DE202016009127U1 - Elastic joint body - Google Patents

Abstract

Elastic joint body (10) for a shaft arrangement for the articulated connection of two shaft sections
- A plurality of bushings (14), the central axes (M _B ) of the bushings (14) lying on a circle (K) around the central axis (M _G ) of the elastic articulated body (10), the diameter of this circle being the connection diameter ( LK) of the elastic joint body indicates,
- A plurality of thread bundles (24, 26, 28) for coupling at least two bushings, each thread bundle (24, 26, 28) having a predetermined axial extent, with at least two thread bundles (24, 26) in a shear path of the elastic joint body ( 10) and at least one bundle of threads (28) are arranged in a stretch of the elastic joint body (10),
- at least one support device for guiding the bundles of threads (24, 26, 28), which has a plurality of collar elements (18, 20), the plurality of collar elements (18, 20) having at least two collar elements (18, 20) with at least two comprises sections extending in the radial direction, the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction each accommodating at least one thread bundle (24, 26) arranged in a pushing section, wherein the at least one thread package (28) arranged in a tension section is arranged in the axial direction of the bushes (14) between the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction , and
- at least one elastic casing (12) in which the bundles of threads (24, 26, 28) and the at least one support device are at least partially embedded, with the ratio u ₁ being between the sum of the axial extent (I ₁ , I ₂ , I _n ) of the thread packages (24, 26, 28) and the connection diameter (LK) 0.05 ≤ u ₁ ≤0.35 applies.

Description

The present invention relates to an elastic joint body for a shaft arrangement for the articulated connection of two shaft sections.

Such articulated bodies are known from the prior art and, for example, in DE 10 2004 029 989 A1 and DE 37 34 089 A1 disclosed.

DE 10 2004 029 989 A1 discloses a joint body with bushings, at the axial ends of which collar elements are provided.

DE 37 34 089 A1 discloses an elastic joint having fasteners evenly spaced circumferentially and belts of fiber strand bundles wrapped around pairs of adjacent fasteners. The belts and fasteners are housed in an elastomeric material.

It is an object of the present invention to provide an elastic joint body of the type described at the outset, which has a longer service life with a simple and compact structure.

This object is achieved with an elastic joint body having the features of claim 1.

In the context of the present invention, the term “axial extension” of various components, which is used several times below, refers to an extension in the axial direction of the joint body. This includes a central center axis, around which the joint body rotates when torque is transmitted, and a series of bushings, the center axes of which run essentially parallel to the central center axis of the joint body.

Further embodiments are specified in the independent and dependent claims.

• - eine Mehrzahl von Buchsen zur Verbindung mit den Wellenabschnitten, wobei die Mittelachsen der Buchsen auf einem gedachten Kreis um die Mittelachse des elastischen Gelenkkörpers liegen, wobei der Durchmesser dieses Kreises den Verbindungsdurchmesser des elastischen Gelenkkörpers angibt,
• - eine Mehrzahl von Fadenpaketen zur Kopplung wenigstens zweier Buchsen, wobei jedes Fadenpaket eine vorbestimmte axiale Erstreckung aufweist,
• - wenigstens eine Stützeinrichtung zur Führung der Fadenpakete, die eine Mehrzahl von Bundelementen aufweist, wobei die Mehrzahl der Bundelemente wenigstens ein Bundelement mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten umfasst, wobei die wenigstens zwei Bundelemente mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten jeweils wenigstens ein in einer Schubstrecke angeordnetes Fadenpaket aufnehmen, wobei das wenigstens eine in einer Zugstrecke angeordnete Fadenpaket in axialer Richtung der Buchsen zwischen den wenigstens zwei Bundelementen mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten angeordnet ist, und
• - wenigstens eine elastische Ummantelung, in die zumindest die Fadenpakete und die wenigstens eine Stützeinrichtung zumindest teilweise eingebettet sind,

wobei für das Verhältnis u₁ zwischen der Summe der axialen Erstreckung der Fadenpakete und dem Verbindungsdurchmesser 0,05 ≤ u₁ ≤0,35 gilt.The elastic joint body according to the invention comprises

• - a plurality of bushes for connection to the shaft sections, the central axes of the bushes lying on an imaginary circle around the central axis of the elastic joint body, the diameter of this circle indicating the connection diameter of the elastic joint body,
• - a plurality of thread bundles for coupling at least two bushings, each thread bundle having a predetermined axial extension,
• - at least one support device for guiding the thread bundles, which has a plurality of collar elements, the plurality of collar elements comprising at least one collar element with at least two sections extending in the radial direction, the at least two collar elements each having at least two sections extending in the radial direction accommodate at least one thread bundle arranged in a push section, the at least one thread bundle arranged in a pull section being arranged in the axial direction of the bushings between the at least two collar elements with at least two sections extending in the radial direction, and
• - at least one elastic casing in which at least the bundles of threads and the at least one support device are at least partially embedded,

where 0.05≦u ₁ ≦0.35 applies to the ratio u ₁ between the sum of the axial extension of the thread bundles and the connection diameter.

The elastic joint body according to the invention has tensile and shear distances. The pull and push paths alternate in the circumferential direction of the elastic joint body. Depending on the direction of the load (direction of rotation), the bundles of threads absorb tensile forces. The joint device can thus transmit torques in two directions of rotation. In the event of a torque load in one direction, the bundle of threads arranged in the respective tension section absorbs tensile forces (tension operation). In the event of torque loading in the other direction, the bundle of threads absorbs tensile forces in the respective push section (push mode). Accordingly, a bush can be wrapped around by at least one thread bundle arranged in the push section and at least one thread bundle arranged in the pull section, which are arranged offset to one another on the bush in the direction of the central axis of the bush. Starting from a socket, the thread bundle arranged in the pulling section extends in the direction of an adjacent socket, whereas the thread bundle arranged in the pushing section extends in the direction of another socket.

wobei I₁, I₂, ..., I_n die jeweils axiale Erstreckung der Fadenpakete in der Zugstrecke und der Schubstrecke und LK den Verbindungsdurchmesser des elastischen Gelenkkörpers angeben. I₁ kann beispielsweise die axiale Erstreckung eines Fadenpakets in der Schubstrecke und I₂ die axiale Erstreckung eines Fadenpakets in der Zugstrecke angeben. Als „axiale Erstreckung“ wird die Erstreckung der entsprechenden Komponenten in Richtung der Mittelachse der Buchsen und in Richtung der Mittelachse des elastischen Gelenkkörpers verstanden. Die Mittelachsen der Buchsen und die Mittelachse des elastischen Gelenkkörpers verlaufen im unbelasteten Zustand des Gelenkkörpers im Wesentlichen parallel zueinander.The ratio u ₁ results from $${\text{and}}_{\text{1}}=\frac{{\text{l}}_{\text{1}}+{\text{l}}_{\text{2}}+...+{\text{l}}_{\text{n}}}{\text{LK}}$$

where I ₁ , I ₂ , ..., I _n is the respective axial extent of the thread bundles in the tension and shear zones cke and LK specify the connection diameter of the elastic joint body. I ₁ can indicate, for example, the axial extent of a thread bundle in the push section and I ₂ the axial extent of a thread bundle in the pull section. The “axial extent” is understood to mean the extent of the corresponding components in the direction of the central axis of the bushings and in the direction of the central axis of the elastic joint body. The central axes of the bushings and the central axis of the elastic joint body run essentially parallel to one another in the unloaded state of the joint body.

The bushings of the elastic joint body are used to connect the elastic joint body to the shaft sections of a shaft arrangement. A flange may be provided on each of the shaft portions to be connected to the elastic joint body by connecting means such as screws and bolts. These connecting means can extend through the sockets. The bushings can bear against a flange with one of their end faces. A screw head or a head of a bolt can be supported on the respective other end face of the sockets. The bushings are arranged in such a way that the central axes of the bushings lie on an imaginary circle around the central axis of the elastic joint body. The diameter of this circle corresponds to the connection diameter LK.

Due to the ratio u ₁ in a range of 0.05≦u ₁ ≦0.35, a compact design of the elastic joint body is achieved, with which high torques can nevertheless be transmitted. Despite its compact design, the elastic joint body has a high power density. In addition, an elastic joint body with the ratio u ₁ between the sum of the axial extent of the bundles of threads and the diameter of the connection has a longer service life.

