Device for stabilizing body joints and / or for supporting items of sports equipment, comprising three elements which can be moved relative to one another

Abstract

The invention relates to a device (1) for stabilizing body joints and / or for supporting items of sports equipment, comprising a receiving area (20), said receiving area (20) being filled with a filling medium (30); a first element (40) for interacting with the filling medium (30), said first element being movably mounted in the receiving area (20); a force transmission element (50) for transmitting an external force to the first element (40); a second element (60) for interacting with the filling medium (30), said second element being movably mounted in the receiving area (20), wherein the second element can be elastically coupled to the first element (40) via a coupling element (70), the second element (60) and / or the first element (40) has at least one passage opening (64), through which the filling medium (30) can flow, and the first element (40) forms a valve body and the second element (60) forms a valve seat such that a flow of the filling medium (30) through the passage opening (64) can be permitted or inhibited on the basis of the valve position. The device additionally has a third element (80) for positioning the first element (40) and the second element (60) relative to each other, said third element (80) overlapping with the first element (40) at a first region (82) and with the second element (60) at a second region (84) in a relative movement direction VR of the first and second element.

Description

[0001] Device for stabilizing body joints and / or supporting sports equipment with three bodies that can be moved relative to each other

[0002] Technical area

[0003] The present invention relates to a device for stabilizing body joints and / or for supporting sports equipment.

[0004] State of the art

[0005] It is known to stabilize body joints, muscles, and tendons using devices that enable adaptive movement limitation. Furthermore, it is known to equip sports equipment that may be subjected to movement-related stresses with adaptive movement limitation devices.

[0006] Among other things, the adaptive behavior of such devices is achieved by two bodies moving relative to each other, with a filling medium between the bodies. One body of the device can form a receptacle filled with the filling medium. The other body can form an extension body which is movably arranged in the receptacle. The filling medium can flow in the area between the receptacle and the extension body when the two bodies move relative to each other. The flow velocity of the filling medium depends crucially on the cross-sectional area perpendicular to a relative direction of displacement of the receptacle and the extension body. This cross-sectional area available for the flow of the filling medium is also referred to as the hydraulic diameter and is ultimately decisive for the reactive behavior of the device when exposed to external forces.The choice of the hydraulic diameter determines the resistance the device offers to external forces. The devices can be fixed between two parts of a user's body or between two relatively movable elements of a piece of sports equipment. If physiological forces, i.e., forces that are not critical for the body part or component to be stabilized, are introduced into the device via the two parts of the user's body, the hydraulic diameter in the device allows for a corresponding relative movement of the holder and the extension body, thus allowing movement of the body part to be stabilized.

[0007] If, however, unphysiological forces, i.e. forces critical for the body part or component to be stabilized, are introduced into the device, a relative movement between the extension body and the holder is only possible with very high expenditure of force due to the hydraulic diameter.

[0008] EP 3 238 670 A1 and WO 2020 / 115227 A1 disclose devices for stabilizing body joints that enable adaptive behavior depending on the intensity of an acting force.

[0009] The devices each comprise a receptacle filled with a filling medium, a first body for interacting with the filling medium, wherein the first body is displaceably arranged in the receptacle, and a force transmission body for transmitting an external force to the first body. A second body for interacting with the filling medium is displaceably arranged in the receptacle, wherein the second body is elastically coupled to the first body via a coupling element. Furthermore, the second body has a passage opening through which the filling medium can flow. The passage opening in the second body provides a hydraulic diameter for the filling medium, through which the filling medium can flow as long as there is a distance between the first body and the second body.

[0010] The first body forms a valve body and the second body a valve seat, so that the flow of the medium through the passage opening can be permitted or prevented depending on the valve position.

[0011] External forces acting on the first body can be transmitted to the second body via the coupling element. Accordingly, the first body is capable of pushing and / or pulling the second body through the filling medium using the coupling element.

[0012] The coupling element is configured in such a way that when an external force acts on the first body, in the range of a physiological speed, it transmits a force to the second body so that the second body can be moved together with the first body through the filling medium.

[0013] If the force acting on the second body via the first body and the coupling element leads to critical relative displacement velocities in the device—i.e., unphysiological velocities—the coupling element yields, causing the first body to move toward the second body. This reduces the hydraulic diameter until the valve formed by the two bodies is closed.

[0014] If there is no longer enough hydraulic diameter available for the filling medium to flow through, the first and second bodies cannot move further through the filling medium. The device becomes blocked.

