JP2013043220A - Pliers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide easy-to-use pliers capable of effectively pinching a nut or a bolt head and with which a space for inserting the hand for gripping a grip can be easily obtained.SOLUTION: An inclination face 17 is formed at a tip end of a pinching part 9 for pinching an object. The inclination face 17 is orthogonal to a pinching face 11 of the pinching part 9 and is formed inclined with respect to the longitudinal direction of the pliers. A recessed part 19 is formed at a corner between the inclination face 17 and the pinching face 11. A regular hexagonal column-shaped object such as a nut or a bolt head is pinched by the recessed part 19. The recessed part 19 includes two fitting faces 21 and fits with the regular hexagonal column-shaped object. The two fitting faces 21 are orthogonal to the inclination face 17 and form a 120° angle with each other.

Description

  The present invention relates to a structure of a pliers that can hold a regular hexagonal prism-shaped object such as a nut.

  In order to pinch and rotate a regular hexagonal prism-shaped object such as a nut or bolt head, a wrench that is a special tool may be used. However, if a regular hexagonal prism-shaped object can be effectively sandwiched between the most frequently used pliers, it is possible to provide a wrench-like function, which is convenient.

  Patent Document 1 below proposes a pliers that sandwiches a nut. In this pliers, a semi-cylindrical concave portion is formed along the both clamping surfaces used by the clamping portion for clamping the object, and both concave portions are combined to form a cylindrical hole.

JP 10-34546 A

However, even if the nut is sandwiched between the semi-cylindrical recesses in Patent Document 1, the nut is slippery with respect to both recesses and cannot be effectively clamped, so that it may be difficult to turn.
In addition, nuts and bolt heads are mostly fixed to a large fixed surface, and a space for inserting a hand to grip the grip is required between the fixed surface and the grip of the pliers. No. 1 pliers must be used while lying on a fixed surface, and it is difficult to obtain a space for putting hands. Therefore, it is difficult to use.

  In order to solve the above-described problems, the present invention provides a pliers that can effectively hold a regular hexagonal prism-shaped object such as a nut or a bolt head, easily obtains a space for holding a grip, and is easy to use. With the goal.

  In order to solve the above-described problems, a first invention includes a sandwiching portion that sandwiches an object, an inclined surface that is orthogonal to the sandwiching surface at the tip of the sandwiching portion and is formed obliquely with respect to the pliers longitudinal direction, A recess formed at an angle between the inclined surface and the holding surface and holding a regular hexagonal prism-shaped object; and two fit surfaces forming the recess and being substantially orthogonal to the inclined surface and forming 120 degrees with each other. It is a characteristic pliers.

  According to a second aspect of the present invention, the sandwiching portion has a quadrangular shape as viewed from a direction orthogonal to the sandwiching surface, and the inclined surface is formed so as to cut the corners of the quadrangle. Pliers.

According to the first or second invention, when a regular hexagonal prism-shaped object is sandwiched between recesses, the two fitting surfaces forming the recess and forming 120 degrees with each other fit the regular hexagonal prism-shaped object. It is hard to slip and can be held effectively. Therefore, it is easy to turn a regular hexagonal prism shape.
Moreover, if the inclined surface where the recess is formed is used in a state along the fixed surface, the pliers are inclined upward with respect to the fixed surface, and the grip is held between the fixed surface and the grip of the pliers. It is easy to obtain a space for putting hands in and easy to use.

  According to the second invention, the shape of the clamping part is a quadrangle, and a pliers having a sturdy clamping part, that is, a jaw, can be obtained, and a large force can be easily transmitted to the regular hexagonal columnar shape. Cheap.

It is a perspective view which shows the use condition of the pliers which concerns on one Embodiment of this invention from diagonally upward. It is the figure which looked at FIG. 1 from the II direction diagonally below. It is a perspective view which shows the clamping part of the back | inner side of FIG. (A), (B), (C), (D), and (E) are views of FIG. 3 viewed from directions A, B, C, D, and E, respectively. The pliers which concern on other embodiment of this invention are shown, and are perspective views corresponding to FIG. It is a perspective view which shows the clamping part of the back | inner side of FIG. It is sectional drawing which shows the effect | action of FIG.

The pliers which concern on one Embodiment of this invention are shown in FIGS.
In this pliers 1, a first member 3 and a second member 5 form a pair, which are coupled by a joint portion 7, and are rotatable about the joint portion 7. In front of the joint portion 7 of each member 3, 5, a clamping portion 9 is formed at the tip of the shape curved in an arc shape. A clamping surface 11 is formed on the clamping unit 9 in order for the pliers 1 as a tool to clamp a metal fitting or material that is an object. The sandwiching surface 11 is used as a pair, and a wavy unevenness 13 for increasing friction is formed. The rear portions of the members 3 and 5 with respect to the joint portion 7 are largely curved outward to form the grip 15.

  The clamping part 9 that clamps the object has a quadrangular shape as viewed from the direction orthogonal to the clamping surface 11 (FIGS. 2 and 4E), and is a sturdy jaw. An inclined surface 17 is formed at the tip of the sandwiching portion 9, that is, so as to cut one corner of the quadrangle (FIGS. 2 and 4E). The inclined surface 17 is orthogonal to the sandwiching surface 11 and is formed obliquely with respect to the pliers longitudinal direction (FIG. 1).