In addition, the thread bundles are supported by the support device of the joint body according to the invention in the peripheral region of the bushing that is heavily loaded during operation of the joint body and friction effects between the thread bundles made of the same materials are avoided.

The support device can be composed of axially outer collar elements and one or more axially inner collar elements. The axially outer collar elements are arranged in an axial end area of the bushings. The axially inner collar elements are arranged in the axial direction between the axially outer collar elements.

The collar element with two sections extending in the radial direction can have a section which extends in the axial direction and which connects the two radial sections to one another. The collar element can thus have a U-shaped cross section. Such a collar element can accommodate a bundle of threads between its radial sections or in its U-shape. Such a collar element can, for example, be assigned to the bundle of threads in the drawing section and accommodate this bundle of threads. The bundle of threads can be separated from the one or more further bundles of threads in the drawing section by the collar element. The material thickness of the collar elements is not taken into account when determining the axial extent of the bundles of threads.

According to one embodiment, the ratio u ₁ between the sum of the axial extent of the thread bundles and the connection diameter can be 0.1≦u ₁ ≦0.3. In particular, this ratio can be 0.12≦u ₁ ≦0.28.

wobei wiederum I₁, I₂, ..., I_n jeweils die axiale Erstreckung der Fadenpakete betrifft und wobei d_n den Außendurchmesser des betrachteten Bundelements bezeichnet. Es kann der Außendurchmesser eines Bundelements mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten herangezogen werden. Die beiden radialen Abschnitte eines derartigen Bundelements können den gleichen Außendurchmesser aufweisen, sodass der Außendurchmesser eines der radialen Abschnitte herangezogen werden kann. Ein derartiges Bundelement mit zwei radialen Abschnitten kann als axial inneres Bundelement angeordnet sein.Furthermore, the elastic joint body can also have a predetermined ratio between the axial extension of the thread bundles and the outer diameter of at least one collar element. The outer diameter of the collar element is determined by the extension of the radial section of the collar element, ie the outer peripheral edge of the radial section of the collar element defines the outer diameter of the collar element. In particular, the outside diameter of an axially inner collar element can be used. This ratio between the sum of the axial extent of the thread bundles I ₁ , I ₂ , I _n and the outer diameter d _n of at least one collar element is referred to below as the ratio u ₂ . 0.3≦u ₂ ≦1 can apply to the ratio u ₂ . The ratio u ₂ can preferably be 0.4≦u ₂ ≦0.9. The ratio u ₂ results from: $${\mathrm{and}}_2=\frac{l_1+l_2+...+l_n}{{\mathrm{i.e}}_n},$$

where in _turn I ₁ , _{I 2} , . The outer diameter of a collar element with at least two sections extending in the radial direction can be used. The two radial sections of such a collar element can have the same outside diameter, so that the outside diameter of one of the radial sections can be used. Such a collar element with two radial sections can be arranged as an axially inner collar element.

The elastic joint body can also have a predetermined ratio between the axial Have extension of the support device and the outer diameter of a collar element. This ratio is referred to below as ratio u ₃ . The ratio u ₃ between the axial extent of the support device and the outer diameter of a collar element can be in a range of 0.6≦u ₃ ≦1.2. In particular, the ratio u ₃ can be in a range of 0.8≦u ₃ ≦1. The axial extent of the support device results from the sum of the axial extent of the thread bundles (I ₁ , I ₂ , L _n ) and the thickness (a ₁ , a ₂ , a ₃ , a _n ) of the radial sections of the collar elements. In this context, “thickness of the radial sections of the collar elements” is to be understood as meaning the axial extension of the radial section of a collar element. The axial extent of each individual bundle of threads corresponds to the predetermined axial distance between two adjacent radial sections of one or more collar elements. The ratio results from: $${\mathrm{and}}_3=\frac{l_1+l_2+...+l_n+a_1+a_2+a_3+...+a_n}{{\mathrm{i.e}}_n},$$

The elastic joint body can have a predetermined ratio between the axial extent of the support device and the connection diameter LK. This ratio is called ratio u ₄ . The ratio u ₄ results from: $${\mathrm{and}}_4=\frac{l_1+l_2+...+l_n+a_1+a_2+a_3+...+a_n}{LK},$$

The axial extent of the support device results in turn from the sum of the axial extent of the thread bundles (I ₁ , I ₂ , I _n ) and the thickness (a ₁ , a ₂ , a ₃ , a _n ) of the radial sections of the collar elements. The ratio u ₄ can be 0.1≦u4≦0.45, preferably 0.15≦u4≦0.4.

A predetermined ratio can also apply to the axial extension of a thread bundle with respect to the outer diameter of the collar element assigned to this thread bundle. In particular, there can be a predetermined ratio u ₅ between the axial extension of a thread bundle I _n in the tension section and the outside diameter d _n of a collar element associated with this thread packet in the tension section. The ratio u ₅ can be 0.2≦u ₅ ≦0.6. In particular, u ₅ can be in a range of 0.25≦u ₅ ≦0.5.

• - einer Mehrzahl von Buchsen, wobei die Mittelachsen der Buchsen auf einem Kreis um die Mittelachse des elastischen Gelenkkörpers liegen, wobei der Durchmesser dieses Kreises den Verbindungsdurchmesser des elastischen Gelenkkörpers angibt,
• - eine Mehrzahl von Fadenpaketen zur Kopplung wenigstens zweier Buchsen, wobei jedes Fadenpaket eine vorbestimmte axiale Erstreckung aufweist, wobei wenigstens zwei Fadenpakete in einer Schubstrecke des elastischen Gelenkkörpers und wenigstens ein Fadenpaket in einer Zugstrecke des elastischen Gelenkkörpers angeordnet sind,

• - wenigstens einer Stützeinrichtung zur Führung der Fadenpakete, die eine Mehrzahl von Bundelementen aufweist, wobei die Mehrzahl der Bundelemente wenigstens ein Bundelement mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten umfasst, wobei die wenigstens zwei Bundelemente mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten jeweils wenigstens ein in einer Schubstrecke angeordnetes Fadenpaket aufnehmen, wobei das wenigstens eine in einer Zugstrecke angeordnete Fadenpaket in axialer Richtung der Buchsen zwischen den wenigstens zwei Bundelementen mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten angeordnet ist, und
• - wenigstens einer elastischen Ummantelung, in die zumindest die Fadenpakete und die wenigstens eine Stützeinrichtung zumindest teilweise eingebettet sind,

wobei das Verhältnis u₂ zwischen der Summe der axialen Erstreckung der Fadenpakete und dem Außendurchmesser wenigstens eines Bundelements 0,4 ≤ u₂ ≤ 0,9 ist.The above-mentioned object can also be achieved according to the invention with an elastic joint body with the following features:

• - a plurality of bushings, the central axes of the bushings lying on a circle around the central axis of the elastic joint body, the diameter of this circle indicating the connection diameter of the elastic joint body,
• - a plurality of thread bundles for coupling at least two bushings, each thread bundle having a predetermined axial extent, with at least two thread bundles being arranged in a pushing section of the elastic joint body and at least one thread bundle being arranged in a pulling section of the elastic joint body,

• - at least one support device for guiding the bundles of threads, which has a plurality of collar elements, the plurality of collar elements comprising at least one collar element with at least two sections extending in the radial direction, the at least two collar elements each having at least two sections extending in the radial direction accommodate at least one thread bundle arranged in a push section, the at least one thread bundle arranged in a pull section being arranged in the axial direction of the bushings between the at least two collar elements with at least two sections extending in the radial direction, and
• - at least one elastic casing, in which at least the bundles of threads and the at least one support device are at least partially embedded,

where the ratio u ₂ between the sum of the axial extension of the thread bundles and the outside diameter of at least one collar element is 0.4≦u ₂ ≦0.9.

