DE1812376A1 - Guide element for a longitudinally movable table top Password: Guide element - Google Patents

Description

Gianfranco Cotti, Notary, Piazza Grande 12, 6601 Locarno (Switzerland)

Guide element for a longitudinally movable table top

The invention relates to a guide element for a table top which is longitudinally movable between two outer running rails and which are movable Rolling bodies that circulate in two closed ring paths, the rolling bodies from the end of the rolling path by means of deflection paths and a return dispute to the beginning of the rolling path and at least in the area of the rolling path through one into one . Groove of the track of the outer rails engaging guide plate are held.

Guide elements of this type are already known. In the known types of construction, steel segments with roller raceways are used, which are fastened to the table top by screwing. These steel segments protruded from the bottom of the table top. In most cases the table top has to be provided with a drive, e.g. mechanically by means of a spindle with nut or hydraulically by means of a cylinder with piston and piston rod. In the case of narrow, space-saving guides, there was often no space left for attaching the drive elements to the table top due to the segments that were positioned close to one another.

For larger loads or with a relatively long table, it is common to attach several pairs of segments one behind the other. It is often difficult to achieve an evenly distributed burden and leadership.

The aim of the invention is to create a guide element with two rolling element raceways which, on the one hand, facilitates the attachment of drive elements such as spindle nuts, cylinders or piston rods and, on the other hand, can also be adjusted apialfrai.

- 2 - 181237Γ

The invention is characterized in that the deflection tracks and the return stretch are arranged in the table top and by a flat guide rails and cover plates are covered in such a way that both the table surface and the underside of the guide rails are smooth, have screw-on surfaces that are used to fasten a table drive.

The flat guide rail is expediently in two parts and has pressure pieces or springs formed so that they can be pressed against the outer running rails.

The drawing shows an exemplary embodiment of the subject matter of the invention shown with a variant. Show it:

1 shows a table top with a guide element from the front side seen, left in view, right in "section along line I-I in Fig. 2;

FIG. 2 shows a table top with the guide element according to FIG. 1, seen from below, with the Urolenk- and cover partially removed sheet metal;

3 shows a view of a guide rail seen from the front side;

4 is a similar view of another embodiment of a Guide rail with one adjustment device?

Figure 5 is a perspective view of a cover sheet

6 is a view of a guide plate for letting out and deflecting the rolling element}

Fig. 7 is a perspective view of the WälEkSrperu.iiIauf in Leadership alamant}

Fig. "Q o a perspective view of the tabletop that is cast in Wälzkörpe'rlaufbahnen;

Fig. 9 the table of FIG. 8 with inserted? i-'lliskirpern »the

i © lS30 / ÖÜS ORSQSHAL INSPECTS ©

181237G

Guide rail according to FIG. 3 and the guide plate according to FIG. 6; and

Fig.10 the finished guide element seen from below, with instead a one-piece an adjustable two-piece guide rail according to FIG. 4 is installed.

The guide element is between a completely flat table top 1 and two outer rails 2 arranged, · between which the table top 1 is guided in a longitudinally movable manner. Between the table top 1 and the two rails 2 are balls 3 in ring-shaped Orbits arranged. The orbits are made up of one rolling path 4, two deflecting paths 5 and one return path 6. Only on the rolling path 4 do the balls take over the guidance and storage of the table top 1 in the running rails 2. In the Rolling section 4, the balls 3 run on the one hand in raceways 2a of the Running rails 2 and, on the other hand, in running tracks 7a of a flat guide rail 7 which is screwed to the table top 1. The railways the deflection sections 5 and the return sections 6 are cast into the underside of the table top 1, as can be seen in FIG is. In order to prevent the balls from falling out, a guide plate θ, which is shown in FIG. 6, is screwed to the table top 1 is. The outer edge 8a of the guide plate 8 engages with play in a Groove 9 of the rails 2. The deflection edges 8b of the guide plates 8 are subject to considerable stress and are suitably hardened.

The Umlankstrecken 5 are also covered by cover plates 10, one of which is shown in FIG.

As can be seen from FIG. 1, the underside of the rail 7 a smooth surface so that drive elements for the table without Difficulty can be attached. For example, dash-dotted lines indicate how a nut 12 of a drive spindle 13 can be attached to the rail 7.

A play-free setting of the table top 1 can, for example, by moving one of the running rails 2 against the other running '

■ i rail can be achieved by means of adjusting screws, not shown. - '

009830/0885

181237G

Another possibility of the backlash-free setting is to that instead of a one-piece guide rail 7 one two-piece Guide rail 13 is used (see. Fig. 4 and 10). The two Guide rail parts have inclined surfaces 13b on the side opposite the raceways 13a. Between these are pressure issues 14 arranged, which are presented by means of screws 15 can and dia guide rail parts 13 more or less against the Press the rails 2. Instead of pressure pieces 14, springs could also be used.

If relatively long guide rails 7 and 13 are used, it is advisable to place the tracks 7a and 13a in the middle Grind out part of the rails a little bit hollow. This can be achieved that only the balls located at the beginning and at the end of the raceways 7a and 13a are used to take the load, what is appropriate in terms of the unsavory nature of leadership.

By using deflection sections cast into the table top 5 and return lines 6, savings can be achieved in the machining of the raceways for the balls. The table top with The deflection and return sections can either be made of cast iron or be made of a suitable plastic.

009830/0885

Claims (5)

"5- 181237G 'claims" 1. Guide element for one between two outer rails Longitudinally movable table top with movable rolling elements that circulate in two closed ring tracks, with the rolling elements are guided from the end of the rolling path by means of deflection paths and a return path to the beginning of the rolling path and wherein they are held at least in the area of the rolling path by a guide plate engaging in a groove in the track of the outer running rails are, characterized in that the deflecting tracks (5) and the return path (6) are arranged in the table top (1) and ^ j by a flat guide rail (7 | 13) and cover plates (10) in this way are covered that both the table surface and the base of the guide rail smooth, for attaching a table drive J have serving screw-on surfaces, 2. Guide element according to claim 1, characterized in that the flat guide rail (13) is designed in two parts and by pressure pieces (14) or springs against the outer rails (2) can be pressed. 3. Guide element according to claim 1, characterized in that that the rolling element raceways of the guide rail (7 or 13) in the ' _m ¹ m in the middle area are ground hollow for the purpose of relocating the guide and load bearing at the beginning and the end of the raceways. 4. Guide element according to claim 1, characterized in that the one used to guide out and deflect the Wälzkirper (3) The guide plate (8) is hardened on the deflection arches (8b). 5. Guide element according to claim 1, characterized in that the table top (1) with then deflection and return tracks (5 or 6) is made of plastic. 001830/0815