JP5685749B1 - Linear steel bending tool - Google Patents

Abstract

An object of the present invention is to provide a linear steel material bending tool which is easy to operate and can be easily and quickly processed. In a linear steel material bending tool, a sandwiching portion of a linear steel material forms a convex portion along the longitudinal direction on one side and a concave portion along the longitudinal direction on the other side, and the convex surface is a right angle. The concave surface forms a shape that engages with the right-angled shape of the convex surface, and a groove is formed at the bottom of the concave portion, and the width of the groove continuously changes along the longitudinal direction of the clamping portion. Let [Selection] Figure 1

Description

  The present invention relates to a linear steel material bending tool that is particularly suitable for sandwiching a linear steel material and processing it into a true angle.

With conventional wire steel bending tools, it was difficult and difficult to bend even if it was a thin wire. Those who bent the linear steel material in line with a linear steel material bending tool were straightened, but those who did not have the wire were rounded.
Therefore, there are the following linear steel material bending tools as tools for bending a linear steel material in a straight line.

  For example, a pair of grip portions, a sandwiching portion formed integrally with the grip portion at each distal end portion of these grip portions, and a groove provided in a longitudinal direction on opposing surfaces of the pair of gripping portions, A first bending mold having a bending mold such as a convex portion fixed to a groove provided in one of the pair of holding portions by a fixing device that can be attached with screws or the like, and a groove provided in the other holding portion There is a bending tool provided with a second bending die having a shape that is paired with the first bending die and fixed with a fixing device such as a screw that can be freely attached (for example, Patent Documents). 1).

  Also, there is a leg bending tool for electronic parts, characterized in that a protruding strip and a concave groove are provided opposite to each other between the abutting surfaces in a pinch-shaped main clamping port (for example, Patent Document 2).

  Japanese Utility Model Publication No. 49-135898   Japanese Utility Model Publication No. 52-162451

The background art has the following problems. That is, when a linear steel material is bent with the bending tool,
(I) Even if one bends straight, the other is rounded.
(B) The bent tip did not form a right angle.
(C) The shape of the bent part of the bent line was not the same.
(D) Only one type of linear steel material can be bent, and if the thickness changes, it cannot be bent accurately.

The linear steel material bending tool according to Embodiment 1 for solving the above-described problem is a pair of rod-shaped members, and has a pivot shaft that rotatably couples the pair of rod-shaped members. A grip portion is provided at each one end side, and a sandwiching portion is provided at each other end portion. This sandwiching portion forms a convex portion along the longitudinal direction on one side and a concave portion along the longitudinal direction on the other side. and, the concave surface the protrusion surface forms the approximate straight prismatic forms a meshed shape in the approximate straight square of the convex portion surface, and a groove is formed in the recess bottom, the width of the groove, It is characterized by being continuously changed along the longitudinal direction of the clamping part.

  Moreover, the linear steel material bending tool of Embodiment 2 for solving the said subject forms the mark corresponded to the groove width changed continuously in Embodiment 1 along the longitudinal direction of the said clamping part. It is characterized by this.

  In the first embodiment, when the linear steel material is bent, the linear steel material is placed and held in the holding portion in a direction perpendicular to the holding portion longitudinal direction while holding the handle portion, and the handle portion is clamped by clamping the handle portion. The portions engage with each other, and the linear steel material can be sandwiched between the substantially right-and-left concavo-convex portions formed on the sandwiching portion surface, and the linear steel material can be bent into a substantially right-angle shape. Further, since the groove is formed at the bottom of the sandwiching portion, when the linear steel material is bent, it can be surely formed by the groove from the right-angled bent portion of the linear steel material.

  Further, since the width of the groove at the bottom of the sandwiching portion recess is continuously changed along the longitudinal direction of the sandwiching portion, when bending a linear steel material having several types of wire diameters, depending on the wire diameter of the linear steel material Since the linear steel material is placed and bent at the position of the predetermined groove width of the sandwiching portion, the right-angled bent portion of the linear steel material of the wire diameter is changed according to the groove width according to the wire diameter of the wire steel material. It can be molded more appropriately.

