EP2786032A1

EP2786032A1 - Elastic force transmission element and coupling device

Info

Publication number: EP2786032A1
Application number: EP12794334.8A
Authority: EP
Inventors: Klaus Kleindorfer; Marc Brandl; Johann Loew; Josef Stubenrauch; Armin Drechsler
Original assignee: SGF Sueddeutsche Gelenkscheibenfabrik GmbH and Co KG
Current assignee: SGF Sueddeutsche Gelenkscheibenfabrik GmbH and Co KG
Priority date: 2011-12-01
Filing date: 2012-11-30
Publication date: 2014-10-08
Also published as: WO2013079640A1; CN104081075B; CN104081075A; US20140378234A1; US9611896B2; BR112014013196A2; DE102011119936A1

Abstract

The present invention relates to an elastic force transmission device 10, in particular for transmitting torques, wherein the force transmission element 10 is provided with at least two receiving openings 14, 16 for connection to force transmission components, an elastomer body 12 and at least one loop assembly 26 embedded in the elastomer body 12, wherein the loop assembly has at least two opposite strands 42, 44 and the force transmission element 10 has at least one pressure absorption device 28, 30, 36, 38. According to the invention, it is provided that the at least one pressure absorption device 28, 30, 36, 38 is arranged in a region between the opposite strands 42, 44 of the loop assembly 26, in which region the opposite strands 42, 44 of the loop assembly 26 are at the maximum distance A from each other, wherein the at least one pressure absorption device 28, 30, 36, 38 is designed in such a manner that the rigidity of the force transmission element 10 progressively increases in the event of a tensile loading.

Description

Elastic force transmission member and coupling device

The present invention relates to an elastic force transmission member, in particular for the transmission of torques.

Such power transmission members are known in the art and disclosed, for example, in document AT 101387.

This document discloses a coupling member with a pressure body. The pressure body has an elliptical shape and semicircular recesses are inserted into the coil-like sleeves. The pressure hull and the sleeves are looped by several turns of a tension member. Subsequently, the described arrangement is coated with a rubber solution and vulcanized.

The relatively high, independent of the load of the coupling member stiffness of the known from the prior art coupling members has proved to be detrimental to the power transmission and also for the vibration damping behavior.

It is accordingly an object of the present invention to provide an elastic force transmission member of the type described, which allows the setting ^¬ ment of a desired stiffness as a function of the load while maintaining a high life.

This object is achieved by elastic force transmission member having the features of claim 1 and an elastic power transmission device having the features of claim 17.

Preferred embodiments of the force transmission member according to the invention will become apparent from the dependent claims.

The elastic force transmission member according to the invention comprises at least two sockets for connection to at least two power transmission components and at least one Schiingenpaket embedded in an elastomer composition which has at least two opposite, elastically deformable strands in the region between the at least two bushes. The at least two opposing strands of the at least one loop package are each provided with at least one predetermined deformation in the region between the at least two bushes. forms. In a tensile load, the at least one predetermined deformation of the at least two opposing strands is elastically deformable such that the rigidity of the power transmission device increases progressively under a tensile load.

In a tensile load of the force transmission member according to the invention, the sockets are moved away from each other, whereby the at least one Schiingenpaket or the strands of the at least one Schiingenpakets are stretched and the predetermined deformation is elastically deformed. The glass-related stretching of the strands produces a pressure force acting transversely to the longitudinal axis of the force transmission member. The strands of the loop package can absorb this compressive force via an elastic deformation of the predetermined deformation, whereby the rigidity of the force transmission member increases progressively under a tensile load.

By the term " elastically deformable " used with respect to the opposing strands of the at least one loop package, it is to be understood that the opposing strands embedded in rubber compound elastically deform until the opposing strands, due to the lateral forces acting on them, undergo an imbalance Essentially stretched state. The lateral forces in the stretched state of the strands of the at least one Schiingenpakets close to zero, whereby a stiffness characteristic is achieved for the power transmission member with a soft zero crossing, i. the rigidity of the power transmission device increases progressively.

In other words, the closer the strands of the at least one loop package come to their stretched condition, i.e., the stiffness of the transmission member progressively increases. the smaller the predetermined deformation of the strands of the loop package becomes. In the stretched state of the strands of the at least one Schiingenpakets the stiffness of the power transmission member is greatest.

According to one embodiment of the present invention, the at least two opposing strands of at least one loop package each have such a predetermined deformation, that in each case starting from one of the bushes, the distance between the opposing strands of Schlingenpa- kets changed until in a range a predetermined distance between the strands of the Schiingen package sets. In this embodiment, the stiffness increases until the opposite strands of the at least one ski genpakets in their stretched state have a substantially constant distance from each other, ie, are parallel to each other. In other words, the transverse forces occurring in the case of essentially parallel strands of the loop package go to zero.

According to the invention, the greatest distance between the opposite strands of the loop package is present in the region of the predetermined distance.

Alternatively it can be provided that the smallest distance between the opposite strands of the Schiingenpakets exists in the region of the predetermined distance.

