JP3226210U - Hand tools - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand tool having a high gripping portion strength even if the gripping portion has a narrow width. A hand tool (1) includes a pair of gripping parts (5) and a pair of gripping parts (6) swinging around a shaft (4) in conjunction with the pair of gripping parts (5). , The thin-walled portions 10 that are recessed in the extending direction J of the shaft portion 4 are provided on the opposite sides, and the back-side reinforcing portion 11 that is thicker than the thin-walled portion 10 on the opposite side. The thin-walled portion 10 forms a blade portion 10A extending from the starting point a on the side of the shaft portion 4 to the tip b, and extends between the starting point a of the thin-walled portion 10 and the shaft portion 4, and the thin-walled portion 10 is formed. Of the shaft portion 4 and the first reinforcing portion 12 provided in the first extending range E1 on the side of the starting point a of which the thickness gradually increases to a predetermined thickness t2 that is equal to or larger than the maximum thickness t1 of the back side reinforcing portion 11. The second reinforcing portion 13 having a predetermined thickness t2 is provided in the second extending range E2 which is the side. [Selection diagram] Figure 1

Description

  TECHNICAL FIELD The present invention relates to a hand tool for cutting a cable, a claw, a hard claw, or the like.

  A hand tool for cutting a cable, a winding nail, a hard nail, etc. has been proposed (see Patent Document 1). An example of this hand tool includes a pair of gripping portions and a pair of gripping portions that interlock with the pair of gripping portions and swing around a shaft portion. As shown in FIG. 3, the pair of holding portions 26 on the tip side of the shaft portion 24 each have a blade portion 26A. Each blade portion 26A is formed so that the thickness gradually decreases from the end surface of the sandwiching portion 26 opposite to the opposite side to the opposite side.

Japanese Utility Model Publication No. 5-56062

  By the way, if the width of the blade portion 26A is wide, it is not possible to cut a thin, deep-cut object, so there is a demand for a hand tool with a narrow width of the holding portion 26. However, if the width W of the blade portion 26A is simply reduced, the blade portion 26A has a structure in which the thickness is gradually reduced toward the sides facing each other, so that there is a problem that the strength of the holding portion 26 is insufficient.

  Therefore, the present invention has been made in view of the problems in the conventional hand tools, and an object thereof is to provide a hand tool having a high gripping portion strength even when the width of the gripping portion is narrow. To do.

  In order to achieve the above object, the present invention is a hand tool including a pair of gripping portions and a pair of gripping portions that swings around a shaft portion in conjunction with the pair of gripping portions. The sandwiching portion has thin-walled portions that are recessed in the extending direction of the shaft portion on opposite sides, and the back side reinforcement that is thicker than the thin-walled portion on the opposite side to each other. The thin-walled portion forms a blade portion from the starting point on the side of the shaft portion to the tip, extends between the starting point of the thin-walled portion and the shaft portion, and the starting point of the thin-walled portion. A first reinforcing portion that is provided in the first extending range that is on the side of and that gradually increases in thickness to a predetermined thickness that is equal to or greater than the maximum thickness of the back side reinforcing portion, and a second extending that is on the side of the shaft portion. Provided is a hand tool, which is provided in a range and has a second reinforcing portion having the predetermined thickness.

  It is preferable that the pair of sandwiching portions are entirely formed into an isosceles triangle in a plan view in the extending direction of the shaft portion.

  It is preferable that each of the sandwiching portions is formed so as to be gradually narrowed toward a tip end thereof in a side view perpendicular to the extending direction of the shaft portion.

  The upper surface of the first reinforcing portion is formed into a rounded shape in a side view perpendicular to the extending direction of the shaft portion, and the radius of the rounded shape is such that the entire upper surface of the sandwiching portion is rounded. It is preferable that the radius is smaller than the radius of the round shape in the case of.

  According to one aspect, in the hand tool according to the present invention, it is possible to provide a hand tool having a high gripping portion strength even if the gripping portion is formed to have a small width.

(A) is the whole perspective view of a hand tool, (b) is the B section enlarged view of (a). (A) is a rear view of the hand tool, (b) is a plan view of the hand tool, (c) is a front view of the hand tool, and (d) is a front view of the hand tool. It is a principal part perspective view of the hand tool of a prior art example.

Hereinafter, an embodiment of a hand tool of the present invention will be described in detail with reference to the drawings.
1 and 2, the dimensional ratios in the drawings are exaggerated for convenience of description and may differ from the actual ratios.

  The hand tool 1 according to the present embodiment has a pair of arm members 2 which intersect with each other and whose intersections are supported by the shaft portion 4. The pair of arm members 2 includes a pair of gripping portions 5 located on one side of the shaft portion 4 and a pair of holding portions 6 located on the other side of the shaft portion 4.

  The pair of grips 5 are parts gripped by an operator. When the operator changes the distance between the pair of gripping portions 5, the pair of holding portions 6 shifts in the separating / contacting direction around the shaft portion 4. When the pair of gripping portions 5 is displaced in the narrowing direction, the pair of gripping portions 6 is also displaced in the narrowing direction, and finally, it is possible to shift to a position where the inner surfaces of the pair of gripping portions 6 facing each other come into contact with each other. There is.

  The pair of sandwiching portions 6 are portions for cutting an object to be cut (not shown). The pair of sandwiching portions 6 each have a thin portion 10 that is recessed in the extending direction J of the shaft portion 4 on the side facing each other, and are thicker than the thin portion 10 on the side opposite to each other. Has a back side reinforcing portion 11. The thin portion 10 forms a blade portion 10A extending from a starting point a on the side of the shaft portion 4 to a tip b. In the blade portion 10A, the tips facing each other are the blade tips, and the boundary position with the first reinforcing portion 12 described below is the starting point a, and the starting point a is located closer to the leading end side of the sandwiching portion 6 than in the conventional example. ..

