JP2005232756A - Hooking reinforcement placing sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcement placing sheet easy to mount on a first reinforcement hooked on a second reinforcement for maintaining sound reinforcement placing function while effectively solving problems a hook of the first reinforcement is deformed and removed from the second reinforcement resulting from the fall of the reinforcement placing sheet off the first reinforcement due to the movement and the swell of a concrete encircled by the reinforcements. <P>SOLUTION: The reinforcement placing sheet 1 consists of thin sheet materials to be used when the hook 3 at the end of the first reinforcement 2 is hooked on the way of extension of the second reinforcement 4 and placed in engagement therewith. It comprises a first joint sheet 6 at one end, a second joint sheet 7 at the other end, rising from the end of the first joint sheet 6, a first joint hole 8 through which the hook 3 of the first reinforcement 2 is inserted into the first joint sheet 6, and a second joint hole 9 through which a hook ranging end 2a of the first reinforcement 2 is inserted into the second joint sheet 7. The second joint hole 9 has a reinforcement guide port 10 opened at one edge of the second joint sheet 7 and formed ranging to the inner end. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In the present invention, the end of the first reinforcing bar is bent into an L shape to form a hook, and the braid used when the L hook is hooked and engaged in the middle of the extending length of the second reinforcing bar. It relates to means.

  As shown in FIGS. 1A and 1B, the end of the first reinforcing bar 2 is bent into an L shape to form a hook 3, and the L shaped hook 3 is hooked and engaged in the middle of the extended length of the second reinforcing bar 4. When the braiding method is used, when a large load due to seismic force or the like is applied to the reinforced concrete member, the hook 3 is stretched in the direction of returning to the straight line due to the force that the inner concrete surrounded by the reinforcing bar protrudes. There is a problem in that the function of the braid is lost due to detachment from the reinforcing bar 4.

In Patent Document 1, as a braiding means for solving this problem, as shown in FIGS. 1A and 1B, a long elliptical ring 1 'made of a wire is formed, and the L-shaped hook 3 is attached to one end of the long elliptical ring 1'. A method of inserting the first reinforcing bar 2 into the second reinforcing bar 4 by inserting the hook continuous end 2 a of the first reinforcing bar 2 into the other end of the ring 1 ′ is provided.
JP 2003-253814 A

  However, in the braided structure using the long elliptical ring 1 ', a hole portion 9' for inserting the hook continuous end 2a of the first reinforcing bar 2 of the long elliptical ring 1 'and a hole portion 8' for inserting the hook 3 are provided. Since the long oval ring 1 ′ is in communication with each other, the oblong ring 1 ′ moves freely along the hook connecting end 2 a and the hook 3 of the first rebar 2, and the free end of the hook 3 of the first rebar 2 due to the movement. It has the problem that it escapes from it and impairs the braiding function.

  In order to solve this problem, as shown in Patent Document 1, one end and the other end of the ellipse ring 1 ′ are complicatedly bound to the hook 3 and the hook connecting end 2 a of the first rebar 2 by the wire 5. When the work is forced and the concrete surrounded by the reinforcing bars protrudes, the wire 5 is loosened or disconnected, and the braiding function is impaired.

  In addition, as shown in FIG. 3, in Patent Document 1, a hole through which the hook of the first reinforcing bar is inserted is formed at one end, and a hook to be hooked to the hook connecting end of the first reinforcing bar is formed at the other end. However, in this example as well, when the braiding tool moves upward along the hook of the first reinforcing bar, the hook of the braiding tool is detached from the hook connecting end of the first reinforcing bar. The same problem as the ellipse ring 1 'is inherent.

  The present invention provides a braided plate that fundamentally solves the above problems. The braiding plate is made of a narrow plate material, and has as its means a first joint plate and a second joint plate raised from the end of the first joint plate, and the first joint plate includes the first joint plate. Forming a first joint hole through which the hook of the reinforcing bar is inserted, and forming a second joint hole through which the hook connecting end of the first reinforcing bar is inserted into the second joint plate; Reinforcing bar introduction port that is opened at one side edge of the second joint plate is coupled to the inner end side of the steel plate, and a braided plate structure in which the second joint hole and the reinforcing bar introduction port are coupled in an L shape. .

  The rebar introduction port or the second joint hole is provided with a leaf spring, a protrusion or the like that prevents the first rebar from escaping from the rebar introduction port.

  The above-mentioned braiding plate is inserted into the first joint hole of the first joint plate while the hook of the first reinforcing bar is inserted into the first joint hole of the second joint plate, and the hook connecting end of the first reinforcing bar is aligned with the second joint hole. By introducing the first reinforcing bar, the work of braiding the first reinforcing bar to the second reinforcing bar can be easily performed.