According to one embodiment of the invention, in a region of the predetermined deformation, in which the opposite strands of the Schiingenpakets have the greatest distance from each other, arranged at least one pressure receiving device, wherein the at least one pressure receiving device is designed such that the stiffness of the force transmission member in a tensile load progressively elevated.

In this embodiment, a pressure receiving device is provided to receive, in addition to the strands themselves, the transverse or compressive forces acting on the strands of the sling package, i. the strands transfer the pressure or transverse forces acting on them at least partially to the pressure receiving device.

In the case of a tensile loading of the power transmission member, the pressure receiving means receives a pressure force exerted by the strands of the at least one loop package such that the rigidity of the power transmission member or the rigidity of the at least one loop package further increases progressively. By arranging the pressure receiving device between strands of the at least one Schiingenpakets the pressure receiving device can absorb the resulting shear forces or compressive forces and thus further increase the rigidity of the power transmission member. The stiffness of the power transmission member is initially determined in the load case only by the at least one Schiingenpaket and this surrounding elastomer body. With increasing tensile load, the pressure force generated is absorbed by the pressure receiving device, resulting in the progressively increasing stiffness. In other words, the power transmission first low stiffness, wherein the stiffness increases progressively with increasing load. Especially with an abruptly applied to the power transmission member torque increase, such as when starting a machine, the Schiingenpakete be greatly stretched. This suddenly occurring stretching or loading of the Schiingenpakete can be counteracted by means of the pressure receiving device, since the pressure receiving device absorbs the occurring by the stretching of the Schiingenpakete transverse or compressive force.

According to a preferred embodiment of the invention it is provided that the at least one pressure receiving device has at least one pressure element which extends at least in sections transversely to the longitudinal axis of the force transmission member in at least one recess. The pressure element absorbs the compressive force generated by the strands after a predetermined approximation of the strands to each other. As a result, the rigidity of the force transmission member according to the invention continues to increase after said predetermined approach.

The at least one pressure-receiving device preferably comprises at least one opening in the elastomeric body, which is arranged between the at least one pressure element and at least one of the strands of the Schiingenpakets. Through the opening of the pressure-receiving device, the elastomeric body of the force transmission member can be deformed in the region of these openings for the progressive increase of the rigidity, before the at least one pressure element is loaded. In the openings of the pressure receiving device sockets can be provided. Preferably, these sockets are made of plastic.

To adjust a progressively increasing stiffness also contributes to the shape of the Schiingenpakets. According to the invention, it is provided that the two opposing strands in the area between the two bushings have a spacing from one another at at least one location which is greater than the diameter of the bushings. In other words, this means that the at least one Schiingenpaket surrounds the two sockets of the power transmission member and increases the distance between the two strands of at least Schiingenpakets starting from a socket to the point with the greatest distance. Starting from the point of greatest distance between the two opposite strands of the Schiingenpakets the distance between the strands decreases in the direction of the other socket. According to a preferred embodiment of the invention, the pressure-receiving device has at least two pressure elements which move towards each other under tensile stress due to the pressure exerted by the at least one Schiingenpaket pressure and finally create each other. In this embodiment of the invention, the rigidity increases in discrete stages, since in a tensile load, the stiffness of the power transmission member is initially determined only by the rigidity of the at least one Schiingenpakets and this surrounding elastomer body until the two pressure elements come into contact and the Schiingenpaket or its strands absorb compressive force generated, whereby the rigidity is increased progressively in discrete stages.

To be able to produce the force transmission member according to the invention relatively easily and inexpensively, the at least one damping element is preferably formed integrally with the elastomer body of the power transmission member.

According to one embodiment of the present invention, the elastic force transmission member may comprise at least two Schiingenpakete, wherein the at least two Schiingenpakete are arranged and with a predetermined deformation, that the largest distance between the strands of the one Schiingenpaketes and the strands of the other Schiingenpakets in the axial direction of the Bushes.

Preferably, the strands of the at least two Schiingenpakete can each be provided with a predetermined deformation in the axial direction of the sockets, wherein the opposite strands of one Schiingenpakets are deformed in the opposite direction predetermined as the opposite strands of the other Schiingenpakets.

According to one embodiment of the invention, the at least two opposite strands of the at least one Schiingenpakets in the region between the bushings each have two sub-strands, wherein the sub-strands are deformed in the axial direction of the bushes opposite to each other predetermined. In other words, the strands of the Schiingenpakets are divided in the area between the sockets. Due to this division, the sub-strands of the Schiingenpaketes can be individually provided with a predetermined deformation. The partial strands are deformed in such a way that sets a predetermined distance between the sub-strands of a strand of the Schiingenpakets. According to one embodiment of the invention, the predetermined deformation is at least one kink with a predetermined kink angle. The bending angle is for example in the range of 10 ° -20 °.

Alternatively, the predetermined deformation may be a curvature or bulge.

In order to hold the at least one Schiingenpaket on one of the sockets in a predetermined position, at least two flange bushings are provided on a socket.

Preferably, a pre-made Schiingenpaket is used, which is then combined with the sockets and flanged bushes to form a unit. The elastic force transmission member can therefore be modularly assembled.

