Steering device having steering shaft and end stop and steering-by-wire system having such steering device

Abstract

The invention relates to a steering device (1) comprising a steering shaft (5) and an end stop device (10) for limiting a steering angle of rotation, the end stop device (10) having a first blocking element (11) and the first blocking element (11) being movable in the axial direction of a central longitudinal axis (6) of the steering shaft (5) in order to limit the steering angle of rotation, the first blocking element (11) interacts with a stationary further blocking element (12) in order to block a rotational movement of the steering shaft (5) about the central longitudinal axis (6) and in two opposite rotational directions (7, 8) of the steering shaft (5). In order to be able to reliably absorb and transmit large forces and / or torques in the stop position of the steering device (1), the movement of the first blocking element (11) is guided by means of a drive device (16), which is connected to the steering shaft (5) in a stationary manner for rotation with the steering shaft (5).

Description

Technical Field

[0001] The invention relates to a steering device, comprising a steering shaft and an end stop device for limiting a steering rotation angle, the end stop device having a first blocking element, and the first blocking element being movable in the axial direction of a central longitudinal axis of the steering shaft in order to limit the steering rotation angle, the first blocking element cooperating with another fixed blocking element in order to prevent a rotational movement of the steering shaft about the central longitudinal axis and in two mutually opposite rotational directions of the steering shaft. In addition, the invention relates to a steer-by-wire system having such a steering device. Background Art

[0002] Such a steering device and such a steer-by-wire system are known from DE 10 2021 206 069 A1.

[0003] In particular, in steer-by-wire systems, there is no mechanical connection between a steering control device, such as a steering wheel, and a steering gear. Therefore, the steering command is transmitted via a controller to an electric motor, which moves a rack via a steering gear to steer the wheels. The rack can adjust the steering rotation angle at the wheels by means of a steering tie rod. Preferably, the steering device includes a feedback motor, which simulates the steering force in order to provide the driver with feedback of the steering force acting.

[0004] In conventional steering systems with a mechanical connection between the steering wheel and the rack, the steering rotation angle of the steering wheel is limited due to a predetermined mechanical structure. However, in a steer-by-wire system, the steering wheel can be turned infinitely in the direction of rotation due to the lack of a mechanical connection between the steering device and the steering gear. However, this poses the risk of overloading or damaging the steering device components. In addition, the driver requires feedback about the maximum achievable steering rotation angle at the wheel.

[0005] Therefore, the above-mentioned steering devices include end stops for limiting the steering rotation angle. However, large forces and / or torques may act in the stop position. However, due to the narrow construction space, it is not possible to construct arbitrarily large stop elements or stop surfaces. Therefore, there is often a risk of overloading the steering device and thus damaging it. In addition, it is usually necessary to use undesirably high-quality and therefore expensive materials to realize the stop solution. Summary of the invention

[0006] The object of the present invention is to improve a steering device and / or a steer-by-wire system of the type described at the outset in such a way that large forces and / or torques can be reliably absorbed and transmitted in the stop position of the steering device. Preferably, a space-saving embodiment is provided. In particular, an alternative embodiment should be provided.

[0007] The object on which the invention is based is achieved by a steering device according to claim 1 and a steer-by-wire system according to claim 15. Preferred developments of the invention are specified in the dependent claims and in the following description.

[0008] The invention therefore relates to a steering device. The steering device may have a steering wheel. The term "steering wheel" is used here as a synonym for a steering device of any shape and / or design. The steering device has a steering shaft. The steering shaft is particularly rotatable or rotatably supported around its central longitudinal axis. The steering shaft can be rotated around the central longitudinal axis in two opposite directions of rotation. The steering wheel can be arranged at one end of the steering shaft.

[0009] In addition, the steering device has an end stop device. The steering rotation angle of the steering device is limited by means of the end stop device and the rotation of the steering shaft around its central longitudinal axis in the two rotation directions is therefore limited. The steering device can have a feedback motor. The steering shaft can be placed in a rotational movement around the central longitudinal axis and / or a controllable torque resistance can be provided by the feedback motor (especially when a transmission mechanism is connected in the middle). Thus, feedback of the steering force acting on the wheel can be provided for the driver of the vehicle or motor vehicle with such a steering device. In particular, the feedback motor is configured as an electric motor. The feedback motor can be arranged on the end of the steering shaft that is away from the steering wheel.

