DE7408515U - Plastic spacers for concrete rebar - Google Patents

Description

• ·

PATENT ADVERTISEMENT DlPL.-lNG. H. J. INGRISCH D - 56 WUPPERTAL'ELBERFELD. WALL 27 / ΖΘ

Wuppertal 1 _t March 11, 1974 12 / s / 5321

Utility model registration Attorney File No. 5321 Hans-Werner pause. Wuppertal-Barmen

Plastic spacers for concrete rebar

The invention relates to a spacer made of plastic for concrete rebar, consisting of a massive, perforated or rib-shaped Seheibe sit one central opening to accommodate the reinforcement iron and a slot leading into the central opening *

Disc-shaped spacers have long been known in a wide variety of designs. They have also more or less proven themselves in practice. One that has not yet been resolved The problem is the relatively tedious and labor-intensive attachment of the spacers to the reinforcing bars, what namely so far had to be done exclusively by attaching tape.

Although ea are already spacer blockformigen structure that can be applied to the reinforcing bars by means of mounting devices _f However, these spacers do not disc-shaped uad Jaur find use in reinforcing bars, which on

740851S18.7.74

• · * «it ··

t ♦ πι

the formwork of ceilings and the like.

The assembly of disc-shaped spacers by means of mechanical devices was previously not possible, »that is Problem of aligning the spacers with the slot opening on the rebar was not mastered.

The invention is accordingly based on the object of creating or designing a disc-shaped spacer so that it can be applied to reinforcing iron by machine can.

Starting from a spacer of the type mentioned above; this object is achieved according to the invention in that to the central opening is injection molded into a frame protruding vertically from the plane of the pane, which circumscribes a rectangle and its long sides with the seat center line Form a 90 ° angle. According to this invention Measure is the spacer both in the magazine well as also in the exit shaft of an assembly betrayal tang direction-oriented · Hit in other words: the spacer has in the magazine shaft only freedom of movement from top to bottom UBd in the exit sehaeht only such in Hichtusg on the Rebar. Sine twist of the spacer, which the Bl »fähngssefalitz could lead away from the rebar is not possible, © he Bahmen doesn’t have our own FS &

HMS11 im. »

function _? but it also allows the jaws of the device slide, which press it onto the reinforcing bar, to attack. Finally, the frame provides the spacer with particularly good transverse stability and torsional rigidity.

The frame expediently runs around and is only in the area of the inflation seat is interrupted. The frame have clamping arms for the reinforcement bar that are formed directly at their ends that taper off at the insertion slot, which protrude into the central opening and their mutually facing sides are equipped with teeth, knobs or the like so that the spacer nielic can easily be removed from the Reinforcing bar can slip off *

But it is also within the scope of the invention, the scope several times to train interrupted. In its simplest form, it then only consists of the corners of a rectangle enclosing elbows or from tenons protruding vertically from the planes of the window pane.

A particularly expedient development of the invention provides suggest that several identically designed spacers are connected to one another in a chain-like manner by relatively thin connections. As a result, the filling insert of the spacers into the assembly drive unit much iced,

- ι

-A-

Eer the subject of the invention is based on the Drawing, on the exemplary embodiments are shown, explained in more detail. Show:

Fig. 1 is a perspective basic view of a spacer according to the invention,

Fig. 2 is a front view of the spacing according to Fig. 1

3 and 4 modified embodiments of the spacer according to FIG. 1,

Fig. 5 chain-like interconnected spacers according to the invention,

Fig. 6 is a mounting device introduced spacing,

7 shows a section along the line VII-VII in FIG. 6,

8 shows a spacer applied to a reinforcing bar, and FIG

9 shows a detail of the device according to FIGS. 6 to 8.

! The novel spacer is in a manner known per se

; disc-shaped. He has a central public

: tion 10 for the rebar 11 and one to the outside

'mouth-shaped widening insertion slot 12 for the last

ren.