In addition to the embedded in the rubber mass Schiingenpaket also the flange bushings can be at least partially covered with the rubber compound.

The present invention also relates to a power transmission device having at least two of the above-described power transmission members.

The present invention further relates to a coupling device for transmitting torques between two shaft sections having a first flange and a second flange, the first and second flanges each having a plurality of fasteners and a fastener of the first flange and a fastener of the second flange above, respectively a power transmission member of the type described above are interconnected.

With such a coupling, two shaft sections can be interconnected and at the same time provide cardanic loads, i. Angular offsets between the shaft sections to be joined, are compensated. Such couplings are suitable, for example, for use in motor vehicles, but also for industrial use.

According to a preferred embodiment of the invention, the first and / or the second flange have recesses into which the fastening elements of the respective other flange protrude. The invention is explained below by way of example with reference to the accompanying figures. They show:

Figure 1 is a perspective view of a first embodiment of the present invention;

Figures 2a and 2b is a plan view and a perspective view of the sockets and the bushes looping around Schiingenpakets the force transmission member according to the invention;

Figure 3 is a sectional view of the power transmission member according to the first embodiment of the invention;

4 shows a perspective view of a second embodiment of the vorlie ^¬ constricting invention;

Figure 5 is a sectional view of the power transmission member according to a second

Embodiment of the invention;

Figure 6 is a perspective view of a power transmission member according to a third embodiment of the invention;

Figure 7 is a sectional view of the power transmission member according to the third

Embodiment of the invention;

Figures 8a and 8b is a plan view and a perspective view of the sockets and the bushing wrap around the bushing of the power transmission member according to the third embodiment of the invention;

Figure 9 is a perspective view of a power transmission member according to a fourth embodiment of the invention;

Figure 10 is a sectional view of the power transmission member according to the fourth

Embodiment of the invention; Figure 11 is a perspective view of a power transmission member according to a fifth embodiment of the invention;

Figures 12a and 12b is a plan view and a perspective view of

Bushings and of the bushes looping Schiingenpakets the power transmission member according to the fifth embodiment of the invention;

Figure 13 is a sectional view of the power transmission member according to the fifth

Embodiment of the invention; and

Figure 14 is a perspective view of a power transmission member according to a sixth embodiment of the invention;

Figures 15a to 15c are views of the sockets and the bushing wrap around the Schiingenpakets of the power transmission member according to the sixth embodiment of the invention;

Figures 16a to 16c are views of the power transmission member according to the sixth embodiment of the invention;

Figure 17 is a perspective view of a power transmission device according to a seventh embodiment of the invention;

Figures 18a to 18c are views of the sockets and the sockets wrap around the sockets of the power transmission device according to the seventh embodiment of the invention;

Figures 19a to 19c are views of the power transmission device according to the seventh

Embodiment of the invention; a perspective view of a power transmission member according to an eighth embodiment of the invention;

Figures 21a to 21c are views of the sockets and the bushes looping around

Schiingenpakets of the power transmission member according to the eighth embodiment of the invention; Figures 22a and 22b are views of the power transmission member according to the eighth

Embodiment of the invention; and

Figures 23a to 23c are views of a power transmission member according to a ninth

Embodiment of the invention;

Figures 24a and 24b are views of the sockets and the bushing wrap around the bushing of the power transmission member according to the ninth embodiment of the invention; and

Figure 25 is a perspective view of a coupling device according to the

Invention,

Figure 1 shows a perspective view of the power transmission member according to a first embodiment of the invention, wherein the power transmission member is generally designated 10.

The force transmission member 10 has an elastomeric body 12, in the receiving ^¬ meöffnungen 14 and 16 are formed. In the receiving openings 14 and 16 are bushings 18, 20 are provided, via which the power transmission member 10 with power transmission components (see FIG. 6) can be coupled, between which by means of the force transmission member 10 is to transmit forces.

As can be seen in Figure 1 flanged bushes 22, 24, which are provided at the axial ends of the bushes 18, 20 and for supporting a Schlingenpa- kets 26 (Figure 2) in the axial direction of the bushes 18, 20 are used. The sockets 18, 20 are looped around by a not shown in Figure 1 Schiingenpaket 26 (Figure 2). The bushes 18, 20, the collar bushings 22, 24 and the Schiingenpaket 26 (Figure 2) are embedded in the elastomer body 12.

In the area between the receiving openings 14, 16, one recognizes mutually spaced pressure elements 28, 30, each having a contact surface 32, 34, and openings 36, 38 in the elastomer body 12. The pressure elements 28, 30 and the openings 36, 38 form a pressure receiving device, by means of which the rigidity of the force transmission member 10 can be progressively increased at a tensile load. The pressure elements 28, 30 are opposite each other and approach at a tensile load of the power transmission member 10 due to the stretching of the Schiingenpakets 26 (Figure 2) to each other until the contact surfaces 32, 34 engage each other. The openings 36, 38 extend through the elastomeric body 12 and are formed adjacent to the pressure elements 28, 30. The pressure elements 28, 30 protrude into a recess 40 in the elastomer body 12, wherein the recess 40 is located centrally in the elastomer body 12 between the receiving openings 14 and 16.