[0015] It has been shown that the motion control, in particular the reaction speed and the retention forces of the devices described above, are significantly influenced by the possible seal between the first and second bodies. Thus, the sealing surfaces between the first and second bodies are crucial. Inadequate sealing can lead to fluctuations in the reaction speed, which reduce the reproducibility of the operating principle. This can lead to undesired or even delayed blocking of the device. In addition, inadequate seals can result in leaks and pressure losses, which in turn result in insufficient retention force. Furthermore, in the extreme case of the sealing body slipping, the performance of the entire system can be manipulated.

[0016] A relatively unfavorable component design can lead to limited ease of joint movement, which manifests itself in the form of resistance perceptible to the user. This creates a trade-off between, on the one hand, the high demands placed on the components due to the high compressive forces acting on them, and, on the other hand, compact component dimensions for fast fluid dynamics, which enable a fast response time of the device.

[0017] Another challenge concerns the manufacturing of the devices described above. Designs that involve overlapping of the first and second bodies, in particular, complicate automation of production and represent a cost-increasing factor. 3D-printed components have been used for this purpose to date, but these can exhibit variations in quality and dimensions.

[0018] Furthermore, embodiments which provide for an overlap of the first and second bodies often require compromises in the geometric design of the first and second bodies. For example, due to assembly requirements, certain minimum distances may be necessary between the first body and the second body in the installed state, for example in order to insert the first body into a receiving area within the second body. Since the distance between the first body and the second body in the installed state, i.e. in the resting state of the device, is crucial for the reaction path of the device, comparatively large distances are disadvantageous. The smaller this distance, the faster the device can lock in response to an acting unphysiological force.

[0019] Description of the invention

[0020] Based on the known prior art, it is an object of the invention to provide an improved device and a corresponding method for stabilizing body joints.

[0021] This object is achieved by means of a device according to claim 1. Advantageous embodiments emerge from the subclaims.

[0022] Accordingly, a device for stabilizing body joints and / or supporting sports equipment is proposed.The device comprises a receptacle, wherein the receptacle is filled with a filling medium, a first body for interacting with the filling medium, wherein the first body is arranged displaceably in the receptacle, a force transmission body for transmitting an external force to the first body, a second body for interacting with the filling medium, which second body is arranged displaceably in the receptacle, wherein the second body can be elastically coupled to the first body via a coupling element, wherein the second body and / or the first body have at least one passage opening through which the filling medium can flow, and wherein the first body forms a valve body and the second body forms a valve seat, so that a flow of the filling medium through the passage opening can be permitted or prevented depending on the valve position.According to the invention, the device comprises a third body for positioning the first body and the second body relative to each other, wherein the third body overlaps with the first body at a first region and with the second body at a second region in a relative displacement direction (VR) of the first and the second body.

[0023] The relative displacement direction (VR) refers to the direction in which the first body and the second body can be moved by the fixture. This movement is due to a lifting movement between the force-transmitting body and the fixture when external forces act on the fixture. This corresponds to the direction of movement of the fixture.

[0024] The overlap of the first and second bodies in the relative displacement direction enables precise guidance of both bodies when they are moved relative to each other by external forces. This increases the probability that the two bodies will come into contact and completely block the passage opening, contributing to the smooth behavior of the device. The valve system, which is created by the interaction between the first and second bodies and controls the flow of the filling medium, enables precise control of the forces acting on the first and second bodies.

[0025] The controlled interaction of the first body with the second body allows the device to adapt to different levels of support or stabilization, making it extremely versatile for different user needs, whether in medical joint stabilization or to improve athletic performance.

[0026] The elastic coupling between the first and second bodies allows for both flexibility and stability, increasing comfort and reducing impact while maintaining structural integrity.

[0027] The inclusion of a third body that overlaps with an area of ​​the first and second body prevents unwanted displacement of the first and second bodies relative to each other. The contact area between the first body and the second body in the event of a collision between the two bodies can therefore be precisely defined. By guiding the first body and the second body along a relative displacement direction, the first body and the second body can meet at the contact area. Displacement of the first body relative to a second body in an orientation deviating from the relative displacement direction can be prevented by the third body. In the event of a collision between the two bodies, complete blockage of the filling medium through the passage opening can thus be ensured.Furthermore, the dimensions of the passage opening between the first body and the second body can be regulated. If relative movement of the first body and the second body in a direction deviating from the relative displacement direction is prevented by a third body, the dimension, and thus the flow of the filling medium, is defined by the spacing of the first body and the second body in the relative displacement direction. This restriction enables precise control of the force and pressure transmission of the device.

[0028] In a preferred embodiment of the device, the third body is configured to limit a relative displacement path between the first body and the second body.

[0029] Limiting the displacement of the first and second bodies allows the position of the moving bodies to remain stable, reducing the risk of malfunctions or damage due to excessive movement. This increases the longevity and reliability of the device. Furthermore, controlling the displacement allows for more precise control of the filling medium flow, resulting in more consistent and smooth device behavior.

