Elastic dog clutch

Abstract

The invention relates to a resilient claw clutch for transmitting a torque M acting about a rotational axis from a drive device to a driven device, having a first engagement element with first claw teeth and a first gap formed by the first claw teeth, and a second engagement element with second claw teeth and a second gap formed by the second claw teeth, the first claw teeth and the second claw teeth together being in a state of mutual engagement and delimiting an accommodation space, into which an elastic pressure body can be inserted such that the elastic pressure body elastically, torque-transmittingly force-couples the first engagement element with the second engagement element, several first claw teeth and several second claw teeth being designed such that several accommodation spaces are arranged in a circumferential direction R X successively in a radial direction R U and in a radial direction R R .

Description

TECHNICAL FIELD

[0001] The present application relates to a resilient claw clutch which can be rotated about a rotational axis A X for transmitting a torque M acting about the rotational axis from a drive device to a driven device, having a first engagement element with protruding first claw teeth distributed over a first circumference U1 and first gaps formed by the first claw teeth, and a second engagement element which can be rotated relative to the first engagement element, having protruding second claw teeth distributed over a second circumference U2 and second gaps formed by the second claw teeth, wherein the first and second claw teeth together are in a state of mutual engagement and delimit accommodation spaces into which resilient pressure bodies can be inserted such that the resilient pressure bodies elastically, torque-transmittingly force-couple the first engagement element with the second engagement element. BACKGROUND

[0002] Such claw clutches are known from the prior art. These claw clutches allow an elastic transmission of torque between the first and second engagement elements. Therein, the engagement elements can be fixed, for example, at a flywheel, a shaft, a flange or a similar element of the drive device or of the driven device. The fixing can be releasable, but also fixed. The pressure bodies are usually arranged without gaps between the engagement elements or their claw teeth, such that the pressure bodies react to a relative movement between the first and second engagement elements to press the pressure bodies supported in between and thus transmit torque in the event of a deformation of the pressure bodies. After the acting torque has been released, the relative distance between the first and second claw teeth is reset by the resilient restoring deformation of the pressure bodies. In such a design, the wear of the pressure bodies has proven to be disadvantageous, and in particular when using a claw clutch which is as resilient as possible. Designs which solve this problem usually result in a very complex and expensive clutch. SUMMARY

[0003] It is therefore an object of the present application to provide a resilient claw clutch which allows a high elastic coupling and in particular a high elastic torque transmission between a drive device and a driven device.

[0004] This object is achieved by a resilient claw clutch according to the present application.

[0005] In particular, this object is achieved by a resilient claw clutch which can be rotated about a rotational axis A X for transmitting a torque M acting about the rotational axis from a drive device to a driven device, having:

[0006] a first engagement element having protruding first teeth distributed over a first circumference and first gaps formed by the first teeth; and a second engagement element rotatably rotatable relative to the first engagement element, the second engagement element having protruding second teeth distributed over a second circumference and second gaps formed by the second teeth, wherein the first teeth and the second teeth together are in a state of mutual engagement and delimit accommodation spaces into which elastic pressure bodies can be inserted such that the elastic pressure bodies elastically, torque- transmittingly force couple the first engagement element with the second engagement element, wherein several first teeth and several second teeth are designed such that several accommodation spaces are arranged in a circumferential direction and in a radial direction with respect to the axis of rotation in succession.

[0007] The circumferences U1 and U2 mentioned here refer to regions which are essentially ring-shaped, which ring-shaped regions surround the axis of rotation A X and are designed at the first engagement element or at the second engagement element. The first teeth and the second teeth mentioned are designed within the respective ring-shaped regions. The teeth can have different geometrical shapes, as will also be defined in detail below. The teeth at least partially overlap in an observation direction which is coaxial to the axis of rotation.

[0008] As described, the respective first teeth and the respective second teeth form gaps. Such gaps arise, for example, when the teeth protrude from a base surface of the engagement element. The "state of mutual engagement" is understood such that the first teeth engage, among other things, into the gaps formed by the second teeth, and the second teeth engage into the gaps formed by the first teeth. Between the teeth thus in the state of engagement, in certain regions, pressure bodies are arranged.

[0009] The first engagement element can be supported rotatably relative to the second engagement element. Upon application of a torque M, a rotational force acts from the drive device on the first engagement element, which, in the case of compression of the pressure bodies supported in the accommodation spaces, moves the first teeth toward the second teeth and thus elastically transmits the torque to the engagement elements. It is also conceivable to have corresponding counter-movements with other pressure bodies and in particular with check bodies, which counter-movements are compressed in reverse, as will also be described below.

[0010] Preferably, in the unloaded state of the dog clutch, i.e. in particular in the absence of a torque M acting, the pressure body is in a gap-free coupling with the respective dog tooth. This results in that, upon application of a torque M, an immediate activation of the pressing of the pressure body by the relative movement between the first engagement body and the second engagement body, and thus by the relative movement between the first dog tooth and the second dog tooth, is effected. By definition, upon application of a torque, the first dog tooth and the second dog tooth or the regions in which the pressure body is in contact with these dog teeth move towards one another. Upon removal or release of the torque, the dog teeth optionally move away from one another again in these regions. For example, the first dog tooth moves towards the second dog tooth in front upon application of a torque M, while the first dog tooth moves away from the second dog tooth behind. Upon removal of the torque, this optionally occurs in reverse.

[0011] By the design according to the application with several accommodation spaces which are arranged both in the circumferential direction in a continuous sequence and in the radial direction in a continuous sequence in the circumferential region described above, a parallel connection of the pressure bodies, and thus in terms of this a parallel connection of the springs, is optionally produced in the circumferential direction. In the radial direction, in particular in combination with the parallel connection, a series connection of the pressure bodies or springs is produced. This combination results in a dog clutch which has a very precise and very soft reaction behavior. In particular, it is not necessary in such a design to use those pressure bodies which, due to their structure, make a very soft behavior of the dog clutch possible. Such soft pressure bodies exhibit a very high wear. In contrast, the dog clutch according to the application has a very high wear resistance and, in addition, a very high power loss. A dog clutch of the same specification with such a wear resistance, a fine reaction behavior and a high power loss is not known from the prior art.

[0012] The term "soft" here represents a characteristic which, in the dog clutch according to the application, enables the same deflection or movement of the first dog tooth relative to the second dog tooth to be achieved with a very low torque acting, compared to a dog clutch of the same specification and the same application range, for example from the prior art.