• - eine Mehrzahl von Buchsen, wobei die Mittelachsen der Buchsen auf einem Kreis um die Mittelachse des elastischen Gelenkkörpers liegen, wobei der Durchmesser dieses Kreises den Verbindungsdurchmesser des elastischen Gelenkkörpers angibt,
• - eine Mehrzahl von Fadenpaketen zur Kopplung wenigstens zweier Buchsen, wobei jedes Fadenpaket eine vorbestimmte axiale Erstreckung aufweist, wobei wenigstens zwei Fadenpakete in einer Schubstrecke des elastischen Gelenkkörpers und wenigstens ein Fadenpaket in einer Zugstrecke des elastischen Gelenkkörpers angeordnet sind,
• - wenigstens einer Stützeinrichtung zur Führung der Fadenpakete, die eine Mehrzahl von Bundelementen aufweist, wobei die Mehrzahl der Bundelemente wenigstens ein Bundelement mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten umfasst, wobei die wenigstens zwei Bundelemente mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten jeweils wenigstens ein in einer Schubstrecke angeordnetes Fadenpaket aufnehmen, wobei das wenigstens eine in einer Zugstrecke angeordnete Fadenpaket in axialer Richtung der Buchsen zwischen den wenigstens zwei Bundelementen mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten angeordnet ist, und
• - wenigstens einer elastischen Ummantelung, in die zumindest die Fadenpakete sowie die wenigstens eine Stützeinrichtung zumindest teilweise eingebettet sind,

wobei das Verhältnis u₃ zwischen der axialen Erstreckung der Stützeinrichtung und dem Außendurchmesser eines Bundelements 0,8 ≤ u₃ ≤ 1 ist, wobei die axiale Erstreckung der Stützeinrichtung der Summe aus der axialen Erstreckung der Fadenpakete und der Dicke der radialen Abschnitte der Bundelemente entspricht.Furthermore, the above-mentioned object of the invention can be achieved with an elastic joint body which has the following features:

• - a plurality of bushes, the central axes of the bushes lying on a circle around the central axis of the elastic articulated body, the diameter of this circle indicating the connection diameter of the elastic articulated body,
• - a plurality of thread bundles for coupling at least two bushings, each thread bundle having a predetermined axial extent, with at least two thread bundles being arranged in a pushing section of the elastic joint body and at least one thread bundle being arranged in a pulling section of the elastic joint body,
• - At least one support device for guiding the bundles of threads, which has a plurality of bundles ments, wherein the plurality of collar elements comprises at least one collar element with at least two sections extending in the radial direction, with the at least two collar elements with at least two sections extending in the radial direction each receiving at least one bundle of threads arranged in a thrust section, the at least one thread package arranged in a tension section is arranged in the axial direction of the bushings between the at least two collar elements with at least two sections extending in the radial direction, and
• - at least one elastic casing, in which at least the bundles of threads and the at least one support device are at least partially embedded,

where the ratio u ₃ between the axial extent of the support device and the outside diameter of a collar element is 0.8 ≤ u ₃ ≤ 1, the axial extent of the support device corresponding to the sum of the axial extent of the thread bundles and the thickness of the radial sections of the collar elements.

• - einer Mehrzahl von Buchsen, wobei die Mittelachsen der Buchsen auf einem Kreis um die Mittelachse des elastischen Gelenkkörpers liegen, wobei der Durchmesser dieses Kreises den Verbindungsdurchmesser des elastischen Gelenkkörpers angibt,
• - eine Mehrzahl von Fadenpaketen zur Kopplung wenigstens zweier Buchsen, wobei jedes Fadenpaket eine vorbestimmte axiale Erstreckung aufweist, wobei wenigstens zwei Fadenpakete in einer Schubstrecke des elastischen Gelenkkörpers und wenigstens ein Fadenpaket in einer Zugstrecke des elastischen Gelenkkörpers angeordnet sind,
• - wenigstens einer Stützeinrichtung zur Führung der Fadenpakete, die eine Mehrzahl von Bundelementen aufweist, wobei die Mehrzahl der Bundelemente wenigstens ein Bundelement mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten umfasst, wobei die wenigstens zwei Bundelemente mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten jeweils wenigstens ein in einer Schubstrecke angeordnetes Fadenpaket aufnehmen, wobei das wenigstens eine in einer Zugstrecke angeordnete Fadenpaket in axialer Richtung der Buchsen zwischen den wenigstens zwei Bundelementen mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten angeordnet ist, und
• - wenigstens einer elastischen Ummantelung, in die zumindest die Fadenpakete und die wenigstens eine Stützeinrichtung zumindest teilweise eingebettet sind,

wobei das Verhältnis u₄ zwischen der axialen Erstreckung der Stützeinrichtung und dem Verbindungsdurchmesser (LK) 0,15 ≤ u₄ ≤ 0,4 ist, wobei die axiale Erstreckung der Stützeinrichtung der Summe aus der axialen Erstreckung der Fadenpakete und der Dicke der radialen Abschnitte der Bundelemente entspricht.The present invention also relates to an elastic joint body with

• - a plurality of bushings, the central axes of the bushings lying on a circle around the central axis of the elastic joint body, the diameter of this circle indicating the connection diameter of the elastic joint body,
• - a plurality of thread bundles for coupling at least two bushings, each thread bundle having a predetermined axial extent, with at least two thread bundles being arranged in a pushing section of the elastic joint body and at least one thread bundle being arranged in a pulling section of the elastic joint body,
• - at least one support device for guiding the bundles of threads, which has a plurality of collar elements, the plurality of collar elements comprising at least one collar element with at least two sections extending in the radial direction, the at least two collar elements each having at least two sections extending in the radial direction accommodate at least one thread bundle arranged in a push section, the at least one thread bundle arranged in a pull section being arranged in the axial direction of the bushings between the at least two collar elements with at least two sections extending in the radial direction, and
• - at least one elastic casing, in which at least the bundles of threads and the at least one support device are at least partially embedded,

where the ratio u ₄ between the axial extent of the support device and the connection diameter (LK) is 0.15 ≤ u ₄ ≤ 0.4, the axial extent of the support device being the sum of the axial extent of the thread bundles and the thickness of the radial sections of the Corresponds to fret elements.

• - einer Mehrzahl von Buchsen, wobei die Mittelachsen der Buchsen auf einem Kreis um die Mittelachse des elastischen Gelenkkörpers liegen, wobei der Durchmesser dieses Kreises den Verbindungsdurchmesser des elastischen Gelenkkörpers angibt,
• - wenigstens ein Fadenpaket zur Kopplung wenigstens zweier Buchsen, wobei jedes Fadenpaket eine vorbestimmte axiale Erstreckung aufweist, wobei wenigstens zwei Fadenpakete in einer Schubstrecke des elastischen Gelenkkörpers und wenigstens ein Fadenpaket in einer Zugstrecke des elastischen Gelenkkörpers angeordnet sind,
• - wenigstens einer Stützeinrichtung zur Führung der Fadenpakete, die eine Mehrzahl von Bundelementen aufweist, wobei die Mehrzahl der Bundelemente wenigstens ein Bundelement mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten umfasst, wobei die wenigstens zwei Bundelemente mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten jeweils wenigstens ein in einer Schubstrecke angeordnetes Fadenpaket aufnehmen, wobei das wenigstens eine in einer Zugstrecke angeordnete Fadenpaket in axialer Richtung der Buchsen zwischen den wenigstens zwei Bundelementen mit wenigstens zwei sich in radialer Richtung erstreckenden Abschnitten angeordnet ist, und
• - wenigstens einer elastischen Ummantelung, in die zumindest die Fadenpakete und die wenigstens eine Stützeinrichtung zumindest teilweise eingebettet sind,

wobei das Verhältnis u₅ zwischen der axialen Erstreckung (I₂) eines Fadenpakets in der Zugstrecke und dem Außendurchmesser (d₂) eines diesem Fadenpaket zugeordneten Bundelements 0,25 ≤ u₅ ≤ 0,5 ist.To achieve the object of the invention can also be used with an elastic joint body

• - a plurality of bushings, the central axes of the bushings lying on a circle around the central axis of the elastic joint body, the diameter of this circle indicating the connection diameter of the elastic joint body,
• - at least one thread bundle for coupling at least two bushings, each thread bundle having a predetermined axial extent, with at least two thread bundles being arranged in a pushing path of the elastic joint body and at least one thread bundle being arranged in a pulling path of the elastic joint body,
• - at least one support device for guiding the bundles of threads, which has a plurality of collar elements, the plurality of collar elements comprising at least one collar element with at least two sections extending in the radial direction, the at least two collar elements each having at least two sections extending in the radial direction accommodate at least one thread bundle arranged in a push section, the at least one thread bundle arranged in a pull section being arranged in the axial direction of the bushings between the at least two collar elements with at least two sections extending in the radial direction, and
• - at least one elastic casing, in which at least the bundles of threads and the at least one support device are at least partially embedded,

where the ratio u ₅ between the axial extent (I ₂ ) of a thread bundle in the drawing section and the outside diameter (d ₂ ) of a collar element assigned to this thread bundle is 0.25≦u ₅ ≦0.5.