[0030] In a further preferred embodiment, the third body is configured to guide the second body during a relative displacement with respect to the first body.

[0031] Guiding the relative displacement of the second body relative to the first body can contribute to improved stability and precision during movement. Because the second body is held in position and cannot be displaced uncontrollably, a more consistent interaction between the various components of the device is ensured, improving its overall performance.

[0032] Furthermore, the guidance by the third body enables a uniform distribution of forces and loads, resulting in better power transmission and reduced wear on the moving parts. This can increase the service life of the device and reduce maintenance costs. In a further preferred embodiment, the first body and / or the second body comprises at least one holding device for coupling to the third body in order to limit a relative displacement path between the first body and the second body.

[0033] A holding device on the first body and / or the second body for coupling with the third body can increase the stability of the entire device by controlling the relative movement of the two bodies and preventing unwanted displacement. This results in more consistent functionality and can lead to increased precision in stabilizing body joints or supporting sports equipment.

[0034] Furthermore, the holding device enables easier handling and assembly of the components, as the coupling between the bodies is clearly defined. This can reduce production and maintenance costs, increasing overall efficiency.

[0035] Furthermore, this configuration can promote user safety by minimizing the risk of sudden movements or malfunctions that could be caused by uncontrolled relative displacement of the bodies.

[0036] In a further preferred embodiment, the second body and / or the first body comprises a fastening device for fixing the third body.

[0037] A fastening device on the first body and / or the second body can improve the stability and reliability of the entire structure by keeping the third body securely positioned and preventing uncontrolled movement between the bodies. This leads to consistent performance of the device, especially in applications where precise control and stability are required. Furthermore, the fastening device facilitates assembly and disassembly of components, simplifying maintenance and parts replacement. This can both reduce production costs and increase the service life of the device.

[0038] In a further preferred embodiment, the third body comprises a clamp, preferably a flexible clamp, which is configured to adhere to the second body or to the first body via a clamping force.

[0039] The integration of a clamp, particularly a flexible clamp, into the third body, configured to adhere to the first and / or second body via a clamping force, provides an adaptable and secure connection between the components that can dynamically adapt to different conditions and forces. This improves the stability of the entire device, as the clamp ensures a firm adhesion without restricting the mobility of the other parts.

[0040] In a further preferred embodiment, the third body is connected to the second body or the first body via a joining connection.

[0041] A joint connection enables a robust and durable assembly of the components, increasing the structural integrity of the device. This leads to better overall stability and reduces the risk of mechanical failure or damage from external influences.

[0042] A joint also enables precise alignment of parts to ensure optimal functionality and interaction between moving components. This accuracy can improve fixture performance, especially in applications that require high precision.

[0043] Furthermore, the joint can simplify assembly and disassembly processes by creating a clear and defined connection between components. This can facilitate maintenance and extend the life of the device by reducing the need for frequent adjustments or repairs.

[0044] In a further preferred embodiment, the third body has a radial projection on the second region and / or on the first region with respect to the relative displacement direction (VR) in order to fix the third body to the second body and / or the first body.

[0045] A radial projection on one or both areas of the third body improves the stability and security of the connection by preventing unwanted sliding or displacement of the third body.

[0046] Furthermore, the radial protrusion facilitates assembly and disassembly of components by creating a clear and defined contact surface. This can reduce maintenance time and increase the usability of the device. Furthermore, the radial protrusion can help minimize unwanted movement, resulting in more consistent and reliable device performance. This is particularly beneficial for maximizing the effectiveness of stabilization or support.

[0047] In a further preferred embodiment, when the valve seat is closed, the contact area of ​​the first body with the second body comprises at least 40% of the cross-sectional area of ​​the first body.

[0048] A valve seat with a contact area of ​​the first body with the second body comprising at least 40% of the cross-sectional area of ​​the first body ensures a reliable seal between the first and second bodies, resulting in effective control of the flow of the filling medium. An improved sealing effect is crucial to ensure that the medium can flow only when desired and contributes to the consistency of the device's functionality.

[0049] The generous contact area also allows for even pressure distribution, reducing the likelihood of damage or wear at the contact points. This can extend the service life of the components and reduce the need for frequent maintenance or repairs. Furthermore, the increased contact area contributes to increasing the stability of the connection between the two bodies, especially under varying pressure and load conditions.

[0050] In a further preferred embodiment, an outer diameter of the force transmission body comprises at most 80% of an outer diameter of the first body.

[0051] This dimensioning can contribute to optimized force transmission, as the force-transmitting body is able to interact effectively with the first body without restricting its mobility or flexibility. This enables more precise control of the forces acting on the device and improves overall efficiency.

