SECURING ARRANGEMENT OF A RETAINING RING FOR A MOTOR VEHICLE AND MOTOR VEHICLE

Description

[0001] The invention relates to a securing arrangement of a retaining ring on a first component and a second component for a motor vehicle. Furthermore, the invention relates to a motor vehicle, in particular a motor vehicle, with at least one such securing device.

[0002] DE 10 2019 121 294 A1 discloses a retaining ring for a radial groove in a coupling device, wherein the radial groove is formed by axially extending fingers which are bent radially inwards at their free ends and there form the radial groove for the retaining ring.

[0003] US 2022 / 065280 A1 discloses a retaining ring for use externally on a shaft or internally in a housing bore.

[0004] The object of the present invention is to provide a securing arrangement of a securing ring on a first component and a second component for a motor vehicle and a motor vehicle with at least one such securing arrangement, so that a particularly large scope of functional fulfillment can be realized.

[0005] This object is achieved by a safety arrangement having the features of patent claim 1 and by a motor vehicle having the features of patent claim 8. Advantageous embodiments with expedient further developments of the invention are specified in the subclaims.

[0006] A first aspect of the invention relates to a securing arrangement of a securing ring on a first component and a second component for a motor vehicle, in particular for a motor vehicle preferably designed as a passenger car. This means that the motor vehicle, preferably designed as a motor vehicle, in particular as a passenger car, and also simply referred to as a vehicle, in its fully manufactured state comprises the securing arrangement and thus the securing ring, the first component, and the second component. Very preferably, the first component and the second component are components of a coupling device, in particular a clutch, of the motor vehicle.In particular, the retaining ring and the components are part of a claw brake, by means of which, for example, a planet carrier of a planetary gear set can be fixed, in particular in a form-fitting manner, in a rotationally fixed manner to a housing and thus secured against rotation relative to the housing.

[0007] In the securing arrangement, the securing ring is partially arranged in a groove on the outer circumference of the first component. This means that a first partial region of the securing ring is arranged in the groove of the first component, in particular in the radial direction of the securing ring. A second partial region of the securing ring, which adjoins the first partial region, in particular in the radial direction of the securing ring, in particular outwards, is arranged outside the groove and thus protrudes from the groove, so that the securing ring partially protrudes from the groove. The feature that the groove of the first component is an outer circumference groove of the first component is to be understood in particular that the groove is provided, in particular introduced, on an outer circumference of the first component.Thus, for example, the groove is a groove, i.e., a recess in the outer circumferential surface of the first component, so that the groove is open outward, for example, in the radial direction of the retaining ring and thus in the radial direction of the components. The groove is also referred to as a radial groove or is designed as a radial groove. In particular, the groove extends completely around the first component in the circumferential direction extending around the axial direction of the retaining ring and thus of the components.

[0008] The retaining ring has, in particular precisely, two free ends which lie opposite one another, in particular in the circumferential direction of the retaining ring running around the axial direction of the retaining ring. In particular, the free ends are spaced apart from one another, in particular in the circumferential direction of the retaining ring. The retaining ring is bent at its two opposite free ends in the same direction running in the axial direction of the retaining ring. In other words, the free ends are bent or folded in the same axial direction. The feature that the direction runs in the axial direction of the retaining ring is to be understood that the direction runs parallel to the axial direction of the retaining ring or coincides with the axial direction of the retaining ring.

[0009] The two free ends of the retaining ring engage, in particular by being axially bent or folded over, in respective first axial pockets of the first component in the axial direction of the retaining ring. In particular, the first pockets of the first component are arranged next to the groove in the axial direction of the retaining ring and thus of the components, and thus arranged laterally of the groove, so that the first pockets follow the groove in the axial direction or adjoin the groove. The respective first pocket is delimited in the circumferential direction of the retaining ring and thus in the circumferential direction of the components, in particular on both sides, by respective first walls of the first component, which are in particular designed as solid bodies and are preferably inherently rigid, so that the free ends in the circumferential direction of the retaining ring can be or are supported on at least two of the first wall regions.As a result, relative rotation between the retaining ring and the first component can be avoided or at least limited, in particular both in a first direction of rotation running around a rotation axis and in a second direction of rotation running around the rotation axis and opposite to the first direction of rotation. This is achieved in particular in that, for example, one of the free ends can be or is supported in the first direction of rotation on one of the first wall regions of one of the first pockets, and the other end can be or is supported in the second direction of rotation on one of the first wall regions of the other of the first pockets. The circumferential direction of the retaining ring runs around the rotation axis, and the rotation axis runs in the axial direction of the retaining ring, wherein, for example, the rotation axis coincides with the axial direction of the retaining ring or runs parallel to it.