The at least one bundle of threads arranged in the drawing section can be accommodated in a collar element with at least two sections extending in the radial direction. Such a collar element can have a section which extends in the axial direction and which extends between the two radial sections. The collar element is fastened to the bush via the axial section. The extent of the axial section of the collar element can be matched to the predetermined axial extent of the bundle of threads. The collar element can thus have a U-shaped cross section. The bundle of threads can be accommodated in the tension section in this collar element.

Furthermore, the at least one bundle of threads arranged in the push section can be accommodated in a collar element with at least two sections extending in the radial direction. This collar element can also have an axial section which is provided between the two radial sections. This collar element can also be U-shaped. The U-shaped collar element can accommodate a bundle of threads in the pushing section.

The at least one thread bundle arranged in the push section can extend between the collar element with two sections extending in the radial direction and an axially outer collar element. The axially outer collar element can also be a collar element with two radial sections, in which another bundle of threads is accommodated.

At least one bundle of threads can extend in the axial direction between two collar elements with at least two sections extending in the radial direction.

It is conceivable, for example, for further bundles of threads to be guided between the axially outer collar elements with two radial sections and a central collar element with two radial sections. These further bundles of threads can each lie against a radial section of two different collar elements.

According to one embodiment, the axially outer collar elements can have an axial section that extends beyond a radial section of the collar element. In the case of a collar element with two radial sections, the axial section can extend in the axial direction beyond one of the two radial sections. For example, such a collar element can be arranged on the bushes in such a way that the axial section protrudes in the direction of one end of the bushes beyond one of the radial sections.

Furthermore, there can be a predetermined ratio between the axial extent of a thread bundle in the drawing section and the axial extent of a thread bundle in the drawing section. This ratio is called ratio u ₆ . The ratio u ₆ can be in a range of 0.1≦u ₆ ≦0.6. In particular, the ratio u ₆ can be equal to 0.5. This means that the bundle of threads in the pulling section has a larger cross-section than the bundle of threads in the pushing section. Thread bundles in the tension section absorb greater forces when the elastic joint body is in tension than the thread bundle in the shear section. The bundles of threads in the push section are subjected to tensile loads when the elastic joint body is in push mode, ie for example when reversing a motor vehicle when the elastic joint body is used in the drive train of a vehicle.

wobei h_n die radiale Erstreckung des radialen Abschnitts des jeweiligen Bundelements, b_n die Dicke, d.h. die Materialstärke, des axialen Abschnitts des jeweiligen Bundelements und I_n die axiale Erstreckung des diesem Bundelement zugeordneten Fadenpakets bezeichnen. Die radiale Erstreckung des radialen Abschnitts eines Bundelements kann im Wesentlichen der radialen Erstreckung eines Fadenpakets entsprechen, wenn das Fadenpaket an der Buchse oder an einem axialen Abschnitt des Bundelements anliegt.Furthermore, there can be a predetermined ratio between the radial extent of a collar element and the axial extent of a thread bundle assigned to this collar element. The radial extent of a collar element results from the difference between the outer diameter of the collar element and the inner diameter of an opening in the collar element, in which a bushing can be accommodated in sections. The radial extent of the collar element can also be determined from the sum of the thickness b of the axial section of the collar element and the radial extent h of the radial section, starting from the axial section of the collar element. This ratio is denoted as u ₇ . The ratio u ₇ can be in a range of 0.8≦u ₇ ≦2.0. The ratio u ₇ results from $${\text{and}}_7=\frac{{\text{H}}_n+{\text{b}}_{\text{n}}}{{\text{l}}_n}$$

where h _n denotes the radial extent of the radial section of the respective collar element, b _n denotes the thickness, ie the material strength, of the axial section of the respective collar element and I _n denotes the axial extent of the thread bundle associated with this collar element. The radial extent of the radial section of a collar element can essentially correspond to the radial extent of a bundle of threads when the bundle of threads rests against the bushing or against an axial section of the collar element.

If a collar element with two radial sections and an axial section extending between these radial sections, i.e. a collar element with a U-shaped cross section, is provided to accommodate the thread bundle in the tension section, the thickness a of the radial sections can be greater than or equal to the thickness b of the axial be sections. Accordingly, a _n ≥ b _n can apply. The thickness a can be ≥ 1.2 mm.

A cross-sectionally U-shaped collar member may be made of steel. The U-shaped collar member can be made by sintering, extrusion, bending from high strength steel, and burnishing.

According to one embodiment, the outer diameter d _Bai of at least one axially inner collar element is greater than the outer diameter of the at least one axially outer collar element d _Baa . Thus d _Bai > d _Baa can apply. In other words, the radial section of the axially inner collar element can protrude in the radial direction beyond the radial section of the axially outer collar element. This relationship allows the service life of the elastic joint body to be further increased under loads at a bending angle. The axially inner collar element can be a collar element with two sections extending in the radial direction. In the case of an axially inner collar element with two sections extending in the radial direction, the outer diameter of the two radial sections is usually the same size. The outer diameter of such a collar element can be determined starting from the outer peripheral edge of one of the two radial sections. To determine the outside diameter of such a collar element, it is therefore sufficient to use the outside diameter of one of the two radial sections.

The outside diameter of at least one axially inner collar element may be larger than the outside diameter of the at least one axially outer collar element. This relationship results in an elastic joint body with a compact structure, which nevertheless has a high power density and therefore a long service life. In the case of elastic joint bodies, the axially inner collar elements are often assigned to a bundle of threads in the tension section. Bundles of threads in the tension section are subjected to relatively high loads when the elastic joint body is in tension. Due to the larger outer diameter of the axially inner collar elements or the axially inner collar element compared to the outer diameter of the axially outer collar elements, the thread bundle in the tension section, particularly in the radial direction of the collar elements, can have a larger cross section than the thread bundles in the compression section, thereby increasing the service life of the elastic Joint body can be increased especially under loads at a bending angle. A deflection angle occurs when the shafts to be connected via the elastic joint body have an angular offset to one another. The axially inner collar element can be a collar element with two sections extending in the radial direction. However, it is also conceivable to use disk-shaped collar elements or collar elements with an L-shaped cross section as radially inner collar elements. In these cases, two bundle elements can be assigned to the bundle of threads arranged in the draw section.

The elastic body can be made, for example, from an elastomer, a thermoplastic elastomer, a silicone or rubber. A thread bundle is to be understood as meaning a tab-shaped element which is formed by a plurality of thread windings. A single thread or several threads can be wound in the form of a strap. The threads of the thread bundles can be connected to one another.

• 1 bis 3 Ansichten eines elastischen Gelenkkörpers gemäß einer ersten Ausführungsform der Erfindung;
• 4 und 5 Ansichten eines elastischen Gelenkkörpers gemäß einer zweiten Ausführungsform der Erfindung;
• 6 und 7 Ansichten eines elastischen Gelenkkörpers gemäß einer dritten Ausführungsform der Erfindung;
• 8 und 9 Ansichten eines elastischen Gelenkkörpers gemäß einer vierten Ausführungsform der Erfindung;
• 10 und 11 Ansichten eines elastischen Gelenkkörpers gemäß einer fünften Ausführungsform der Erfindung;
• 12 und 13 Ansichten eines elastischen Gelenkkörpers gemäß einer sechsten Ausführungsform der Erfindung;
• 14 und 15 Ansichten eines elastischen Gelenkkörpers gemäß einer siebten Ausführungsform der Erfindung;
• 16 und 17 Ansichten eines elastischen Gelenkkörpers gemäß einer achten Ausführungsform der Erfindung; und
• 18 und 19 Ansichten eines elastischen Gelenkkörpers gemäß einer neunten Ausführungsform der Erfindung.