[0052] Reducing the diameter of the force transmission body also enables a lower overall mass, thus ensuring a lighter system. This can make the device easier to handle and use. Furthermore, the smaller size of the force transmission body can help save space within the device, resulting in a more compact design. A compact design is often advantageous because it facilitates integration into various systems and increases user-friendliness. In a further preferred embodiment, the third body comprises a metal, in particular a stamped sheet metal part, and the first body and the second body comprise a plastic, in particular polybutylene terephthalate.

[0053] The use of metal for the third body allows for increased strength and stability. Metallic components are generally more resistant to mechanical stress and offer improved structural integrity, which is especially important when the device is subjected to high forces or loads. The use of polybutylene terephthalate for the first and second bodies creates a beneficial combination of lightness and strength. Polybutylene terephthalate is considered resistant to chemical influences and offers good heat resistance. This contributes to the overall weight reduction of the device while ensuring durability and performance.

[0054] Furthermore, the combination of metal and plastic in this configuration enables effective dampening of vibrations and shocks. The metal body can provide structural stability, while the plastic parts help absorb unwanted vibrations, increasing comfort and safety during use.

[0055] In a further preferred embodiment, the coupling element is prestressed in an initial position of the device, wherein the prestress results from the relative positioning of the first body and the second body.

[0056] In a further preferred embodiment, the coupling element comprises at least one spring element, wherein the spring element is pre-compressed by at least 50% of a length of the spring element.

[0057] A pre-compressed configuration of the spring element results in increased preload, resulting in improved responsiveness and sensitivity of the device. These properties are crucial for efficiently transferring dynamic forces and ensuring that the stabilization or support responds quickly and precisely to changing loads.

[0058] In addition, the spring element can help to absorb shocks and vibrations, thereby increasing comfort for the user and reducing the risk of injury or fatigue during use. In a further preferred embodiment, the coupling element comprises at least one spring element, wherein the spring element has a spring hardness in a range between 2 N / mm and 6 N / mm.

[0059] The targeted selection of spring stiffness allows for precise adjustment of the damping properties of the device. A spring stiffness in a range between 2 N / mm and 6 N / mm ensures that the device operates effectively under both low and high loads.

[0060] The use of a spring element with a spring hardness in the range between 2 N / mm and 6 N / mm promotes the service life of the device. By avoiding overloads and deformations during use, material fatigue is reduced, thus reducing the need for maintenance and repair.

[0061] In a further preferred embodiment, the third body comprises at least one recess for providing a fluid flow, wherein the recess is preferably arranged in a circumferential surface of the third body and extends in the relative displacement direction (VR).

[0062] Through the targeted flow of fluid, the device can respond dynamically to different loads, thus providing optimal stabilization or support. The permitted fluid flow contributes to the dampening of shocks and vibrations by providing an additional means of energy absorption. This can increase user comfort and reduce the risk of injury or fatigue during use of the device.

[0063] In a further preferred embodiment, the third body has arms extending alternately in an outer circumferential surface, wherein the arms extend along the relative displacement direction (VR).

[0064] The arms of the third body overlap with the second body in the relative displacement direction VR of the device. This allows the first body to be centered relative to the second body, ensuring precise closure of the passage opening when the first and second bodies are in a closed valve position. Recesses are located between the arms of the third body, allowing the flow of the filling medium.

[0065] Brief Description of the Figures Preferred further embodiments of the invention are explained in more detail by the following description of the figures. They show:

[0066] Figure 1 schematically shows a perspective view of a device for stabilizing movements of two parts of a body region and / or a sports device that can be moved relative to one another, according to one embodiment,

[0067] Figure 2 shows schematically a sectional view of the device from Figure 1,

[0068] Figure 3a-d schematically show perspective sectional views of the third body of the device of Figure 1,

[0069] Figure 4a schematically shows a sectional view of the device of Figure 1 while the first body and the second body are spaced apart from each other,

[0070] Figure 4b schematically shows a sectional view of the device of Figure 1 while the first body and the second body are in contact with each other,

[0071] Figure 5 schematically shows a sectional view of the end face of the first portion of the first body and the end face of the second body of the device of Figure 1.

[0072] Detailed description of preferred embodiments

[0073] Preferred embodiments are described below with reference to the figures. Identical, similar, or equivalent elements in the different figures are provided with identical reference numerals, and a repeated description of these elements is partially omitted to avoid redundancies.

