Sealing unit for rotating elements

Abstract

Sealing unit (10) for rotating elements (106), comprising - a first sealing section (12), - a second sealing section (14), - a third sealing section (16), wherein the first sealing section (12), the second sealing section (14) and the third sealing section (16) are formed integrally together, wherein the first sealing section (12) is configured to engage in a recess (104) of a component (102), wherein the third sealing section (16) is configured to form a sealing effect to the rotating element (106), wherein the second sealing section (14) is configured to form a predetermined setting force for the third sealing section (16) based on a position of the first sealing section (12), such that the predetermined setting force is adjustable based on a distance (18) along an axis of rotation (20) of the rotating element (106) between the recess (104) and the rotating element (106).

Description

Technical field

[0001] The invention relates to a sealing unit for rotating elements, an assembly and a vehicle. State of the art

[0002] Currently, a wide variety of solutions exist for sealing different components, especially shafts and / or bearings. Due to increasing demands on sealing performance, sustainability, and robustness, the need for innovative and robust component sealing solutions is growing. Description of the invention

[0003] The invention is defined in its independent claims. Advantageous embodiments are described in the dependent claims and the following description.

[0004] An advantage of the sealing unit for rotating elements according to claim 1 is that a secure fit during application of the sealing unit can be ensured by the engagement of the first sealing section in the recess. Furthermore, the engagement of the first sealing section allows for non-destructive installation and removal of the sealing unit. Preferably, the frictional forces or torques on the surface to be sealed can be precisely adjusted by means of the predetermined setting force, thus reducing the overall load on all components.

[0005] This is achieved according to the invention by the sealing unit for rotating elements having a first sealing section, a second sealing section and a third sealing section, wherein the first sealing section, the second sealing section and the third sealing section are formed integrally together, wherein the first sealing section is configured to engage in a recess of a component, wherein the third sealing section is configured to form a sealing effect to the rotating element, wherein the second sealing section is configured to form a predetermined setting force for the third sealing section based on a position of the first sealing section, such that the predetermined setting force is adjustable based on a distance along an axis of rotation of the rotating element between the recess and the rotating element.

[0006] In other words, the predetermined actuation force can be set by combining the design of the second sealing section with the distance between where the first sealing section engages the recess and where the third sealing section rests against the rotating element. This allows both the frictional torque and the frictional forces to be reduced or precisely adjusted, and also enables the entire sealing unit to be installed and removed non-destructively by inserting and removing it from the recess. Preferably, the one-piece construction of the sealing sections means that they can be manufactured using a primary forming process, such as injection molding or similar, particularly with a single stroke. Preferably, the first sealing section can snap into the recess, thus creating a first sealing effect against the housing.Preferably, the third sealing section rests against the rotating element, thus also creating an internal sealing effect of the sealing unit. This provides a seal between the rotating element and a housing. Preferably, the third sealing section can have one or more sealing edges that can be axially pre-tensioned by the second sealing section to improve the seal against the rotating element. Preferably, the first sealing section can be designed as a snap-in bead or similar feature to ensure a secure fit against the housing. Preferably, the outer contour of the first sealing section can have additional protrusions, curves, or similar features to further improve the seal between the sealing unit and the housing.Preferably, a transition between the first sealing section and the second sealing section can be designed as a knee joint or similar, in order to be able to adjust the setting force in a targeted manner.

[0007] The dependent claims preferably describe further developments of the invention.

[0008] It is further preferred that the direction of the setting-up force is essentially parallel to the axis of rotation of the rotating element.

[0009] One advantage of this embodiment is that the force can be applied parallel to the axis of rotation of the rotating element, while the force effect or the direction of extension of the first sealing section is essentially orthogonal to it. This further expands the range of applications for the sealing unit.

[0010] Preferably, the first sealing section has at least one raised element which extends substantially orthogonally to the axis of rotation of the rotating element, wherein the raised element is configured to engage in the recess, wherein the sealing effect of the third sealing section is formed substantially parallel to the axis of rotation of the rotating element.