[0010] The end stop device has a first blocking element. Here, the first blocking element can be moved in the axial direction of the central longitudinal axis of the steering shaft in order to limit the steering rotation angle. In order to prevent the steering shaft from rotating around the central longitudinal axis, the first blocking element cooperates with another blocking element arranged in a fixed position. In particular, the first blocking element and the other blocking element form a blocking device.

[0011] The movement of the first blocking element is guided by means of a driver, which is connected to the steering shaft in a fixed manner for rotation therewith.

[0012] It is advantageous here that, due to the fixed connection of the entrainment device to the steering shaft or to a section of the steering shaft, a space-saving entrainment and / or guidance of the first blocking element can be achieved. In particular, alternative embodiments are possible.

[0013] Preferably, the first blocking element directly contacts the driving device. The driving device can be constructed in one piece or in multiple pieces. In particular, due to the fixed connection of the driving device on the steering shaft or a section of the steering shaft in combination with the direct contact between the driving device and the first blocking element, it is possible to drive and / or guide the first blocking element in a space-saving manner.

[0014] According to another embodiment, the end stop device has a rotating device. Here, the driving device is connected to the rotating device. The rotating device has at least one rotating element, which can rotate around the central longitudinal axis of the steering shaft and / or can rotate together with the steering shaft. In particular, the rotating device has a plurality of annular rotating elements, which are arranged in sequence along the axial direction of the central longitudinal axis. Here, each rotating element has at least one stop section for cooperating with the respectively adjacent rotating elements. In particular, the maximum steering rotation angle is predetermined by means of the rotating device. For example, a maximum steering rotation angle of ±660° can be predetermined from the zero position. The stop section can be constructed as a double-sided protrusion. In particular, the stop section extends parallel to the central longitudinal axis of the steering shaft.

[0015] Based on the rotational movement of the steering shaft, the at least one rotational element or the plurality of rotational elements can be set in rotational movement. In particular, in the case of a plurality of rotational elements, the stop sections of directly adjacent rotational elements can successively collide with each other and rotate together when a continuous rotational movement is performed in the same rotational direction. The maximum steering rotation angle of the steering shaft in both rotational directions can be predetermined or adjusted by the number of rotational elements and / or the position of the stop sections.

[0016] Preferably, the rotation device has a rotation stop which limits the rotational movement of the at least one rotating element in the first rotational direction and the second rotational direction. In particular, the rotation stop is held in a rotationally fixed manner and / or is designed to be annular. The rotation stop can be arranged in a rotationally fixed manner in the tubular steering column housing. Preferably, the rotation stop is supported movably in the axial direction relative to the central longitudinal axis. Therefore, the rotation stop can be moved linearly, in particular together with the first blocking element, in the axial direction of the steering shaft.

[0017] According to an extension, a transmission element is arranged between the first blocking element and the rotating device and / or the at least one rotating element. The transmission element has a first end section and a second end section facing away from the first end section. In particular, the at least one rotating element is arranged on the first end section. Preferably, the first end section is a component of the rotating device.

[0018] The first end section can have a further stop which is provided for cooperating with a stop section of the at least one rotary element. Thus, upon a rotary movement of the transfer element about the central longitudinal axis of the steering shaft, the further stop of the transfer element can strike the stop section of the at least one rotary element.

[0019] Thus, when the steering shaft rotates in one of the two rotational directions, one side of the other stop of the transmission element first collides with the stop section of the at least one rotational element or (in the case of multiple rotational elements) the directly adjacent rotational elements. Thus, in the case of multiple rotational elements and when the rotational movement continues in the same rotational direction, the stop sections of the directly adjacent rotational elements collide in sequence. Finally, the stop section of the rotational element directly adjacent to the rotational stop collides with the stop of the rotational stop. As a result, when the rotation continues in the same rotational direction, further rotation of the rotational element and / or the transmission element is blocked, whereby all the rotational elements are eventually blocked.