[0074] Figure 2 shows a schematic sectional view of a device 1 for stabilizing body joints and / or for supporting sports equipment. At one end of a force-transmitting body 50, which is located inside a receptacle 20, two bodies 40, 60 are displaceably arranged, which can interact with a filling medium 30 with which the receptacle 20 is filled. The first body 40 is elastically coupled to the second body 40 via a coupling element 70. Furthermore, a third body 80 is included, which, in a relative displacement direction VR of the first body 40 and the second body 60, overlaps with the first body 40 at a first region 82 and with the second body 60 at a second region 84. The third body 80 has the function of limiting a relative displacement path between the first body 40 and the second body 60.Because the limitation of the relative displacement path between the first body 40 and the second body 60 is assumed by the third body - and not by the first and second bodies themselves - larger contact surfaces can be provided between the first body 40 and the second body 60, which leads to improved sealing between the two bodies 40, 60 and thus to an improved stabilizing or supporting function of the device 1. Furthermore, the modular design comprising three bodies enables optimized assembly of the device 1, since the first body 40, the second body 60, and the third body 80 can be lined up one after the other and pushed together. This considerably simplifies the manufacturing process.

[0075] The receptacle 20 of the device 1 is filled with a filling medium 30. The filling medium 30 is a Newtonian fluid such as silicone oil. Alternatively, dilatant fluids can also be used as the filling medium. Shear-thickening plastics can also be used, with the plastic being in powder form.

[0076] The device 1 is described in detail below. Figure 1 shows a perspective view of the device 1. The device 1 comprises a receptacle 20 for receiving a filling medium and a force transmission body. The force transmission body partially protrudes from the receptacle 20, wherein the part of the force transmission body beyond the receptacle 20 is enclosed by a flexible section 92. The flexible section 92 can follow lifting movements of the force transmission body. Furthermore, the flexible section 92 serves to return the force transmission body to its original position after a deflection due to an external force. At a distal end 10 of the device 1, the force transmission body has a connection element 90, by means of which the force transmission body of the device 1 can be connected to the environment, for example to a point on the body of a user or to sports equipment such as a sports shoe.At a distal end of the receptacle 20, a connection projection 26 is arranged, by means of which the receptacle 20 can be connected to the environment, for example to another body part of the user or sports equipment. At a proximal end 21 of the receptacle 20, which simultaneously forms a proximal end 12 of the device 1, a plug is provided which seals off the interior of the receptacle from the environment. Alternatively, the receptacle can be closed at the proximal end, with the proximal end then forming a closed base of the receptacle. The receptacle 20 shown in Figure 1 is cylindrical. Alternatively, the receptacle can also be cuboid-shaped or oval.

[0077] As shown in Figure 2, the first body 40 is rotationally symmetrical and has a stepped structure. The first body 40 is formed in one piece. The first body 40 has a first section 43 and a second section 44, the second section 44 being tapered in diameter compared to the first section 43. The second section 44 extends towards the proximal end 21 of the receptacle. The conical transition, which has a tapered diameter, between the first section 43 and the second section 44 forms a holding device 42 for fixing and holding the third body 80. Furthermore, the holding device 42 can alternatively have any desired undercut or indentation.

[0078] The force transmission body 50 is formed by a wire cable and extends from the first body 40 through a passage opening 64 of the second body 60 and finally through an opening 25 of the receptacle 20. Alternatively, the force transmission body can be designed in the form of a rod element made of plastic. Furthermore, the force transmission body can also be designed in a fiber-like manner. Furthermore, the force transmission body can also be made of metal, such as aluminum, magnesium, or stainless steel.

[0079] The force transmission body 50 is press-fitted into a central recess of the first body 40. Alternatively, the force transmission body 50 can be glued, welded, or formed integrally with the first body 40. Furthermore, the connection between the force transmission body 50 and the first body 40 can also be of a form-fitting nature.

[0080] The first section 43 of the first body 40 has, as shown schematically in Figure 5a, an annular end face 46 on the side facing the second body 60.

[0081] As shown in Figure 2, the second body 60 is rotationally symmetrical. The second body 60 has a central bore through the body in the axis of the displacement direction VR, the diameter of the bore being larger than the diameter of the force transmission body 50. As a result, an annular passage opening 64 is formed between the bore in the second body and the force transmission body 50. The second body 60 has a recess in the direction of the proximal end of the receptacle 21, the recess being arranged concentrically to a longitudinal axis of the second body 60. The diameter of the recess is larger than the diameter of the passage opening 64. The coupling element 70 is at least partially received in the recess of the second body 60. Furthermore, the coupling element 70 rests against the first body 40 and spaced the two bodies apart in a rest state in which no or physiological forces or

[0082] Velocities act on the device. In a disturbed state of the first body 40 and the second body 60, the passage opening 64 provides a flow cross-section for the filling medium 30 through which the filling medium 30 can flow.