Exemplary embodiments of the invention are described below with reference to the accompanying figures. They represent:

• 1 until 3 Views of an elastic joint body according to a first embodiment of the invention;
• 4 and 5 Views of an elastic joint body according to a second embodiment of the invention;
• 6 and 7 Views of an elastic joint body according to a third embodiment of the invention;
• 8th and 9 Views of an elastic joint body according to a fourth embodiment of the invention;
• 10 and 11 Views of an elastic joint body according to a fifth embodiment of the invention;
• 12 and 13 Views of an elastic joint body according to a sixth embodiment of the invention;
• 14 and 15 Views of an elastic joint body according to a seventh embodiment of the invention;
• 16 and 17 Views of an elastic joint body according to an eighth embodiment of the invention; and
• 18 and 19 Views of an elastic joint according to a ninth embodiment of the invention.

1 12 shows a plan view of an elastic joint body, generally designated 10. FIG.

The elastic joint body 10 has an elastic body 12 and bushings 14 . The bushings 14 have a flange-like head 16 at one of their ends. The respective other end of the sockets is designed without such a head. at the in 1 shown axial surface of the elastic joint body 10 are in the circumferential direction of the elastic joint body 10, the sockets 14 alternately arranged with their end with the head 16 and with their respective other end (without head). Collar elements 18 can be seen at the ends without a head. The collar elements 18 and the bushings 14 are at least partially embedded in the elastic body 12 .

The central axis of the elastic joint body 10 is denoted as M _G and the central axis of the bushings as M _B . When reference is made below to an axial direction or axial position, these statements always relate to the axial extension of one or both axes M _G and M _B .

The central axes M _B of all bushes 14 lie on an imaginary circle K around the central axis M _G of the elastic joint body 10. In other words, the central axes M _B of the bushes 14 all lie on a radius around the central axis M _G of the elastic joint body 10. The diameter of this imaginary circle K corresponds to the connection diameter LK.

2 shows a sectional view along the line II-II in 1 .

At the sockets 14 are next to the already in 1 shown collar element 18 and collar elements 20 and 22 are arranged. The collar elements 18, 20 and 22 form a support device for the axial support and guidance of thread bundles 24, 26, 28. The collar elements 18 and 20 are arranged on the axial end sections of the bushings 14. The collar element 22 is arranged between the collar elements 18 and 20 . The collar elements 18 and 20 thus form axially outer collar elements. The collar element 22 represents an axially inner collar element.

The axially outer collar elements 18 and 20 are in the form of L-shaped collars. The collar elements 18 and 20 accordingly have an axial section 18a and 20a which bears against the bushings 14 . Sections 18a and 20a are tubular. The axial end faces of these tubular sections 18a and 20a point in the direction of the axial ends of the bushings 14. The head 16 of the bushing 14 rests against the end face of the section 18a of the collar element 18. In addition to the axial sections 18a and 20a, the collar elements 18 and 20 also have radial sections 18b and 20b. The radial sections 18b and 20b extend outwards in the radial direction, starting from the axial sections 18a and 20a.

The axially inner collar element 22 is U-shaped in cross section. The collar element 22 has two radial sections 22a and 22b. An axial section 22c, which connects the two radial sections 22a and 22b to one another, extends between the two radial sections 22a and 22b. The collar element 22 receives the bundle of threads 28 . The distance between the radial sections 22a and 22b corresponds to the axial extension of the thread bundle 28. The thread bundle 28 is arranged in a stretch of the elastic joint body 10 and is thus loaded in the tensile operation of the elastic joint body 10 to train.

The bundles of threads 24 and 26 are arranged in a sliding section that is subjected to tensile loads when the elastic articulated body 10 is in the sliding mode. Since lower loads occur in the overrun operation of the elastic articulated body 10 , the bundles of threads 24 and 26 have a smaller cross-section overall than the bundle of threads 28 . The bundles of threads 24 and 26 are guided between the radial sections 22a and 22b of the collar element 22 and the radial sections 18b and 20b of the collar elements 18 and 20 . The axial distance between the radial sections 18b, 20b, 22a and 22b thus determines the cross section of the thread bundles 24 and 28.

In contrast to the bundle of threads 28 , the bundles of threads 24 and 26 bear directly against the outer peripheral surface of the bushing 14 , at least in sections. The bundle of threads 28 rests exclusively on the collar element 22 and therefore does not come into contact with the bushing 14 .

3 shows an enlarged detail of the sectional view according to FIG 2 . According to the view 3 different dimensions of the components of the elastic joint body 10 are entered.

a1:

Dicke (Erstreckung in Richtung der Mittelachse M_B der Buchse 14) des radialen Abschnitts 20b des Bundelements 20;

a2:

Dicke (Erstreckung in Richtung der Mittelachse M_B der Buchse 14) des radialen Abschnitts 22b des Bundelements 22;

a3:

Dicke (Erstreckung in Richtung der Mittelachse M_B der Buchse 14) des radialen Abschnitts 22a des Bundelements 22;

a4:

Dicke (Erstreckung in Richtung der Mittelachse M_B der Buchse 14) des radialen Abschnitts 18b des Bundelements 18;

b1:

Dicke (Erstreckung radialer Richtung) des axialen Abschnitts 20a des Bundelements 20;

b2:

Dicke (Erstreckung radialer Richtung) des axialen Abschnitts 22c des Bundelements 22;

b3:

Dicke (Erstreckung radialer Richtung) des axialen Abschnitts 18a des Bundelements 18;

h1:

radiale Erstreckung des radialen Abschnitts 20b des Bundelements 20 ausgehend von dem axialen Abschnitt 20a;

h2:

radiale Erstreckung der radialen Abschnitte 22a und 22b des Bundelements 22 ausgehend vom axialen Abschnitt 22c;

h3:

radiale Erstreckung des radialen Abschnitts 18b des Bundelements 18 ausgehend von dem axialen Abschnitt 18a;

I1:

axiale Erstreckung des Fadenpakets 26;

I2:

axiale Erstreckung des Fadenpakets 28;

I3:

axiale Erstreckung des Fadenpakets 24;

d1:

Außendurchmesser der Buchse 14;

d2:

Außendurchmesser der radialen Abschnitte 22a und 22b des Bundelements 22;

d3:

Innendurchmesser der Buchse 14;

d4:

Außendurchmesser der radialen Abschnitte 18b und 20b der Bundelemente 18 und 20;

LK:

Durchmesser des Kreises, auf dem die Mittelachsen M_B der Buchsen 14 liegen, wobei der Durchmesser dieses Kreises dem Verbindungsdurchmesser des elastischen Gelenkkörpers 10 angibt; und

R1, R2, R3, R4

vorbestimmte Radien der der Übergänge zwischen den axialen Abschnitten 18a, 20a und 22c in die radialen Abschnitte 18b, 20b, 22a und 22b der Bundelemente 18, 20, 22.

The entered dimensions refer to the individual elements of the elastic joint body 10 as follows:

a1:

Thickness (extension in the direction of the central axis M _B of the bushing 14) of the radial section 20b of the collar element 20;

a2:

Thickness (extension in the direction of the central axis M _B of the bushing 14) of the radial section 22b of the collar element 22;

a3:

Thickness (extension in the direction of the central axis M _B of the bushing 14) of the radial section 22a of the collar element 22;

a4:

Thickness (extension in the direction of the central axis M _B of the bushing 14) of the radial section 18b of the collar element 18;

b1:

thickness (radial direction extension) of the axial portion 20a of the collar member 20;

b2:

thickness (radial direction extension) of axial portion 22c of collar member 22;

b3:

thickness (radial direction extension) of the axial portion 18a of the collar member 18;

h1:

radial extent of the radial section 20b of the collar element 20 starting from the axial section 20a;

h2:

radial extension of the radial sections 22a and 22b of the collar element 22 starting from the axial section 22c;

h3:

radial extension of the radial section 18b of the collar element 18 starting from the axial section 18a;

I1:

axial extension of the thread package 26;

I2:

axial extension of the thread package 28;

I3:

axial extension of the thread package 24;

d1:

outer diameter of bushing 14;

d2:

Outer diameters of radial portions 22a and 22b of collar member 22;

d3:

inner diameter of bushing 14;

d4:

outside diameters of radial portions 18b and 20b of collar members 18 and 20;

LK:

diameter of the circle on which lie the central axes M _B of the bushings 14, the diameter of this circle indicating the connection diameter of the elastic articulated body 10; and

R1, R2, R3, R4

predetermined radii of the transitions between the axial sections 18a, 20a and 22c into the radial sections 18b, 20b, 22a and 22b of the collar elements 18, 20, 22.