[0010] In the securing arrangement according to the invention, the two free ends of the securing ring engage in the axial direction of the securing ring and thus of the components into respective second axial pockets of the second component, whereby a relative rotation about the axis of rotation between the securing ring and the second component is avoided or at least limited. The previous and following explanations regarding the first pockets can easily be applied to the second pockets as well, so that, for example, the respective second pocket is delimited in the circumferential direction of the securing ring and thus of the components, in particular on both sides, by respective second wall regions of the second component, which are in particular designed as solid bodies and are preferably dimensionally stable, i.e., inherently rigid.Thus, for example, one free end of the retaining ring can be supported or is supported in the first direction of rotation on one of the second wall regions of one of the second pockets, and the other free end of the retaining ring can be supported or is supported in the second direction of rotation on one of the second wall regions of the other of the second pockets. Since the free ends engage in the first pockets of the first component and in the second pockets of the second component, relative rotations between the components about the axis of rotation are also avoided or limited. The said axis of rotation runs in the axial direction of the retaining ring, wherein the axis of rotation coincides in particular with the axial direction of the retaining ring.In addition, the components are secured axially, i.e. in the axial direction of the retaining ring, to one another or relative to one another by means of the retaining ring, so that axial relative movements, i.e. relative movements between the components occurring in the axial direction of the retaining ring, are avoided or at least limited by means of the retaining ring. The invention therefore makes it possible to achieve a particularly wide range of functions. On the one hand, axial securing of the components is possible, with the second component being secured axially to the first component, for example, by means of the retaining ring, or vice versa. On the other hand, the retaining ring itself is secured against rotation both relative to the first component and relative to the second component. In addition, the components are secured against one another or relative to one another by means of the retaining ring.This wide range of functions can be achieved without radially thickening the retaining ring, since the retaining ring does not engage in recesses in the radial direction, but engages in the aforementioned pockets in the axial direction.

[0011] The second component is arranged, for example, radially outside the first component. For example, the second component has an inner radius that is smaller than an outer radius of the retaining ring. The first pockets and the second pockets are axially directed or aligned. This means that the respective pocket is an axial recess, i.e., a recess extending in the axial direction, into which the respective end of the retaining ring engages axially, i.e., in the axial direction.The invention is based in particular on the following findings and considerations: When using retaining rings, for example in coupling devices, conventional solutions can, due to high rotational speeds and the resulting centrifugal forces, lead to a tangential rotation of the retaining ring, i.e. rotation in the circumferential direction of the retaining ring, in particular relative to the components that are axially secured to one another by means of the retaining ring. This can lead to increased wear due to the retaining ring becoming embedded in the groove, particularly in its groove geometry. This influence has a negative impact on the service life, which is why this tangential rotation of the retaining ring relative to the first component having the groove should be avoided.Excessive rotation of the retaining ring relative to the first component having the groove is usually solved by the retaining ring having an anti-rotation device which comprises at least a change in the cross-section of the retaining ring over its circumference. In a counterpart, i.e. in the first component having the groove, in which the retaining ring is partially arranged, a partial groove depth increase must be introduced for this purpose. A disadvantage of this anti-rotation device, however, is that the groove requires more radial installation space to implement the anti-rotation device compared to solutions in which the anti-rotation device is omitted. However, if no appropriate countermeasures are taken, this can lead to undesired rotation of the retaining ring relative to the first component.

[0012] The aforementioned problems and disadvantages can be avoided by the invention. Firstly, the invention makes it possible to avoid undesired relative rotations between the components as well as between the retaining ring and the first component and between the retaining ring and the second component. This can be achieved by having the ends engage in the axial pockets, thereby securing the retaining ring against rotation relative to both the first component and the second component, and thereby securing the first component against rotation relative to the second component and vice versa. This security against rotation can be achieved without requiring excessive radial installation space, since cross-sectional changes of the retaining ring over its circumference as well as a partial increase in the groove depth can be avoided.In other words, the large range of functions can be realized without increasing the radial installation space, as with a retaining ring without anti-twist protection.