[0011] An advantage of this embodiment is that the raising element can be interlocked with the recess, for example with a snap-in bead, so that the raising element can form a support force against the recess, which is then transferred via the second sealing section to a third sealing section in order to form the erection force.

[0012] Preferably, the raised element has a first flank and / or a second flank, wherein the first flank and / or the second flank are each configured to form a further sealing effect.

[0013] One advantage of this embodiment is that, depending on the sealing scenario, the contour or type of flank can be adapted accordingly to increase the sealing performance between the first sealing section and the housing or recess. For example, the first flank and / or the second flank can be a chamfer and / or a cone or similar feature. For example, a chamfer can simplify the insertion of the sealing unit into the recess and can also be advantageous in preventing creep leakage.

[0014] Further preferably, the sealing unit comprises at least one material, in particular a polyurethane and / or an elastomer material, which has a predetermined stiffness, wherein the predetermined stiffness is selected such that the first sealing section can be inserted into the recess and is selected such that the predetermined setting force is formed by means of the second sealing section.

[0015] One advantage of this embodiment is that the predetermined setting force can be adjusted more precisely using the predetermined stiffness.

[0016] Preferably, the second sealing section has at least one section element which rests against the component at a distance from the recess, wherein the second sealing section is configured to form the predetermined setting force for the third sealing section based on the position of the first sealing section and the support element.

[0017] An advantage of this embodiment is that a support element can be formed on the second sealing section, which can, for example, be supported against the housing in which the recess is arranged, thus providing an additional support point and / or deflection point. This can be advantageous, for example, if the center point of the first sealing section is located relatively close to a support point of the third sealing section along the axis of rotation, and thus the support element is axially spaced along the axis of rotation from the raised section to the first sealing section, thereby creating a leverage effect.

[0018] Preferably, the second sealing section has at least one retaining section which is oriented essentially orthogonally to the axis of rotation, wherein the retaining section is designed to simplify pressing the first sealing section into the recess.

[0019] One advantage of this embodiment is that the holding section can be, in particular, a flat surface or similar, on which one can place either a tool or a finger to simplify the assembly of the sealing unit in the recess.

[0020] Preferably, the retaining section has at least one recess, wherein the recess is designed to provide for an expansion of the second sealing section relative to the first sealing section when the second sealing section is deflected relative to the first sealing section.

[0021] One advantage of this embodiment is that, for example, a kind of knee joint or similar can be formed between the first sealing section and the second sealing section using the recess, in order to be able to adjust the predetermined setting force more precisely.

[0022] Preferably, the first sealing section is oriented essentially orthogonally to the axis of rotation of the rotating element, wherein the second section has a deflection section which is arranged at a predetermined angle to the first sealing section, wherein the second sealing section is configured to adjust the setting force based on the distance and based on the predetermined angle.

[0023] An advantage of this embodiment is that the predetermined angle provides an additional control variable for further adjusting the accuracy of the predetermined setting force of the sealing unit. Preferably, the predetermined angle can be selected such that the torque or the predetermined force can be adjusted accordingly depending on the position of the support element.

[0024] Preferably, the deflection section is designed to press the third sealing section against the rotating element when the deflection section is pressurized.

[0025] An advantage of this embodiment is that, when the sealing unit is cleaned, for example with a high-pressure cleaner, the deflection section is designed to redirect the pressurized water of the high-pressure cleaner in such a way that the third sealing section is pressed against the rotating element, thus preventing the ingress of pressurized water into the component to be sealed.

[0026] Preferably, the third sealing section has a contact element, wherein the contact element is configured to form the sealing effect between the sealing unit and the rotating element.

[0027] One advantage of this embodiment is that the contact element can be, for example, a single or double sealing edge or something similar, and thus the sealing effect between the third sealing section or the contact element and the rotating element can be specifically adjusted.

[0028] Further preferably, the third sealing section has a web element, wherein the web element is arranged on a first side of the contact element which is facing away from the second sealing section, wherein the web element is configured to provide a protective effect for the contact element against fluids and / or particles.