The above-described ratios of the joint body can be specified on the basis of these dimensions.

The ratio u ₁ can thus be determined from $${\text{and}}_{\text{1}}=\frac{{\text{l}}_{\text{1}}+{\text{l}}_{\text{2}}{\text{+l}}_3}{\text{LK}}$$

The sum of the axial extent I _{1 ,} I ₂ , I ₃ can be 22 mm, for example. The connection diameter LK can be 110 mm, for example. A value of 0.2 then results for the ratio u ₁ .

The ratio u ₂ can be determined from: $${\mathrm{and}}_2=\frac{l_1+l_2+l_3}{{\mathrm{i.e}}_2}$$

The outer diameter d ₂ of the radial sections 22a and 22b of the collar element 22 is preferably used for the ratio u ₂ . The outer diameter d ₂ of the radial sections 22a and 22b can be 30 mm, for example. A value of 0.7 can result for the ratio u ₂ .

The ratio u ₃ results from: $${\mathrm{and}}_3=\frac{l_1+l_2+l_3+a_1+a_2+a_3+a_4}{{\mathrm{i.e}}_2}$$

The outer diameter d ₂ of the radial sections 22a and 22b of the axial inner collar element 22 is also used for the ratio u ₃ . For the axial extension of the bundle of threads 24, 26, 28 the exemplary value of 22 mm is used again. The thickness of the radial sections 18b, 20b, 22a and 22b can be assumed to be 1 mm. Again assumed to be 30 mm as the outer diameter d ₂ . A value of 0.87 then results for the ratio u ₃ from these values.

The ratio u ₄ can be determined from: $${\mathrm{and}}_4=\frac{l_1+l_2+l_3+a_1+a_2+a_3+a_4}{LK},$$

A value of 0.24 results for the ratio u ₄ from the values presented above.

The ratio u ₅ can be determined from: $${\mathrm{and}}_5=\frac{l_2}{{\mathrm{i.e}}_2}$$

A value of 12 mm can be assumed for the axial extension I ₂ of the thread bundle 28 . With an outer diameter d ₂ of the radial sections 22a and 22b of the collar element 22 of 30 mm, a value of 0.4 can result for the ratio u ₅ .

The ratio u ₆ can be determined from: $${\mathrm{and}}_6=\frac{l_1}{l_2}$$

In other words, according to the invention, the elastic joint body 10 can have a predetermined ratio between the axial extension I ₂ of the thread bundle 28 in the pulling section and the axial extension I ₁ of a thread bundle 24 or 26 in the pushing section. A value of 5 mm can be assumed for the axial extent I ₁ of a thread bundle 24 or 26 in the push section and a value of 12 mm can be assumed for the axial extent I ₂ of the thread bundle 28 in the pull section. A value of 0.42 results for the ratio u ₆ .

b1 gibt die Dicke (Erstreckung in radialer Richtung) des axialen Abschnitts 20a Bundelements 20 an. h1 gibt die radiale Erstreckung des radialen Abschnitts 20b des Bundelements 20 ausgehend von dem axialen Abschnitt 20a an. Für b1 kann 1 mm und für h1 kann 5mm angenommen werden. Für die axiale Erstreckung I₁ des Fadenpakets 26 wird wieder 5 mm angenommen. Somit ergibt sich für das Verhältnis u₇ ein Wert von 1,2.The ratio u ₇ results from the following equation: $${\text{and}}_7=\frac{{\text{H}}_1+{\text{b}}_1}{{\text{l}}_1}$$

b1 indicates the thickness (extension in the radial direction) of the axial section 20a of the collar element 20 . h1 specifies the radial extent of the radial section 20b of the collar element 20, starting from the axial section 20a. 1mm can be assumed for b1 and 5mm for h1. 5 mm is again assumed for the axial extension I ₁ of the thread bundle 26 . This results in a value of 1.2 for the ratio u ₇ .

Furthermore, the outside diameter d ₂ of the radial sections 22a and 22b can be larger than the outside diameter d ₄ of one of the radial sections 18b and 20b of one of the collar elements 18 and 20 . Accordingly, d ₂ >d ₄ can apply.

The ratios or equations discussed above can be adapted to the embodiments described below, the ratios u ₁ to u ₇ also resulting in the embodiments described below being within the ranges specified above.

4 12 shows a plan view of an elastic joint body 110 according to a second embodiment of the invention.

The joint body 110 has an elastic body 12 and bushings 14 . Collar elements 18 are provided on the sockets 14 . The sockets 14 have a head 16 at one of their ends.

5 shows a sectional view along the section line VV in 4 .

The elastic joint body 110 has two collar elements 18 and 20 . The collar elements 18 and 20 have radial sections 18a, 18b, 20a, 20b and axial sections 18c and 20c, 18d and 20d. The axial sections 18c and 20c extend with the section 18d and 20d beyond the axially outer radial section 18b and 20b in the axial direction. Sections 18d and 20d point towards the axial ends of bushings 14. Sections 18d and 20d thus extend between the bushing end and the axially outer radial section 18b and 20b. The radial sections 18a, 18b and 20a, 20b together with the axial sections 18c and 20c form a U-shaped area of the collar elements 18 and 20 in which the thread bundles 18 and 20 are accommodated. The bundle of threads 28 is guided in the drawing section between the axially inner radial sections 18a and 20a. In this embodiment, therefore, no additional axially inner collar element is provided.

6 12 shows a plan view of an elastic joint body 210 according to a third embodiment of the invention.

The top view of the elastic joint body 210 corresponds to the top view of the elastic joint body 110, which has already been described in detail above.

The main difference between the in the 4 and 5 shown embodiment and the embodiment according to FIG 6 and 7 lies in the arrangement of an additional axially inner collar element 22. The collar element 22 has a U-shaped cross section and accommodates the thread bundle 28. The axially outer collar members 18 and 20 correspond to those with reference to FIG 4 and 5 collar elements 18 and 20 described. The radial sections 22a and 22b of the axially inner collar element 22 rest against the radial sections 18a and 20a. The thread bundle 28 is thus separated from the thread bundle 24 via the radial sections 18a and 22a of the collar elements 18 , 20 and from the thread bundle 26 via the radial sections 20a and 22b of the collar elements 18 , 20 .

In the case of the elastic articulated body 110, the bundles of threads 24, 26, 28 can be wound directly into the U-shaped collar elements 18, 20 and 22 assigned to them. Following this, the collar elements 18, 20, 22 and the bundles of threads 24, 26, 28 wound into the collar elements 18, 20, 22 can be plugged or pressed onto the sockets 14.

8th 12 shows a plan view of an elastic joint body 310 according to a fourth embodiment of the invention.

The elastic joint body 310 has an elastic casing 12 or an elastic body 12 and bushings 14 . Collar elements are not recognizable on the surface of the elastic joint body 310.

9 shows a sectional view along the line IX-IX in 8th .

The elastic joint body 310 has two collar elements 18 and 20 which are U-shaped in cross section. The collar elements 18 and 20 each take a thread package 24, 26 on. The collar elements 18 and 20 guide the bundle of threads 28 in the drawing section between their radial sections 18a and 20a lying opposite one another. The thread package 28 thus extends axially within the radial sections 18a and 20a. There is therefore no separate axially inner collar element for guiding the thread bundle 28 .

The in the 10 and 11 shown fifth embodiment largely corresponds to that with reference to FIG 8th and 9 described embodiments. 10 shows a top view of the elastic joint body 410 and 11 shows a sectional view along the line XI-XI in 10 .

The only difference from the embodiment according to 8th and 9 is due to the axially inner collar element 22 . The axially inner collar element 22 has a U-shaped cross section and has already been described in detail above. According to this embodiment, three collar elements 18, 20, 22 each with two radial sections 18a, 18b, 20a, 20b, 22a, 22b are arranged. The radial sections 18a and 22a of the collar elements 18 and 22 abut one another. The same applies to the radial sections 20a and 22b, which also abut one another. The axial sections 18c, 20c and 22c of the collar elements 18, 20, 22 rest against the outer peripheral surface of the bushing 14.

12 12 shows a plan view of an elastic joint body 510 according to a sixth embodiment of the invention.

The elastic joint body 510 has an elastic body 12 in which bushings 14 are received.