[0013] In order to particularly reliably prevent excessive relative rotation between the retaining ring and the respective component, as well as between the components, one embodiment of the invention provides for the retaining ring to be bent at its two opposite free ends in the same direction, extending in the axial direction of the retaining ring, by at least or exactly 10°. In other words, it is preferably provided that the free ends are bent or folded in the same axial direction by at least or exactly 10°.

[0014] The invention is an efficient method to save radial installation space and at the same time to protect the retaining ring and the components against tangential movements, and thus against rotations.

[0015] The retaining ring is preferably made of a metallic material, in particular steel. Furthermore, it is preferably provided that the retaining ring is formed in one piece. In other words, the retaining ring is preferably formed from a single piece, so that the retaining ring is formed by a monoblock or is designed as a monoblock. In other words, the retaining ring is preferably designed as an integral body, thus as an integrally manufactured or formed body.

[0016] A further embodiment is characterized in that the first component is a sliding sleeve for the aforementioned claw brake of a transmission device of the motor vehicle, wherein the second component is an actuating piston for the sliding sleeve or a connecting element between the sliding sleeve and the actuating piston. In particular, it is conceivable that the sliding sleeve is connected to the actuating piston by means of the connecting element. This allows for a particularly effective and efficient securing arrangement.

[0017] It has proven particularly advantageous if the actuating piston and the connecting element are formed integrally with one another. In other words, it is preferably provided that the actuating piston and the connecting element are formed from a single piece, so that the actuating piston and the connecting element are not composed of separate and interconnected parts, but rather the actuating piston and the connecting element are designed as a single block or formed by a single block. This allows the installation space requirement to be kept particularly low.

[0018] In order to realize a particularly efficient and effective anti-rotation device in a particularly cost-effective manner, a further embodiment of the invention provides for the connecting element and the actuating piston to be formed separately from one another and connected to one another in a rotationally fixed manner. Furthermore, the connecting element and the actuating piston are immobile relative to one another in the axial direction of the retaining ring, thus being firmly connected to one another, so that axial relative movements between the connecting element and the actuating piston are avoided or prevented.

[0019] In a further, particularly advantageous embodiment of the invention, the first component has on its outer circumference a web which runs in particular completely around the circumferential direction of the first component and which extends, for example, radially outwards from the groove or from a surface area adjacent to the groove and / or the web. For example, the web adjoins the groove in the axial direction. In particular, it is conceivable for the first pockets to be formed in the web. This makes it possible to create a cost-effective and easily assembled as well as axially displaceable connection between the sliding sleeve and the actuating piston or the connecting element.

[0020] For example, a magnet, in particular a permanent magnet, can be provided on the actuating piston or the connecting element for detecting an axial position of the actuating piston or the connecting element, wherein the magnet reliably does not rotate away from the sensor field of a sensor for detecting the magnet during operation, so that signal detection is always possible. In order to be able to realize excessive relative rotations in a particularly cost-effective manner, a further embodiment of the invention provides for the retaining ring to be formed from a rod profile with a constant cross-section.

[0021] A second aspect of the invention relates to a motor vehicle, preferably designed as a motor vehicle, in particular as a passenger car, which has at least one security arrangement according to the first aspect of the invention. Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention, and vice versa.

[0022] Further advantages, features, and details of the invention will become apparent from the following description of a preferred embodiment and from the drawing(s). The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective specified combination, but also in other combinations or on their own.

[0023] The drawing shows: Fig. 1 shows a schematic perspective view of a securing arrangement of a securing ring on a first component and a second component; Fig. 2 shows a further schematic perspective view of the securing arrangement in detail; Fig. 3 shows a schematic and sectional perspective view of the securing arrangement in detail; Fig. 4 shows a further schematic perspective view of the securing arrangement in detail; Fig. 5 shows a schematic perspective view of the securing ring; Fig. 6 shows a schematic perspective view of the securing ring in detail; Fig. 7 shows a schematic top view of the securing ring; and Fig. 8 shows a schematic and sectional side view of the securing ring.

[0024] In the figures, identical or functionally identical elements are provided with the same reference symbols.