[0029] An advantage of this embodiment is that, when fluids and / or particles act on the sealing unit from the outside, the web element spans the contact element and thus protects it from external influences. This, in particular, reduces wear on the contact element due to external influences such as fluids and / or particles.

[0030] Preferably, the first sealing section has an insertion element, wherein the insertion element is configured to align the first sealing section with the recess.

[0031] One advantage of this embodiment is that the insertion element simplifies the snapping of the sealing unit into the recess, since the insertion element provides a surface that simplifies insertion into the recess.

[0032] Preferably, the predetermined setting force is configured to displace the third sealing section along a predetermined path in order to compensate for manufacturing tolerances between the component and the rotating element.

[0033] One advantage of this embodiment is that the manufacturing tolerances can be larger, since any dimensional variations of the rotating element can be compensated for by means of the predetermined path of the third sealing section of the sealing unit.

[0034] Preferably, the first sealing section and / or the second sealing section has a collar element, wherein the collar element is configured to create a surface of the component which is oriented essentially orthogonally to the surface of revolution in order to reduce the ingress of fluid and / or particles into the recess.

[0035] One advantage of this embodiment is that the collar element can further improve the external sealing effect of the sealing unit between the sealing unit and the housing, since in the event of an impact of pressurized water, such as during high-pressure cleaning, penetration along the axis of rotation through the collar element can be prevented.

[0036] Another aspect of the invention relates to an assembly comprising a component with a recess, a rotating element which is mounted in the component, a sealing unit as described above and below, which is designed to engage in the recess and seal the mounting of the rotating element in the component.

[0037] Preferably, the component of the assembly can, for example, have a bore in which a radial recess is arranged. Preferably, the rotating element can also be a shaft or similar. More preferably, the sealing unit can snap into and / or engage with the radial recess, so that a sealing effect can be provided between the component and the rotating element.

[0038] Another aspect of the invention relates to a vehicle and / or a stationary unit comprising a sealing unit as described above and below and / or an assembly as described above and below.

[0039] All disclosures described above and below with respect to one aspect of the invention shall apply equally to all other aspects of the invention.

[0040] Exemplary embodiments of the invention are described in detail below with reference to the accompanying drawings. Drawings Fig. Figures 1 to 5 show a sealing unit according to one embodiment. Fig. Figure 6 shows an assembly according to one embodiment. Fig. Figure 7 shows a vehicle according to one embodiment. Fig. Figure 8 shows a stationary unit according to one embodiment. Embodiments of the invention

[0041] The figures are merely schematic and not to scale. Identical, equivalent, or similar elements within the figures may be marked with the same reference symbols.

[0042] Fig. Figure 1 shows a sealing unit 10 according to one embodiment.The sealing unit 10 for rotating elements 106 has a first sealing section 12, a second sealing section 14 and a third sealing section 16, wherein the first sealing section 12, the second sealing section 14 and the third sealing section 16 are formed integrally together, wherein the first sealing section 12 is configured to engage in a recess 104 of a component 102, wherein the third sealing section 16 is configured to form a sealing effect with the rotating element 106, wherein the second sealing section 14 is configured to form a predetermined setting force for the third sealing section 16 based on a position of the first sealing section, such that the predetermined setting force is adjustable based on a distance 18 along a rotation axis 20 of the rotating element 106 between the recess 104 and the rotating element 106.

[0043] As in the Fig. As can be seen in Figure 1, the sealing unit 10 is arranged in one of the recesses 104 of the component 100. Preferably, a raised element 22 of the first sealing section 12 engages in the recess 104. Preferably, the raised element 22 extends substantially orthogonally to the axis of rotation 20 of the rotating element 106, as shown in the Fig. 1 is symbolized.