[0013] Optionally, the first engagement element and / or the second engagement element is embodied as a ring element which surrounds the rotation axis A X Optionally, the ring element has a base surface which surrounds the rotation axis in a ring shape. The rotation axis A X Here, the axis about which the clutch rotates is basically understood to be defined by the two engagement elements. In the presence of an axial misalignment and / or an angular misalignment, here a virtual common rotation axis A X is assumed, wherein the individual rotation axes of the engagement elements can deviate slightly from the virtual rotation axis A X in this case.

[0014] Optionally, the claws are designed to be integral with a base surface of the engagement elements. This applies to the first claws and / or to the second claws.

[0015] For example, such a base surface can be a ring, and in particular a ring with a securing device, in order to secure the respective engagement elements at the drive or at the driven device.

[0016] The engagement elements can be secured, for example, at a flywheel, a shaft, a flange or a similar element of the drive or of the driven device. They can have integral housings for this purpose, or they can be connected via suitable adapter elements. The securing can be releasable, but can also be fixed.

[0017] It is possible for several first claws and / or several second claws to protrude coaxially from the engagement elements in the direction of the axis of rotation A X The first claws and / or the second claws can thus protrude from at least one (bottom) plane of each engagement element, in particular in the axial direction, such that the mentioned gap is formed between the claws. In at least several first claws and / or several second claws, the protrusion can also be present in the radial direction. In principle, the first claws and / or the second claws protrude from the base surface of the engagement element or of the same engagement element such that they can enter into engagement together. The base surface can be any component which is suitable as a support for the claws and which is suitable for connection to the drive or to the driven device.

[0018] For several first claws and second claws, an alternating arrangement of the first claws and the second claws results. For example, in a view in the direction of the axis of rotation, the first claws and the second claws are arranged alternatingly in front of one another in the circumferential direction. It is also conceivable for the first claws and the second claws to be arranged in front of one another in the radial direction. It is furthermore possible for at least one first claw to be arranged serially and / or in parallel with respect to the circumferential direction, then for at least one second claw, and then again for at least one first claw. The same applies to the corresponding parts of the claws, and in particular to the optionally present wall elements of the claws, which are defined hereinafter.

[0019] It is conceivable for several first claws to protrude in the direction of the second engagement element and / or for several second claws to protrude in the direction of the first engagement element. If the first claws protrude in the direction of the second engagement element and the second claws protrude in the direction of the first engagement element, the respective claws can optionally engage into opposite gaps along an axis on which the respective claws protrude. This axis is optionally coaxial with the axis of rotation A X .

[0020] It is conceivable for several first claws and several second claws to define a radial direction R Rinner accommodation spaces and radially more outer accommodation spaces. The more inner accommodation spaces are optionally located on a circular path around the axis of rotation A X which is smaller than the more outer accommodation spaces.

[0021] It is conceivable that the number of more inner accommodation spaces corresponds to the number of more outer accommodation spaces. It is further conceivable that the more inner accommodation spaces are shorter in the circumferential direction than the more outer accommodation spaces. However, it is also conceivable that the respective accommodation spaces are designed to be identical and in particular geometrically identical. This optionally applies to the inner accommodation spaces with one another, the outer accommodation spaces with one another or the outer and inner accommodation spaces with one another. A different number of inner and outer accommodation spaces is also conceivable. Furthermore, a design of several accommodation spaces designed one after the other in the radial direction and thus a circular path formed by these accommodation spaces is also conceivable. Hereinafter, reference is also made to inner and outer accommodation spaces. Conceivable purely by way of principle is an arrangement of the accommodation spaces on a circular path around the axis of rotation. These accommodation spaces are optionally extended in the circumferential direction along a circular radius around the axis of rotation. They are optionally designed as circular arcs. However, it is also conceivable to design the accommodation spaces as tangents to these circular paths and in particular as straight lines. Furthermore, any other type of (relative to the circumferential direction) angularly running course is conceivable. The same applies to the course in the radial direction.

[0022] The accommodation spaces are optionally of a depth in the direction coaxial to the axis of rotation, which is defined by the respective protruding length of the claws in the direction of the axis of rotation and which is defined by the depth of the gap formed by the claws or the respective gap into which the claws engage the other claws. Optionally, the claws do not directly contact one another. The claws are optionally coupled only via pressure body forces. This can occur in the circumferential direction, in the direction coaxial to the axis of rotation and also in the radial direction.

[0023] It is conceivable that the claw clutch is divided into several circular sectors S, in particular identical circular sectors, which extend outward in the radial direction R X from the axis of rotation A R . It is further conceivable that the circular sectors S are in particular uniformly distributed on the circumference of the claw clutch. It is further conceivable that each circular sector S is designed with an inner accommodation space and an outer accommodation space. It is conceivable that the number of circular sectors is designed such that each two circular sectors are opposite one another relative to the axis of rotation.

[0024] It is conceivable that the claw clutch is designed such that the claws are arranged in a circular path around the axis of rotation A RThe upper side is delimited by at least two first claws or at least two second claws in several accommodation spaces. It is also conceivable that several accommodation spaces are delimited by at least one first claw and at least one second claw. The same applies if, as will be described in more detail below, the claws comprise wall elements.

[0025] The first claws and / or the second claws can have at least one wall element. These wall elements can optionally be partial elements of the claws, i.e. of the first claws and / or of the second claws. What is defined herein for the claws applies for the design and arrangement of the wall elements. Several wall elements can jointly form at least one claw. In particular, these wall elements can be connected to one another in one piece. However, they can also be designed such that they are merely adjacent to one another, such that they function as claws as defined herein. It is conceivable that several wall surfaces which extend in the circumferential direction extend in an arc-shaped manner and in particular in a circular-arc-shaped manner. It is conceivable that several first claws and / or several second claws are designed so tightly together or integrally with one another that a common first claw or second claw results. This also applies here. In addition to the direct adjacent arrangement of the first claws and / or of the second claws for forming the accommodation spaces, it is also conceivable that the first claws and the second claws or, as just described, the wall elements of the first claws and of the second claws are arranged so as to be adjacent to one another, such that they delimit at least one accommodation space.

[0026] It is conceivable that several accommodation spaces are delimited in the circumferential direction by the first claws and by the second claws. The accommodation spaces can optionally be designed such that they can change their geometry by the application or removal of a torque. Via such a change in geometry, for example a change in length, depth and / or width, the pressure bodies are optionally pressed and thus elastically force-coupled.