FIG. 2a shows a top view and FIG. 2b shows a perspective view in which only the bushes 18, 20, the collar bushings 22, 24 arranged thereon and the ski belt package 26 wrapping around the bushings 18, 20 in the looping area U are shown.

In the wrap area U of the bushings 18, 20, the looping package 26 is supported by the flanged bushes 22, 24 at the respective axial end of the bushings 18, 20 in the axial direction of the bushings 18, 20, to an axial "wandering" of the Schiingenpakets 26 on the jacks 18, 20 in the load case of the power transmission member 10 to be able to stop.

In the area between the bushings 18, 20, the loop package 26 has opposite strands 42, 44. The strands 42, 44 of the sling package 26 are spaced apart in a direction transverse to the longitudinal axis L of the force transmitting member 10 by a distance. The strands 42, 44 of the loop package 26 have a predetermined deformation in the form of a kink 46, 48. Starting from the bushes 18, 20, the distance between the strands 42, 44 increases up to the kink 46, 48 of the strands 42, 44. Starting from the kink 46, 48 of the associated strand 42, 44 reduces the distance between the strands 42, 44 in the direction of the respective other socket 18, 20 again. In other words, the distance A between the strands 42, 44 at the kinks 46 and 48 and thus in the region of the predetermined deformation is greatest. The kinks 46, 48 of the strands 42, 44 is performed with a predetermined bending angle α of about 18 °.

The second embodiment of the invention represents, as it were, the "basic framework" for a large part of the other embodiments of the force transmission member according to the invention described here. FIG. 3 is a sectional view of the power transmission member 10 according to the first embodiment of the invention.

In Figure 3 can be seen again the receiving openings 14, 16 with the bushes 18, 20 arranged therein and arranged at the axial ends of the bushes 18, 20 flanged bushes 22, 24. The bushings 18, 20 are from that in Figure 3 by the dashed line shown Schiingenpaket 26 entwined. The recess 40 and the pressure elements 28, 30 formed therein are provided in a region of the elastomer body 12, which lies both between the receiving openings 14, 16 and between the strands 42, 44 of the Schiingenpakets 26. The extending through the elastomer body 12 openings 36, 38 are provided between the kink 46, 48 of the respective strand 42, 44 and one of the pressure elements 28, 30. In the region of the greatest distance A between the strands 42, 44 are the pressure elements 28, 30, the openings 36, 38 and the kinks 44, 46 on a transversely to the longitudinal axis L of the force transmission member 10 extending imaginary line.

In a tensile load of the power transmission member 10, the Schiingenpaket 26 is stretched and the distance A between the strands 42, 44 of the Schiingenpakets 26 decreases. As a result, the pressure elements 28, 30 approach each other until they reach each other with their contact surfaces 32, 34 in abutment. If the abutment surfaces 32, 34 of the pressure elements 28, 30 abut each other, there is a sudden increase in rigidity and the elastomer body 12 can only continue to deform in the region of the openings 36, 38 by the strands approximating each other due to tension 42, 44 pressure force generated by the pressure elements 28, 30 is received under deformation. The rigidity of the power transmission member 10 thus increases progressively. In other words, the power transmission member 10 is relatively "soft" at low tensile loading, i. it has a low rigidity, until it comes to the mutual contact of the two pressure elements 28, 30. As a result, the rigidity increases greatly and a further tensile load causes a deformation of the elastomer in the region of the openings 36, 38 and the pressure elements 28, 30. The rigidity of the force transmission member 10 increases under tensile load until the strands 42, 44 of the Schiingenpakets 26 run due to the tensile load quasi parallel and generated by them

Compressive force in the transverse direction goes to zero. Figure 4 shows a perspective view of a power transmission member 110 according to a second embodiment of the invention.

Compared with the embodiment described with reference to FIGS. 1 and 3, the embodiment according to FIG. 4 has only one pressure element 128, which can be interrupted without interruption, i.e. without pressure. extends continuously in the region between the strands 142, 144 of the Schiingenpakets 126. The pressure element 128 extends transversely to the direction of the longitudinal axis L through the recess 140.

Figure 5 shows a sectional view of a power transmission member 110 according to the second embodiment of the invention.

As with the embodiments described above, the pressure element 128 is located in the region of greatest distance A between the strands 142, 144 of the loop package 226, i. in the region of the kinks 146, 148 of the strands 142, 144.

When the elastic force transmission member 110 is loaded with a tensile force, the strands 142, 144 approach each other and deform the elastomeric body 112 in the region of the openings 136, 138 with the transverse force generated by the approach until the pressure force is absorbed by the pressure member 128. Since the pressing member 128 can absorb the pressing force generated by the strands 142, 144 under deformation in accordance with its pressure load, the rigidity of the power transmission member 100 increases progressively. The stiffness of the force transmission member 100 in turn increases until the strands 142, 144 of the Schiingenpakets 126 run due to the tensile load quasi-parallel and the pressure force generated by them goes to zero.