A concave portion 19 (see FIG. 3) is formed at the corner between the inclined surface 17 and the sandwiching surface 11. The pair of recesses 19 hold a regular hexagonal prism-shaped object such as a nut 20 or a bolt head from both sides.
The concave portion 19 is in contact with the inclined surface 17 and has two fitting surfaces 21A and 21B so as to fit a regular hexagonal prism shape. The two fitting surfaces 21 </ b> A and 21 </ b> B are substantially orthogonal to the inclined surface 17. It is not the most complete orthogonal. The reason for this is that when the jaw of the clamping part 9 is opened and the regular hexagonal prism shaped object is clamped, the concave part 19 is formed so that the concave part 19 becomes deeper toward the back of the concave part 19 so that the concave part 19 fits into the regular hexagonal prism shaped article. This is because they are formed and therefore intersect at an angle slightly less than 90 degrees. Further, the fitting surfaces 21A and 21B are adjacent to each other and form 120 degrees. The bottom surface 23 at the back of the recess 19 is substantially orthogonal to the two fitting surfaces 21A and 21B. A recess 19 is formed by these three surfaces.

"Effect of the embodiment"
(1) According to the pliers 1 of this embodiment, as shown in FIGS. 1 and 2, when a regular hexagonal prism-shaped object such as a nut 20 or a bolt head is sandwiched by the recesses 19 from both sides, the recesses 19 are formed. The two fitting surfaces 21A and 21B, which form 120 degrees with each other, closely contact each other at the corners of 120 degrees on both sides of the regular hexagonal prism shape and fit. For this reason, a regular hexagonal columnar shape is hard to slip, and effective clamping can be performed. Therefore, it is easy to turn the regular hexagonal prism shape.

(2) Moreover, as shown in FIG. 1, the inclined surface 17 in which the recessed part 19 is formed is used in a state along the fixed surface G on which the nut 20 or the bolt head is provided, so that the fixed surface G can be used. Thus, the pliers 1 are inclined upward, and it is easy to obtain and use the space S in which the hand holding the grip 15 is inserted between the fixed surface and the grip 15 of the pliers 1.
(3) Further, the sandwiching portion 9 has a quadrangular shape, and a pliable sandwiching portion 9, that is, a pliers 1 having a jaw can be obtained, and a large force can be easily transmitted to the regular hexagonal columnar shape, and therefore the regular hexagonal columnar shape can be easily rotated. .

"Other embodiments"
In the above embodiment, the concave portion 19 of the sandwiching portion 9 is formed in both the sandwiching portions 9, but in other embodiments, it may be formed only in one sandwiching portion 9.
In the above embodiment, the two fit surfaces 21A and 21B constituting the recess 19 are adjacent to each other, and thus the recess 19 is configured by three surfaces of the back bottom surface 23 and the two fit surfaces 21A and 21B. However, in other embodiments, the recess 19 can have other shapes.

For example, as shown in FIGS. 5 and 6, the recess 19 is configured to have two fitting surfaces 21 </ b> A and 21 </ b> B in contact with the inclined surface 17, but these two fitting surfaces 21 </ b> A and 21 </ b> B are It arrange | positions on both sides of the curved surface 25 of the circular arc-shaped cross section located in between. And it makes 120 degree | times mutually on both sides of the curved surface 25 of an arc-shaped cross section. The bottom surface 23 at the back of the recess 19 is substantially orthogonal to the two fitting surfaces 21A and 21B and the curved surface 25. These four surfaces 21A, 21B, 23, 25 constitute a recess 19.
As shown in FIG. 7, the concave portion 19 having such a shape also has two hexagonal prism shaped objects such as nuts 20 and bolt heads sandwiched between the concave portions 19 from both sides, and the two that form 120 degrees with respect to the curved surface 25. The fitting surfaces 21A and 21B are in close contact with the corners of 120 degrees on both sides of the regular hexagonal prism shape and fit. For this reason, the regular hexagonal prism-shaped object is difficult to slip and can be effectively clamped, so that the regular hexagonal prism-shaped object can be easily rotated.

In the above embodiment, the pliers 1 in the narrow sense in which the sandwiching portion 9 is square has been described as an example, but in the other embodiments, the coupling position of the pliers 1 in the broad sense, for example, the joint portion 7 is shifted. The present invention can be applied to a plier that can be used.
That is, the first member 3 and the second member 5 are paired and coupled by the joint portion 7 so that the first member 3 and the second member 5 can be rotated about the joint portion 7. 9 is formed, and the present invention can be applied to a tool for holding the grip 15 formed behind the joint portion 7 of each member.
In the above embodiment, the inclined surface 17 is expressed as a plane, but in other embodiments, it may be a curved surface instead of a complete plane.

  DESCRIPTION OF SYMBOLS 1 ... Plier, 3 ... 1st member, 5 ... 2nd member, 7 ... Joint part, 9 ... Clamping part, 11 ... Clamping surface, 13 ... Concavity and convexity, 15 ... Grip, 17 ... Inclined surface, 19 ... Recessed part, 21 ... Fit surface, 23 ... bottom surface.

Claims (2)

  A clamping part that clamps an object, an inclined surface that is perpendicular to the clamping surface at the tip of the clamping part and is formed obliquely with respect to the longitudinal direction of the pliers, and is formed at an angle between the inclined surface and the clamping surface. A pliers comprising: a concave portion for sandwiching a prismatic object; and two fitting surfaces constituting the concave portion and being substantially orthogonal to the inclined surface and forming 120 degrees from each other.   2. The pliers according to claim 1, wherein the sandwiching portion has a quadrangular shape when viewed from a direction orthogonal to the sandwiching surface, and the inclined surface is formed so as to cut corners of the quadrilateral. .

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