[0027] It is conceivable that several accommodation spaces are designed so as to be delimited in the circumferential direction R U The accommodation pockets which the pressure bodies inserted here protrude from, are compressed between the first claws and the second claws and in particular pressed into the accommodation pockets when the torque M acts. The accommodation pockets can be formed, for example, by the first claws or by wall elements thereof and / or by the second claws and in particular by wall elements thereof. It is also conceivable that the pressure bodies and the accommodation pockets are arranged and designed such that they are bent around the axis, in particular orthogonal to the axis of rotation, and further in particular in the radial direction. The bending can take place such that the longitudinal axis of the pressure bodies approximates a circular arc or exhibits such a circular arc.

[0028] It is conceivable that several accommodation spaces are delimited in the circumferential direction R U extend further in the radial direction RR It is particularly in this regard conceivable that several pressure bodies extend in the circumferential direction R U longer than in the radial direction R R longer than in the radial direction R

[0029] Optionally, in several accommodation spaces, at least one pressure body is arranged for each accommodation space, and particularly exactly one pressure body is arranged for each accommodation space.

[0030] As already set forth, it is conceivable that several first claws and / or several second claws are designed as wall elements or have wall elements which extend in the radial direction R R and / or in the circumferential direction R U It is also possible to design wall elements in directions which deviate from the aforementioned directions, and particularly to design wall elements which are connected to wall elements which extend in the radial direction R R and / or in the circumferential direction R U It is also conceivable that wall elements which extend in the radial direction R R are connected to wall elements which extend in the circumferential direction R U Here, particularly a one-piece design of the wall elements is conceivable.

[0031] It is conceivable that several first claws and / or second claws have wall faces which delimit the accommodation spaces and which extend in a plane which is coaxial to the axis of rotation A X The planes which are coaxial to the axis of rotation are planes which comprise an axis which is axially parallel to the axis of rotation. The wall faces can be portions of the wall elements. Optionally, in at least one wall element or at least one claw, the wall faces are designed parallel to one another. This is possible, for example, in wall elements which extend in the longitudinal direction, in wall faces which are designed on the left side and on the right side. It is conceivable that the wall elements or claws protrude from the engagement element with flat wall faces, particularly with coplanar, oppositely arranged wall faces. It is also conceivable that the claws or wall elements are designed such that they are designed wider or narrower in the direction of the engagement element from which they protrude. The wall elements or wall faces are preferably planar. It is also conceivable that recesses, curves or similar concave or convex portions are implemented in the wall faces. This is the case, for example, with the guide elements which will also be described hereinafter. It is conceivable that several first claws and / or several second claws have wall faces which extend in a plane which extends in the radial direction or in the circumferential direction, particularly which curves in the circumferential direction.

[0032] It is conceivable that in the several first claw teeth wall surfaces are provided which are designed as first pressure body support surfaces and in the several second claw teeth wall surfaces are provided which are designed as second pressure body support surfaces and these wall surfaces are so aligned with respect to one another that they move towards one another when the torque M to be transmitted is applied in order to compress the pressure bodies which are force-coupled between the pressure body support surfaces. The pressure bodies are optionally arranged releasably at the pressure body support surfaces and they are in particular in gapless contact with these pressure body support surfaces. Optionally, the pressure bodies are so designed that they pre-tension the first and second engagement elements with respect to one another and in particular with respect to the non-return body, so that there is substantially no gap between the first and second claw teeth.

[0033] It is conceivable that in the several first claw teeth wall surfaces are provided which are designed as first pressure body guide surfaces and in the several second claw teeth wall surfaces are provided which are designed as second pressure body guide surfaces and these wall surfaces are so aligned with respect to one another that they move in the circumferential direction R U above with respect to one another. Therein, optionally, the oppositely arranged wall surfaces slide with respect to one another on circular paths which have a common midpoint, namely the axis of rotation. It is also conceivable that the pressure body guide surfaces are so designed that the pressure bodies move with respect to these pressure body guide surfaces or slide along these pressure body guide surfaces in partial regions when the torque is applied.

[0034] When the pressure bodies are compressed, the pressure bodies optionally slide along at least one of the wall surfaces. In particular, when the accommodation spaces are designed as pockets, the pressure bodies are pressed into the respective pockets along the wall surfaces.

[0035] Since the extrusion takes place in the circumferential direction, it is conceivable that the pressure bodies are so designed that in the avoidance movement they are pressed radially towards the pressure body guide surfaces. The same is conceivable by the occurrence and action of centrifugal forces on the pressure bodies, wherein the pressure bodies are pressed to the pressure body guide surfaces which are arranged on the outside.

[0036] It is conceivable that several accommodation spaces are delimited by the wall surfaces of the first claw teeth and / or the wall surfaces of the second claw teeth which complement one another and in particular so that the wall surfaces point inwards in the radial direction and in correspondence therewith the accommodation spaces are delimited in the radial direction R RThe upper ones point outwardly opposite. In particular in this regard, but also generally, it is conceivable that the accommodation space is designed in such a way that the movement of the pressure bodies can take place in a direction which is essentially orthogonal to the centrifugal force acting on the pressure bodies when a torque M acts on the dog clutch. The compression of the pressure bodies can optionally take place on a circular path around the axis of rotation. By the action of the centrifugal force, the compression is furthermore carried out in the radial direction, albeit to a lesser extent than in the circumferential direction.

[0037] It is particularly conceivable that the pressure bodies are arranged in the accommodation space in such a way that they are pressed by the acting centrifugal force to the inwardly pointing outer wall surface of the accommodation space or of the respective dog tooth. In principle, as will also be described in more detail below, it is conceivable that the support or accommodation of the pressure bodies is designed in such a way that they are compressed in the circumferential direction and / or deformed into a curved and in particular into a circular-arc shape when the centrifugal force acts, and in particular are deformed in such a way that in the deformed state they have a circular-arc or similar curved shape in the circumferential direction, which can also deviate slightly from the circular-arc shape and can have a tangent angle of up to 5° from the circular-arc shape.

[0038] It is conceivable that several pressure bodies are designed curved or similarly tapered at the front and / or rear end face in the circumferential direction R U in such a way that the end face is supported along an axis or point which is coaxial with the axis of rotation A X .

