JP3186586U - Pliers with excellent cutting force - Google Patents

Abstract

The present invention provides a pliers having a function of easily cutting a thick line, which is difficult to cut with conventional pliers, and having an excellent cutting force.
A pliers 1 in which a crossing portion of a pair of gripping rods 2a and 2b is axially attached, and a gripper portion 5 and a blade portion 6 are formed on a distal end side of the axial attachment portion 4 is provided. A concave groove 7 having a pair of cutting blades is formed between the outer peripheral edge of the pivoting portion 4 and the blade portion 6 in a state where the holding portion 5 has a predetermined opening α and penetrates these grip bars 2a and 2b. When the gripping portions 2a and 2b are gripped and tightened in the direction in which the holding portion 5 is closed, the material to be cut inserted into the concave groove 7 is cut.
[Selection] Figure 2

Description

  The present invention relates to a pliers having a function of easily cutting a thick line, which is difficult to cut with conventional pliers, and having an excellent cutting force.

  Pliers are hand tools that can perform many tasks such as cutting, bending, pinching, pulling, and twisting copper wires and wires. The tip portion of the pliers is provided with a grip portion for gripping an object, and when the object is gripped, uneven lines are cut so as not to slip. In addition, although the wire part such as steel wire can be cut at the blade part, it has a structure in which the upper and lower blades are in contact with each other, so when cutting a thick line, a strong gripping force is required, and the blade is twisted (cut while twisting). Since a horizontal force is applied to the part, blade spills and rattling are caused.

  In order to prevent spilling of the pliers and increase the life of the blade, a pivot is formed at the center of the recess formed at one end of the first grip rod, and the second grip rod An insertion hole formed at the center of the recess formed on one end side is inserted to pivotally connect the first and second grip bars, and the tip end of the one end side of each grip bar is super A work tool including a blade portion to which a cutting edge tip made of a hard alloy is attached is disclosed (see Patent Document 1).

  Japanese Patent Laid-Open No. 7-80775

  The pliers that are the work tools are those in which a cutting edge tip made of cemented carbide is attached instead of quenching steel to form a cutting edge, but the working process is complicated, and the cutting edge tip made of cemented carbide is used. There was a problem that it was expensive.

  The present invention is made in order to solve the above-mentioned problem, in a pliers in which a crossing portion of a pair of gripping rods is axially attached, and a holding portion and a blade portion are formed on the tip side from the axial attachment portion, A concave groove is formed between the outer peripheral edge of the shaft of the shaft attachment portion and the blade portion. The concave groove is formed by penetrating these gripping bars when the holding portion is in a predetermined opening state, and a pair of cutting blades are formed. When a thick line or the like that is a material to be cut is sandwiched in the concave groove and the gripping part is clamped in the closing direction, the side surfaces of the pair of cutting blades are overlapped to insert into the concave groove. The cut material to be cut is cut.

  According to the pliers of the present invention, the cutting blade provided in the concave groove is provided at a location closer to the axis (fulcrum) of the shaft attachment portion than the conventional blade portion. Therefore, when the stress that can cut the material to be cut is equal, cutting with the cutting blade provided in the concave groove has less force to grip the gripping portion (power point) than cutting with the blade portion of the conventional pliers. Good. In other words, even if the gripping force is the same, it is possible to cut a wire that is thicker than cutting with a conventional blade if the groove is cut.

  It is a front view of a closed state which shows an example of an embodiment of the present invention.   It is a front view of the open state which shows an example of embodiment of this invention.   It is the A section enlarged view of FIG.   It is explanatory drawing which shows the cutting effect | action of a to-be-cut member.

  Hereinafter, the pliers excellent in cutting force of the present invention will be described in detail based on the drawings. FIG. 1 is a front view showing a closed state of an embodiment of the present invention, and FIG. 2 is a front view showing an opened state of an embodiment of the present invention. The material used for the pliers excellent in cutting force (hereinafter referred to as pliers) is carbon tool steel SK7, carbon steel for machine structure S55C, or higher quality. Further, heat treatment (quenching / tempering) is performed, and the hardness of the blade portion is 56 to 64 on the Rockwell C scale.

  1 and 2, the pliers have a pair of gripping rods 2 a, 2 b that are intersected by a shaft 3, and are connected to the gripping portion 5 and the gripping portion 5 on the tip side of the shaft mounting portion 4. The blade portion 6 is formed. The shaft 3 is fixed to one gripping rod 2a, and is pivotally attached to a shaft hole provided in the other gripping rod 2b.

  Between the outer peripheral edge of the shaft-attaching portion 4 and the blade portion 6, there is a pair of blade edges 8 that penetrate the gripping rods 2 a and 2 b in a state where the holding portion is opened 20 ° to 30 ° α. A concave groove 7 is formed. As shown in FIG. 3A, the bottom of the groove 7 is formed in a semicircle having the diameter of the width of the groove 7, and its apex is in contact with the outer peripheral edge of the shaft 3. As shown in FIGS. 3B and 3C, the bottom of the groove 7 may not be in contact with the shaft 3 and may be provided by engraving the shaft 3. Further, the concave groove 7 may be provided so as to be inclined from one gripping rod 2b toward the other gripping rod 2a.

  FIG. 4 is an explanatory view showing the cutting action of the member 10 to be cut. When the member 10 to be cut is inserted into the groove 7 as shown in FIG. 4 (a) and the grip bars 2a and 2b are clamped in the direction in which the gripper 5 is closed as shown in FIG. 4 (b), FIG. As shown in (c), the member 10 to be cut inserted into the groove 7 is cut by overlapping the edge 8 of the groove 7.

  The pliers of the present invention can easily cut thick lines and the like that were difficult to cut by conventional pliers, and can further expand the applications of conventional pliers.

1 pliers (pliers with excellent cutting force)
2a, 2b Gripping rod 3 Axis 4 Axis mounting portion 5 Holding portion 6 Blade portion 7 Concave groove 8 Blade edge α Opening 10 Member to be cut (thick line)

Claims (1)

In the pliers in which the intersecting portion of the pair of gripping rods is axially attached, and a gripper portion and a blade portion are formed on the tip side from the axial attachment portion,
Between the outer peripheral edge of the shaft-attached portion and the blade portion, when the holding portion is in a predetermined opening state, a recessed groove having a pair of blades is formed through these gripping bars, and the holding portion is closed. A pliers excellent in cutting force, characterized in that when the gripping part is clamped, the material to be cut inserted into the groove is cut.

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