DE2546831A1 - SLOTTED SCREW NUT - Google Patents

Description

Dipl.-Ing.

Rolf Charrier 3

Patent attorney

Augsburg 31 P.O. Box 242

Rehlingenstrasse 8
Phone: 0821 / 3601.5

Postbcheckkomo: Munich No. 1547 89-801

6974/18 / Ch / Fr Augsburg, September 30, 1975

company

Manfred Wampfler

7858 Well am Rhein-Märkt

Rheinstrasse 27

Slotted screw nut

The invention relates to a slotted screw nut with an outer cone on the front side.

There are slotted nuts known that one have front-side outer cone in which two or more radially extending slots are arranged. The slotted cone of the screw nut turns into a cone-shaped one when it is screwed onto a screw Bore of the part into which the screw is screwed. The slotted cone sectors of the nut will be here pressed onto the screw thread, whereby results in a screw lock.

This nut has some disadvantages. If the nut is relatively long, it is cumbersome to remove the screw nut

709816/0209

6974/18 / Ch / Fr - t - September 30, 1975

to screw on the screw! until the cone meets the cone bore achieved. This applies in particular to such applications in which the screw-in length is different, but the screw length was selected according to the shortest screw-in length. In addition, the production is Such screws are relatively expensive because the slots have to be milled into the cone. The task is therefore to design a screw nut in such a way that it can be quickly screwed onto the Screw is possible.

According to the invention, this is achieved in a nut of the type mentioned in that the nut is continuously slotted and both nut halves are connected to each other on the head side via two elastic webs η si nd.

In this way it is possible to put the two unfolded nut halves onto the screw and then to collapse it in the area of the conical bore, whereupon the nut only extends so far on the Screw on until the cone is in the cone bore sit.

To get a Ensure fixation of the two nut halves! has at least one nut half on the inside on a pin, while the other nut half instead this pin has a hole so that when folded both nut halves the pin is pressed into the hole and in this way both nut halves holds together.

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6974/18 / Ch / Fr - t - September 30, 1975

The invention is explained in more detail below with reference to the drawing. Show in it:

1 shows an application example for the use of the nuts;

Fig. 2 is a first side view and

Fig. 3 is a second side view of the nut;

Fig. 4 · a section through the nut head and

Fig. 5 is an embodiment of a bore in the nut head.

In Fig. 1, a cable trolley is shown in front and side view. Two screws 4 - which carry a cable support 2 are attached to the upper part 1 of the cable trolley. The fastening between the cable support 2 and the screws * f is carried out by means of nuts 5. The through holes in the cable support 2 each have a conical hole in the direction of the nuts 5. If the cable trolley carries only a few cables of small cross-section, then the cable support 2 is located relatively close to the cable trolley top I _1, that is, the nuts 5 would have to be screwed onto the screws 4 over a considerable length. This is avoided with the screw nuts according to the invention.

The nuts 5 are through a longitudinal Slot 3 divided into two halves 6, 7. Both nut halves 6, 7 are on the head side via two thin elastic ones

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6974/18 / Ch / Fr - f - September 30, 1975

Plastic webs 8, 9 connected to one another. The production the nuts 5 made of plastic takes place in the unfolded state, d. H. the two nut halves 6, 7 lie next to one another and are connected to one another via the webs 8, 9.

Both nut halves have an outer cone 10 on the front side. A corresponding conical hole is provided on the part having the through hole for the screws k.

The thread 11 does not extend over the entire length of the inner bore of the screw 5, rather it is in the area of the screw head 12 a recess 13 is provided, the diameter of which is larger than the thread diameter. This makes it easier to fold the two nut halves 6, 7 together on the screw.

In order to avoid unintentional opening of the two nut halves 6, 7, which can be the case if the cone 10 does not yet protrude into the corresponding conical bore, each nut half 6, 7 has a pin 14 or 15 and a hole 16 or 17 on the head side on. The pins Ik, 15 pass through the slot 3 and can be pressed fully into the respective bore 16 and 17, respectively. In order to ensure a firm fit, the bores 16, 17 can have a projection 18 on the front side. In a corresponding manner, the pins 14, 15 can be thickened at the front, the thickening having a larger diameter than the diameter of the projection 18.

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6974/18 / Ch / Fr - 9 - 30 September 1975

In order to facilitate the production of the screw 5, the head 12 of each nut half 6, 7 has three screw head sides 19, 20, 21 of the hexagonal head.

- 6 claims

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Claims (12)

6974/18 / Ch / Fr - • - September 30, 1975 A nsprüche U,! Slotted nut with a front Outer cone, characterized in that the screw nut is continuously slotted and both nut halves are connected to one another on the head side via two elastic webs. 2. Nut according to claim 1, characterized in that the nut halves are integral with the webs. 3. nut according to claim 1, characterized in t that the webs are longer than the width of the gap between the nut halves. 4. Nut according to claim 1, characterized in that the one nut half has a pin on the inside and the other half of the nut has a hole instead of this pin, wherein the diameter of the pin and hole are the same. 5. Screw nut according to claim 4, characterized in that that each half of the nut alternately has a pin and a hole . 709816/0209 6974/18 / Ch / Fr - 1 - September 30, 1975 6. Nut according to claim 4 or 5, characterized in that the pin and nut pins are in one piece. 7. Nut according to claim I, characterized in that the head is a hexagonal head is formed and each nut half three Having screw head sides. 8. Nut according to claim 4 and 7, characterized in that the pin and the bore are in the area of the head. 9. Screw nut according to at least one of claims I. to 8, characterized in that all parts of the nut are made of plastic and are integral with one another 10. Screw nut according to claim k or 5, characterized ge characterizing et that the bore on the input side has a projection. 11. screw nut according to claim XO, characterized g e - do not indicate that the pin is thickened on the front side and the thickening has a larger diameter than the diameter of the protrusion. 12. Nut according to claim 1, characterized in that it is in the region of the Head has a recess whose diameter is larger than the thread diameter. 70981 β / 0209