Figures 6 to 8b show views of a power transmission member 210 according to a third embodiment of the invention.

The structure and operation of the power transmission member 210 largely correspond to the structure of the first embodiment described with reference to FIGS. 1 and 3.

The third embodiment differs from the first embodiment by the bushings 250 and 252 disposed in the openings 236, 238. The construction of the sockets 250 and 252 can be seen in FIGS. 8a and 8b. Bushings 250 and 252 have a tubular portion 250a and two plate-shaped portions 250b, 252b, respectively. With their portions 250a and 250b, 252b, the bushes 250 and 252 partially surround the strands 242 and 244 of the sling package 226. The tubular portion 250a of the bushes 250 and 252 is disposed between the strands 242 and 244. The plate-shaped portions 250b, 252b abut on the loop package 226.

FIG. 9 shows a perspective view of a power transmission element 310 according to a fourth embodiment.

It can already be seen from FIG. 9 that in the fourth embodiment no pressure elements are provided, but only two arms of the elastomer body 312 extend between the bushes 318 and 310. The recess 340 is accordingly formed enlarged compared to the embodiments described above.

FIG. 10 is a sectional view of the power transmission member 310 according to the fourth embodiment.

Compared with the embodiments described above, it can be seen from FIG. 10 that the opposing strands 342, 344 of the loop package 326 define the recess 340 between them, in the area between the bushings 318, 320, i.e. between the bushes 318, 320. In the embodiment according to FIG. 2, no further components are provided between the strands 342, 344. Accordingly, the rigidity of the elastic force transmitting member 310 will only be determined by the looping package 326 embedded in the elastomeric rubber material and its shape with the predetermined deformation, i. with the kinks 346, 348 of the strands 342, 344 determined.

In the case of a tensile load, only the strands 342, 344 of the loop package 326 deform elastically with the surrounding rubber mass until they are substantially parallel, ie have a constant spacing from one another. In other words, in a tensile load of the power transmission member 100 by the provided with a kink 346, 348 strands 342, 344, a transverse force and the distance between the strands 342, 344 decreases until they are almost parallel and the transverse force goes to zero. The smaller the distance A between the strands 342, 344 at the kinks 346 and 48, the smaller is the resulting transverse force. Accordingly, the rigidity of the power transmission member 310 according to the second embodiment of the invention progressively increases with the decreasing distance A. In other words, the power transmission member 310 achieves a soft-zero-stiffness stiffness characteristic curve with a high progression.

FIGS. 11 to 13 show various views of a power transmission member 410 according to a fifth embodiment.

The only difference from the fourth embodiment is the predetermined deformation of the strands 442, 444. The distance between the strands 442 and 444 decreases due to the predetermined deformation from the bushings 418 and 420 to a region with the smallest pitch A, the kinks 446 and 448 are formed, ie the smallest distance A exists between the kinks 446 and 448.

In a tensile load, the strands 442, 444 of the Schiingenpakets 426 deform elastically until they are at a constant distance from each other. In other words, the strands 442, 444 are displaced outwardly away from the longitudinal axis L until they are parallel to each other.

The operation of the power transmission member 410 is otherwise similar to the operation of the fourth embodiment.

FIG. 14 shows a perspective view of a power transmission member 510 according to a sixth embodiment of the invention.

In the receiving openings 514 and 516 sockets 518 and 520 are arranged. In the elastomeric body 512, a recess 540 is formed, which extends centrally in the elastomeric body 512 between the receiving openings 514 and 516.

Suggestion is already in Fig. 14, a predetermined deformation of the

Elastomer body 512 in the form of a bulge 554 can be seen Figures 15a to 15c show various views of the sockets 518 and 520 and of the bushes 518, 520 looping around Schiingenpakets 526 according to the sixth embodiment.

The opposite strands 542 and 544 of the Schiingenpakets 526 are provided in the region between the bushes 518 and 520 each with a predetermined deformation in the form of the bulge 554 and 556. The deformation 554 and 556 extend in the axial direction of the sockets 518 and 520.

Figures 16a and 16b show a top view and a side view of the power transmission member 510.

In particular, in FIG. 16b, the bulge 554 of the loop package shown in FIG. 15b, which is shown in FIGS. 16a and 16b in the state embedded in the elastomeric body 512, can be seen.

In the region of the deformations 554, 556 of the strands 542, 544 Druckelemen te ^¬ 528, 530 are shown, which extends transversely to the longitudinal axis of the power transmission device 510. In the case of a tensile load, the force transmission member 510 may be supported by the pressure elements 528, 530 for receiving the pressure or transverse force to other components.

16c shows a sectional view of the power transmission member 510. In the sectional view of FIG. 16c can be seen the bushings 518 and 520, which have at their axial ends in each case flange bushings 522 and 524. The flanged bushings 522, 524 support the looping package 526 in the axial direction of the bushes 518, 512. In the area between the bushes 518 and 520, the deformation 554 and the pressure element 528 can be seen, which is located in the inwardly curved region 558 of the bulge 554.