[0039] It is conceivable that the pressure bodies are designed in such a way that they are subjected to a normal force by the respective pressure body support surface in an ideal manner without the introduction of a bending moment, in particular by compression caused by the pressure body support surface. Optionally, the support forces introduced by the pressure body support surface into the pressure bodies extend in alignment in the circumferential direction R U . Optionally, these support forces are orthogonal to the radially arranged pressure body support surfaces of the first dog tooth and / or of the second dog tooth.

[0040] It is conceivable that several first dog teeth and / or several second dog teeth have guide elements via which the pressure bodies are supported in the accommodation space along an axis which is coaxial with the axis of rotation A X , wherein optionally several guide elements extend coaxially with the axis of rotation. For example, these guide elements can protrude from the wall surface and in particular from the pressure body support surface of the first dog tooth and / or of the second dog tooth. Optionally, it is conceivable that the guide elements are designed to extend along an axis which is coaxial with the axis of rotation A X . It is also conceivable that the guide elements are designed at wall surfaces which extend in the circumferential direction R U .

[0041] For example, the guide elements can be designed as protrusions. One or several guide elements can be arranged at the wall surface. Alternatively, the guide elements are parallel to each other. Furthermore, the guide elements are alternatively arranged on a common circumferential path, and in particular on a circumferential path into which the pressure body is pressed when a centrifugal force, for example by an applied torque, acts on the pressure body, when viewed in the circumferential direction. It is also conceivable to design the guide elements as point supports.

[0042] The guide elements are alternatively designed such that ventilation channels are formed between the pressure body and the adjacent area, which ventilation channels in particular allow cooling of the pressure body. In particular in this regard, the guide elements are alternatively arranged spaced apart from each other, so that a gap is formed between them. Such a gap can form a ventilation channel in combination with the pressure body and the adjacent wall surface. Furthermore, the guide elements are alternatively designed such that they provide a sliding support for the pressure body, in order to thus allow unconstrained compression of the pressure body. In particular in this regard, the guide elements are alternatively formed orthogonal to the axis, along which the pressure body is compressed when a torque is applied.

[0043] It is conceivable that several wall surfaces extending in the circumferential direction extend in an arcuate manner and in particular in a circular arcuate manner.

[0044] It is conceivable that a greater number of guide elements are designed at several radially inwardly directed wall surfaces of the accommodation space than at the corresponding radially outwardly directed wall surfaces of the same accommodation space. In particular, it is conceivable that n guide elements are designed at several radially inwardly directed wall surfaces of the accommodation space and that n-x guide elements are designed at the corresponding radially outwardly directed wall surfaces of the accommodation space, wherein n is an integer > 0, x is an odd number > 0, n > 2 and x < n. It is conceivable that fewer guide elements are designed at the inwardly directed inner wall surfaces than at the inwardly directed outer wall surfaces of the same accommodation space. Alternatively, the number of guide elements of the inwardly directed inner wall surfaces is at least one less than the number of the inwardly directed outer wall surfaces of the same accommodation space.

[0045] The corresponding implementation of the guide elements at the outer wall surfaces and the inner wall surfaces allows a circular arcuate deformation of the pressure element, in particular when a torque is applied at the pressure body and / or a centrifugal force is generated. Such an implementation can also be provided by other elements. The implementation is alternatively provided in a dog clutch according to the invention.

[0046] It is conceivable that, particularly when torque and / or centrifugal force are applied to the pressure body, the guide element is pressed into a portion of the pressure element. It is also conceivable that the pressure body is pressed into the gap between the guide elements. It is conceivable that, as this pressing is performed, the stronger the circumferential compression of the pressure body and / or the stronger the guide element is pressed into the pressure body or the stronger the pressure body is pressed into the gap, the resistance to the circumferential compression and / or movement of the pressure body or pressure body components (e.g., in the case of compression) gradually increases.

[0047] It is conceivable that, in a state where these pressure bodies are inserted into the receiving space and are neither bearing pressure exerted by the claws nor bearing pressure exerted by the claws, several pressure bodies in the circumferential direction R... U The upper shape is slender, especially oval, bean-shaped, or similarly slender and rounded.

[0048] It is conceivable that, relative to the circumferential direction R U Several pressure bodies arranged radially inward in the containment space are in the circumferential direction R U The upper part is shorter than the several pressure bodies arranged in the radially outer receiving space. In particular, this implementation is advantageous when combined with the circular sector described above. As explained, the circular sector can be defined, for example, by the end face of the pressure body and the midpoint of the sector as the axis of rotation.

[0049] Imagine that the first and second claws have anti-rebound support surfaces aligned with each other such that the anti-rebound support surfaces apply a anti-rebound torque M that reacts with the torque M to be transmitted. R The dampers move towards each other to compress the dampers coupled by the forces between the check bearing surfaces. Such dampers can be designed to resemble pressure bodies, particularly in terms of their material. Preferably, the Shore hardness of the damper is higher than that of the pressure body.

[0050] Optionally, the Shore hardness of each pressure body is the same. However, it is also possible to design different Shore hardnesses, particularly for the inner and outer pressure bodies. For example, the outer pressure body can be made harder than the inner pressure body. The different hardnesses can optionally be designed to be uniformly distributed along the circumference. This means that the pressure bodies can have the same hardness across the circumference radius.

[0051] Further embodiments of the present invention are derived from various embodiments. Attached Figure Description

[0052] The invention will now be described with reference to embodiments, which are illustrated in more detail with reference to the accompanying drawings. Wherein:

[0053] Figure 1a schematic representation of a first embodiment of a resilient dog clutch in combination with a driving device and a driven device is shown;

[0054] Figure 2 a perspective view according to Figure 1 an embodiment of the application is shown;

[0055] Figures 3-4 a perspective view according to Figure 2 an embodiment of the application is shown;

[0056] Figure 5 a perspective view according to Figure 2 an embodiment of the application is shown;

[0057] Figure 6 a perspective view according to Figure 2 an embodiment of the application is shown; Figure 5

[0058] Figure 7 and Figure 8 a detail view according to Figure 2 an embodiment of the application is shown;

[0059] Figure 9 a perspective view of a further embodiment of a dog clutch is shown;

[0060] Figure 10 a detail view according to Figure 9 an embodiment of the application is shown;

[0061] Figure 11 a perspective view according to Figure 9 an embodiment of the application is shown;

[0062] Figure 12 a perspective view according to Figure 9 an embodiment of the application is shown; and Figure 11

[0063] Figure 13 a perspective view according to Figure 9 an embodiment of the application is shown; Figure 11

[0064] a detail view of different deflection states of an embodiment of a dog clutch is shown; and Figures 14-17

[0065] a perspective view of a further embodiment of a dog clutch is shown; Figure 18

[0066] a perspective view of a further embodiment of a dog clutch is shown;​​Figure 19 Showing according to Figure 18 A partial cross-sectional top view along the rotation axis AX of the embodiment; and

[0067] Figure 20 Showing according to Figure 18 The implementation method in Figure 20 The partial cross-section in the cutting method depicted in the text.

