JPS6085150A - Spacer for iron reinforcement - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spacer for reinforcing bars, in particular for reinforcing bars installed horizontally in a concrete ceiling. For this purpose, three-dimensional spacer-shaped shrines are already known. This profile has a hook-shaped open receptacle near its underside. This storage part grabs the reinforcing bar when the section is tilted,
Each turn of the profile serves to lift the reinforcing mat a predetermined distance from the external surface of the concrete structure to be constructed. By configuring the lower connecting rods extending between the plurality of receptacle hooks to the ends of the H shape to be curved in the horizontal plane, and the vertical rods extending vertically or diagonally to the desired distance from the outer surface of the construction. By arranging it projecting onto a correspondingly horizontal lower connecting rod 1, such a spacer profile can be placed in its vertical position and thereby in a position that biases the lifted lower mat. Take a stable posture. Another horizontal bar extending near one end of the vertical bar provides the section with sufficient bending strength in the vertical plane, while at the same time providing support for the lower mat defined by the length of each of the vertical bars. The second reinforcing pine 1- is placed at a distance from the second reinforcing pine 1-. However, in the case of known spacers of this kind, for example from EP 0 036 125, the lower reinforcing mat easily slips out of the open receptacle fittings, especially when walking on its two sides, and the outer surfaces of the mat and the concrete structure The disadvantage is that the positions of M and L must be carefully inspected and corrected if necessary in order to make the distance between them uniform.

It is an object of the present invention to ensure that the reinforcing bar gripped by the storage part never comes off, so that the distance between the entire reinforcing bar mantle and the outer surface of the structure can be accurately and uniformly maintained without additional time and work costs. The first step is to create a spacer of the kind described above that holds it in place. This object is achieved by the features specified in the patent claims. At the same time, this feature
To facilitate and simplify the handling of a spacer when it is filled with aluminum and manufactured.

Preferred features of the spacer according to the invention emerge from the features of the patent claims and from the following description of two exemplary embodiments based on seven figures.

In the case of the embodiment of the spacer according to the invention shown in FIGS. 1 to 4, three upright legs 6.6"
, 6 and both support legs 5 which are at least co-terminus -2 in the second plane.
are fixedly connected to the lower and upper horizontal rods 1.4, l, and in particular to one another by welding. Therefore, the standing legs and supporting legs are the lower side and the lower side when building a reinforced concrete structure. 11+1 reinforcement mat i.e. wire lath M
u, forming a stable steric support for the Mo rods. In order to easily and quickly place the lower reinforcing mat Mu planted on the formwork S by a predetermined distance from the formwork S, a member 1 acting in one direction is used.
A steel spring element 7 with an F element 8 is mounted on the central upright leg 6' of the spacer. Thereby, the spacer) grips the rod of the mat Mu with its pointed arm 11 in a position inclined approximately 90 degrees from the position shown, around the support points of the "legs 6, 6", and the spacer is moved into the position shown. When aligning to the position, hold it so that it is a distance of 4-1 from the formwork S. In this case, the bent part 12 of the outer upright leg 6, which is designed to be retracted to the rear, is connected to the steel spring element 7.
Lower reinforcing mat Mu irremovably held by 8
forming an additional support 13 for the rod. Bend 1 of the upper horizontal bar 4 best shown in the plan view of FIG.
5 serves as a handle when gripping the zelkova 14 of the lower pine l-M u and when aligning the spacer with the lower side 77) lifted into the working position shown. - The upper wire rod 4 is the second 1- side reinforcing pine) MO and the lower reinforcing pine l-M
It serves to support each of the standing legs 6.6" apart from the u.

The somewhat modified embodiment of FIGS. 4 to 7 is such that the central upright leg 6', which has a unidirectionally acting steel spring element 7 with two connecting elements 8, connects the horizontal connecting rods 1, 4, e.g. It differs from the embodiment of FIGS. 1 to 4 only in that it is slightly offset from the neighboring upright leg 6.6 by being bent by a small angle of 5 degrees.

By shifting the center leg 6 in this manner, the rod of the lower mat M IJ gripped by the locking element 8 of the steel spring element will shift when lifted, as shown in FIG. By aligning the spacer while tilting the lower end of the spacer 6 as the center, the spacer is simultaneously deformed to a certain degree. This deformation further strengthens the frictional connection between the spacer and the rod of the lower reinforcing mantle lifted by the spacer. This connection, in conjunction with the complementary retention of the central leg by 6°, effectively prevents the spacer from tilting even when walking on the reinforcing mat 1.

[Brief explanation of the drawing]

FIG. 1 is a front view of a spacer according to the present invention, and FIG. 2 is a front view of a spacer according to the present invention.
Figure 3 is a side view of the spacer, Figure 4 is a diagram of the spacer in Figure 2 cut along the -rV line, Figure 5 is the rF of the spacer that has been slightly deformed. side view,
FIG. 6C is a plan view of the same spacer as FIG. 5, and FIG. 7 is a side view of the spacer. 6.6”... Standing leg 7... Steel spring element 8... Part 11-element 12... Bending part 13... Placement part 14
... Bar Mo... 1-Example reinforcing mat M u... Lower reinforcing mano L ~ S... Engraving of formwork drawing (no changes to the contents) 1st drawing 1'rI Mi Thread 5 October 22, 1980 Manabu Shiga, Commissioner of the Patent Office, 41 indications 1982 Patent Application No. 173454 2 Name of invention Spacer for reinforcing bars: 3. Person making the amendment + j matters and what relationship Patent applicant name: Zelma Dreiller 4, agent address: Kaji Ni-ni-gyo Building, 2-32-4 Nishi-Shinbashi, Minato-ku, Tokyo 105 Sho (433) 4564 Showa Year Month 11 Shipping 11 Showa Year/Month F1 6, Supplement 11- subject priority certificate, Drawing 7, contents of amendment as attached (Engraving of drawing, no change in contents)

Claims (1)

[Scope of Claims] il+ is formed as a three-dimensional profile, and this profile is provided with an accommodation section, which accommodation section is provided near the bottom of the upright leg together with the stretched lower mat rod, and the spacer Hold the bar at an angle of about 90 degrees, and when aligning it vertically, hold the bar at 4i/2, a predetermined distance from the formwork, and hold it there. At the same time, the second upper reinforcing mat is placed on (1+) and consists of supplementary material A,
In spacers for reinforcing bars, especially reinforcing bars incorporated in concrete ceilings, which are installed at a height that matches the thickness of the concrete member to be constructed, the element (8) acting in one direction is used. ) is provided approximately perpendicular to the plane of the vertical foot on the central foot (6°), the other foot 1j (6) is provided with a steel spring element (
7) The lower reinforcing mano l (Mu) is irremovably inserted into the
A spacer characterized in that it is provided with another mounting part (13) formed by a bent part (12) for a keyaki (14). (2) The upper horizontal bar (4) is a steel spring element (7°8)
The spacer according to claim 1, characterized in that a bent portion (15) is provided in the region of the central standing leg (6゛) with a bending portion (15) serving as a handle for inserting the spacer and aligning the spacer. . (3) unidirectionally acting hook-shaped steel spring elements (7,
The central standing leg (6゛) with the horizontal connecting rod (1
, '4) is placed slightly offset from the adjacent upright leg (6) in the vertical plane, and the horizontal connecting rod (
1, 4) are bent towards the outer stand 11111 (5, 5) at the point of connection with the upright legs (6, 6) at a large angle of approximately 45 degrees. spacer.