[0025] Fig. 1shows, in a schematic perspective view, a securing arrangement 10 of a securing ring 12 on a first component 14 and a second component 16 of a motor vehicle, preferably designed as a motor vehicle, in particular as a passenger car. The motor vehicle is also simply referred to as a vehicle. For example, the securing ring 12 and the components 14 and 16 are components of a transmission device, in particular a coupling device of the transmission device, designed, for example, as a claw brake. Particularly well viewed in conjunction with Figures 2 and 3It can be seen that the retaining ring 12 in the securing arrangement 10 is partially arranged in a groove 18 of the first component 14, which is also referred to as a radial groove or is designed as a radial groove, wherein the retaining ring 12 protrudes outwards partially from the groove 18 and thus from the component 14 along its radial direction and in particular in the radial direction of the retaining ring 12. This means that a first partial area of the retaining ring 12 engages in the groove 18 in the radial direction of the retaining ring 12 and thus of the components 14 and 16, and is therefore arranged in the groove 18. A second partial area of the retaining ring 12 is outside the

[0026] Groove 18 is arranged and projects outwards, in particular in the radial direction of the retaining ring 12, out of the groove 18 and thus out of the component 14. Because the retaining ring 12 is partially arranged in the groove 18, axial relative movements between the retaining ring 12, also simply referred to as the ring, and the component 14 are at least limited or avoided. The axial relative movements between the retaining ring 12 and the component 14 are to be understood as relative movements between the ring and the component 14 in the axial direction of the retaining ring 12 and thus of the components 14 and 16. The groove 18 runs completely around the component 14 in the circumferential direction of the retaining ring 12 and thus of the components 14 and 16, which runs around the axial direction of the retaining ring 12 and thus of the components 14 and 16.It can be seen that the groove 18 is formed in an outer circumferential surface 20 of the component 14 and is thus provided on an outer circumference of the component 14. At least a partial region of the second component 16 is formed at least in a direction extending in the axial direction of the retaining ring 12 and the components 14 and 16 and in . Fig. 1 by an arrow 22 through the retaining ring 12, in particular through the second partial region of the retaining ring 12, whereby axial relative movements between the components 14 and 16 are avoided or at least limited, at least in the direction illustrated by the arrow 22. This means that an axial securing of the components 14 and 16 to one another is realized by means of the retaining ring 12.

[0027] How particularly good Figures 2 to 8As can be seen, the retaining ring 12 is bent at its two free ends 24 and 26, which are opposite one another in the circumferential direction of the retaining ring 12 running around the axial direction of the retaining ring 12 and the components 14 and 16, into the same, in the axial direction of the retaining ring 12, Fig. 1 by an arrow 28 and also referred to as the bending direction, wherein the bending direction is opposite to the direction illustrated by the arrow 22. From Figures 2 and 3 It can be seen that the free ends 26 engage in the axial direction of the retaining ring 12 and thus of the components 14 and 16 in respective first axial pockets 30 and 32 of the first component 14. When reference is made below to the axial direction, this refers, unless otherwise stated, to the axial direction of the retaining ring 12 and thus of the components 14 and 16.

[0028] It can be seen that the pocket 30 is delimited in the circumferential direction of the retaining ring 12 and thus of the components 14 and 16 on both sides by wall regions 34 and 36 of the component 14. The pocket 32 is delimited in the circumferential direction of the retaining ring 12 on both sides by respective wall regions 38 and 40 of the component 14. The circumferential direction of the retaining ring 12 and the components 14 and 16 runs around the axial direction and is, for example, in Fig. 2 illustrated by a double arrow 42.

[0029] It can be seen that the free end 24 can be supported or is supported, in particular directly, on the wall region 36 in a first direction of rotation running in the circumferential direction of the retaining ring 12. In a second direction of rotation opposite to the first direction of rotation and running in the circumferential direction of the retaining ring 12, the free end 26 of the retaining ring 12 can be supported or is supported, in particular directly, on the wall region 38. This prevents relative rotations between the retaining ring 12 and the component 14 about an axis of rotation coinciding with the axial direction, both in the first direction of rotation and in the second direction of rotation.