[0044] Fig. Figure 2 shows a sealing unit 10 according to one embodiment. As in the Fig. As can be seen in Figure 2, the sealing unit has a first sealing section 12 in which a raised element 22 is arranged. Preferably, the raised element 22 has a first flank 24 and a second flank 26 that engage in the recess 104. As shown in the Fig. As shown in Figure 2, the contours of the first flank 24 and the second flank 26 can differ from each other in order to adapt the sealing unit 10 to a specific sealing application. Preferably, the second sealing section 14 can have at least one support element 28, which rests along the component 102 at a distance from the recess. As shown in the Fig. As can be seen in Figure 2, the distance 18 between the third sealing section 16 and the first sealing section 12 is relatively small. This allows for the formation of a lever and a more easily adjustable setting force on the third sealing section 16 by means of the support element 28. Furthermore, the second sealing section 14 preferably has at least one retaining section 30, as shown, for example, in the Fig. 2 is shown, which can be designed as a flat surface to simplify the assembly of the sealing unit 10.

[0045] Preferably, the first sealing section 12 can be oriented essentially orthogonally to the axis of rotation 20 of the rotating element 106, as shown in the Fig. Figure 2 illustrates this. Preferably, the second sealing section 14 can have a deflection section 34, which is arranged in a predetermined means 36 relative to the first sealing section 12. More preferably, the predetermined setting force can thus be specifically adjusted.

[0046] Fig. Figure 3 shows an embodiment of the sealing unit 10. As in the Fig. As shown in Figure 3, the second sealing section 14 has a retaining section 30. Preferably, the retaining section 30 can have at least one recess 32, wherein the recess 32 is configured to allow expansion of the second sealing section 14 relative to the first sealing section 12 when the second sealing section 14 is deflected relative to the first sealing section 12.

[0047] Preferably, the recess 32 can be configured as a type of knee joint. More preferably, the second sealing section 14 can have a deflection section 34 which, when pressurized, presses the third sealing section 16 against the rotating element 106. More preferably, the third sealing section 16 can have a contact element 38, which is, for example, a sealing edge or a plurality of sealing edges.

[0048] Preferably, a web element 40 can also be arranged on the third sealing section 16, which covers the contact elements 38.

[0049] Preferably, the first sealing section 12 can have an insertion element 42 to simplify the alignment of the first sealing section 12, in particular a raised element 22, with the recess 104. Preferably, the first sealing section 12 and / or the second sealing section 14 can have a collar element 44, wherein the collar element 44 is configured to form a surface 46 of the component which is oriented substantially orthogonally to the surface of revolution 20 in order to reduce the ingress of fluid and / or particles into the recess 104.

[0050] Fig. Figure 4 shows a sealing unit 10 according to one embodiment. In the Fig. Figure 4 shows a force flow in the sealing unit 10. As in the Fig. As can be seen in Figure 10, the main force guide points are, firstly, the support element 28, so that the force can be applied to the third sealing section 16 via the contact element 38 on the rotating element 106.

[0051] Fig. Figure 5 shows a sealing unit 10 according to one embodiment. The sealing unit 10 is as shown in the Fig. Figure 5 shows the sealing unit 10 arranged on a component 102, such that the sealing unit 10 can seal between the component 102 and a collar of the rotating element 106. Preferably, the angle 36 in which the second sealing section 14 is arranged orthogonally to the axis of rotation 20 can be adapted based on an application scenario.

[0052] Fig. Figure 6 shows a component 200 according to one embodiment. The component 200 comprises a component 102 which has a recess 104, a rotating element 106 which is mounted in the component 102, and a sealing unit 10 as described above and below, which is configured to engage in the recess 104 in order to seal the mounting of the rotating element 106 in the component 102.

[0053] Fig. Figure 7 shows a vehicle 300 according to one embodiment. The vehicle 300 may preferably have a sealing unit 10 as described above and below and / or an assembly 200 as described above and below.

[0054] Fig. Figure 8 shows a stationary unit 400 according to one embodiment. The stationary unit 400 can comprise a sealing unit 10, as described above and below, and / or an assembly 200, as described above and below.