[0020] The first end section may have a tubular receptacle for arranging the at least one rotating element. The at least one rotating element is supported on the tubular receptacle rotatably around the central longitudinal axis of the steering shaft. The tubular receptacle may be constructed in one piece or in multiple pieces. For example, the tubular receptacle is formed by a plurality of tongue-shaped springs preloaded radially outward relative to the central longitudinal axis of the steering shaft. The at least one rotating element or a plurality of rotating elements are sleeved onto the tongue-shaped springs. The plurality of tongue-shaped springs may be arranged uniformly in the circumferential direction around the first end section. Preferably, an annular rotation stop is also arranged on the tubular receptacle. In particular, the free ends of the tongue-shaped springs each have a latching projection, the tongue-shaped spring passes through the at least one rotating element and the rotation stop and engages the rotation stop from behind. As a result, the at least one rotating element, the rotation stop and the transmission element are held together when viewed in the axial direction of the central longitudinal axis of the steering shaft. Thus, a compact, continuous structural form is obtained.

[0021] In particular, the first end section has a smaller outer diameter than the second end section. Preferably, the outer diameter of the first end section matches the inner diameter of the at least one rotating element and / or the rotation stop. As a result, the outer circumference of the first end section can be in contact with the inner circumference of the at least one rotating element and / or the rotation stop. In particular, the outer diameter of the second end section corresponds to the outer diameter of the at least one rotating element and / or the rotation stop.

[0022] The first blocking element is fixed to the second end section. The outer diameter of the second end section can correspond to the outer diameter of the first blocking element. In particular, due to the fixed connection between the second end section and the first blocking element, the rotational movement of the steering shaft can be transmitted to the transmission element via the first blocking element and can be transmitted to the rotating device via the transmission element.

[0023] The second end section can have a plurality of fixing tongues, which are received in a fixing receiving portion configured corresponding to the fixing tongues in the outer side of the first blocking element in a form-locking manner for fixed connection with the first blocking element. The plurality of fixing tongues can be evenly distributed around the second end section in the circumferential direction. In particular, the fixing tongues each have a first latching element on their inner side, which cooperates with a second latching element configured correspondingly to the fixing receiving portion in a form-locking manner. For example, the first latching element is configured as a protrusion extending radially to the central longitudinal axis of the steering shaft and the second latching element is configured as an opening corresponding in shape.

[0024] According to another embodiment, a spring element, in particular a compression spring, is provided between the driver and the transmission element. Here, the spring element is supported on the transmission element on one side and directly supported on the driver or on the spring receiving element connected to the driver on the other side. In particular, the spring element reacts to the interaction between the first blocking element and the other blocking element. The driver can be constructed as a one-piece or multi-piece. Preferably, the driver is constructed as an integral and / or sleeve-shaped. In this one-piece or integral construction of the driver, the spring receiving portion for supporting the spring element can be constructed as an integrated and / or integral component of the driver itself. Alternatively, a spring receiving element for supporting the spring element, which is constructed as a separate component in addition to the driver, can be connected to the driver. In particular, the spring element is at least connected to the driver in a rotationally fixed manner. Alternatively, the spring element can be supported in a non-rotational manner. For example, the spring element can be inserted into an axial end of the driver along the axial direction relative to the central longitudinal axis of the steering shaft.

[0025] According to an extended solution, the first blocking element, the transmission element and the rotating device form a structural unit. The structural unit can rotate around the central longitudinal axis of the steering shaft and / or can move in the axial direction of the central longitudinal axis of the steering shaft based on the interaction with the driving device. Preferably, the structural unit can only move in the axial direction of the central longitudinal axis of the steering shaft as a whole. The connection between the first blocking element, the transmission element and the rotating device is constructed so as to block the axial relative movement between the first blocking element, the transmission element and the rotating device. In particular, the end stop device and / or the structural unit are configured to be tubular. As a result, the steering shaft can extend through the entire end stop device and / or the structural unit. Preferably, the end stop device is arranged between the steering shaft and the inner side of the tubular steering column housing.

[0026] According to another embodiment, at least one section of the driver or spring receiving element on the one hand and at least one section of the transmission element on the other hand form a return device for releasing the interaction of the first blocking element and the further blocking element. In particular, damage to or failure of the spring element can be compensated for by means of the return device. The spring element counteracts the interaction of the first blocking element and the further blocking element. As a result, when the steering shaft is rotated back from the end position with the maximum steering rotation angle, the first blocking element moves in the axial direction relative to the central longitudinal axis of the steering shaft and moves out of the further blocking element. In the event of damage to or failure of the spring element, the return device ensures that when the steering shaft is rotated back from the end position with the maximum steering rotation angle, the first blocking element moves in the axial direction relative to the central longitudinal axis of the steering shaft and moves out of the further blocking element.

