JP3001436U - Tool for preventing deformation of hoses for forming through holes in concrete blocks - Google Patents

Abstract

(57) [Abstract] [Purpose] When forming a through hole of a concrete block having a through hole, it can be easily attached to and detached from the through hole forming hose, and the vinyl hose is crushed when pouring concrete into the formwork. And prevent deformation of bending. [Structure] The pipe 1 is divided into three equal parts in the circumferential direction and the core rod 2 is passed through the center. Left and right screw parts 3 and 4 are provided at opposite ends of the core rod 2, and nuts 5 are provided on the screw parts 3 and 4, respectively. A bracket 6 and a bracket 9 are provided at the center of the inner width of the nut 5 and the equally divided pipe piece 1A, and a connecting rod 8 is pivotally supported 9 between the brackets 6 and 7. The collar 12 is fixed to both sides of the core rod 2, and a movement preventing stopper 13 that engages with the collar 12 is provided inside the pipe piece 1A, and any one of the equally divided pipe pieces 1A is provided near the mouth end. Rotating rod 14 that engages a stopper 15 provided on the form B
To provide. The pipe 1 is contracted or expanded by rotating the core rod 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a deformation preventive tool for a vinyl hose used when forming a through hole of a concrete block having a through hole for draining water, inserting a connecting reinforcing bar, inserting a positioning reinforcing bar, and the like.

[0002]

[Prior art]

 Conventionally, when forming a concrete block with through holes, a vinyl hose is passed from one hole of the formwork to the other, and a round pipe is inserted into the vinyl hose so that the rubber hose does not lose its shape when concrete is poured. It was When a round pipe with an outer diameter close to the inner diameter of the vinyl hose is inserted into the vinyl hose, ordered through holes are formed along the outer diameter of the vinyl hose, but it is very difficult to insert the round pipe. On the contrary, a round pipe with an outer diameter much smaller than the inner diameter of the vinyl hose is easy to insert, but if there is too much space between the inner diameter of the vinyl hose and the round pipe, the vinyl hose may be partially crushed or bent. It occurs, deforms, and is difficult to slip out.

[0003]

[Problems to be solved by the device]

 From the above points, the present invention is easy to attach and detach in the vinyl hose for forming through holes when forming a concrete block having through holes for draining water, inserting connecting reinforcing bars, inserting positioning reinforcing bars, etc. An object of the present invention is to provide a deformation preventive tool that does not cause deformation such as crushing or bending of a vinyl hose.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a core rod that is inserted through the center of a pipe that is divided into three equal parts in the circumferential direction, has a threaded portion at one end of the core rod, and a front end at the other end. The screw part of the notation screw part and the screw part of the reverse screw are provided, the nuts are screwed into both the screw parts, and the bracket is provided at the inner center of the width of the nut and the equally divided pipe piece, respectively. The ends of the connecting rods are rotatably supported, flanges are fixed to both sides of the core rod, and movement preventing stoppers that engage with the flanges are provided inside the pipe pieces. In the vicinity of the mouth end of the outer circumference, a rotation preventing rod that engages with a stopper provided on the mold is provided.

[0005]

[Action]

 To explain the operation of the present invention, when the mandrel is rotated by the handle, the nuts screwed into the screw parts at both ends of the mandrel move, and the pipe divided into equal parts by raising or tilting the connecting rod is removed. Expand or shrink the diameter. Therefore, when the device of the present invention is inserted into the vinyl hose provided in the hole of the form, it is easy to rotate the core rod in the direction of tilting the connecting rod and insert it with the pipe diameter reduced. It is inserted in the vinyl hose.

[0006] After the insertion, when the core rod is rotated in the direction to erect the connecting rod, the diameter of the pipe is expanded and comes into contact with the inner diameter of the vinyl hose. Therefore, the vinyl hose retains its shape and is partially crushed. Also, no bending occurs.