[0068] In the following text, the same reference numerals are used to compare and serve the same purpose for components, and superscripts are sometimes used. Detailed Implementation

[0069] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning, and in particular, the meaning commonly understood by those skilled in the art when interpreted in conjunction with the description and accompanying drawings. Furthermore, it should be understood that those terms defined in common dictionaries are interpreted in the technical field relevant to this invention, and not in an idealized or overly formal sense, unless explicitly defined as such. In some cases, detailed descriptions of well-known apparatuses and methods may be omitted to avoid redundancy. The description of certain embodiments and the terminology used therein should not be construed as limiting the invention. The singular forms “a” and “the” may also include plural forms unless clearly apparent from the context. The term “and / or” includes any and all combinations of one or more of the associated listed objects. It should be understood that the term “comprising” means that the mentioned feature is present, but does not exclude the presence or addition of one or more other features. Additionally, it should be understood that if a particular step of a method is indicated to occur after another step, that particular step may occur directly after that other step, or one or more intermediate steps may be performed before that particular step, unless otherwise stated. It should also be understood that when describing connections between structures or components, such connections may be made directly or via intermediate structures or components, unless otherwise specified. The disclosures of all publications, patent applications, patents, and other documents set forth herein are absolute. In the event of conflict, this specification, including its definitions, shall prevail.

[0070] The invention is described herein with reference to the accompanying drawings, in which embodiments of the invention are illustrated. However, the invention may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, embodiments are indicated herein to make this disclosure detailed and complete, and to set forth the scope of the invention to those skilled in the art in a complete but exemplary manner. The description of exemplary embodiments should be read in conjunction with the accompanying drawings, which should form part of the entire written description. In the drawings, absolute and relative dimensions of systems, components, layers, and regions may be exaggerated for clarity. Embodiments may be described with reference to schematic and / or cross-sectional views of the invention, idealized embodiments, and intermediate structures. Relative terms and their derivatives should be understood as being based on orientation as described or shown in the drawings under discussion. These relative terms are for clarity and do not require the system to be constructed or operated in a particular orientation unless explicitly stated otherwise. Any disclosed device or part thereof may be combined or divided into other parts unless specifically stated otherwise. The fact that certain measures are mentioned in different paragraphs does not mean that these measures cannot be advantageously combined. In particular, all conceivable combinations of the invention are considered to be part of the invention itself. In this description, words such as “basically,” “about,” or “general” are interpreted as follows: these words include at least 10% or less of dimensional deviation, preferably 5% or less, or include deviations in shape, which are still within the scope of the relevant definitions for those skilled in the art, unless otherwise specified.

[0071] For clarity and in a strictly descriptive sense, features are generally described herein as part of one or separate embodiments; however, it should be understood that the scope of the invention may also include embodiments having combinations of all or some of the features described.

[0072] It should be noted that in the embodiments of the claw clutch, its engagement element and components described herein, all embodiments can be given as described above in the general section.

[0073] Figure 1 An embodiment of a resilient claw clutch 1 according to the invention is shown, the resilient claw clutch being used to transmit rotation about a rotational axis A depicted herein. X The torque M is transferred from the driving device 2 to the driven device 4. In this embodiment, the elastic claw clutch 1 is connected to the corresponding devices 2 and 4 via the driving shaft 3 or the driven shaft 5. As explained at the beginning, other connection types are of course conceivable.

[0074] As in Figures 2-8As described in detail, the claw clutch 1 has a first engagement element 10 and a second engagement element 20. At the engagement element 10, several first claws 12 are designed on a circumference U1, protruding from the engagement element 10. The protruding first claws 12 form a first gap 13. At the second engagement element 20, corresponding to the first engagement element 10, protruding second claws 22 are designed distributed on a second circumference U2, and a second gap 23 is formed by these second claws. The gap 13 of the first claws and the gap 23 of the second claws have a geometrically related overlapping space.

[0075] The first claw 12 and the second claw 22 are engaged together, forming receiving spaces 30, 32 into which elastic pressure bodies 40, 42 can be inserted, or these elastic pressure bodies can be inserted into these receiving spaces. The pressure bodies 40, 42 are arranged and designed such that they elastically and torque-transmittingly couple the first engaging element 10 to the second engaging element 20. This is feasible, among other things, because the first engaging element 10 can be rotatably supported relative to the second engaging element 20. When applied, for example... Figure 1 When the torque M is as described, the rotational force acts on the first engaging element 10 from the drive device 2. Under the compression of the pressure bodies 40, 42 supported in the receiving spaces 30, 32, the first engaging element moves the first claw 12 toward the second claw 22, and thus elastically transmits the torque to the engaging element 20. Optionally, when the torque M is stopped or removed, or when a check torque M occurs... R At this time, the return force is due to the elasticity of the pressure bodies 40 and 42, which causes the first and second claws 12 and 22 to move away from each other again. It should be clarified that when referring to the first and second claws, it may also refer to a portion of these claws.

[0076] According to the present invention, the first teeth 12 and the second teeth 22 are designed such that the accommodating spaces 30, 32 are positioned relative to the axis of rotation A. X Arranged sequentially in the circumferential direction R U and radial direction R R superior.

[0077] Among other things it is depicted that the first and second claws 12, 22 project so far out of the first and second engagement elements 10, 20 or out of the corresponding ring elements that they engage into opposite gaps 23, 13 of the other claw 20, 12 and thus form accommodation spaces 30, 32 into which pressure bodies 40, 42 can be inserted, so that the first and second engagement elements are force-coupled. In this embodiment the claws 12 of the one engagement element 10 project in the direction of the other, opposite engagement element 20 and vice versa. By the first and second claws or the corresponding gaps a toothing is formed which is gapped and allows the insertion of pressure bodies to reduce this gap and optionally to compensate for this gap. Due to the arrangement of the first and second claws the dog clutch also has an overload protection, for example in the event of a pressure body failure, since in this case the first and second claws come into direct contact and ensure torque transmission.