[0027] In particular, the transmission element has at least one first inclined surface and at least one second inclined surface, and the driving device or spring receiving element has a first matching inclined surface for cooperating with the first inclined surface and has a second matching inclined surface for cooperating with the second inclined surface. Preferably, the two inclined surfaces and the two matching inclined surfaces are oriented obliquely to the axial extension of the central longitudinal axis. The two inclined surfaces and the two matching inclined surfaces can be oriented in a V-shaped manner to each other. The inclined surface and the matching inclined surface can be constructed so that they do not contact in a sound spring element. This avoids unnecessary friction in normal use. Only when the spring element is damaged or fails, the inclined surface and the matching inclined surface contact each other. The driving device or the spring receiving element can have a triangular protrusion, which has two inclined surfaces. The transmission element can have a V-shaped recess, which has two matching inclined surfaces and the protrusion is guided in the recess.

[0028] Preferably, the steering shaft extends through the end stop device, the first end of the steering shaft being designed for arranging a steering control device. In particular, the end stop device is arranged in a steering column, which is in particular telescopic. The end stop device, which is preferably tubular in design, is arranged between the steering shaft and the tubular steering column housing. In particular, the further blocking element is fixedly fastened to the inside of the steering column housing. Preferably, the rotation stop is arranged on the inside of the steering column housing in a rotationally fixed manner and at the same time axially displaceable in the direction of the central longitudinal axis of the steering shaft.

[0029] According to another embodiment, the driving device has a plurality of guide strips distributed around its periphery, and the guide strips extend parallel to the central longitudinal axis of the steering shaft. The guide strips can extend over the entire length of the driving device or only over a partial area of ​​the driving device. The guide strips act together with the guide slots of the first blocking element. In particular, the guide slots are configured on the inner side of the first blocking element of the sleeve-shaped configuration. Therefore, the driving device has an outer diameter smaller than the first blocking element. In particular, the driving device and / or the spring receiving element are partially arranged and / or accommodated in the first blocking element and partially arranged and / or accommodated in the transmission element.

[0030] Preferably, the guide strips each have an end face and / or a sliding face at the end facing the other blocking element. The end face extends perpendicularly to the central longitudinal axis of the steering shaft. In particular, the sliding face extends from the end face obliquely to the axial extension of the central longitudinal axis of the steering shaft. Preferably, the entraining device has a plurality of pairs of guide strips, the two guide strips of each pair of guide strips being configured mirror-symmetrically to each other. The sliding faces of the two guide strips of each pair of guide strips can face each other.

[0031] The guide slot of the first blocking element can respectively have a matching end face opposite to the end face of the guide strip. At least one free gap can be constructed between the end face and the matching end face. In addition, the guide slot of the first blocking element can have a matching sliding surface for cooperating with the sliding surface of the guide strip. Corresponding to the end face and / or the sliding surface, the matching end face extends perpendicular to the central longitudinal axis of the steering shaft and / or the matching sliding surface extends, especially from the matching end face, oblique to the axial extension of the central longitudinal axis of the steering shaft. In particular, the sliding surface of the guide strip is shorter than the matching sliding surface of the first blocking element. Thus, the sliding surface and the matching sliding surface can slide on each other according to the length of the two surfaces. This can realize the axial movement of the first blocking element for cooperating with the other blocking element. Preferably, multiple pairs of matching sliding surfaces are constructed in the guide slot of the first blocking element, and the two matching sliding surfaces of a pair of matching sliding surfaces are oriented in a V-shape or similar to a V-shape.

[0032] According to an extended solution, the guide strips of the driving device each have a driving surface on one side of the guide strip. In particular, in the case of a pair of guide strips, the driving surfaces of the two guide strips face each other. The first blocking element has a matching driving surface in order to cooperate with the driving surface. In particular, the driving surface and the matching driving surface are oriented parallel to the central longitudinal axis of the steering shaft. Preferably, the matching sliding surface transitions into the matching driving surface. Therefore, the matching driving surface can be constructed in the end area of ​​the matching sliding surface that faces away from the matching end surface.

