Flexible coupling

Description

[0001] Flexible coupling. In flexible couplings, it is known to use angular springs whose two ends are attached to different The radii are fixed, meaning they are inclined to the tangential direction. For this purpose, two rigidly attached components were used, attached to the coupling halves. Leaf springs were used, but the risk of breakage was high; on the other hand, wire springs fixed with bent eyelets were used, but here too the Risk of breakage at the Clamping points not completely eliminated, force absorption capacity severely limited, and assembly excessively complicated due to the large number of springs. involved.

[0002] The essence of the invention lies in the fact that inclined leaf springs are bent at their ends into eyelets which are attached to flaps of the two The coupling halves can simply be pushed onto the inserted bolts. This ensures that, on the one hand, the spring ends are against the bolts. The spring ends are arranged in a freely rotatable, articulated manner, and are therefore subject to the same stress as the other spring parts, i.e., not increased. are subject to risk of breakage, and on the other hand, a noticeable tangential displacement of the two flexibly coupled parts relative to each other. This corresponds to a smaller change in the length of the spring, meaning that fewer relatively stiff springs are sufficient, i.e., the clutch can be particularly small and therefore light. It is compact and inexpensive to manufacture. The inclined position of the springs is utilized in such a way that those located at different radii The retaining parts for the springs consist of flaps or eyes that become completely free of each other when the coupling halves rotate relative to each other. and accordingly, after removing the springs, without requiring any other disassembly, the coupling parts can rotate freely. against each other, i.e., allowing the two shafts to be uncoupled. This facilitates the easy release of the coupling and also the replacement of defective springs. If the bolts are inserted from the accessible side of the housing by means of an easily detachable connection using cotter pins or screw threads, then that a quick uncoupling of the shafts, which is sometimes desirable in operation, for example when used as a transmission coupling in factories and can be done safely by pulling out the bolts and removing the springs.

[0003] The drawing illustrates the new coupling in an exemplary embodiment, namely Fig. i is half longitudinal section and half Exterior view, Fig. 2 a middle section.

[0004] The coupling bodies i, 2 are mounted on the two shafts, the latter of which is formed into an enclosing housing 3. The inner coupling body i carries bolt eyes q, and the outer coupling body carries corresponding bolt eyes 5; both rows of eyes q., 5 are located at such different radii that they do not prevent the free rotation of one coupling body against the other. Between these eyes are (by inserted bolts 6, 7, which are fixed with screw threads 8, 9 in the outermost eyes q., 5, Bow-shaped leaf springs 10 are stretched. The lengths of these springs 10 are dimensioned such that an inner spring is formed by each of their enclosing loops 11, 12. Bolt 6 and an outer bolt 7 are held in such a position that the line connecting both bolts has an inclination of approximately 4.5 to 60°. compared to the radii under consideration.

[0005] A tangential displacement of an inner bolt 6 corresponds to a noticeably smaller compression or expansion of the spring. io, so that their illustrated short version is sufficient for adequate compliance.

[0006] The springs can be subjected to tension or compression and accordingly for both directions of rotation of the driving shaft the to transmit power. If desired, the springs can also have half the width shown in Fig. i and be in in a zigzag arrangement between bolts 6, 7, arranged side by side such that one group of springs is under tension and the The other is subjected to pressure. This ensures that the springs have a completely uniform effect in both possible directions of force transmission.

[0007] As can be seen, the bolts 6, 7 and the spring 10 can be inserted and removed without difficulty from the accessible side. can be removed so that the shafts can be easily coupled and uncoupled at any time without dismantling the main coupling parts i and 3. is possible.

Claims

[0008] PATENT APPLICATION: Flexible coupling with leaf springs arranged at an angle to the tangential direction, thereby characterized in that inclined leaf springs are bent at their ends into loops through which bolts pass, which in turn are thus The lobes or eyes of the inner and outer coupling rings are held so that the lobes of both rings can rotate freely past each other. can and space is available to make the springs accessible and to remove them easily, for example under easily removable screws- or cotter pin fixing of the bolts.