[0078] In the event of an active non-return torque M R (see Figure 1 ) a force coupling also optionally occurs and in particular a damping, since at the first and second claws 12, 22 optionally non-return support surfaces 60 are designed which between them can be arranged with a force-coupling so that in the event of a non-return torque and when the first and second claws move towards each other (in opposite directions) the damping body 62 assumes a damped force coupling.

[0079] As explained in Figures 2-8 , the dog clutch according to the invention has several accommodation spaces 30 which are more inner in the radial direction R R and in particular see Figure 5 ) and several accommodation spaces 32 which are more outer. Also particularly as depicted in Figure 5 , these accommodation spaces can be arranged in circular sectors S which extend outwards in the radial direction R X from the axis of rotation A R . In this embodiment the circular sectors S are optionally evenly distributed over the circumference of the dog clutch. Here for each circular sector S an inner accommodation space 30 and an outer accommodation space 32 are designed. Other arrangements and numbers of arrangements are also conceivable.

[0080] Also as depicted it is conceivable that several accommodation spaces 30, 32 extend in the circumferential direction R U further than in the radial direction R RThe outermost containment space is longer than the innermost containment space. It is also conceivable that the outermost containment space is longer than the innermost containment space. The same applies to the pressure bodies that can be arranged in these containment spaces. Here, for example, the outermost pressure body 42 is longer than the innermost pressure body 40. In principle, it is conceivable that the pressure body is longer in the circumferential direction R. U The upper part is in the radial direction R R The pressure bodies are longer. In particular, these pressure bodies have an elongated solid geometry, and especially a cuboid geometry with rounded end faces 44. These end faces can be designed to be curved or similarly tapered, such that these end faces are on the pressure body support surfaces 16, 26 of the first claw 12 and / or the second claw 22 (see... Figure 7 and Figure 8 (at point along the axis of rotation A) X (for example, see) Figure 3 The line support is coaxial. It is conceivable that when compressive force is applied between the first and second claws, this line support widens. This is caused by the deformation of the pressure body.

[0081] In this embodiment, several first claws 12 and / or several second claws 22 may optionally have wall elements 82-86 (see...). Figure 2 and Figure 8 These wall elements are in the radial direction R R Up and / or in the circumferential direction R U Extending upwards. These wall elements may optionally be interconnected. For example, as depicted here, angled wall element structures are formed, which interact with the corresponding claws of another engaging element to form a corresponding receiving pouch. It is conceivable that in the radial direction R... R Several receiving spaces are formed on the upper two sides by at least two first claws or claw wall elements. This is not depicted in this embodiment. More precisely, several receiving spaces 30 are defined here in the radial direction by at least one first claw and at least one second claw. It is also possible that in the radial direction R... R Several receiving spaces 32 are defined on the upper two sides by at least two first claws or at least two second claws. This is the case here. In detail, viewed in the radial direction, the wall elements of the second claws 22 form the receiving spaces 32.

[0082] Then, through the first and second claws in the circumferential direction R... U These containment spaces are formed sequentially, and these claws can move relative to each other in order to compress the pressure body arranged in the middle.

[0083] Especially in Figure 7As depicted in the middle, in several first claws 12 wall faces are optionally provided, and in particular front wall faces 15v, which are designed as first pressure body support faces 16. In several second claws, wall faces are optionally provided, and in particular rear wall faces 25n, which are designed as second pressure body support faces 26. The pressure body support faces 16, 26 are optionally aligned with one another such that they move towards one another when a torque M to be transmitted is applied, in order to compress the pressure bodies 40, 42 force-coupled between the pressure body support faces 16, 26.

[0084] It is also conceivable that in several first claws 12 wall faces are provided, and in particular outwardly pointing wall faces 15a, which are designed as first pressure body guide faces 18 (see also Figure 7 ). In several second claws 22 wall faces can also be provided, and in particular outwardly pointing wall faces 25a or inwardly pointing wall faces 25i, which are designed as second pressure body guide faces 28. The pressure body guide faces 18, 28 are optionally aligned with one another such that they move relative to one another in the circumferential direction R U in the event of an applied torque M to be transmitted. In this embodiment, the oppositely situated pressure body guide faces can move in the circumferential direction along a circular path.

[0085] In this embodiment, the several accommodation spaces 30, 32 are optionally also designed as accommodation pockets extending in the circumferential direction R U in which the inserted pressure bodies 40, 42 protrude in the circumferential direction R UG opposite the torque M to be transmitted, so that the pressure bodies are compressed between the first claws and the second claws when the torque M acts. This is depicted in detail in Figure 7 . The compression process is depicted in detail in Figures 14-17 .

[0086] As set out, in this embodiment the first claws comprise, inter alia, a wall element 83 extending radially outwards and a wall element 82 extending in the circumferential direction. Conversely, the second claws 22 have several wall elements 84, 86 extending in the circumferential direction and one wall element 85 extending in the radial direction.

[0087] It is also depicted in Figure 7 that several first claws 12 and / or several second claws 22 have wall faces 15, 25, which delimit an accommodation space and are optionally aligned with the axis of rotation A Xcoaxially. It is also conceivable that several first paw teeth and / or several second paw teeth have wall faces which delimit the accommodation spaces and which extend in a plane which extends in the radial direction or in the circumferential direction. In the embodiment depicted here, both cases are present. Here, the first paw teeth 12 have an outwardly directed wall face 15a and a front wall face 15v or a rear wall face 15n. In addition to this, the second paw teeth 22 have a front wall face 25v and a rear wall face 25n and an inwardly directed wall face 25i and an outwardly directed wall face 25a. The wall faces are optionally designed at the wall elements 82-85.

[0088] wherein the accommodation spaces are optionally delimited by the wall faces of the first paw teeth and / or the wall faces of the second paw teeth which complement one another. As already set out, the wall faces can be directed inwardly in the radial direction and, correspondingly, outwardly in the radial direction R R opposite one another.

[0089] In this embodiment, the accommodation spaces are delimited by the wall faces of the paw teeth, for example the more outward accommodation space 32 is delimited in the radial direction by the second paw teeth 22. In addition, there are accommodation spaces, here the more inward accommodation spaces 30, which are delimited in the radial direction by two correspondingly embodied wall elements of the paw teeth 12 and 22.