[0033] According to another embodiment, in the rotation mode of the rotating device, the first blocking element can be rotated around the central longitudinal axis of the steering shaft in one of the two rotation directions by means of a driving device together with the steering shaft when the steering shaft rotates around the central longitudinal axis. In particular, when the current steering rotation angle is between two maximum steering rotation angles, the rotating device is in the rotation mode. Here, starting from the zero position, the maximum positive steering rotation angle is assigned to the first rotation direction and the maximum negative steering rotation angle is assigned to the second rotation direction opposite to the first rotation direction. Preferably, in the rotation mode of the rotating device, the sliding surface of the guide strip abuts against the section of the matching sliding surface of the first blocking element facing the other blocking element. In particular, the section of the matching sliding surface of the first blocking element facing the other blocking element is pressed onto the sliding surface of the corresponding guide strip based on the action of the spring element. In particular, in the rotation mode, two sliding surfaces of two adjacent guide strips that are away from each other abut against the matching sliding surface of the first blocking element in a V-shaped or V-like or wedge-shaped manner.

[0034] According to an extended solution, after the transition from the rotation mode of the rotating device to the stop mode, the rotating device is blocked from further rotation around the central longitudinal axis of the steering shaft. In this case, the first blocking element can only move in the axial direction relative to the central longitudinal axis by means of the driving device and when the steering shaft continues to rotate in the same rotation direction in the stop mode of the rotating device. As a result, the first blocking element is embedded in the other blocking element. In particular, the axial directional movement of the first blocking element is achieved based on the sliding movement of the matching sliding surface of the first blocking element on the sliding surface of the driving device. Alternatively, the axial directional movement of the first blocking element can be achieved by means of a threaded transmission mechanism instead of a sliding movement.

[0035] The first blocking element may have a first tooth structure, which faces the other blocking element. The other blocking element may have a second tooth structure for cooperating with the first tooth structure. Preferably, in the stop mode of the rotating device, the teeth of the first tooth structure are oriented, in particular centrally, relative to the tooth gaps of the second tooth structure. Correspondingly, in the stop mode of the rotating device, the teeth of the second tooth structure are oriented, in particular centrally, relative to the tooth gaps of the first tooth structure. The first tooth structure and the second tooth structure may be configured to correspond to each other in shape.

[0036] Preferably, the teeth of the first tooth structure and the second tooth structure have different widths. Accordingly, the tooth grooves of the first tooth structure and the second tooth structure can have different widths. Thus, the teeth of the two tooth structures can continue to not contact each other after the first blocking element moves axially and the teeth are embedded in the corresponding opposite tooth grooves.

[0037] In particular, at least one mating driving surface of the first blocking element collides with at least one driving surface of the driving device when the maximum axial extension position of the first blocking element is reached. When the steering shaft continues to rotate in the same rotational direction, the first blocking element can only rotate with the driving device around the central longitudinal axis of the steering shaft. In particular, this rotational movement is limited by the gaps generated in the circumferential direction between the axially interlocking teeth of the two tooth structures. Preferably, at least one blocking surface of the first blocking element collides with at least one mating blocking surface of the other blocking element when the maximum steering rotation angle is reached. In particular, the blocking surface and the mating blocking surface are oriented parallel to or obliquely to the central longitudinal axis of the steering shaft.

[0038] A steer-by-wire system having a steering device according to the invention is particularly advantageous. Preferably, the steer-by-wire system is developed according to the embodiments explained in conjunction with the steering device according to the invention described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention is described in detail below with the aid of the accompanying drawings. The same reference numerals represent the same, similar or functionally identical components or elements. The accompanying drawings are as follows:

[0040] Figure 1 Shows a side view of a steering device according to the present invention;

[0041] Figure 2 Show according to Figure 1 A partially transparent perspective side view of a steering device according to the invention;

[0042] Figure 3 Shown for use according to Figure 1 and 2 A perspective exploded view of an end stop device of a steering device according to the present invention;

[0043] Figure 4 Show according to Figure 3 a perspective side view of a portion of an end stop device;

[0044] Figure 5 When the rotating device is in the rotating mode, Figure 3 A perspective side view of an end stop device;

[0045] Figure 6 When the rotating device is in the stop mode, Figure 3 A partial perspective side view of an end stop device;

[0046] Figure 7 shows a perspective side view of an end stop arrangement, wherein a first blocking element is embedded in another blocking element;

[0047] Figure 8 Show according to Figure 7 a partial perspective cross-section of an end stop device; and

[0048] Fig. 9 The end stop device is shown in a perspective side view in a stop end position assigned to the maximum steering rotation angle. DETAILED DESCRIPTION

[0049] Figure 1 A side view of a steering device 1 according to the invention is shown. The steering device 1 is a component of a wire-controlled steering system, which is not shown in detail here. The steering device 1 is provided or designed, for example, for a motor vehicle. The steering device 1 has a steering column 2. In this embodiment, the steering column 2 is designed to be telescopic and thus adjustable in its length. For this purpose, the steering column 2 according to this example has a first tubular steering column housing 3 and a second tubular steering column housing 4. The first steering column housing 3 is at least partially accommodated in a linearly movable manner in the second steering column housing 4. The first steering column housing 3 can be referred to as an upper steering column and the second steering column housing can be referred to as a lower steering column.

