JPH0321782Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is mainly used for bending rod-shaped materials such as reinforcing bars, which are used in concrete block construction methods to bend reinforcing bars placed inside the blocks. It's about the ingredients.

Prior Art In a formwork concrete block structure, as shown in Fig. 8, horizontal reinforcements 3 and vertical reinforcements 4 are placed in the space between the inner and outer face shells 1 and 2, and concrete is filled with them. In the part of this wall that corresponds to the wall beam, both upper and lower ends of the vertical reinforcement 4 are bent into a U-shape, and the horizontal reinforcement is added to this U-shaped part. 3,3
It is necessary to connect the two by inserting the In this case, especially at the upper end of the vertical reinforcement 4, if this upper end is bent in advance into a U-shape, the horizontal reinforcement 3 cannot be inserted from the inside and outside of the wall, and must be inserted from the longitudinal direction of the horizontal reinforcement 3. Therefore, there are disadvantages such as making the work difficult.

Problems to be Solved by the Invention Therefore, in order to solve this problem, as shown in Fig. 9, the upper ends of the vertical bars 4 are bent at an angle of 90° or around 90°, instead of being bent into a U-shape as described above. It has been considered to bend horizontally in the horizontal direction, insert the horizontal reinforcement 3 from the side, and then bend the upper end of the vertical reinforcement 4 further into a U-shape up to 180 degrees. There is a need for a simple tool for bending the top end.

Of course, there have been devices for bending the ends of reinforcing bars into a U-shape, but they were all large machines installed in factories, and there was no inexpensive bending tool that could be easily carried on site. .

That is, the purpose of this invention was to provide an inexpensive and simple bending tool that can bend the ends of reinforcing bars on site.

Means for Solving the Problems In order to achieve such an object, in this invention, one of the pair of bar-shaped members 3 and 4 arranged perpendicularly to each other is connected to the other bar-shaped member 3. It is a bending tool for bending using the other rod-shaped material 3 as a fulcrum, and has a fulcrum engaging part 13 that is rotatably externally engaged with the outer periphery of the other bar-shaped member 3, and the tip locking part 14 is A rotation operation member 11 that bends this one end side by being locked to one end side of one of the rod-shaped members 4 and rotated about the fulcrum engagement part 13, and a part of the rotation operation member 11 that bends this one end side. At the same time, the distal end locking portion 20 is locked to the other end side of the one bar member 4 to prevent the bulge on the other end side of the one bar member 4 when the one bar member 4 is bent. Alternatively, there is provided a bending tool characterized by comprising a holding member 12 for holding the bending tool to prevent rotation.

Function The holding member 12 is used to prevent the bar-shaped member 4 to be bent from rotating or from expanding one end thereof. When the rotation operation member 11 is rotated while doing so, the tip locking portion 14
pushes the other end of the bar 4, thereby bending the end into a U-shape or other shape.

Embodiment FIGS. 1 to 4 show an embodiment in which the rotating operation member 11 and the holding member 12 are made of bar steel. In this embodiment, as in FIG. 9, the upper end of the vertical strip 4, which has been previously bent at approximately 90 degrees, is further bent into a U-shape by 180 degrees.
In this case, the vertical reinforcement 4 corresponds to one bar-shaped member and the horizontal reinforcement 3 corresponds to the other bar-shaped member in this invention. Further, for convenience of explanation, the upper end of the vertical strip 4 which is bent at 90 degrees will be referred to as a horizontal portion 5, and the portion below this bent portion will be referred to as a vertical portion 6.

The rotation operation member 11 has a rod-shaped vertical body portion 1
The lower end of 6 is bent into a semicircle so as to approximately match the outer diameter of the transverse reinforcement 3, and this semicircular bent portion serves as a fulcrum engaging portion 13;
After the tip extends obliquely upward, it is further bent downward to form a tip locking portion 14. Note that this tip locking portion 14 is twisted in one direction in the left-right direction, as shown in FIG. In addition, the vertical main body part 1
The upper end of the fulcrum engaging part 6 is bent in an inclined manner in the same direction as the extending direction of the tip of the fulcrum engaging part 13, and then further bent vertically upward to form a grip part 15.