[0090] In this embodiment, several first paw teeth and / or several second paw teeth optionally have guide elements 50 via which the pressure bodies 40, 42 can be moved in the accommodation spaces 30, 32 along the direction of extension which is orthogonal to the rotational axis A X coaxially. Optionally, several guide elements 50 are designed as wire supports which are coaxial to the rotational axis A X coaxially. In this embodiment, the guide elements form wire supports on which the pressure bodies can be moved along the guide elements, in particular orthogonally to the direction of extension. In addition, ventilation channels 70 are formed by the guide elements. These ventilation channels allow reliable cooling of the dog clutch.

[0091] It is furthermore conceivable that, under the action of the centrifugal force F, as for example depicted in Figure 7 , the pressure bodies are bent such that they take up a circular path which runs substantially along the circumferential direction R U . In Figure 8 , a corresponding deformation of the radially outwardly and inwardly directed walls of the pressure bodies is depicted exemplarily.

[0092] It is also depicted that the guide elements are optionally designed at the wall faces 15a, 25a, 25i which extend in the circumferential direction R U or relative to the radial direction R Uinwardly or outwardly. It is also depicted that it is possible to design a greater number of guide elements at several radially inwardly directed wall faces 25i of the accommodation spaces 30, 32 than at the corresponding radially outwardly directed wall faces 15a, 25a of the accommodation spaces. This feature and the possible embodiment have already been described in detail in the introductory part.

[0093] Figures 9-13 A further embodiment of a dog clutch according to the application is shown, which corresponds essentially to the previously described embodiments in terms of its basic structure and mode of action. However, the first and second dog teeth are designed differently here. In detail, the second engagement element 20 has here second dog teeth 22, which each form two accommodation spaces for the pressure bodies 40, 42 with corresponding wall elements 82, 83, 84, 85 designed here. The accommodation spaces 32, 30 formed by the wall elements are delimited in the circumferential direction by the first dog teeth 22 or their wall elements 83.

[0094] Figures 14-17 The compression process of the pressure bodies 30, 32 or the relative deflection of the first engagement element 10 with respect to the second engagement element 20 is shown here, which is depicted for the embodiment of the dog clutch according to the application when a torque M is applied in Figure 1 corresponds to the embodiment depicted in Figure 2 . Figure 14 The beginning of the relative deflection is shown, further figures show an increase of this deflection. It can be seen how the first dog teeth 10 or their wall elements move towards the second dog teeth 20 or their wall elements and how the relative distance a is reduced in the case of a compression of the pressure bodies.

[0095] It can be seen that here, in particular when a torque is applied at the pressure bodies and / or a centrifugal force F is generated, the guide elements 50 are pressed into the partial areas of the pressure bodies. It can also be seen that the pressure bodies in the gap 52 are pressed between the guide elements. It is conceivable that the pressing in is carried out in such a way that the stronger the pressure bodies are compressed in the circumferential direction and / or the stronger the guide elements are pressed into the pressure bodies or the pressure bodies are pressed into the gap, the higher the resistance of the pressure bodies or pressure body parts to an extrusion and / or a movement in the circumferential direction R U .

[0096] Figures 18-20 A figure showing a further embodiment of a dog clutch is shown. This further embodiment can correspond essentially to the dog clutch according to Figure 2 or Figure 18The implementation method is as follows. It can be seen that, in order to reduce weight and improve thermal performance, particularly for cooling pressure bodies 30, 32, retraction portions and / or recesses can be provided in the first and / or second engaging elements. These retraction portions and / or recesses reduce the material thickness in the corresponding areas compared to the surrounding areas. In this implementation, for example, a retraction portion is provided in the bottom element of engaging elements 10, 20. Of course, a through-bridge and / or material reduction portion can also be designed in the corresponding area of ​​the claw clutch.

[0097] Icon labels:

[0098] 1. Claw clutch

[0099] 2. Drive unit

[0100] 3 drive shafts

[0101] 4 Driven device

[0102] 5 Driven Shaft

[0103] 10 First Connecting Element

[0104] 12 First Claw

[0105] 13 First gap

[0106] 15 wall

[0107] 15a Outward-pointing wall

[0108] 15V in front of the wall

[0109] The wall behind 15n

[0110] 16 Pressure body support surface

[0111] 17 Bottom Components

[0112] 18 Pressure body guide surface

[0113] 19 Retraction section

[0114] 20 Second coupling element

[0115] 22 Second Claw

[0116] 23 Second gap

[0117] 25 wall

[0118] 25a Outward-pointing wall surface

[0119] 25i Inward-pointing wall

[0120] 25V in front of the wall

[0121] 25 rear wall surface

[0122] 26 pressure body support surface

[0123] 27 bottom element

[0124] 28 pressure body guide surface

[0125] 29 retraction

[0126] 30 accommodation space

[0127] 32 accommodation space

[0128] 40 pressure body

[0129] 42 pressure body

[0130] 44 end surface

[0131] 50 guide element

[0132] 60 check valve support surface

[0133] 62 damper body

[0134] 64 accommodation

[0135] 70 guide channel

[0136] 82 wall element

[0137] 83 wall element

[0138] 84 wall element

[0139] 85 wall element

[0140] 86 wall element

[0141] AX rotation axis

[0142] M torque to be transmitted

[0143] MR return torque

[0144] RR radial direction

[0145] S circular sector

[0146] U1 first circumference

[0147] U2 second circumference

[0148] UR circumferential direction

Claims

1. A clutch (1) able to transmit a torque M about an axis of rotation A X a rotating elastic claw clutch (1) for transmitting a torque M acting about the axis of rotation A from a driving device (2) to a driven device (4), the elastic claw clutch having: a first engagement element (10) having protruding first claws (12) distributed over a first circumference U1 and first gaps (13) formed by the first claws; and a second engagement element (20) rotatably rotatable relative to the first engagement element, the second engagement element having protruding second tines (22) distributed over a second circumference U2 and second gaps (23) formed by the second tines, wherein the first claws (12) and the second claws (22) together are in a state of mutual engagement and delimit an accommodation space (30; 32) into which an elastic pressure body (40, 42) can be inserted such that the pressure body elastically torque-transmissively force-couples the first engagement element (10) with the second engagement element (20), wherein Several of the first claws (12) and several of the second claws (22) are designed such that several of the accommodation spaces (30; 32) are arranged in the circumferential direction R with respect to the rotation axis A X are arranged in the circumferential direction R U and in the radial direction R R , characterized in that Several of the first claws (12) and / or several of the second claws (22) have a guide element (50) via which the pressure body (40; 42) is guided in the accommodation space (30; 32) along the axis of rotation A X Coaxial axis line support, wherein several of the guide elements (50) protrude from a wall of the first claws (12) and / or the second claws (22).