[0050] The steering shaft 5 is arranged in the steering column 2 and thus in the first steering column housing 3 and the second steering column housing 4. The steering shaft 5 is assigned a central longitudinal axis 6, about which the steering shaft 5 is rotatably supported. Furthermore, in this embodiment, the longitudinal center axis of the first steering column housing 3 coincides with the longitudinal center axis 6.

[0051] The steering shaft 5 is connected to a steering wheel (not shown in detail here) in this embodiment. For this purpose, the end of the steering shaft 5 facing away from the second steering column housing 4 extends from the first steering column housing 3. The steering shaft 5 can be rotated or turned around the central longitudinal axis 6 in two mutually opposite rotational directions, in particular by means of a steering wheel and / or from a zero position of the steering shaft 5. The two rotational directions are indicated by arrows 7, 8.

[0052] In this embodiment, the steering device 1 has a feedback motor 9. The steering shaft 5 can be placed in a rotational motion around the central longitudinal axis 6 by the feedback motor 9 and provide a controllable torque resistance. Thus, feedback of the steering force acting on the wheel can be provided for the driver of the vehicle or motor vehicle with this steering device 1. In this embodiment, the feedback motor 9 is configured as an electric motor. In addition, the feedback motor 9 is arranged on an end (away from the end of the steering shaft 5 that is arranged for the steering wheel).

[0053] Figure 2 Show according to Figure 1 1 is a partially transparent perspective side view of a steering device 1 according to the invention. For the sake of clarity, some components such as the second steering column housing 4 are omitted here. The first steering column housing 3 is shown here partially transparent.

[0054] The steering device 1 has an end stop 10 for limiting the steering rotation angle. The rotatability or pivotability of the steering shaft 5 is thus limited by means of the end stop in two rotation directions directed opposite to each other according to arrows 7 , 8 .

[0055] The steering shaft 5 extends through an end stop device 10. The end stop device 10 is arranged in the steering column 2 or in the first steering column housing 3 in this embodiment. The end stop device is tubular in its basic shape. In addition, the end stop device 10 is arranged between the steering shaft 5 and the first steering column housing 3, which is also tubular.

[0056] Furthermore, the end stop device 10 has a first blocking element 11 and a further blocking element 12. Here, the further blocking element 12 forms a first end of the end stop device 10. Furthermore, the further blocking element 12 is fixedly fastened to the inner side of the first steering column housing 3 in a stationary manner.

[0057] Furthermore, the end stop 10 has a rotation stop 13. The rotation stop 13 forms the second end of the end stop 10 facing away from the first end or the further blocking element 12. The rotation stop 13 is arranged on the inner side of the first steering column housing 3 in a rotationally fixed manner but at the same time axially displaceable in the direction of the central longitudinal axis 6 of the steering shaft 5.

[0058] The further design and mode of operation of the end stop device 10 are explained in more detail with reference to the following figures.

[0059] Figure 3 Shown for use according to Figure 1 and 2 1 is a perspective exploded view of the end stop device 10 of the steering device 1 according to the invention. For the sake of clarity, other components of the steering device 1 are omitted here.

[0060] The first blocking element 11 and the further blocking element 12 form a blocking device 14. A rotation device 15 is formed at the end of the end stop 10 facing away from the blocking device 14.

[0061] The end stop device 10 has a driver 16. Figure 2 In the installed state, the driving device 16 is connected to the steering shaft 5 in a fixed position so as to rotate together with the steering shaft 5. Figure 2 In the installed state, direct contact is achieved between the first blocking element 11 and the entrainment device 16. The entrainment device 16 is configured to guide the first blocking element 11.