[0083] Figure 5 shows a schematic comparison of an annular end face 46 of the first body 40 and an annular end face 66 of the second body 60. Figure 5 shows a plan view of the end face 46 of the first body 40 and the end face 66 of the second body 60. In the installed state, as shown, for example, in Figure 4A, the end faces 46, 66 depicted in Figure 5 face each other.

[0084] Figure 5 shows an annular contact surface 48 of the first end face 46, which, when the device is closed, rests against the end face 66 of the second body 60. In Figure 5, the contact surface 48 extends radially inward from the outer circumferential line of the end face 46, with a dashed circle marking the inner boundary of the contact surface 48.

[0085] Figure 5 shows an annular contact surface 68 of the second end face 66, which, when the device is closed, abuts the end face 46 of the first body 40. In Figure 5, the contact surface 68 extends radially outward from the inner circumferential line of the annular end face 66, with a dashed circle marking the outer boundary of the contact surface 68. When the device 1 is closed, the contact surfaces 48, 68 of the first body 40 and the second body 60 abut one another.

[0086] As shown in Figure 2, the second body 60 is recessed on a portion of the outer surface, wherein an O-ring 63 is arranged in this recess, the earring 63 slidably sealing the second body 60 against the inner circumferential surface of the receptacle 20. The second body 60 is circumferentially recessed on a portion of the outer surface. The recess provides a fastening device 62 for fixing and holding the third body 80. Furthermore, the fastening device 62 can be formed by any desired undercut or a local indentation. The second body 60 is made of a thermoplastic material with high component precision, preferably by injection molding. Due to their plastic properties, the components of the device 1 are resistant to liquid ingress into the material, whereby the components do not swell in the filling medium 30 used and their dimensions are not changed.One possible thermoplastic material is polybutylene terephthalate, although other plastics and materials can also be used.

[0087] The coupling element 70 is formed by a spring element, wherein the spring element has a spring hardness in a range between 2 N / mm and 6 N / mm, according to test method DIN 2098. Such a spring element enables the use of a filling medium 30 with a lower viscosity, allowing the device to be filled more quickly. Preferably, the viscosity value is between 200 cSt and 300 cSt, according to test method DIN 53000-1. Silicone oil with such a viscosity is used here.

[0088] As shown in Figure 2, the third body 80 overlaps the first body 40 and the second body 60. The third body 80 has a first region 82, wherein the first region 82 overlaps the first body 40. The third body 80 has a second region 84, wherein the second region 84 overlaps the second body 60.

[0089] Figures 3a to 3d show detailed views of the third body 80 from different perspectives. As shown in Figure 3a, the third body 80 has an opening 88 through which the first body passes when installed. Starting from the opening 88, the third body 80 comprises a radial section 81. As shown in Figures 3a and 3d, the radial section 81 extends segmentally to an outer circumference of the third body 88. The segments of the radial section 81 have arms 86 extending alternately in the outer circumferential surface of the third body 88 at their outer ends. The arms 86 are spaced apart by recesses 87. According to Figures 3a to 3d, the third body 80 has three arms 86, wherein the arms extend along the displacement direction VR of the device. Alternatively, the third body can have one, two, three, four, five or another plurality of arms. Have any number of arms 86.In the second region 84 of the arms 86, the arms 86 each have a radially inwardly directed clamping section 83.

[0090] The third body 80 is a sheet metal stamping made of aluminum. Alternatively, the third body 80 can be made of plastic, steel, or another metal. As shown in Figure 2, the second section 44 of the first body 40 extends through the opening of the third body 80, with the holding device 42 of the first body 40 abutting the inner circumference of the radial section of the third body 80. The third body 80 overlaps with the second body 60 in the relative displacement direction VR of the device 1. The arms of the third body 80 overlap with the second body 60 in the relative displacement direction VR of the device 1. This centers the first body 40 relative to the second body 60, so that precise closure of the passage opening 64 can be ensured when the first body 40 and the second body 60 assume a closed valve position.Between the arms 86 of the third body 80 there are recesses which allow a flow of the filling medium 30.

[0091] The arms of the third body are flexible and can be bent apart for assembly purposes, in particular in order to fit the radially inwardly directed clamping sections 83 over the outer circumference of the second body 60. As shown in Figure 2, the radially inwardly directed clamping sections 83 of the third body are seated in the circumferential recess or the fastening device 62 of the second body. The diameter of the outer circumference of the second body 60, which is in contact with the third body, is selected such that the arms of the third body 80 are subject to prestress even when engaged, i.e., are bent slightly outwards. As a result, the three bodies 40, 60, 80 are detachably coupled to one another.