  The pair of sandwiching portions 6 has a portion extending between the starting point a of the thin portion 10 and the shaft portion 4, and the back side is included in the first extending range E1 on the side of the starting point a of the thin portion 10. A first reinforcing portion 12 is provided whose thickness gradually increases to a predetermined thickness t2 that is equal to or larger than the maximum thickness t1 of the reinforcing portion 11. A second reinforcing portion 13 having a predetermined thickness t2 is provided in the second extending range E2 on the side of the shaft portion 4.

  Please refer to FIG. 2B and FIG. The pair of holding portions 6 are formed in a generally isosceles triangle with respect to the K axis in a plan view in the extending direction J of the shaft portion 4.

  Please refer to FIG. 2 (c) and FIG. 1 (b). Each sandwiching portion 6 is formed so as to be gradually narrowed toward the tip end in a side view perpendicular to the extending direction J of the shaft portion 4.

  The upper surface of the first reinforcing portion 12 is formed in a rounded shape in a side view perpendicular to the extending direction J of the shaft portion 4 (see FIGS. 2C and 1B). The radius of the rounded shape is smaller than the radius of the rounded shape when the entire upper surface of the holding portion 6 is rounded.

  As described above, the hand tool 1 according to the present embodiment includes the pair of grips 5 and the pair of grips 6 that swings around the shaft 4 in association with the pair of grips 5. The pair of sandwiching portions 6 each have a thin portion 10 recessed in the extending direction J of the shaft portion 4 on the side facing each other, and a thin portion 10 on the opposite side to the side facing each other than the thin portion 10. The thin-walled portion 10 has a thick back reinforcing portion 11 and forms a blade portion 10A extending from a starting point a on the side of the shaft portion 4 to a tip b, and between the starting point a of the thin-walled portion 10 and the shaft portion 4. Is provided in a first extending range E1 that is on the side of the starting point a of the thin portion 10 and gradually increases in thickness to a predetermined thickness t2 that is greater than or equal to the maximum thickness t1 of the back side reinforcing portion 11. It has a portion 12 and a second reinforcing portion 13 provided in the second extending range E2 on the side of the shaft portion 4 and having a predetermined thickness t2.

  Therefore, the back side of the pair of blade portions 10A is reinforced by the back side reinforcing portion 11, and the portion between the pair of blade portions 10A and the shaft portion 4 is reinforced by the first reinforcing portion 12 and the second reinforcing portion 13. The hand tool 1 having high strength can be provided even when the width of the holding portion 6 is narrowed as in the embodiment.

  The pair of holding portions 6 are formed into an isosceles triangle as a whole in a plan view in the extending direction J of the shaft portion 4. Therefore, the pair of sandwiching portions 6 can be easily inserted into a narrow gap, and an object to be cut (not shown) located deep in the gap can be cut.

  Each sandwiching portion 6 is formed so as to be gradually narrowed toward the tip end in a side view perpendicular to the extending direction J of the shaft portion 4. Therefore, the pair of holding portions 6 can be easily inserted into a gap having a low height, and an object to be cut (not shown) located in the deep part of the gap can be cut.

The upper surface of the first reinforcing portion 12 is formed in a rounded shape in a side view perpendicular to the extending direction J of the shaft portion 4. Therefore, it can be inserted into a gap deeper than the length of the pair of blades 10A as smoothly as possible, which is convenient.
The radius of the rounded shape is smaller than the radius of the rounded shape when the entire upper surface of the holding portion 6 is rounded. As a result, the size of the second reinforcing portion 13 that contributes to an increase in the strength of the first reinforcing portion 12 can be made as large as possible, so that the strength of the pair of sandwiching portions 6 can be improved.

  Although the present embodiment has been described above, the present embodiment is not limited to these, and various modifications can be made within the scope of the gist of the present embodiment.

DESCRIPTION OF SYMBOLS 1 Hand tool 4 Shaft part 5 Grip part 6 Clamping part 10 Thin part 10A Blade part 11 Back side reinforcement part 12 1st reinforcement part 13 2nd reinforcement part E1 1st extension range E2 2nd extension range

Claims (4)

A hand tool comprising a pair of gripping portions, and a pair of gripping portions that swing around a shaft portion in conjunction with the pair of gripping portions,
The pair of sandwiching portions each have a thin portion recessed in the extending direction of the shaft portion on the side facing each other, and a spine thicker than the thin portion on the side opposite to each other. Has side reinforcements,
The thin portion forms a blade portion from a starting point on the side of the shaft portion to a tip,
Extending between the starting point of the thin portion and the shaft portion, provided in a first extending range that is the starting point side of the thin portion, to a predetermined thickness equal to or greater than the maximum thickness of the back side reinforcing portion. A hand tool comprising: a first reinforcing portion having a gradually increasing thickness, and a second reinforcing portion having a predetermined thickness, the second reinforcing portion being provided in a second extending range on the side of the shaft portion.   The hand tool according to claim 1, wherein the pair of sandwiching portions are formed into an isosceles triangle as a whole in a plan view in the extending direction of the shaft portion.   The hand according to claim 1 or 2, wherein each of the holding portions is formed so as to be gradually narrowed toward a tip end in a side view perpendicular to the extending direction of the shaft portion. tool.   The upper surface of the first reinforcing portion is formed into a rounded shape in a side view perpendicular to the extending direction of the shaft portion, and the radius of the rounded shape is such that the entire upper surface of the sandwiching portion is rounded. The hand tool according to any one of claims 1 to 3, wherein the hand tool has a radius smaller than the radius of the rounded shape in the case of the above.

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