13 shows a sectional view along the line XIII-XIII in 12 .

The elastic joint body 510 according to the sixth embodiment has five bundles of threads 24 , 26 , 28 , 30 , 32 . The thread bundles 24, 26, 28, 30, 32 have the same cross section, ie their extension is the same both in the radial direction and in the axial direction. The thread bundles 24, 26, 28, 30, 32 are accommodated in five U-shaped collar elements 18, 20, 22, 34, 36. For the sake of clarity, the individual radial and axial sections of the collar elements 20, 22, 34 and 36 in 13 not provided with reference numbers. Since the collar elements 18, 20, 22, 34, 36 all have essentially the same structure, only the collar element 18 is described as an example. The collar element 18 has two radial sections 18a and 18b which are connected to one another via an axial section 18c. The bundle of threads 24 is accommodated between the radial sections 18a and 18b. The cross section of the bundle of threads 24 is adapted to the distance between the radial sections 18a and 18b of the collar elements 18 so that the bundle of threads 24 can be completely accommodated in the collar element 18 .

The bundles of threads 24, 28, 32 are subjected to tensile loads when the elastic joint body 610 is in operation. The bundles of threads 26, 30, which are arranged between the bundles of threads 24, 28 and 30, are subjected to tensile loads when the elastic joint body is in overrun mode.

The thread bundles 24, 26, 28, 30, 32 all have the same cross section. The bundles of threads 24, 26, 28, 30, 32 are separated from one another in the axial direction by two radial sections of the collar elements 18, 20, 22, 34, 36 in each case.

14 12 shows a plan view of an elastic joint body 610 according to a seventh embodiment of the invention.

The elastic joint body 610 has an elastic body 12 and bushings 14 which are accommodated in the elastic body 12 in a circumferentially offset manner.

15 shows a sectional view along the line XV-XV in 14 .

The elastic joint body 610 has three collar elements 18, 22, 36 in which the bundles of threads 24, 28 and 32 are accommodated. The collar elements 18, 22, 36 have an identical cross section. The collar elements 18, 22, 36 are U-shaped in cross section. The collar elements 18, 22, 36 thus each have two radial sections and an axial section connecting the two radial sections. This is confirmed by the sections 18a, 18b and 18c of the collar element 18 which are provided with reference numbers as an example. The collar element 18 has two radial sections 18a and 18b which are connected via an axial section 18c. The collar elements 22 and 36 are constructed or designed like the collar element 18 . The collar elements 18, 22, 36 rest with their axial section on the outer peripheral surface of the bushes 14.

The bundles of threads 26 and 30 are supported or guided axially by opposing radial sections of the collar elements 18, 22 and 36. The bundles of threads 26 and 30 are therefore not accommodated in a separate collar element. Sections of the thread bundles 26 and 30 are thus directly in contact with the outer peripheral surface of the bushings 14 .

16 12 shows a plan view of an elastic joint body 710 according to an eighth embodiment of the invention.

The elastic joint body 710 has bushings 14 accommodated in an elastic body 12 .

17 shows a sectional view along the line XVII-XVII in FIG 16 .

The elastic joint body 710 has four collar elements 18, 20, 34 and 36 which are U-shaped. The collar elements 18, 20, 34 and 36 each receive a bundle of threads 24, 26, 30 and 32 in their U-shape. A further bundle of threads 28 is provided between the collar elements 20 and 34 and has a larger cross section than the bundles of threads 24 , 26 , 30 and 32 . At least in sections, the thread bundle 28 rests directly on the outer peripheral surface of the bushings 14 . The bundle of threads 28 is guided by radial sections of the collar elements 20 and 34 lying opposite one another. The thread bundle 28 and the thread bundles 24 and 32 are arranged in a stretch of the elastic joint body 710 . The bundles of threads 26 and 30 are arranged in a sliding section of the elastic joint body 710

The collar elements 18, 20, 34 and 36 are identical to the U-shaped collar elements described above. The collar members 18, 20, 34 and 36 are of identical configuration, i.e. the radial portions and axial portions of each of the collar members 18, 20, 34 and 36 are identical in extent.

18 8 shows a plan view of an elastic joint body 810 according to a ninth embodiment of the invention.

The elastic joint body 810 is less round than the joint bodies described above. The basic shape of the elastic joint body 810 corresponds to a polygon.

The elastic joint body 810 includes an elastic body 12 and bushings 14 accommodated in the elastic body 12 . The sockets 14 are tubular

19 shows a sectional view along the line XIX-XIX in 18 .

The thread-reinforced joint body 810 has two collar elements 18 and 20 which are U-shaped. The elastic joint body 810 also has two bundles of threads 24 and 26 . The bundle of threads 24 is accommodated in the collar element 18 . The bundle of threads 26 is accommodated in the collar element 20 . The thread packet 24 is arranged in a tension section and thus has a larger cross section than the thread packet 26 arranged in a thrust section of the elastic joint body 10.

The collar elements 18 and 20 each have two radial sections 18a, 18b and 20a, 20b. The radial sections 18a, 18b and 20a, 20b are connected to one another via an axial section 18c and 20c. The axial section 18c of the collar element 18 is longer in the axial direction than the axial section 20c of the collar element 20. Since the thread bundle 24 has a larger cross-section, the collar element 18 assigned to this bundle of threads 24 must also be larger than the collar element 20 . However, the extent of the radial sections 18a, 18b and 20a, 20b of the two collar elements 18 and 20 is identical, so that the only difference in the axial extent is that of the axial sections 18c and 20c. The collar elements 18 and 20 are matched to the predetermined cross section of the thread bundles 24 and 26 in terms of their extension in the radial and axial direction.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102004029989 A1 [0002, 0003]
• DE 3734089 A1 [0002, 0004]

Claims (15)