[0092] The clamping sections 83 of the third body are formed in the form of undercuts, wherein the clamping sections 83 form a clamped connection with the fastening device 62 of the second body 60. Alternatively, the second body 60 and the third body 80 can also be joined by means of a joining connection, such as gluing, laser welding, or ultrasonic welding. Furthermore, the third body 80 can also have a different number of clamping sections, and the shape of the clamping sections 83 can also be configured differently.

[0093] As shown in Figure 2, by coupling the first body 40 and the second body 60 by means of the third body 80, the relative displacement path between the first body 40 and the second body 60 is limited. This allows the maximum relative displacement path to be predefined when force is transmitted from the outside to the first body 40. By coupling the first body 40 and the second body 60 by means of the third body 80 via the holding device 42 and the fastening device 62, the third body 80 compresses the coupling element 70 via the first body 40 and the second body 60. The coupling element 70 is subject to a preload between the first body 40 and the second body 60 in the rest position of the device.

[0094] Figure 4a schematically shows a sectional view of the device 1 shown in Figure 1 in a resting state, wherein the first body 40 and the second body 60 are spaced apart from each other. The facing end surfaces of the two bodies 40, 60 are not in contact, so that the first chamber 23 and the second chamber 24 are in fluid communication.

[0095] If the second body 60 is moved relative to the receptacle 20 by a force emanating from the coupling element 70, the filling medium 30 can flow through the opening between the end faces of the first body 40 and the second body 60 between the second chamber 24 and the first chamber 23. Accordingly, the opening between the end faces of the first body 40 and the second body 60 defines a hydraulic diameter for the filling medium 30. Starting from the second chamber 24, the filling medium 30 passes through the passage opening 64 on the way to the first chamber 23, the hydraulic diameter between the first body 40 and the second body 60 and finally the recesses between the arms of the third body 80. In the event that the device returns to its starting position from a deflected state, the flow path of the filling medium 30 is correspondingly reversed.

[0096] The first body 40 is spaced apart from the coupling element 70 from the second body 60 by a maximum of the limit of the relative displacement path and rests with the holding device 42 on the radial projection of the first region 82 of the third body 80. The second body 60 is fixed in the fastening device 62 by the contact of the clamping sections 83 of the third body 80. The coupling element 70 has a predefined preload. If non-critical relative displacement speeds, i.e. physiological speeds, act on the device 1, the device 1 can execute a lifting movement, i.e. the first body 40, the second body 60 and the third body 80 can be moved by the receptacle without leaving the relative rest position of the three bodies 40, 60, 80 with respect to one another. In this case, the first body 40 does not move towards the second body 60 due to a force acting on the force transmission body 50 from the outside.

[0097] When forces act on the first body 40 which lead to critical relative displacement speeds in the device 1, i.e. at unphysiological speeds, the coupling element 70 yields, so that the first body 40 is moved towards the second body 60 in the guide of the third body 80.

[0098] Figure 4b schematically shows a sectional view of the device 1 from Figure 1 in a loaded state, wherein the first body 40 and the second body 60 are in contact with each other with their respective end faces 46, 66. The first body 40 is displaced along the displacement direction VR from the force transmission body 50 by an external force acting on the force transmission body 50 towards the second body 60. In this case, the first body 40 is guided by the third body 80. In this case, the first region 82 of the third body 80 and the holding device 42 of the first body 40 are spaced apart. The second body 60 is further fixed in the fastening device 62 by the contact of the clamping sections 83 of the third body 80. In this case, the coupling element 70 is compressed until the end face 46 of the first section 43 of the first body 40 is in contact with the end face 66 of the second body 60.The valve seat is closed by the contact of the end faces of the two bodies 40, 60. The contact area of ​​the first section 43 of the first body 40 with the second body 60 comprises 40% of the end face 46 of the first section 43 of the first body 40. Alternatively, the contact area of ​​the first section of the first body with the second body can comprise more than 40% of the end face of the first section of the first body. Furthermore, the outer diameter of the force transmission body 50 comprises 25% of the outer diameter of the end face 46 of the first section 43 of the first body 40. Alternatively, the outer diameter of the force transmission body and the outer diameter of the end face of the first section of the first body can also have a different ratio to one another, wherein the ratio is at most 80%. This guarantees that sufficiently high sealing surfaces are provided between the two bodies 40, 60.The flow of the filling medium 30 through the passage opening 64 from the second chamber 24 into the first chamber 23 is prevented due to the sufficient sealing surfaces of the two bodies 40, 60. The device 1 thus blocks in the event of an unphysiological external force.

[0099] Where applicable, all individual features presented in the embodiments may be combined and / or exchanged without departing from the scope of the invention.