TTm the central opening 10 is a web 13 arranged, the emerges vertically from the disc planes and a "real

- ⁵ - j

corner circumscribes. The frame 13 is at least in the area of the insertion slot 12 interrupted. The long frame sides each form a 90 angle with the imaginary slot center line. Spacer washer and frame 13 form a one-piece unit.

e.g. I.

J and 2 show that the frame 13 has clamping arms H molded directly at its ends ending at the insertion slot, which protrude into the central opening and whose sides facing one another are equipped with teeth 15, knobs or the like. With these clamping arms H ' , the spacer is fixed captive on the reinforcing rod 11 (see. Pig. 8). j

The spacer disc can be solid (Pig. 4) rib-shaped j (not shown) or perforated (see, for example, Pig. 1 to 3) j. Also of which the central opening 10 j

i surrounding collar or frame 13, thickened stiffening ribs 16j go out. The outer contour of the spacer can be the Dar- | Positions according to Pig. 1 to 4 correspond; however, are also other forms of training z. B. polygon possible.

The collar or frame 13 circumscribing a rectangle is considered essential to the invention; because this only allows' a mechanical attachment of the spacers on reinforcement

rods. The collar 13 ensures a direction-oriented

74üf1Sit? .M

th transport of the spacers in an assembly device The loose frame sides create a twist-proof guide the spacer in a longitudinally slotted magazine slot 21 of the assembly device and the short frame sides for a twisted guidance of the spacers in the pusher bed 22 of the device.

It should be mentioned that the device 20, which is not the subject of the invention to be dealt with here, is only for the purpose of illustration the effect achieved by the measures according to the invention is shown, but only those for guidance and j device parts essential for the transport of the spacers have been taken into account.

It can be seen that the front designed as a fork slide 23 includes the spacer on both sides and that the Front ends 24 of the slide act directly against the frame 13 * For this reason it is not necessary to use the Frame, with the exception of the opening at the insertion slot, now necessarily have to be formed circumferentially. Rather, it becomes the desired one Effect is also achieved when the frame is interrupted several times, or - as can be seen from FIGS. 3 and 4 only is formed from guide pins 13 "or angle pieces 13" arranged at the corners of a rectangle.

Pig. 5 finally shows a preferred embodiment of the invention, wherein several z. E, a magazine well filling forming spacer row are made coherent. Me each identically designed spacer are through relatively thin connection points (material webs 17) connected to one another. When the carriage 23 is pushed forward, these are Connections torn.

It should also be mentioned that the size of the frame rectangle is independent of the respective diameter of the spacer equal to | should be so that with a usd same jig j

Spacers of various sizes can be mounted. ι

Protection claims:

7461516117.74

Claims (1)

PATENT ADVERTISEMENT DlPL.-lNG. H. J. INGRlSCH D -56WUPPERTAL-ELBERFELD. WALL 27/29 Protection claims: 1. Plastic spacers for concrete reinforcement bars, Consists of a solid, perforated or rib-shaped disc with a central opening for receiving the reinforcing iron and a slot leading into the central opening, characterized in that that around the central opening (10) a frame (13) protruding vertically from the plane of the panes » 13 '»13"), which circumscribes a rectangle and defines the long sides with the slit center line Form 90 ° angle ^ / 2. Spacer according to claim 1, characterized in that that the frame (13) revolves and is only interrupted in the area of the guide slot (12) is. / 3. Spacer according to claims 1 and 2, characterized in that the frame (13) is immediate at its ends at the insertion slot (-12) formed integrally with clamping arms (H), which are inserted into the central opening (10) protrude and their mutually facing sides are equipped with teeth (15), knobs or the like -E. 740 * 516117.74 4. Spacer according to claim 1, characterized in that the frame (13) is interrupted several times , S 5 * spacer according to claims 1 and 4t « characterized in that the frame (13) is only formed by pins (13 ', 13' *)» which are molded onto the corners of a rectangle and which are sprayed onto both sides of the pane, / is formed. 6. Spacer according to claims 1 to 5 »dadur ch characterized in that several identically designed spacers are connected to each other in a chain-like manner by relatively thin connections (17) · /