assembled and connected with a universal nut (5) through a connecting bolt (15); connecting rod and locking hook connecting hole (40) on lower locking connecting rod (9), upper locking connecting rod (13) and the locking hook on locking hook (11) and connecting rod connecting hole (32) pass through connecting bolt (15) and general nut (5) be assembled between/be connected between, locking hook and handle of a knife connecting hole (34) on locking hook (11) and handle of a knife mechanism on handle of a knife and locking hook connecting hole (21) pass through connecting bolt (15) and general nut (5) be assembled between/be connected between.

2. The folding tool with the variable locking angle of claim 1, characterized in that a spindle bolt limiting groove (48) is formed in the spindle (7), and a tool holder and spindle bolt limiting surface (47) which is in limiting clamping connection with the spindle bolt limiting groove (48) is formed in the lower tool holder (4).

3. The variable locking angle folding knife according to claim 1, characterized in that the connecting bolt (15) is provided with a connecting bolt locking groove (44), the upper knife handle (14) is provided with a knife handle and connecting bolt limiting surface (46), and the upper locking connecting rod (13) is provided with a connecting rod and connecting bolt limiting surface (45).

4. The folding knife with the variable locking angle according to claim 1, characterized in that a spring (8) is connected between the locking hook (11) and the knife handle mechanism, the spring (8) is connected with the locking hook on the locking hook (11) and the spring connecting hole (33) through a connecting part (42) of the spring and the locking hook, and is connected with the knife handle on the knife handle mechanism and the spring connecting hole (22) through a connecting part (43) of the spring and the knife handle.

5. The folding knife with the variable locking angle as claimed in claim 1, characterized in that the knife handle mechanism is provided with a first knife stopping bolt storage hole (24) and a second knife stopping bolt storage hole (25), and the first knife stopping bolt storage hole (24) and the second knife stopping bolt storage hole (25) both store the knife stopping bolt (16) and the universal nut (5).

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