FI69024C - RULLVAGN - Google Patents

Description

69024

The present invention relates to a roller comprising a base mounted on the rear wall structure of the roller, which is pivotable from at least a substantially vertical storage position to a horizontal operating position, where the base rests at its front end on supports mounted on the side walls of the roller. During storage, the roller can be opened in a V-shape and several rollers can be pushed into each other 10 when the base is turned up against the end wall of the roller.

In previous rollers, the pivoting base has been freely mounted, as a result of which the base has remained insecure in an upturned position and free bearing has been detrimental even when the rollers are put into use after storage, when the front end easily falls to the floor.

The object of the invention is to provide a new roller-20 ko which eliminates these drawbacks.

The roller according to the invention is mainly characterized in that in order to prevent falling of the front end of the base when said side wall supports are not in the receiving position, a pivot arm 25 or so is provided in the rear part of the base, the trajectory of which to a substantially horizontal position, and that a vertical retaining response is arranged in the path of movement of the arm or the like, the arm or the like of which can be bypassed in a manner known per se when the base is turned to the vertical position.

Preferred embodiments of the invention are defined in more detail in claims 2 and 3; they are also explained below with reference to the accompanying drawing.

Figure 1 shows a front view of the roller with the base in a horizontal position before attaching its front end.

2 69024

Figures 2 and 3 illustrate the structure and operation of an exemplary implementation of base locking.

The roller shown in Figure 1 of the drawing comprises two side walls 5 and 2 pivotally mounted on the end or rear wall, at one end a base 3 pivotally mounted on the rear wall structure or frame, which is fixed at its free end or front end , when the roller is in the operating position. The bearing of the base 3 is fine in front of the rear wall, with a fixed rear grille 3a in between. Upstairs there are several product support grilles 4 which, when the roller is in its position of use, rest on the supports 7 and 8 of the side walls I and 2.

The locking mechanism of the base 3 is shown in Figures 2 and 3.

15 The bearing piece 9 of each rear support roller has, for example, a shaft pin 10 fixed by welding, around which the base can turn on the bearing 12. As shown in Fig. 2, the bearing 12 is loose so that the base 3 can move in its longitudinal direction to a limited extent. Alternatively, the shaft 10 could naturally be part of the base 3 and the loose bearing 12 fixed. The body of the base 3 extends past the bearings 10, 12 on the arm 11. An arch 13 is attached to the body 9 so that when the base is in the vertical position according to Fig. 2 the arm 11 extends down past the lower end of the arch 13 and the base 3 cannot accidentally fall forward. To turn the base down, it is first raised so that the arm 11 rises above the retaining arc 13, after which the arm II can slide along the arc 13, as shown in Figure 3, until it hits the abutment plate 14 positioned so that the base stops substantially horizontal, remaining there under its own weight.

The arc 13 is, of course, substitutable for almost any other form of control response, as long as it raises the base 3 to the position shown in Fig. 3 relative to the pin 35 10 before reaching the vertical position and allows the base to lower as shown in Fig. 2.

li 3 69024 The term "vertical position" is otherwise quite broad in this context, it also includes at least slightly inclined positions, e.g. the one shown in Fig. 3, if the arc 13 were to end correspondingly earlier.

5 Instead of the abutment plate 14, e.g.

an adjacent beam over which the line of reference numeral 14 passes, if this is at a suitable height or if the arm 11 is suitably bent and the bearing point is at the rear so that the arm 11 extends to its destination; the fixed rear rear grid 3a included in the known rollers and also shown in the drawing is unnecessary when the base 3 is locked according to the invention.

The invention also includes rollers which have no side or end walls but only 15 side support beams for supporting the boxes and a pivoting central support between them, similar to the base 3 shown in the drawing.

Claims (3)

69024 A roller comprising a base (3) mounted on a rear wall structure of the roller, pivotable from at least a substantially vertical storage position to a horizontal operating position, wherein the base rests at its front end on supports (5, 6) mounted on the side walls (1, 2) of the roller, , that in order to prevent the base end of the base (3) from falling into the base when said side wall supports 10 (5, 6) are not in the receiving position, an arm (11) pivoting with the base is arranged in the rear part of the base, a trajectory mounted on the rear wall structure (14) for stopping the pivoting movement of the base to at least a substantially horizontal position, and 15 that a vertical retaining stop (13) is arranged in the path of movement of the arm (11) or the like. Roller according to claim 1, characterized in that the arm (11) is parallel to the base plane extending backwards from the base bearing point, that the stop stop (14) is formed as a plate body arranged in connection with the roller rear wheel carrier (9), and that the vertical retaining stop (13) 25 is likewise mounted on the rear wheel carrier. Roller according to claim 2, characterized in that said arrangement of arm (11), stop stop (14) and stop stop is mounted in connection with each of the rear wheels. Il