  The hook of the first reinforcing bar is limited to the inner wall of the first joint hole, while the hook connecting end of the first reinforcing bar is formed on the inner wall of the second joint hole, particularly the connecting part of the second joint hole and the reinforcing bar introduction port. The movement is restricted by the inner wall of the stepped part, and the first joint hole, the second joint hole, and the reinforcing bar introduction port cooperate to drop the first reinforcing bar from the hook by the movement of the braided plate or the concrete surrounded by the reinforcing bar. This effectively eliminates the deformation of the hook of the first rebar and the problem of detachment from the second rebar due to the protrusion of the rod, and maintains the braiding function soundly. Further, it can be manufactured at a low cost by simply punching a metal plate.

  Further, the escape prevention of the first reinforcing bar from the reinforcing bar introduction port can be more effectively prevented by the retaining provided in the reinforcing bar introduction port or the second joint hole.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best embodiment of a braiding plate according to the present invention will be described with reference to FIGS.

  The braided plate 1 is formed by hooking an end portion of the first reinforcing bar 2 into an L shape to form a hook 3. ) Used when braiding.

  The braided plate 1 shown in FIGS. 2 and 3 is formed of a thin plate material punched from a metal plate, and the first joint plate is formed by bending the punched plate material into an L shape or a U shape. 6 and the second joint plate 7 is formed of the other bent plate. The waist bending angle is 90 to 135 degrees.

  Alternatively, the first and second joint plates 6 and 7 are formed by cutting the L-shaped channel into a narrow width, and further, first and second joint holes 8 and 9 described later on the first and second joint plates 6 and 7. The rebar introduction port 10 is formed by punching, and the entire L-shaped braiding plate 1 made of the plate material shown in FIGS. 2 to 5 is formed.

  Alternatively, the first and second joint plates 6 and 7 are formed by cutting the T-shaped channel into narrow widths, and further, first and second joint holes 8 and 9 described later on the first and second joint plates 6 and 7. The rebar introduction port 10 is punched and formed to form the entire T-shaped braiding plate 1 made of the plate material shown in FIG.

  The T-shaped braiding plate 1 has a pressure plate 14 extending from the connecting portion of the first and second joint plates 6 and 7 in the direction opposite to the second joint plate 7.

  Alternatively, as shown in FIG. 7, a flat plate material having a narrow width is punched into a U-shape, or the U-shaped channel is cut into a narrow width, and the first joint plate 6 is formed at the center plate portion. The second joint plate 7 is formed by the plate portion raised from the end portion of the one joint plate 6, and the pressure plate 15 is formed by the plate portion rising from the other end side of the first joint plate 6. A braiding plate 1 made of a shaped plate material is formed. The pressure plate 15 and the first joint plate 6 rise in the same direction and face each other.

  In any example, the braiding plate 1 includes a first joint plate 6 and a second joint plate 7 raised from the end of the first joint plate 6.

  As described above, the first joint plate 6 is formed with the first joint hole 8 through which the hook 3 of the first rebar 2 is inserted, and the hook of the first rebar 2 is connected to the second joint plate 7. A second joint hole 9 is formed through the end 2a.

  The first joint hole 8 is a circular hole having a diameter slightly larger than the diameter of the first rebar 2, and thus the diameter of the hook 3. The inner peripheral surface of the first joint hole 8 regulates the outer peripheral surface of the first rebar 2 and moves in the radial direction. Restrict movement of

  On the other hand, the second joint hole 9 is formed into an oblong hole elongated in the direction of the inner end and the outer end, and a reinforcing bar introduction port 10 that is opened at one side edge of the second joint plate 7 is coupled to the inner end of the second joint hole 9. . Therefore, the second joint hole 9 and the reinforcing bar introduction port 10 are notched holes that can communicate with each other in an L shape.

  Next, the installation work of the braiding plate 1 shown in FIGS. 2, 6, and 7 will be described to clarify the configuration.

  As shown in FIGS. 2A and 3A, the braiding plate 1 inserts the free end of the hook 3 into the first joint hole 8 of the first joint plate 6, and then, as shown in FIGS. 2B and 3B, The braiding plate 1 is moved upward along the hook 3, and the reinforcing bar introduction port 10 provided in the second joint plate 7 is aligned with the hook connecting end 2 a of the first reinforcing bar 2.

  Next, as shown in FIGS. 2C and 3C, the hook connecting end 2 a of the first rebar 2 is introduced from the side of the first joint plate 6 to the inner end of the second joint hole 9 via the rebar introduction port 10. To do.

  Next, as shown in FIGS. 2D and 3D, when the hand holding the braiding plate 1 is released, the entire braiding plate 1 is slightly lowered by its own weight along the hook 3, and the hook of the first reinforcing bar 2 The continuous end 2 a contacts the upper end of the second joint hole 9. Therefore, the braiding of the first reinforcing bar 2 with respect to the second reinforcing bar 4 is completed.

  The hook 3 is restricted from moving in the radial direction by the inner peripheral wall of the first joint hole 8, and the hook connecting end 2 a is restricted from moving up and down by the inner peripheral wall of the second joint hole 9. This effectively prevents the braiding muscle plate 1 from falling off or deflecting.

