DE8802453U1 - Plastic spacers for fixing one or more reinforcements during concreting - Google Patents

Description

.· . .'·, .*% Pipl.-lng. E, Bünemann

_2_ Osnabruck, 24 February 1988

H0JGAARD & SCHULTZ A/S, 2920 Charlottenlund, Denmark

Plastic spacers for fixing one or

e multiple reinforcements during concreting.

The innovation concerns a plastic

existing spacers for fixing one or

several crossed rods formed

Reinforcements when concreting in a form construction

and consisting of a rod-shaped body, which is

a at least one end leaning against the mold

and has grippers for snapping engagement with parts of the reinforcing rods.

Spacers of this type are easier and quicker to use than the previously used concrete spacer blocks with cast-in binding wires; one disadvantage of the previously known rod-shaped spacers is that they are designed to engage with only a single reinforcing rod, or - if the reinforcement is in two or more layers - with parallel rods in each layer. One consequence of this is that with certain casting work, e.g. when producing floor ceilings or elements for them, the desired fixation of the reinforcement or reinforcements cannot always be ensured even by using a relatively large number of spacers.

Different from the known version,

the spacer after the innovation by the fact that for any primary gripper oriented in one direction

on the body at least one in a right-angled

Direction-oriented secondary gripper with

&igr;! such a placement in relation to the primary

i| gripper is present, that the two grippers with each

30 its two intersecting reinforcement strands

can intervene at open intersections.

Os such a spacer at the same time

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If it grips two of the intersecting reinforcement bars, it will be prevented from turning or wobbling in relation to the reinforcement, even if there is reinforcement in only one layer, and it thus enables it to be held very stably in the mold construction.

An advantageous embodiment of the spacer according to the innovation is unique in that the body is designed as a &egr;&iacgr;&pgr;&egr; conductor^ in the in any case, one of the two cheeks carries at least one primary, bow-shaped gripper oriented away from the other cheek, located opposite a ladder step, which, like two neighboring steps, has sideways projections in relation to the cheeks and that the two adjacent steps have flexible tabs at the ends of their projecting parts, which are directed towards the first-mentioned ladder step.

In this embodiment, the spacer

made of suitable plastic in a relatively simple two-part mold, and the material requirement can be kept low to achieve the desired strength and stiffness of the holder. By using such a spacer, the or each bow-shaped The gripper must first be snapped onto the corresponding reinforcement rod at a certain distance from a crossing point, after which the spacer is moved towards this point until the ladder step opposite the bracket and the one of their neighboring steps, deforming the flexible tab of the neighboring step, grip the crossing reinforcement rod. In this position, the other neighboring step is in and of itself superfluous, but it allows for a greater general or universal usability of the

spacer.

An embodiment of the spacer according to the innovation is shown in the drawing, where

Fig. 1 and 2 two mutually perpendicular

lit 4 » · ·

II III« ·· ··

Show side images of the Heitere and with parts of two crossing reinforcement rods indicated in Fig. 2, and Fig. 3 shows a corresponding end image. In the embodiment shown, the spacer has a body 1 with a shape of a ladder, the cheeks Z and 3 of which have two grippers 4 or a single such gripper 5. The number of grippers and their mutual distances can be adjusted according to a given task. Normal wise only one or more grippers turning to one side will be used, and according to Fig. 2 this only applies to the upper gripper 4, because it is assumed that the holder has a single layer consisting of crossing rods 6 and 7.

reinforcement should be fixed.

The grippers 4 and 5 are the primary grippers mentioned above and in the embodiment shown they are cast in one piece with the associated cheek 2 or 3 and have a bow shape with some elastic tips 8 pointing inwards from the ends of the stirrup branches. This allows the grippers to be used together with reinforcing rods 6 in a fairly large diameter range.

The grippers 4 and 5 are in relation to the

cheeks 2 and 3 are offset to one side or the other, and opposite each gripper there is a ladder step 9 or 9 ¹ in the body 1, which projects sideways to the side opposite the respective gripper 4 or 5. The on each side of such a step 9 or 9*, the ladder step 10 or 10* protrudes to the same side as the corresponding step 9 or 9 ¹ at a distance which is substantially larger than the diameter of the reinforcing rod 7; however, at the ends of the protruding parts, these neighboring steps fen flexible tabs 11 which are directed towards the middle step 9 or 9' and leave only a gap of which the diameter is smaller than the rod diameter.

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In Tig. 2 it is assumed that the reinforcement rod 7 is in front of the spacer, i.e. in Tig. 1 to the left of the holder. The holder is first snapped onto the reinforcement rod 6 with the upper primary gripper 4 and is then moved along this rod in the direction towards the rod 7 until the latter is between the upper middle step 9 and the tabs 11 on the opposite neighboring step 10 n» f of->n»!-> Uf n>ooo Toiio &agr; in

a secondary gripper, the tabs 11 of which fold or nestle around the reinforcing rod 7 in the final position, thereby contributing to the desired fixation.

Claims (2)

Osnabrück, February 24, 1988 VB/Ki H0JGAARD & SCHULTZ A/S, 2920 Charlottenlund, Denmark Plastic spacers for fixing one or more reinforcements during concreting. PROTECTION CLAIMS 1. Plastic spacer for fixing one or more reinforcements formed from intersecting rods (6, 7) during concreting in a mold construction and consisting of a rod-shaped body (1) which can lean with at least one end on the mold and has grippers for snapping engagement with parts of the reinforcement rods, characterized in that for each primary gripper (4 or 5) oriented in one direction on the body (1) at least one secondary gripper (9, 10, 11 or 9', 10', 11) oriented at right angles thereto is provided with such a placement in relation to the primary gripper that the two grippers can each engage with two intersecting reinforcing rods (6, 7) at their intersection point. 2. Spacer according to claim 1, characterized in that the body (1) is designed as a ladder in which at least one of the two cheeks (2. 3) carries at least one primary, bow-shaped gripper (4 or 5) oriented away from the other cheek and located opposite a ladder step (9 or 9'), the ladder step (9 or 9') as well as two adjacent steps (10 or 10') having sideways projections in relation to the cheeks, and that the two adjacent steps have flexible tabs (11) at the ends of their projecting parts, which are directed towards the first-mentioned ladder step (9 or 9').