Next, the holding member 12 is bent sideways into a bulging shape to form an abutment part 19 so that the lower end of the vertical body part 18 can come into contact with the outer periphery of the horizontal strip 3, and the tip thereof is bent downward. , extends obliquely in a direction opposite to the bulging direction, and is further bent in the opposite direction to form the tip locking portion 20. As shown in FIG. 3, this tip locking portion 20 is twisted obliquely in the left-right direction perpendicular to this bending direction.

FIG. 2 and FIG. 3 show these rotation operation members 11.
This shows the attachment state of the holding member 12. First, the holding member 12 is placed from the distal end side of the horizontal portion 5 to the side of the vertical strip 4, and its abutting portion 19 is attached to the horizontal strip 3.
At the same time, the end locking part 2
0 to the vertical portion 6 of the longitudinal strip 4. Then,
The fulcrum engagement part 13 of the rotation operation member 11 is externally engaged with the horizontal reinforcement 3 from the vertical part 6 side on the same side as the holding member 11 with respect to the vertical reinforcement 4, and further the distal end locking part 14 is engaged with the horizontal reinforcement 3. It is made to protrude in the same direction as the protruding direction of the horizontal part 5, and is engaged with the tip of the horizontal part 5 from above.

In this state, the vertical body parts 16 and 18 of the rotation operation member 11 and the holding member 12 respectively protrude upward, and while the holding member 12 is held in that position, the rotation operation member 11 is moved as shown in FIG. When it is rotated to the right in the figure as shown in the figure, the distal end locking portion 14 pushes the horizontal portion 6 downward and bends it using the horizontal strip 3 as a fulcrum. During this bending operation, the vertical portion 4 of the vertical strip 14 receives a force that causes it to bulge in the direction of arrow A, but the end locking portion 20 of the holding member 12 prevents this bulge.
It can be bent reliably. Also,
When the rotation operation member 11 is rotated, the horizontal portion 5 tries to rotate in the direction of the rotation operation member 11, that is, in the direction of arrow B in FIG. Because of the bulge-shaped abutting portion 19, rotation is prevented and bending can be ensured.

5 and 6 show other embodiments of the rotation operating member 11. FIG. In this embodiment, the vertical main body portion 16, the fulcrum engaging portion 13, and the tip locking portion 14 are constructed as separate members.

The tip locking part 14 bends the steel bar into a curved shape that bulges upward, and after bending both ends of the bar into a curved shape that bulges upward in a right angle direction, the tip is bent to the outer periphery of the horizontal reinforcement 3. A pair of fulcrum engaging portions 13,
13. And the vertical main body part 16
The lower end thereof is bent approximately 90 degrees to form a mounting portion 22, and this mounting portion 22 is formed into an upwardly curved bar that connects the fulcrum engaging portion 13 and the tip locking portion 14. It has the same curved shape as the section 23, and is arranged in the middle between the curved sections 23, 23,
It is fixed by welding or other means.

As shown in FIG. 6, the fulcrum engaging portions 13, 13
is externally engaged with the horizontal reinforcement 3 from the vertical portion 6 side,
The tip locking portion 14 is locked from above the horizontal portion 5.
The holding member 12 is the same as the embodiment shown in FIG. The vertical part 6 is held in contact with the vertical part 6 from the opposite side to prevent it from expanding. Even in this case, when the rotation operation member 11 is rotated to the right in the figure, the tip locking portion 14 pushes the tip of the horizontal portion 5 downward with the fulcrum engaging portion 13 as a fulcrum, so that this horizontal portion 5 is bent using the transverse reinforcement 3 as a fulcrum.

FIG. 7 shows yet another embodiment of this invention,
Both the rotation operation member 11 and the holding member 12 are molded from plate material.