Upon a tensile loading of the power transmission member 510, the looping package 526 is stretched, thereby reducing the bulges 554 and 556 of the strands 542 and 544 of the loop package 526. In other words, in a tensile load, only the strands 542, 544 of the sling package 526 are elastically deformed together with the surrounding rubber mass until the strands 542 and 544 transition into a substantially stretched condition. The more the strands 542, 544 approach their stretched condition, the smaller will be the resulting one Lateral force. When strands 542 and 544 reach their nearly fully stretched condition, the shear forces approach zero. The stiffness of the force transmitting member 510 thus progressively increases with the decreasing bulges 554 and 556 until finally reaching a stretched condition of the strands 542, 544 in which stiffness is greatest.

17 shows a perspective view of a power transmission device 610 according to a sixth embodiment of the invention.

The power transmission device 610 has two power transmission members 510a and 510b according to the embodiment of the invention described with reference to FIGS. 14 to 16c.

The power transmission device 610 accordingly comprises two power transmission members 510a and 510b arranged so that their respective bumps 554a, 556a and 554b rise in the axial direction of the bushes 518a, 520a and 518b, 520b in the opposite direction. The structure of the power transmission members 510a and 510b corresponds to the structure of the power transmission members 510 described with reference to FIGS. 14 to 16c.

The two power transmission members 510a and 510b are respectively arranged with their bulges 554a, 556a and 554b such that the corresponding pressure elements 530a, 528a, 528b, 530b are in the region of greatest distance A between the Schiingenpaketen 526a, 526b of the force transmission members 510a and 510b opposite each other. This is achieved in that the bulges 554a, 556a, 554b and 556b are curved in opposite directions in the axial directions. In this case, the pressure elements 528a, 530a, 528, 530b are arranged on the inwardly curved section of the elastomer body 512a, 512b, or the loop packages 526a and 526b.

At a tensile load of the power transmission device 610, the loop packs 526a and 526b are stretched and the distance A between the strands 542a, 544a, 542b, 544b of the loop packs 526a, 526b decreases. As a result, the pressure elements 528a, 530a, 528b, 530b approach each other until their respective contact surfaces 532a534b come into contact with each other. If the contact surfaces 532, 534 of the corresponding pressure elements 528a, 530a, 528b, 530b abut each other, there is a progressive increase in stiffness and the Elastomeric bodies 512a and 512b continue to be deformed by absorbing the compressive force generated by the tensile forces on pairs of approaching strands 542a, 542b, and 544a, 544b from the compression members 528, 530 under elastic deformation. In other words, the power transmission device 610 is relatively "soft" at low tensile load until it comes to the mutual abutment of the pressure elements 528a, 530a, 528b, 530b. Accordingly, the rigidity of the power transmission assembly 610 increases under tensile load until the respective strands 542a, 544b and 542a, 542b of the loop packages 526a and 526b are quasi-parallel due to the tensile load and the lateral force generated by them transversally approaches zero.

FIG. 20 is a perspective view of a power transmission member 710 according to an eighth embodiment of the invention.

In FIG. 20 it can already be seen that a further recess 760 is provided in the elastomer body 712, which extends transversely to the axial direction of the bushes 718, 720 through the elastomer body 712. The recess 760 is formed between the deformations 754a, 756a and 756b,

Figures 21a to 21c show various views of the Schiingenpakets 726, which wraps around the bushes 718, 720 in the wrapping area U and is supported by the flanged bushes 722 and 724 in the axial direction.

In particular, Figures 21b and 21c show the sub-strands 742a and 744a, 744b of the sling package 726 in the region between the jacks 718 and 720, i. the strands 742, 744 of the sling package 726 are divided into individual slices 742a and 744a, 744b in the area between the bushes 718, 720. The partial strands 742a, 744a and 744b each have a bulge 754a and 754b and 756a and 756b. The partial strands 742a, 744a and 744b which are each arched in the axial direction of the bushes 718, 720 in the opposite direction. In other words, the sub-strands 742a, 742b, 744a, 744b define a distance A between them.

In the area between the bushes 718 and 720, the partial strands 742a, 742b, 744a, 744b are individually embedded in the elastomer body 712, whereby the recess 758 is fixed in the elastomer body 712. Figures 22a and 22b show a plan view and a front view of the power transmission member 710.

Upon tensile loading of the force transmitting member 710, the predetermined deformed sub-strands 742a, 744a, 744b of the strands 742, 744 of the loop package 726 are elastically deformed until they transition to a nearly stretched condition. As a result, the elastomer body 712 is deformed in the region of the recess 758 until the recess 760 is almost released.

In other words, the stiffness of the power transmission device 710 is initially determined only over the strands 742, 744 of the loop packet 726, i. until the sub-strands 742a, 744a, 744b assume a stretched or parallel state. Due to the extension of the strands 742, 744, the elastomeric body 712 is deformed such that the recess 758 is almost canceled and that of

Elastomer mass surrounded sub strands 742a, 744a, 744b abut each other. Thereby, the rigidity of the power transmission member is progressively increased.