  The rebar introduction port 10 or the second joint hole 9 can be provided with a leaf spring 11 or a retaining member 11 such as a protrusion that prevents the first rebar 2 from escaping from the rebar introduction port 10.

  In FIG. 4, a protrusion 12 is provided on the inner wall on the inner end side of the second joint hole 9 as the retaining member 11. A pair of projections 12 are provided to face the opposing inner walls on the inner end side of the second joint hole 9. Alternatively, the projection 12 is provided only on one inner wall.

  The hook continuous end 2 a of the first rebar 2 is forced over the protrusion 12 and introduced into the upper end of the second joint hole 9.

  As shown in FIG. 5, a spring 13 made of a leaf spring or a wire rod spring that can be elastically displaced toward the inside of the introduction port is provided at the entrance of the reinforcing bar introduction port 10 as the retaining member 11. For example, a leaf spring or a wire spring is attached to one side edge of the second joint plate 7 that the introduction port 10 opens, and extends from the attachment portion toward the inlet of the introduction port 10.

  The hook connecting end 2a of the first reinforcing bar 2 is introduced into the introducing port 10 while elastically displacing the spring 13 inwardly of the reinforcing bar introducing port 10, and the connecting end 2a is the innermost portion of the introducing port 10, that is, the innermost part. When the second joint hole 9 is introduced to the lower end, the connecting end 2a is disengaged from the spring 13, and the spring 13 is self-recovered to prevent inadvertent escape from the connecting end 2a through the introduction port 10. Stop.

  The braiding plate 1 can be easily and quickly attached to the hook 3 of the first reinforcing bar 2 and the hook connecting end 2a.

  The hook 3 of the first rebar 2 is limited to the inner wall of the first joint hole 8, while the hook connecting end 2 a of the first rebar 2 is the inner wall of the second joint hole 9, particularly the inner end of the second joint hole 9. The wall 9a and the outer end wall, that is, the inner wall of the step portion formed in the connecting portion of the second joint hole 9 and the reinforcing bar introduction port 10, the inner wall on the opposite side, and the left and right inner walls continuous to the inner wall of the inner and outer ends The movement is limited, and by the cooperation of the first joint hole 8, the second joint hole 9, and the reinforcing bar introduction port 10, the problem that the braiding plate 1 moves unnecessarily and falls off the hook 3 is effectively eliminated. Make the braid function work without regret.

  Further, the plate structure of the braiding plate 1 and the cooperation of the first and second joint holes 8 and 9 and the reinforcing bar introduction port 10 effectively prevent the first reinforcing bar 2 from coming off the hook due to the movement of the braiding plate 1. In addition, it effectively eliminates the deformation of the hook 3 of the first rebar 2 and the problem of coming off from the second rebar 4 due to the protrusion of the concrete surrounded by the rebar by the restraint by the braiding plate 1 Keep it healthy.

  Further, the retaining rod 11 provided in the reinforcing bar inlet 10 or the second joint hole 9 can more effectively prevent the first reinforcing bar 2 from escaping from the reinforcing bar inlet 10.

A is a perspective view showing the state of the elliptical ring used for the conventional braid before the completion of attachment, and B is a perspective view showing the state after the attachment. FIGS. 4A to 4D are perspective views showing the mounting process of the L-shaped braiding plate according to the present invention in order of mounting. A thru | or D is a front view which shows the mounting process of the braiding plate concerning this invention in order of mounting. The front view of the braiding plate which shows one specific example of retaining. The front view of the braiding plate which shows the other specific example of retaining. The perspective view which shows a T form braiding board with the mounting state to a 1st reinforcing bar. The perspective view which shows a U-shaped braiding board with the mounting state to a 1st reinforcing bar.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Braiding plate, 2 ... 1st reinforcing bar, 2a ... Hook connection end, 3 ... Hook, 4 ... 2nd reinforcing bar, 6 ... 1st joint plate, 7 ... 2nd joint plate, 8 ... 1st joint hole, DESCRIPTION OF SYMBOLS 9 ... Second joint hole, 9a ... Inner end wall of second joint hole, 10 ... Reinforcing bar introduction port, 11 ... Retaining stopper, 12 ... Projection, 13 ... Spring, 14 ... Pressure plate, 15 ... Pressure plate

Claims (2)

From the narrow plate material used when the end of the first reinforcing bar is bent into an L shape to form a hook, and the L hook is hooked and engaged in the middle of the extended length of the second reinforcing bar. A braided plate comprising a first joint plate and a second joint plate raised from an end of the first joint plate, and the hook of the first rebar is inserted through the first joint plate The second joint plate has a second joint hole through which the hook connecting end of the first rebar is inserted, and a second joint plate on the inner end side of the second joint hole. A hooked reinforcing bar braided plate, which has a reinforcing bar opening that is open at one side edge. The hooked reinforcing bar braiding plate according to claim 1, wherein a stopper for preventing the first reinforcing bar from escaping from the reinforcing bar introduction port is provided in the reinforcing bar introduction port or the second joint hole.

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