[0030] For example, Fig. 2It can be seen that the free ends 24 and 26 also engage in the axial direction into respective second axial pockets 44 and 46 of the second component 16. The axial pocket 44 of the component 16 is delimited on both sides in the circumferential direction of the retaining ring 12 by respective wall regions 48 and 50 of the component 16. The pocket 46 of the component 16 is delimited on both sides in the circumferential direction of the retaining ring 12 by respective wall regions 52 and 54 of the component 16. In this case, the free end 24 can be supported or is supported on the wall region 50, in particular directly, in the first direction of rotation, and the free end 26 can be supported or is supported, in particular directly, on the wall region 52 in the second direction of rotation. This also makes it possible to avoid relative rotations between the retaining ring 12 and the component 16 in both the first direction of rotation and the second direction of rotation around the axis of rotation.Furthermore, this prevents relative rotations around the axis of rotation between components 14 and 16, both in the first and second directions of rotation. These relative rotations can be prevented, in particular, by positively locking them, since the free ends 24, 26 engage in the pockets 30, 32, 44, and 46.

[0031] In order to avoid relative rotations particularly effectively and efficiently, the free ends 24, 26 are bent in the bending direction by at least or exactly 10°. Fig. 4 It can be seen that, for example, the free end 26 engages both in the pockets 32 and in the pocket 46. In Fig. 4 the second part of the retaining ring 12 protruding from the groove 18 is designated 56.

[0032] Fig. 5 shows the retaining ring 12 in a schematic perspective view. Particularly well Fig. 5It can be seen that the free ends 24 and 26 are bent in the same direction (bending direction) indicated by the arrow 28. In addition, Fig. 5 It can be seen that the retaining ring 12 is formed in one piece. In particular, the retaining ring 12 is formed from a rod profile with a constant cross-section. Fig. 6 the bent, free end 26 of the retaining ring 12 can be seen. Fig. 7 shows the retaining ring 12 in a schematic plan view, where the ends 26 and in particular their bending are particularly clearly visible. In addition, Fig. 7 the axial direction is illustrated by a double arrow 58. In Fig. 8 The free end 26 is visible. In Fig. 8 The radial direction of the retaining ring 12 and thus of the components 14 and 16, which is perpendicular to the axial direction, is illustrated by a double arrow 60. Particularly well Fig. 8It can be seen that the retaining ring 12, in particular the entire retaining ring 12, has a particularly constant and, for example, rectangular cross-section. List of reference symbols

[0033] 10Retaining arrangement 12Retaining ring 14First component 16Second component 18Groove 20Outer peripheral surface 22Arrow 24Free end 26Free end 28Arrow 30Pocket 32Pocket 34Wall area 36Wall area 38Wall area 40Wall area 42Double arrow 44Pocket 46Pocket 48Wall area 50Wall area 52Wall area 54Wall area 56Second partial area 58Double arrow 60Double arrow

Claims

1. Retaining arrangement (10) of a retaining ring (12) on a first component (14) and a second component (16) for a motor vehicle, in which: - the retaining ring (12) is partly arranged in an outer peripheral groove (18) of the first component (14); - the retaining ring (12) is bent at its two opposite free ends (24, 26) in the same direction (28) extending in the axial direction (58) of the retaining ring (12); - the two free ends (24, 26) of the retaining ring (12) engage in the axial direction (58) of the retaining ring (12) into respective first axial pockets (30, 32) of the first component (14); and - the two free ends (24, 26) of the retaining ring engage in the axial direction (58) of the retaining ring (12) into respective second axial pockets (44, 46) of the second component (16).

2. Retaining arrangement (10) according to claim 1, characterized in that the retaining ring (12) is bent at its two opposite free ends (24, 26) in the same direction (28) extending in the axial direction (58) of the retaining ring (12) by at least or exactly 10 degrees.

3. Retaining arrangement (10) according to either claim 1 or claim 2, characterized in that the first component (14) is a sliding sleeve for a claw brake of a transmission device, the second component (16) being an actuating piston for the sliding sleeve or a connecting element between the sliding sleeve and the actuating piston.

4. Retaining arrangement (10) according to claim 3, characterized in that the actuating piston and the connecting element are formed integrally with each other.

5. Retaining arrangement (10) according to claim 3, characterized in that the connecting element and the actuating piston are formed separately from one another and are connected to one another against rotation and so as to be immovable in the axial direction (58) of the retaining ring (12) relative to one another.

6. Retaining arrangement (10) according to any of the preceding claims, characterized in that the first component (14) has on its outer periphery a ridge running in the circumferential direction (42) of the first component (14).

7. Retaining ring (10) according to any of the preceding claims, characterized in that the retaining ring (12) is formed from a rod profile with a constant cross-section.

8. Motor vehicle comprising at least one retaining arrangement (10) according to any of the preceding claims.