Figure 23a shows a front view of a resilient power transmission member 810 according to a ninth embodiment of the invention. The power transmission member 810 corresponds structurally as far as possible to the described with reference to the figures 1 to 8 embodiments of the invention.

In the region of the force transmission member 810 between the bushings 818 and 820, the recess 840 is seen in the rubber-elastic body 812. In this area, between the bushes 818 and 820, the spaced-apart pressure elements 828 and 830 are arranged, each having a contact surface 832 and 834. According to this embodiment, the abutment surfaces 832, 834 form the side surfaces of the recess 840 extending parallel to the longitudinal axis L. Between the two abutment surfaces 832 and 840, the recess 840 extends semicircularly.

In the elastomeric body 812, the openings 836, 838 are formed, which together with the pressure elements 828 and 830 form the pressure-receiving device, by means of which the rigidity of the force transmission member can be increased progressively under a pressure load. The openings 836, 838 extend through the elastomeric body 812 and are formed adjacent to the pressure elements 828, 830. FIG. 23b shows a sectional view along the section line AA from FIG. 23a. In FIG. 23b, insert parts 854, 856 can be seen, which are provided in the region of openings 836 and 838 on the strands 842 and 844 of the loop package 826 and which give the openings 836 and 838 the crown shape shown in FIG. 23a.

In a tensile load of the power transmission member 810, the Schiingenpaket 826 is stretched and the distance A between the strands 842 and 844 of Schlingenpa- kets 826 decreases. As a result, the pressure elements 828, 830 approach each other until they come into abutment with their contact surfaces 832, 834. If the abutment surfaces 832, 834 of the pressure elements 828, 830 abut each other, the elastomer body 812 in the region of the openings 836, 838 can only be further deformed by the pressure force generated by the strands 842, 844 approaching each other as a result of glazing and the deformation of the pressure elements 828 , 830 and the openings 836, 838 is received.

The inserts 854 and 856 will be discussed in more detail with reference to FIGS. 24a and 24b.

Figure 23c shows a sectional view along the section line B-B of Figure 23a.

In Figure 23c can be seen provided at the axial ends of the sockets 818, 820 flange bushings 822 and 824, which are provided for the axial support of the Schiingenpakets 826.

FIGS. 24a and 24b show a front view and a perspective view of the bushes 818, 820 and of the bushing package 826, which wraps around the bushes, with the inserts 854 and 856 arranged thereon.

The inserts 854 and 856, as well as the bushes 818, 820, the collar bushes 822, 824 and the loop package 826, are encased in the elastomeric jacket 812 (FIG. 23a).

The inserts 854 and 856 have two plate-shaped portions 854a, 856a, 856b, between which a strip-shaped portion 854c, 856c extends. With their portions 854a, 854c and 856a, 856b, 856c, the inserts 854 and 856 of the strands 842 and 844 of the sling package 826 partially surround each other or abut individual surfaces of the sling package 826. The strip-shaped sections 854c and 856c are opposed to each other and form with their contoured surface a wall portion of the openings 836 and 838 (Figure 23a). The inserts 854 and 856 are provided in the region of the largest distance A between the strands 842 and 844 on the Schiingenpakete 826 and support the transmission of the transverse force generated by the Schiingenpaket 826 on the elastomer body 812 bzw., on the pressure receiving device.

Figure 25 shows a coupling 1000 for torque transmission between two shaft sections (not shown).

The coupling 1000 has a first flange 1002 and a second flange 1004. The first flange 1002 has a plurality of fasteners 1006 and the second flange 1004 has a plurality of fasteners 1008. A fastener 1006 of the first flange 1002 and a fastener 1008 of the second flange 1004 are interconnected via a power transmission member 10 according to one of the embodiments described above. The fasteners 1006, 1008 may be bolts or screws that can be screwed into the flanges 1002 and 1004.

The first flange 1002 is star-shaped, whereas the second flange 1004 is disk-shaped. The star-shaped first flange 1002 has five arms 1010, in each of which a screw 1006 is screwed.

Between the individual arms 1010 or in recesses or recesses 1012 of the first flange 1002 can be seen the screws 1008, which are bolted to the two ^¬ th flange 1004 and protrude into the recesses 1012 of the first flange. In the second flange 1004 recesses 1014 are provided, in which protrude the bolted to the first flange 1002 fasteners 1006. The fasteners 1006 and 1008 of the first flange 1002 and the second flange 1004 are paired over a

Power transmission member 10 connected together. The power transmission members 10 are thereby supported by disks 1016 on the screws 1008.

Axial and / or angular offsets between the shaft sections to be connected can be compensated with the coupling 1000.

Claims

claims

1. Elastic force transmission member (10), in particular for the transmission of torques, with:

at least two bushes (318, 320) for connection to at least two power transmission components, and

at least one loop bundle (26) embedded in an elastomer compound, which has at least two opposing, freely elastically deformable strands (42, 44) in the area between the at least two bushes (18, 20), the at least two opposite strands (42, 44) the at least one loop package (26) is formed (46, 48) in the region between the at least two bushes (18, 20) each with at least one predetermined deformation, wherein at least one predetermined deformation (46, 48) of the at least two opposite strands (42, 44) is elastically deformable such that the rigidity of the force transmission member (10) increases progressively under a tensile load.