When the device of the present invention is to be pulled out, the core rod can be rotated to tilt the connecting rod and the pipe can be reduced to easily pull out the device. During rotation of the core rod, the flanges are fixed on both sides of the core rod, and the flanges engage with the movement prevention stoppers provided inside the pipe pieces, so that the core rod does not move in the longitudinal direction. In addition, a detent rod is provided near the mouth end of the outer periphery of the pipe piece of the equally divided pipe, and the detent rod engages with a stopper provided on the mold to guide the pipe in the circumferential direction. Prevent rotation. The detent rod also has the function of a handle when the device of the present invention is pulled out from the vinyl hose.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical side view showing an embodiment of the device of the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a plan view showing a usage state of the same. 1A in the drawing is a pipe piece obtained by dividing the pipe 1 into three equal parts in the circumferential direction, and the core rod 2 is inserted through the center of the pipe 1. A screw portion 3 is provided at one end of the core rod 2, and a screw portion 3 and a screw portion 4 of a reverse screw are provided at the other end. A nut 5 is screwed on the screw portion 3 and the screw portion 4.

Reference numeral 6 denotes a bracket provided inside the pipe piece 1 A and at the center of the width of the pipe piece 1 A, and a bracket 7 is provided on the nut 5 corresponding to the bracket 6. Reference numeral 8 is a connecting rod which is pivotally supported at its end between the bracket 6 and the bracket 7.

Reference numeral 10 is a nut fixed to one end of the core rod 2 by welding, and a handle 11 is fitted therein. Reference numeral 12 denotes a circular brim that is fixed to both sides of the core rod 2 by welding, and a movement-preventing stopper formed in a protruding shape that engages with the brim 12 at an appropriate position inside the pipe piece 1A inside the brim 12. 13 are provided. Reference numeral 14 is an L-shaped locking rod provided near the outside mouth end of one piece of pipe 1A, and the tip of the locking rod 14 is fitted to a stopper 15 made of two pieces provided on the form B. To meet. In the figure, C is a vinyl hose.

[0010]

[Effect of device]

 According to the present invention, when the hose for forming the through hole is inserted into or withdrawn from the vinyl hose, the diameter of the pipe of the device of the present invention is reduced to be inserted or withdrawn, and after the insertion, the diameter of the pipe is expanded. Since it contacts the inner diameter of the vinyl hose, it is easy to put on and take off the device of the present invention. This is a useful invention that is suitable for forming a concrete block having through holes of an orderly type and having through holes for draining water, inserting connecting reinforcing bars, inserting positioning reinforcing bars, etc.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an embodiment of a deformation preventive tool of the present invention.

FIG. 2 is a front view showing an embodiment of the deformation preventive tool of the present invention.

FIG. 3 is a plan view showing a usage state of the deformation preventive tool of the present invention.

[Explanation of symbols]

 1 Pipe 1A Pipe Piece 2 Core Rod 3 Screw Part 4 Reverse Screw Screw Part 5 Nut 6 Bracket 7 Bracket 8 Connection Rod 9 Shaft Support 12 Collar 13 Stopping Stopper 14 Stopper Rod 15 Stopper B Form C Vinyl Hose

Claims (1)

[Scope of utility model registration request] 1. A core rod is inserted through the center of a pipe divided into three equal parts in the circumferential direction, a screw portion is provided at one end of the core rod, and the screw portion and a reverse screw are provided at the other end. Screw parts are provided, nuts are screwed into both screw parts, and a bracket is provided in each of the nut and the equally divided pipe piece at the center of the inner width of the pipe piece. While being rotatably supported, flanges are fixed on both sides of the core rod, and stoppers for preventing movement that engage with the flanges are provided inside the pipe piece, and appropriately near the mouth end of the outer periphery of the pipe piece. ,
A tool for preventing deformation of a hose for forming a through hole in a concrete block, characterized in that a rotation-stopping rod that engages with a stopper provided on a mold is provided.