  In the second embodiment, since the mark corresponding to the groove width continuously changed along the longitudinal direction of the sandwiching portion of the first embodiment is formed, when bending a linear steel material having several types of wire diameters, Depending on the wire diameter of the linear steel material, it is possible to place the linear steel material at a predetermined groove width position with the mark corresponding to the groove width as a mark.

Overall perspective view of a linear steel material bending tool according to the present invention Sectional view in the A-A 'direction of the same steel bending tool Perspective view of a state in which a linear steel material is placed on the same linear steel material bending tool Bending start state diagram of linear steel placed on the same linear steel bending tool Bending end state diagram of linear steel placed on the same linear steel bending tool A-A 'sectional view of the same linear steel bending tool (when bending linear steel) Detailed view of groove part of the same wire bending tool The figure which shows the mark equivalent to the groove width of the same linear steel material bending tool Second embodiment of the same wire steel bending tool clamping part

  An exemplary configuration of the linear steel material bending tool 100 according to the present invention will be described below with reference to FIGS. 1 to 2 and FIG.

  In FIG. 1, a linear steel material bending tool 100 is a pair of rod-shaped members 1, and has a pivotal support shaft 2 that rotatably couples the pair of rod-shaped members 1, and each of the pair of rod-shaped members 1. A grip portion 1a1b is provided on one end side, and a clamping portion 3a3b is provided on each other end portion.

  The sandwiching portion 3a3b has a convex portion 5 along the longitudinal direction (that is, the direction from the rotation support shaft 2 to the tip portion 4) on one side, and the longitudinal direction (that is, the direction from the rotation support shaft 2 to the tip portion 4) on the other side. ) Along the recess 6.

As shown in FIG. 2, the surface of the convex portion 5 has a substantially right angle shape, the surface of the concave portion 6 has a shape that meshes with the substantially right angle shape of the surface of the convex portion 5, and a groove is formed at the bottom of the concave portion 5. 7, and the width of the groove 7 is nipped as shown in FIG. 7 (a perspective view from the front end portion 4 toward the rotating support shaft 2 with the nipping portion 3 a 3 b of the linear steel material bending tool opened). It is continuously changed along the longitudinal direction of the portion 3b (that is, the direction from the rotation support shaft 2 to the tip portion 4).

  An example of the usage state of the linear steel material bending tool will be described below with reference to FIGS. 3 to 5.

  When the linear steel material 10 (in this embodiment, a wire for wiring is shown, but it may be a piping for wiring) is folded as shown in FIG. 3 (however, the operator's hand is omitted). Hold the part 1a1b with one hand of the operator and hold the wire steel material 10 with the other hand of the operator in the longitudinal direction of the sandwiching part 3a3b (that is, the direction from the rotation support shaft 2 to the tip part 4). It is placed and held on the clamping part 3a3b in a direction orthogonal to each other.

  Next, as shown in FIG. 4 to FIG. 5 (however, the operator's hand is omitted), the grip portion 1a1b is gripped to engage the sandwiching portion 3a3b. The linear steel material 10 can be sandwiched between the right-angled concave portion 6 and the convex portion 5, and the linear steel material 10 can be bent into a substantially right-angle shape.

  Here, as shown in FIG. 6, when the linear steel material 10 is bent, the groove 7 is formed at the bottom of the concave portion 6 of the sandwiching portion 3 b, so that the bent right-angle portion is opened to the groove 7. Thus, the bent portion of the linear steel material 10 can be surely formed into a right-angled shape.

  Further, as shown in FIG. 7, the width of the groove 7 at the bottom of the concave portion 6 of the sandwiching portion 3b is continuously along the longitudinal direction of the sandwiching portion 3b (that is, the direction from the rotation support shaft 2 to the distal end portion 4). Change.

  Thus, when the linear steel material 10 having several types of wire diameters is bent, the linear steel material 10 is placed at a position of the predetermined groove 7 width of the clamping portion 3a3b according to the wire diameter of the linear steel material 10. Can be folded.