2. Elastic force transmission member (10) according to claim 1,

characterized in that the at least two opposite strands (42, 44) have at least one such deformation (46, 48), that in each case starting from one of the bushes (18, 20), the distance between the strands (42, 44) of the Schiingenpakets (26) changed until a predetermined distance (A) between the strands (42, 44) is established in an area.

3. Elastic force transmission member (10) according to claim 2,

characterized in that in the region of the predetermined distance (A) the greatest distance between the opposite strands (42, 44) of the at least one Schiingenpakets (26) is present.

4. An elastic force transmission member (410) according to claim 2,

characterized in that in the region of the predetermined distance (A) the smallest distance between the strands (442, 444) of the Schiingenpakets (426) is present.

5. Elastic force transmission member (10) according to any one of claims 1 to 3, characterized in that in a region of the predetermined deformation (16, 48), in the at least two strands (42, 44) of the at least one Schiingenpakets (26) a at least one pressure receiving device (28, 30, 36, 38) is arranged, wherein the at least one pressure receiving device (28, 30, 36, 38) is designed such that the rigidity of the force transmission member (10) Progressively increased at a tensile load.

6. Elastic force transmission member (10) according to claim 5,

characterized in that the at least one pressure receiving means (28, 30, 36, 38) at least one pressure element (28, 30) which extends at least partially transverse to the longitudinal axis (L) of the power transmission device (10).

7. Elastic force transmission member (10) according to claim 5 or 6,

characterized in that the at least one pressure receiving means (28, 30, 36, 38) comprises at least one opening (36, 38) in the elastomeric body (12) disposed between the at least one pressure member (28, 30) and at least one of the two strands (42, 44) of the Schiingenpakets (26) is arranged.

8. Elastic force transmission member (10) according to any one of claims 1 to 7, characterized in that the at least two opposite strands (42, 44) in the region between the two bushes (14, 16) at least one point (46, 48) a Distance (A) to each other, which is greater than the diameter of the bushes (14, 16).

9. Elastic force transmission member (10) according to any one of claims 5 to 8, characterized in that the pressure receiving means (28, 30) at least two pressure elements (28, 30) which engage in a tensile load of the power transmission member (10) to each other.

10. Elastic force transmission member (10) according to any one of claims 6 to 9, characterized in that the at least one pressure element (26) integral with the elastomer body (12) of the power transmission device (10) is formed.

11. Elastic force transmission member (10) according to any one of claims 1 to 10, characterized in that the elastic force transmission member has at least two Schiingenpakete (26), wherein the at least two Schiingenpakete (26) are arranged and provided with a predetermined deformation that the largest distance (A) between the strands (42, 44) of the one Schiingenpaketes (26) and the strands (42, 44) of the other Schiingenpakets (26) in the axial direction of the bushes (14, 16) sets.

12. Elastic force transmission member (10) according to claim 11,

characterized in that the opposite strands (42, 44) of the at least two Schiingenpakete (26) are each provided with a predetermined deformation in the axial direction of the bushes (18, 20), wherein the strands (42, 44) of the one Schiingenpakets (26 ) are predetermined deformed axially in the opposite direction, as the strands (42, 44) of the other Schiingenpaketes (26).

13. Elastic force transmission member (710) according to any one of claims 1 to 10, characterized in that the at least two opposite strands (742, 744) of the at least one Schiingenpakets (726) in the region between the bushes (718, 720) in each case two partial strands ( 742a, 742b, 744a, 744b), wherein the partial strands (742a, 742b, 744a, 744b) are deformed in the axial direction of the bushes (718, 720) opposite to each other.

14. Elastic force transmission member (10) according to any one of claims 1 to 13, characterized in that the at least one predetermined deformation have a kink (46, 48) with a predetermined bending angle.

15. An elastic force transmission member (510) according to any one of claims 1 to 13, characterized in that the at least one predetermined deformation has a curvature or bulge (554, 556).

16. An elastic force transmission member (310) according to any one of claims 1 to 15, characterized in that the at least one Schiingenpaket (326) via at least two flange bushings (322, 324) in a predetermined axial position on one of the bushings (318, 320) held becomes.

17. Elastic force transmission device with at least two of the power transmission devices according to one of claims 1 to 16

18. Coupling device (1000) for transmitting torques between two shaft sections, with

a first flange (1002), and

a second flange (1004),

wherein the first and the second flange (1002, 1004) each having a plurality of fastening elements (1006, 1008), and a fastener (1006) of the first flange (1002) and a fastener (1008) of the second Flan ^¬ ULTRASONIC (1004) are each interconnected via at least one power transmission member (10) according to any one of claims 1 to 16 or at least one power transmission device (610) according to claim 18.

19. Coupling device (1000) according to claim 18,

characterized in that the first and / or the second flange (1002, 1004) recesses (1010, 1012), in which the fastening elements (1006, 1008) of the respective other flange (1002, 1004) protrude.