First, the lower end of the vertical main body part 16 of the rotation operation member 11 formed in the shape of a band plate is integrally connected with a protrusion part 26 that protrudes laterally, and a presser piece 2 is attached to the tip of the protrusion part 26.
7 is fixed to form the tip locking part 14, and the lower end protrusion that protrudes downward from the base end of the protrusion 26 is formed into a helical shape wound in the same direction as the lateral protrusion 26. The inner circumferential surface thereof serves as a fulcrum engaging portion 13 that is externally engaged with the horizontal reinforcement 3.

On the other hand, a holding member 12 also formed into a strip shape
A wide portion 28 is integrally connected to the vertical body portion 18 of the vertical body portion 18, and a corner portion between the wide portion 28 and the vertical body portion 18 is hollowed out in a semicircular shape to form a contact portion 19 to the horizontal reinforcement 3, and further, A tip locking portion 2 for fixing a presser piece to the side surface of this wide portion 28 and locking it to the vertical portion 6
It is set to 0.

The method of use in this case is the same as that described above, and the fulcrum engaging portion 13 at the lower end of the rotation operating member 11 is connected to the vertical portion 6.
It is externally engaged with the horizontal stripe 3 from the same side as the horizontal part 5, and the tip locking part 14 is locked with the upper part of the horizontal part 5. Holding member 12
The abutting portion 19 is fitted into contact with the horizontal strip 3 from the distal end side of the horizontal portion 5, which is the opposite side to the vertical portion, and the distal end locking portion 20 is brought into contact with the horizontal strip 3 from the opposite side of the transverse strip 3. The operating member 12 is rotated while the holding member 11 is held by being locked to the vertical portion 6 of the longitudinal strip 4.

Although the above-mentioned embodiment shows the case of bending the vertical bars of reinforcing reinforcement, the bending tool of this invention is not limited to this type of bending tool, but can also be applied to bending other bar-shaped materials.

Effects of the invention As described above, according to this invention, the holding member prevents the bar-shaped material to be bent from expanding or rotating, and the rotating operation member is rotated to bend the material easily and easily. Can be bent. Moreover, this rotation operation member does not require a large force because it is rotated using the other rod-shaped member as a fulcrum. Furthermore, as shown in the examples, the bending tool of this invention can be manufactured at low cost by bending steel bars or pressing plate materials, is lightweight and has excellent transportability and handling, and can be used at construction sites, etc. It has the advantage of being easy to use.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing how to use the bending tool, FIG. 2 is a side view showing how the bending tool of the present invention is installed, FIG. 3 is a plan view, and FIG.
FIG. 5 is a side view showing a state in the middle of bending, and FIG. 5 is a perspective view of a rotating operation member showing another embodiment of the invention.
FIG. 6 is a perspective view showing how to use the rotating operation member shown in FIG. 5, FIG. 7 is a perspective view of a bending tool showing yet another embodiment of this invention, and FIG. , a side view showing the reinforcing bar arrangement structure in a block structure building, and FIG. 9 is a side view showing the reinforcing bar arrangement state at a stage before bending when bending is performed using the bending tool of the present invention. . 3...Horizontal reinforcement (bar-shaped material), 4...Vertical reinforcement (bar-shaped material),
11... Rotating operation member, 12... Holding member, 13
...Fully point engagement part, 14...Tip locking part, 19...
Contact portion, 20...Tip locking portion.

Claims (1)

[Scope of utility model registration request] A bending tool for bending one of a pair of bar-shaped materials arranged perpendicularly to each other using the other bar-shaped material as a fulcrum, the bending tool being rotatably extended to the outer periphery of the other bar-shaped material. By having a fulcrum engaging part that is fitted and engaged, and by locking the tip end locking part to one end side of the one rod-shaped member and rotating about the fulcrum engaging part, A rotating operation member that bends one end side, a part of which is brought into contact with the other bar-shaped member, and a tip locking portion is engaged with the other end of the one bar-shaped member, so that one of the rotating operation members A bending tool for a bar-shaped material such as a reinforcing bar, comprising a holding member for holding the other end of the bar-shaped material to prevent expansion or rotation during the bending.