  That is, as shown in FIGS. 6 and 7, when the linear steel material 10 is bent, the width of the groove 7 at the bottom of the concave portion 6 of the sandwiching portion 3 b is set to a groove 7 width suitable for the wire diameter of the linear steel material 10. Since it sets, the bending part of the linear steel material 10 can be shape | molded more appropriately at a right angle shape.

  8A is a cross-sectional view of the tip end portion 4 of the linear steel material bending tool 10 in the direction of FIG. 2A-A ′, and FIG. 8B is a view of the vicinity of the rotating support shaft 2 of the linear steel material bending tool 10. It is sectional drawing of 2 A-A 'direction. (C) is a representation of the mark 8 by the approximate wire diameter value of the linear steel material 10. Further, (d) represents the mark (mark) 8 by the approximate wire diameter width of the linear steel material 10.

  As shown in FIGS. 7 and 8 (a) and 8 (b), the width of the groove 7 at the bottom of the recess 6 of the sandwiching portion 3b is the longitudinal direction of the sandwiching portion 3b (that is, the direction from the rotation support shaft 2 to the distal end portion 4). ), The rotation support shaft 2 side is continuously changed from the large width toward the distal end.

  As a result, when the linear steel material 10 having a large wire diameter is bent, it is bent using the wide groove 7 close to the rotating support shaft 2, so that “the principle of lever” with the rotating support shaft 2 as a fulcrum is used. Even if the handle portion 1a1b is lightly squeezed, the linear steel material 10 can be easily bent.

  As shown in FIGS. 8C and 8D, it corresponds to the width of the groove 7 continuously changed along the longitudinal direction of the clamping portion 3b (that is, the direction from the rotation support shaft 2 to the tip portion 4). A mark 8 is formed.

  As a result, a mark 8 corresponding to the width of the groove 7 continuously changed is formed along the longitudinal direction of the clamping portion 3b (that is, the direction from the rotation support shaft 2 to the tip portion 4). When the linear steel material 10 having several types of wire diameters is bent, the linear steel material 10 is clamped with a mark 8 corresponding to the width of the groove 7 as a mark according to the wire diameter of the linear steel material 10. It can be placed at the position of the width of the predetermined groove 7 of 3b.

  In the present embodiment, the mark 8 is provided on the outer surface of the sandwiching portion 3a, but may be provided on the outer surface of the sandwiching portion 3b.

  Another embodiment of the linear steel material bending tool 100 of the present invention will be described below with reference to FIG.

  In this embodiment, the grip portion 1a1b and the sandwiching portion 3a3b of the linear steel material bending tool 100 are bent at an angle of about 90 degrees around the rotation support shaft 2.

  As a result, the handle portion 1a1b is held with one hand of the operator (however, the operator's hand is omitted), and the linear steel material 10 is held with the other hand of the operator (however, the operator's hand is omitted) and held. When placing / holding on the holding portion 3a3b in a direction orthogonal to the longitudinal direction of the portion 3a3b (ie, the direction from the rotation support shaft 2 to the tip portion 4), the operator's hands are operated in parallel. Therefore, operability is improved.

  Wiring wires, distribution pipes, etc. can be bent neatly at electrical construction sites. Moreover, when making a shape or a pattern with a wire etc., a fine work can be easily performed.

DESCRIPTION OF SYMBOLS 1 Bar-shaped member 1a 1b Handle part 2 Rotating spindle 3a 3b Holding part 4 Tip part 5 Convex part 6 Concave part 7 Groove part 8 Mark (mark)

Claims (2)

A pair of rod-shaped members, each having a pivotal support shaft that rotatably couples the pair of rod-shaped members, a grip portion at each one end of the pair of rod-shaped members, and a clamping portion at each other end The sandwiching part forms a convex part along the longitudinal direction on one side and a concave part along the longitudinal direction on the other side, the convex part surface forms a substantially right angle, and the concave part surface is forms the approximate straight rectangular in mesh with the shape of the convex portion surface, and the a groove is formed in the recess bottom, the width of the groove, wherein the along the longitudinal direction of the clamping unit to continuously change, it A linear steel material bending tool.   The linear steel material bending tool according to claim 1, wherein a mark corresponding to a continuously changed groove width is formed along a longitudinal direction of the sandwiching portion.

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