2. The claw clutch according to claim 1, characterized in that several of the guide elements (50) protrude from pressure body support faces of the first claws (12) and / or of the second claws (22).

3. The claw clutch according to claim 1 or 2, characterized in that Several of said first claws (12) and several of said second claws (22) define a radial direction R R An upper, radially inner accommodation space (30) and a radially more outer accommodation space (32).

4. The claw clutch according to claim 1 or 2, characterized in that The dog clutch is divided into several circular sectors S, which are arranged around the rotation axis A X In the radial direction R R extend upwards and are distributed over the circumference of the dog clutch, wherein for each of the circular sectors S an inner accommodation space (30) and an outer accommodation space (32) are designed.

5. The claw clutch according to claim 4, characterized in that The dog clutch is divided into several identical circular sectors, which are arranged around the rotation axis A X In the radial direction R R extend upwards and are evenly distributed over the circumference of the dog clutch.

6. The claw clutch according to claim 1 or 2, characterized in that In the radial direction R R The upper sides define several of said accommodation spaces (30; 32) by at least two first claws or at least two second claws and / or by at least one first claw and at least one second claw.

7. The claw clutch according to claim 1 or 2, characterized in that Several of the accommodation spaces (30; 32) are in the circumferential direction R U extend above longer than in the radial direction R R .

8. The claw clutch according to claim 1 or 2, characterized in that Several of the first claws (12) and / or several of the second claws (22) are designed as wall elements which extend in the radial direction R R upward and / or in the circumferential direction R U upward.

9. The claw clutch according to claim 1 or 2, characterized in that Several of the first claws (12) and / or several of the second claws (22) have a wall surface (15a; 15v; 15n; 25a; 25i; 25v; 25n) which delimits the accommodation space (30; 32) and which extends in a plane which is coaxial with the rotation axis A X coaxial with the rotation axis A and / or several of the first claws (12) and / or of the second claws (22) have wall faces (15a; 15v; 15n; 25a; 25i; 25v; 25n) which delimit the accommodation space (30; 32) and which extend in a plane which extends in a radial direction or in a circumferential direction.

10. The claw clutch according to claim 1 or 2, characterized in that in several of the first claws (12) wall faces (15v) are provided which are designed as first pressure body support faces (16) and in several of the second claws (22) wall faces (25n) are provided which are designed as second pressure body support faces (26) and which are so aligned with respect to one another that they move towards one another when a torque M is to be transmitted in order to compress the pressure body (40; 42) which is force-coupled between the pressure body support faces (16; 26).

11. The claw clutch according to claim 1 or 2, characterized in that In several of the first claws (12) a wall (15a) is provided which is designed as a first pressure body guide surface (18) and in several of the second claws (22) a wall (25a; 25i) is provided which is designed as a second pressure body guide surface (28) and the walls are so aligned with respect to one another that the walls move in the circumferential direction R U away from one another when a torque M is applied which is to be transmitted.

12. The claw clutch according to claim 1 or 2, characterized in that Several of the accommodation spaces (30; 32) are delimited by the wall surface (15a) of the first claw tooth (12) and / or the wall surface (25a; 25i) of the second claw tooth (22) which complement one another, wherein the wall surfaces point inwards in the radial direction and, in correspondence therewith, the accommodation spaces (30; 32) are delimited in the radial direction R R The upper relative facing outwards.

13. The claw clutch according to claim 1 or 2, characterized in that Several of the pressure bodies (40; 42) are curved or similarly tapered at their front and / or rear end faces (44) in the circumferential direction R U such that they are supported along their axis of rotation A X coaxially to the axis of rotation A.

14. The claw clutch according to claim 1 or 2, characterized in that Several of the guide elements (50) extend coaxially with the rotation axis A X coaxially.

15. The claw clutch according to claim 1 or 2, characterized in that The guide element (50) extends along an axis which is coaxial with the rotation axis A X coaxial with the axis of extension.

16. The claw clutch according to claim 1 or 2, characterized in that The guide element (50) is designed at a wall face (15a; 25a; 25i) which extends in the circumferential direction R U upward.

17. The claw clutch according to claim 1 or 2, characterized in that At several radially inwardly directed wall faces (15a; 25i) of the accommodation space (30; 32) a greater number of guide elements (50) is designed than at the corresponding radially outwardly directed wall faces (25a) of the accommodation space (30; 32), and at several radially inwardly directed wall faces (15a; 25i) of the accommodation space n guide elements (50) are designed, and at the corresponding radially outwardly directed wall faces (25a) of the accommodation space (30; 32) n-x guide elements are designed, wherein n is an integer > 0, x is an odd number > 0, n > 2 and x < n.

18. The dog clutch of claim 1 or 2, characterized in that In a state in which the pressure bodies are inserted into the accommodation spaces (30; 32) and are not bearing the pressure acting via the claws (12; 22) and / or are bearing the pressure acting via the claws (12; 22), several of the pressure bodies (40; 42) are in the circumferential direction R U The upper shape is elongated.

19. The dog clutch of claim 18, characterized in that In a state in which the pressure bodies are inserted into the accommodation spaces (30; 32) and are not bearing the pressure acting via the claws (12; 22) and / or are bearing the pressure acting via the claws (12; 22), several of the pressure bodies (40; 42) are in a circumferential direction R U The upper shape is oval, bean-shaped or elongated rounded.

20. The dog clutch of claim 1 or 2, characterized in that with respect to the circumferential direction R U The pressure bodies (40) arranged in the radially inner accommodation space (30) are shorter in the circumferential direction R U than the pressure bodies (42) arranged in the radially outer accommodation space (42).

21. The dog clutch of claim 1 or 2, characterized in that Said first claw tooth (12) and said second claw tooth (22) have non-return support faces (60) so aligned with each other that, when a non-return torque M opposite to the torque M to be transmitted is applied R , they move towards each other to compress a damping body (62) force-coupled between said non-return support faces (60).

Images