JP3850238B2 - Metal fittings for reinforcing bars and separators - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting metal fitting used to connect a separator for positioning a form plate to a reinforcing bar when assembling a concrete mold for constructing a reinforced concrete structure.
[0002]
[Prior art]
Conventionally, when connecting a separator for positioning a form plate to a reinforcing bar, one end of the separator of the required length was welded directly to the reinforcing bar at the site, so a welding machine had to be brought to the site, and a welding engineer also It is necessary and the biggest problem is that once the welded separator orientation is incompatible and the separator orientation has to be adjusted, it is necessary to bend the separator, etc. It was difficult to determine the position and orientation of the separator with high accuracy.
[0003]
[Means for Solving the Problems]
An object of the present invention is to provide a connecting metal fitting between a reinforcing bar and a separator that can solve the above-described conventional problems, and the means thereof is shown with reference numerals of embodiments to be described later. And a main body 1, a bolt 2, and a rotating shaft 3. The main body 1 includes an upper part 5 having a through screw hole 4, a side part 6 that is connected substantially perpendicularly from one end of the upper part 5, and the side part 6. And a V-shaped reinforcing bar receiving portion 7 which is continuous from the free end of the upper portion 5 to the side where the upper portion 5 is provided and which is opposed to the upper portion 5, and the bolt 2 is threaded into the through screw hole 4 of the upper portion 5 of the main body. The tip pressing portion 2a presses and fixes the reinforcing bar 8 fitted to the reinforcing bar receiving portion 7 in a state of being penetrated, and the rotary shaft 3 has its axis 3a oriented perpendicular to the surface of the main body 1 and the axis. 3a is supported by the main body 1 so as to be able to rotate around the axis 3a, and is perpendicular to the axis 3a. A connecting fitting of the reinforcing bars and the separator having a separator connecting tapped hole 9 of the body 1 is provided with a flat projecting curved rib 10 which projects continuously and outwardly from the top 5 to the V-shaped reinforcement receiving portions 7 The rotary shaft 3 has an inner end formed at a portion protruding outward from the main body 1 and a flange portion 13 for preventing the outer shaft from loosely fitting into the inner groove portion 10a of the flat protruding rib 10 at the inner end thereof. It is the structure provided with the convex part 14 for retaining .
[0004]
In carrying out the present invention having the above-described configuration, the rotary shaft 3 can be attached to the main body side portion 6, and the main shaft side of the two oblique sides 7 a and 7 b in the V-shaped reinforcing bar receiving portion 7 of the main body 1 part Ru can also be attached to the 6 side of the inclined portion 7a.
[0005]
Further, when the rotary shaft 3 is supported so that its axis 3a is perpendicular to the V-shaped reinforcing bar receiving portion 7, a retaining flange portion 13 to the outside of the rotating shaft 3 is provided with a V-shaped reinforcing bar receiving portion. It can comprise so that it may contact with the reinforcing bar 8 fitted to 7.
[0006]
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, 1 is a main body, 2 is a bolt, and 3 is a rotating shaft. The main body 1 is connected to the upper part 5 having the through screw hole 4, the side part 6 connected substantially perpendicularly from one end of the upper part 5, and the free end of the side part 6 to the side where the upper part 5 is located, and A bolt-shaped reinforcing bar receiving portion 7 whose side facing the upper portion 5 is recessed, and the bolt 2 is threaded through the through screw hole 4 of the main body upper portion 5 so that the tip pressing portion 2a has the V-shaped reinforcing bar receiving portion. The rebar 8 fitted to the portion 7 is pressed and fixed, and the rotary shaft 3 is supported by the main body 1 so that its axis 3a is perpendicular to the main body side portion 6 and can rotate around the axis 3a. The separator has a screw hole 9 for connecting the separator perpendicular to the axis 3a.
[0007]
More specifically, the main body 1 is formed with flat protruding ribs 10 that extend from the upper portion 5 to the V-shaped reinforcing bar receiving portion 7 and protrude outward, and the through screw holes 4 are formed on the upper portion 5 of the main body 5. The short cylindrical part 11 integrally formed inward from the flat protruding rib 10 is formed by machining a screw groove inside, but depending on the thickness of the metal plate constituting the main body 1, a screw hole is simply machined. Alternatively, the nut may be welded concentrically with the through hole provided in the upper portion 5 of the main body.
[0008]
The rotating shaft 3 is inserted through a through hole 12 provided in the flat protruding rib 10 of the main body side portion 6 from the inside, and is loosely fitted in the inner groove portion 10a of the flat protruding rib 10 at an inner end thereof. A flange portion 13 for retaining the outer side is integrally formed, and is provided at a portion protruding outward from the main body side portion 6, and a convex portion for retaining the inner side from the rear, in the illustrated example, at two locations in the diameter direction of the tip portion. A retaining projection 14 is formed and assembled to the main body 1 so as not to fall off.
[0009]
The method of using the connection fitting having the above-described configuration will be described. Of the reinforcing bars already arranged at predetermined positions, the main body 1 is placed on the reinforcing bar 8 at an appropriate position, inside the V-shaped reinforcing bar receiving portion 7, that is, both oblique sides thereof. 7a and 7b are fitted so that the rebar 8 comes into contact with each other, the bolt 2 is tightened, and the rebar 8 is sandwiched between the tip pressing portion 2a of the bolt 2 and the V-shaped rebar receiving portion 7, thereby 1 is fixed to the reinforcing bar 8. Then, the one-end screw shaft portion of the separator 15 having a required length is screwed and fastened to the separator connecting screw hole 9 of the rotating shaft 3 to connect the separator 15 to the main body 1.
[0010]
As a result of the above operation, one end of the separator 15 is connected to a predetermined position of the reinforcing bar 8. At this time, the separator 15 is rotated around the axis 3 a of the rotating shaft 3 together with the rotating shaft 3. Therefore, a concrete form plate may be attached to the other end portion of the separator 15 by a conventional method with the separator 15 adjusted to a required direction. Also, by loosening the bolt 2, the position of the separator 15 together with the main body 1 can be adjusted in the length direction of the reinforcing bar 8.
[0011]
As shown in FIG. 4, the rotation shaft 3 has a shaft center 3 a at the hypotenuse part 7 a on the main body side part 6 side of the hypotenuse parts 7 a and 7 b of the V-shaped reinforcing bar receiving part 7 of the main body 1. It can also be attached so as to be perpendicular to the oblique side portion 7a.
[0012]
In this case, the retaining flange portion 13 at the inner end of the rotating shaft 3 may be configured to be completely loosely fitted in the inner groove portion 10a of the flat bent rib 10, but as shown in the drawing, The end surface is configured to be flush with or slightly projecting from the opening end of the inner groove portion 10 a of the flat bent rib 10 (inner side surface of the oblique side portion 7 a), and at both oblique side portions 7 a and 7 b of the V-shaped reinforcing bar receiving portion 7. It can comprise so that the surrounding surface of the rebar 8 received and the end surface of the flange part 13 may contact | abut. According to this configuration, by fixing the main body 1 to the reinforcing bar 8 with the bolt 2, the rotational resistance of the rotary shaft 3 is increased by friction between the reinforcing bar 8 and the flange portion 13. The orientation can be determined to some extent, and it is not necessary for the operator to hold the separator 15 by hand inside the form plate (separator side) to regulate the orientation, thereby improving workability.
[0013]
【The invention's effect】
The connecting metal fitting of the reinforcing bar and separator according to the present invention can be implemented and used as described above. According to the connecting metal fitting of the present invention, the main body includes the V-shaped reinforcing bar receiving portion and the bolt. Is fixed at an arbitrary position in the longitudinal direction of the reinforcing bar, and the one end screw shaft portion of the separator of the required length is screwed and connected to the separator connecting screw hole of the rotating shaft supported by the main body, The separator can be connected to a reinforcing bar. Moreover, the position and orientation of the separator can be freely changed and determined by combining adjustment of the main body fixing position in the length direction of the reinforcing bar, adjustment of the main body fixing direction around the reinforcing bar axis, rotation of the rotating shaft with respect to the main body, and the like. I can do it. Therefore, it is possible to perform the attaching operation of the separator to the reinforcing bar including the change of the position and orientation of the separator after the attachment very easily, efficiently, and very accurately. Furthermore, according to the configuration of the present invention, not only can the required strength be obtained even if the main body is formed of a relatively thin metal plate, but also the flange portion for retaining the outer side of the rotating shaft does not protrude to the inner side of the main body. Thus, the rebar can be easily fitted into the main body.
[0014]
In addition, according to the structure of Claim 2, it is easy to attach the said rotating shaft to a main body, and according to the structure of Claim 3, a separator becomes obstructive at the time of operation of a volt | bolt irrespective of the direction of a separator. less likely to become, the operation of the bolt is Ru easy to.
[0015]
Further, according to the configuration of the fourth aspect, as described in the description of the embodiment, the rotational resistance of the rotating shaft increases due to the friction between the reinforcing bar and the flange portion of the inner end of the rotating shaft. The direction of the separator coupled to the shaft can be determined to some extent, and it is not necessary for the operator to hold the separator by hand inside the formwork plate (separator side) to regulate the direction, improving workability. To do.
[Brief description of the drawings]
FIG. 1 is a partially longitudinal side view showing a first embodiment.
FIG. 2 is a plan view of the same.
FIG. 3 is a front view of the same.
FIG. 4 is a partially longitudinal side view showing a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Bolt 3 Rotating shaft 4 Through screw hole 5 Main body upper part 6 Main body side part 7 V-shaped reinforcing bar receiving part 7a, 7b The hypotenuse part 8 V-shaped reinforcing bar receiving part Reinforcing bar 9 Separator connecting screw hole 10 Flat protruding rib 10a Inside Groove part 13 Outward retaining flange part 14 Inner retaining convex part 15 Separator