Elastic joint body (10) for a shaft arrangement for the articulated connection of two shaft sections with - a plurality of bushings (14), the central axes (M _B ) of the bushings (14) being on a circle (K) around the central axis (M _G ) of the elastic articulated body (10), the diameter of this circle indicating the connection diameter (LK) of the elastic articulated body, - a plurality of bundles of threads (24, 26, 28) for coupling at least two bushings, each bundle of threads (24, 26, 28) having one has a predetermined axial extension, at least two bundles of threads (24, 26) being arranged in a pushing section of the elastic articulated body (10) and at least one bundle of threads (28) being arranged in a stretching section of the elastic joint body (10), - at least one support device for guiding the bundles of threads (24, 26, 28) comprising a plurality of collar elements (18, 20), said plurality of collar elements (18, 20) having at least two collar elements (18, 20) with at least two s I comprises sections extending in the radial direction, the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction each accommodating at least one bundle of threads (24, 26) arranged in a pushing path , wherein the at least one thread package (28) arranged in a pulling path is arranged in the axial direction of the bushes (14) between the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction and - at least one elastic casing (12) in which the bundles of threads (24, 26, 28) and the at least one support device are at least partially embedded, the ratio u ₁ being between the sum of the axial extent (I ₁ , I ₂ , I _n ) of the thread bundles (24, 26, 28) and the connection diameter (LK) 0.05≦u ₁ ≦0.35. Elastic joint body (10) according to claim 1 , wherein for the ratio u ₁ between the sum of the axial extent (I ₁ , I ₂ , I _n ) of the thread bundles (24, 26, 28) and the connection diameter (LK) 0.1≦u ₁ ≦0.3, preferably 0.12 ≤ u ₁ ≤ 0.28 applies. Elastic joint body (10) according to claim 1 or 2 , wherein the ratio u ₂ between the sum of the axial extent (I ₁ , I ₂ , I ₃ ) of the thread bundles (24, 26, 28) and the outside diameter (d) of at least one collar element is 0.3 ≤ u ₂ ≤ 1, preferably 0.4 ≤ u ₂ ≤ 0.9. Elastic joint body (10) according to one of Claims 1 until 3 , wherein the ratio u ₃ between the axial extent of the support device and the outer diameter (d) of a collar element (18, 20) is 0.6 ≤ u ₃ ≤ 1.2, preferably 0.8 ≤ u ₃ ≤ 1, the axial Extension of the support device of the sum of the axial extension (I ₁ , I ₂ , I ₃ ) of the thread bundles (24, 26, 28) and the thickness (a ₁ , a ₂ , a ₃ , a _n ) of the radial sections of the collar elements ( 18, 20). Elastic joint body (10) according to one of Claims 1 until 4 , wherein the ratio u ₄ between the axial extent of the support device and the connection diameter (LK) is 0.1 ≤ u ₄ ≤ 0.45, preferably 0.15 ≤ u ₄ ≤ 0.4, the axial extent of the support device being the sum from the axial extent (I ₁ , I ₂ , I _n ) of the thread bundles (24, 26, 28) and the thickness (a ₁ , a ₂ , a ₃ , a _n ) of the radial sections of the collar elements (18, 20). . Elastic joint body (10) according to one of Claims 1 until 5 , where the ratio u ₅ between the axial extent (I ₂ ) of a thread bundle (24, 26, 28) in the drawing section and the outer diameter (d ₂ ) of a collar element assigned to this thread bundle (24, 26, 28) is 0.2 ≤ u ₅ ≤ 0.6, preferably 0.25 ≤ µ ₅ ≤ 0.5. Elastic joint body (10) for a shaft arrangement for the articulated connection of two shaft sections with - a plurality of bushings (14), the central axes (M _B ) of the bushings (14) being on a circle (K) around the central axis (M _G ) of the elastic articulated body (10), the diameter of this circle indicating the connection diameter (LK) of the elastic articulated body, - a plurality of bundles of threads (24, 26, 28) for coupling at least two bushings, each bundle of threads (24, 26, 28) having one has a predetermined axial extension, at least two bundles of threads (24, 26) being arranged in a pushing section of the elastic articulated body (10) and at least one bundle of threads (28) being arranged in a stretching section of the elastic joint body (10), - at least one support device for guiding the bundles of threads (24, 26, 28), which has a plurality of collar elements (18, 20), the plurality of collar elements (18, 20) having at least two collar elements (18, 20, 22) with at least between comprising sections extending in the radial direction, the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction each having at least one thread bundle (24, 26) arranged in a pushing section record, the at least one thread package (28) arranged in a pulling path in the axial direction of the bushings (14) between the at least two collar elements (18, 20) with at least two sections extending in the radial direction (18a, 18b, 20a, 20b) and - at least one elastic casing (12) in which at least the bundles of threads (24, 26, 28) and the at least one support device are at least partially embedded, the ratio u ₂ being between the sum of the axial extent (I ₁ , I ₂ , I ₃ ) of the thread bundles (24, 26, 28) and the outer diameter (d) of at least one collar element (18, 20, 22) 0.3 ≤ u ₂ ≤ 1, preferably 0.4 ≤ u ₂ ≤ 0.9. Elastic joint body (10) for a shaft arrangement for the articulated connection of two shaft sections with - a plurality of bushings (14), the central axes (M _B ) of the bushings (14) being on a circle (K) around the central axis (M _G ) of the elastic articulated body (10), the diameter of this circle indicating the connection diameter (LK) of the elastic articulated body, - a plurality of bundles of threads (24, 26, 28) for coupling at least two bushings, each bundle of threads (24, 26, 28) having one has a predetermined axial extension, at least two bundles of threads (24, 26) being arranged in a pushing section of the elastic articulated body (10) and at least one bundle of threads (28) being arranged in a stretching section of the elastic joint body (10), - at least one support device for guiding the bundles of threads (24, 26, 28) comprising a plurality of collar elements (18, 20), said plurality of collar elements (18, 20) having at least two collar elements (18, 20) with at least two s I comprises sections extending in the radial direction, the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction each accommodating at least one bundle of threads (24, 26) arranged in a pushing path , wherein the at least one thread package (28) arranged in a pulling path is arranged in the axial direction of the bushes (14) between the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction and - at least one elastic casing (12) in which the bundles of threads (24, 26, 28) and the at least one support device are at least partially embedded, the ratio u ₃ between the axial extension of the support device and the outer diameter of a collar element ( 18, 20) 0.6 ≤ u ₃ ≤ 1.2, preferably 0.8 ≤ u ₃ ≤ 1, the axial extension of the support device being the sum of the axial extension (I ₁ , I ₂ , I ₃ ) of the thread bundles (24, 26, 28) and the thickness (a ₁ , a ₂ , a ₃ , a _n ) of the radial sections of the collar elements (18, 20). Elastic joint body (10) for a shaft arrangement for the articulated connection of two shaft sections with - a plurality of bushings (14), the central axes (M _B ) of the bushings (14) being on a circle (K) around the central axis (M _G ) of the elastic articulated body (10), the diameter of this circle indicating the connection diameter (LK) of the elastic articulated body, - a plurality of bundles of threads (24, 26, 28) for coupling at least two bushings, each bundle of threads (24, 26, 28) having one has a predetermined axial extension, at least two bundles of threads (24, 26) being arranged in a pushing section of the elastic articulated body (10) and at least one bundle of threads (28) being arranged in a stretching section of the elastic joint body (10), - at least one support device for guiding the bundles of threads (24, 26, 28) having a plurality of collar elements (18, 20), said plurality of collar elements (18, 20, 22) having at least two collar elements (18, 20, 22) with at least s comprises two sections extending in the radial direction, wherein the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction each have at least one thread bundle (24, 26 ), whereby the at least one thread bundle (28) arranged in a pulling section is arranged in the axial direction of the bushes (14) between the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction ) is arranged, and - at least one elastic casing (12) in which the bundles of threads (24, 26, 28) and the at least one support device are at least partially embedded, the ratio u ₄ between the axial extension of the support device and the connection diameter ( LK) 0.1 ≤ u ₄ ≤ 0.45, preferably 0.15 ≤ u ₄ ≤ 0.4, the axial extent of the support device being the sum of the axial extent (I ₁ , I ₂ , I ₃ ) of the thread bundles (24, 26, 28) and the thickness (a ₁ , a ₂ , a ₃ , a ₄ ) of the radial sections of the collar elements (18, 20, 22). Elastic joint body (10) for a shaft arrangement for the articulated connection of two shaft sections with - a plurality of bushings (14), the central axes (M _B ) of the bushings (14) being on a circle (K) around the central axis (M _G ) of the elastic articulated body (10), the diameter of this circle indicating the connection diameter (LK) of the elastic articulated body, - a plurality of bundles of threads (24, 26, 28) for coupling at least two bushings, each bundle of threads (24, 26, 28) having one has a predetermined axial extent, with at least two bundles of threads (24, 26) in a pushing section of the elastic articulated body (10) and at least one bundle of threads (28) in a pulling section of the elastic - at least one support device for guiding the bundles of threads (24, 26, 28), which has a plurality of collar elements (18, 20), the plurality of collar elements (18, 20) having at least two collar elements ( 18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction, the at least two collar elements (18, 20) having at least two sections (18a, 18b, 20a, 20b) in each case receive at least one thread bundle (24, 26) arranged in a pushing section, the at least one thread packet (28) arranged in a pulling section being connected in the axial direction of the bushings (14) between the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction, and - at least one elastic casing (12) into which at least the bundles of threads (24, 26, 28) and the at least one support device, e.g u are at least partially embedded, the ratio u ₅ between the axial extent (I ₂ ) of a thread bundle (24, 26, 28) in the tension section and the outer diameter (d ₂ ) of a collar element ( 18, 20) 0.2 ≤ µ ₅ ≤ 0.6, preferably 0.25 ≤ µ ₅ ≤ 0.5. Elastic joint body (10) according to one of Claims 1 until 10 , wherein the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction between their opposing radial sections (18a, 20a) the at least one thread bundle (28) in the drawing section to lead. Elastic joint body (10) according to one of Claims 1 until 11 , wherein the two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction form axially outer collar elements (18, 20). Elastic joint body (10) according to one of Claims 1 until 12 , wherein the at least two collar elements (18, 20) with at least two sections (18a, 18b, 20a, 20b) extending in the radial direction each have an axial section (18c, 20c) which separates the two radial sections (18a, 18b, 20a, 20b) connects to each other. Elastic joint body (10) according to one of Claims 1 until 13 , wherein the ratio u ₆ between the axial extension of the at least one thread bundle (28) in the pulling section and the axial extension of the at least one thread bundle (24, 26) in the pushing section is 0.4 ≤ u ₆ ≤ 0.6, preferably 0, 5 is. Shaft arrangement with a thread-reinforced joint device (10) according to one of Claims 1 until 14 .

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