Claims

[1] Sealing unit (10) for rotating elements (106), comprising - a first sealing section (12), - a second sealing section (14), - a third sealing section (16), wherein the first sealing section (12), the second sealing section (14) and the third sealing section (16) are formed integrally together, wherein the first sealing section (12) is configured to engage in a recess (104) of a component (102), wherein the third sealing section (16) is configured to form a sealing effect to the rotating element (106), wherein the second sealing section (14) is configured to form a predetermined setting force for the third sealing section (16) based on a position of the first sealing section (12), such that the predetermined setting force is adjustable based on a distance (18) along an axis of rotation (20) of the rotating element (106) between the recess (104) and the rotating element (106). [2] Sealing unit (10) according to claim 1, wherein one direction of the setting force is oriented substantially parallel to the axis of rotation (20) of the rotating element (106). [3] Sealing unit (10) according to one of the preceding claims, wherein the first sealing section (12) has at least one raised element (22) which extends substantially orthogonally to the axis of rotation (20) of the rotating element (106), wherein the raised element (22) is configured to engage in the recess (104), wherein the sealing action of the third sealing section (16) is formed substantially parallel to the axis of rotation (20) of the rotating element (16). [4] Sealing unit (10) according to claim 3, wherein the raised element (22) has a first flank (24) and / or a second flank (26), wherein the first flank (24) and / or the second flank (26) are each configured to form a further sealing effect. [5] Sealing unit (10) according to one of the preceding claims, wherein the second sealing section (14) has at least one support element (28) which is spaced apart from the recess (104) and rests against the component (102), wherein the second sealing section (14) is configured to form the predetermined setting force for the third sealing section (16) based on the position of the first sealing section (12) and the support element (28). [6] Sealing unit (10) according to one of the preceding claims, wherein the second sealing section (14) has at least one retaining section (30) which is oriented substantially orthogonally to the axis of rotation (20), wherein the retaining section (30) is configured to simplify pressing the first sealing section (12) into the recess (104). [7] Sealing unit (10) according to claim 6, wherein the retaining section (30) has at least one recess (32), wherein the recess (32) is configured to provide an extension of the second sealing section (14) to the first sealing section (12) when the second sealing section (14) is deflected to the first sealing section (12). [8] Sealing unit (10) according to one of the preceding claims, wherein the first sealing section (12) is oriented substantially orthogonally to the axis of rotation (20) of the rotating element (106), wherein the second sealing section (14) has a deflection section (34) which is arranged at a predetermined angle (36) to the first sealing section (12), wherein the second sealing section (14) is configured to adjust the setting force based on the distance (18) and based on the predetermined angle (36). [9] Sealing unit (10) according to claim 8, wherein the deflection section (34) is configured to press the third sealing section (16) against the rotating element (106) when the deflection section (34) is pressurized. [10] Sealing unit (10) according to one of the preceding claims, wherein the third sealing section (16) has a contact element (38), wherein the contact element (38) is configured to form the sealing effect between the sealing unit (10) and the rotating element (106). [11] Sealing unit (10) according to claim 10, wherein the third sealing section (16) has a web element (40), wherein the web element (40) is arranged on one side of the contact element (38) which is facing away from the second sealing section (14), wherein the web element (40) is configured to provide a protective effect for the contact element (38) against fluids and / or particles. [12] Sealing unit (10) according to one of the preceding claims, wherein the predetermined setting force is configured to displace the third sealing section (16) along a predetermined path to compensate for manufacturing tolerances between the component (102) and the rotating element (106). [13] Sealing unit (10) according to one of the preceding claims, wherein the first sealing section (12) and / or the second sealing section (14) has a collar element (44), wherein the collar element (44) is configured to form a surface (46) of the component (102) which is oriented substantially orthogonally to the surface of revolution (20) in order to reduce the ingress of fluid and / or particles into the recess (104). [14] Assembly (200) comprising: a component (102) which has a recess (104), a rotating element (106) which is mounted in the component (102), a sealing unit (10) according to one of the preceding claims which is configured to engage in the recess (104) and to seal the mounting of the rotating element (106) in the component (102). [15] vehicle (300) and / or stationary unit (400) comprising: a sealing unit (10) according to any one of claims 1 to 13 and / or an assembly (200) according to claim 14.

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