[0100] 1 device

[0101] 10 distal end

[0102] 12 proximal end

[0103] 20 recordings

[0104] 21 proximal end

[0105] 23 First Chamber

[0106] 24 second chamber

[0107] 25 Opening

[0108] 26 Connection lead

[0109] 30 filling medium

[0110] 40 First Body

[0111] 42 Holding device

[0112] 43 First Section

[0113] 44 Second Section

[0114] 46 frontal area

[0115] 48 contact surface

[0116] 50 power transmission bodies

[0117] 60 Second Body

[0118] 62 Fastening device

[0119] 63 O-ring

[0120] 64 passage opening

[0121] 66 frontal area

[0122] 68 contact surface

[0123] 70 coupling element

[0124] 80 Third Body

[0125] 81 radial section

[0126] 82 first area 83 clamping section

[0127] 84 second area

[0128] 86 Arm

[0129] 87 Recess 88 Opening

[0130] 90 connecting element

[0131] 92 flexible section

[0132] VR shift direction

Claims

1. A device (1) for stabilizing body joints and / or for supporting sports equipment, comprising: a receptacle (20), wherein the receptacle (20) is filled with a filling medium (30), a first body (40) for interacting with the filling medium (30), wherein the first body is displaceably arranged in the receptacle (20), a force transmission body (50) for transmitting an external force to the first body (40), a second body (60) for interacting with the filling medium (30), which is displaceably arranged in the receptacle (20), wherein the second body is elastically coupled to the first body (40) via a coupling element (70), wherein the second body (60) and / or the first body (40) have at least one passage opening (64) through which the filling medium (30) can flow, and wherein the first body (40) forms a valve body and the second body (60) forms a valve seat,so that a flow of the filling medium (30) through the passage opening (64) can be permitted or prevented depending on the valve position, characterized by a third body (80) for positioning the first body (40) and the second body (60) relative to one another, wherein the third body (80) overlaps with the first body (40) at a first region (82) and with the second body (60) at a second region (84) in a relative displacement direction (VR) of the first body (40) and the second body (60).

2. Device (1) according to claim 1, characterized in that the third body (80) is configured to limit a relative displacement path between the first body (40) and the second body (60).

3. Device (1) according to claim 1 or 2, characterized in that the third body (80) is configured to guide the second body (60) during a relative displacement with respect to the first body (40).

4. Device (1) according to one of the preceding claims, characterized in that the first body (40) and / or the second body (60) comprises at least one holding device (42) for coupling to the third body (80) in order to limit a relative displacement path between the first body (40) and the second body (60).

5. Device (1) according to one of the preceding claims, characterized in that the second body (60) and / or the first body (40) comprises a fastening device (62) for fixing the third body (80).

6. Device (1) according to one of the preceding claims, characterized in that the third body (80) comprises a clamp, preferably a flexible clamp, which is configured to adhere to the second body (60) or to the first body (40) via a clamping force.

7. Device (1) according to one of the preceding claims, characterized in that the third body (80) is connected to the second body (60) or the first body (40) via a joining connection.

8. Device (1) according to one of the preceding claims, characterized in that the third body (80) has a radial projection on the second region (84) and / or on the first region (82) with respect to the relative displacement direction (VR) in order to fix the third body (80) to the second body (60) and / or the first body (40).

9. Device (1) according to one of the preceding claims, characterized in that when the valve seat is closed, the contact area of ​​the first body (40) with the second body (60) comprises at least 40% of the cross-sectional area of ​​the first body (40).

10. Device (1) according to one of the preceding claims, characterized in that an outer diameter of the force transmission body (50) comprises at most 80% of an outer diameter of the first body (40).

11. Device (1) according to one of the preceding claims, characterized in that in an initial position of the device (1) the coupling element (70) is prestressed, wherein the prestress results from the relative positioning of the first body (40) and the second body (60).

12. Device (1) according to one of the preceding claims, characterized in that the coupling element (70) comprises at least one spring element, wherein the spring element is pre-compressed by at least 50% of a length of the spring element.

13. Device (1) according to one of the preceding claims, characterized in that the coupling element (70) comprises at least one spring element, wherein the Spring element has a spring hardness in a range between 2 N / mm and 6 N / mm.

14. Device (1) according to one of the preceding claims, characterized in that the third body (80) comprises at least one recess (87) for providing a fluid flow, wherein the recess (87) is preferably arranged in a circumferential surface of the third body and extends in the relative displacement direction (VR).

15. Device (1) according to one of the preceding claims, characterized in that the third body (80) has arms (86) extending alternately in an outer circumferential surface, the arms extending along the relative displacement direction (VR).

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