Claims (4)

The main body comprises a main body, a bolt, and a rotating shaft. The main body is connected to an upper portion having a through screw hole, a side portion connected substantially perpendicularly from one end of the upper portion, and a free end of the side portion to a side on which the upper portion is located. And a V-shaped reinforcing bar receiving part that is recessed on the side facing the upper part, and the bolt is fitted into the reinforcing bar receiving part with the tip pressing part in a state of being threaded through the through screw hole in the upper part of the main body. The rebar is pressed and fixed, and the rotation shaft is supported by the main body so that its axis is perpendicular to the surface of the main body and can rotate around the axis. It is a connecting metal fitting of a reinforcing bar having a connecting screw hole and a separator,
The main body includes a flat bent rib that continues from the upper part to the V-shaped reinforcing bar receiving portion and protrudes outward, and the rotating shaft is outwardly fitted into an inner groove portion of the flat bent rib at an inner end thereof. A metal fitting for connecting a reinforcing bar and a separator, comprising: a flange portion for retaining the flange, and an inward retaining convex portion formed at a portion protruding outward from the main body .   The connecting fitting of the reinforcing bar and the separator according to claim 1, wherein the rotating shaft is attached to the side of the main body.   The rebar-separator metal fitting according to claim 1, wherein the rotation shaft is attached to a hypotenuse on the main body side portion of both hypotenuses of the V-shaped rebar receiving portion of the main body. The rebar-separator connecting bracket according to claim 1 , wherein a flange portion for preventing the outer side of the rotating shaft from coming into contact with a rebar fitted into the V-shaped rebar receiving portion .

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