[0062] The entrainment device 16 has a plurality of guide webs 17, 18 distributed around its periphery. For the sake of clarity, not all guide webs 17, 18 are marked with reference numerals. The guide webs 17, 18 extend parallel to the central longitudinal axis 6. In this embodiment, the guide webs 17, 18 extend only over a partial region or a partial length of the entrainment device 16.

[0063] The guide strips 17, 18 are designed to cooperate with the guide slot 19 of the first blocking element 11. The guide slot 19 is formed on the inner side of the sleeve-shaped first blocking element 11. Accordingly, the entrainment device 16 has a smaller outer diameter than the first blocking element 11.

[0064] The guide strips 17, 18 each have an end face 20 and / or a sliding face 21 on the end facing the other blocking element 12. The end face 20 extends perpendicularly to the central longitudinal axis 6 and the sliding face 21 extends from the end face 20 obliquely to the axial extension of the central longitudinal axis 6. In an alternative embodiment, the end face 20 is not configured. In this embodiment, every two guide strips 17, 18 form a pair of guide strips 17, 18. The two guide strips of each pair of guide strips 17, 18 are configured mirror-symmetrically to each other. The sliding faces 21 of the two guide strips of each pair of guide strips 17, 18 face each other.

[0065] Furthermore, the guide webs 17, 18 of the entrainment device 16 each have an entrainment surface 22 on one side of the respective guide web 17, 18. In each pair of guide webs 17, 18, the entrainment surfaces 22 of the two guide webs 17, 18 face one another.

[0066] The first blocking element 11 has a first tooth structure 23, which faces the further blocking element 12. The further blocking element 12 has a second tooth structure 24 for cooperating with the first tooth structure 23. Therefore, the second tooth structure 24 is designed to face the first blocking element 11.

[0067] In this embodiment, the rotating device 15 has a plurality of, for example, three, rotating elements 25, 26, 27. The rotating elements 25, 26, 27 are supported to rotate around the central longitudinal axis 6. The rotating elements 25, 26, 27 are designed to be annular or ring-shaped. In addition, the rotating elements 25, 26, 27 are arranged one after another in the axial direction of the central longitudinal axis 6.

[0068] By means of the rotation stop 13 in accordance with Figure 1 and 2 The rotational movement of the rotating elements 25, 26, 27 is limited in the first and second rotational directions of the arrows 7 and 8. For this purpose, the annular rotation stop 13 in this embodiment is arranged according to Figure 2It is held in a rotationally fixed manner on the inner side of the first steering column housing 3 .

[0069] According to this exemplary embodiment, a transmission element 28 is arranged between the first blocking element 11 and the rotating device 15 or the rotating elements 25, 26, 27. The transmission element 28 has a first end section 29 and a second end section 30 facing away from the first end section 29. The rotating elements 25, 26, 27 are arranged on the first end section 29 so as to be rotatable about the central longitudinal axis 6. In this exemplary embodiment, the first end section 29 is a component of the rotating device 15. For this purpose, the first end section 29 forms a tubular receiving portion for arranging the rotating elements 25, 26, 27. Therefore, the rotating elements 25, 26, 27 are supported rotatably about the central longitudinal axis 6 on the tubular receiving portion formed by the first end section 29. In this exemplary embodiment, the first end section 29 or the tubular receiving portion is constructed in multiple parts. Here, the first end section 29 or the tubular receiving portion is formed by a plurality of tongue-shaped springs 31 extending axially relative to the central longitudinal axis 6 and prestressed radially outward relative to the central longitudinal axis 6. For the sake of clarity, not all tongue-shaped springs 31 are provided with reference numerals. Figure 2 In the installed state, it is put on the tongue-shaped reed 31.

[0070] In accordance with Figure 2 In the installed state, the annular rotation stop 13 is also arranged on the first end section 29 or the tubular receiving portion. Here, the rotation stop 13 can be rotatably supported relative to the first end section 29 around the central longitudinal axis 6. For this purpose, the free ends of the tongue-shaped spring 31 each have a latching projection 32 in this embodiment. The first end section 29 has a smaller outer diameter than the second end section 30. Here, the outer diameter of the first end section 29 is matched to the inner diameter of the rotating elements 25, 26, 27 and the rotation stop 13. In this embodiment, the outer circumference of the first end section 29 or the outer side of the tongue-shaped spring 31 is in contact with the inner circumference of the rotating elements 25, 26, 27 and the rotation stop 13.

[0071] In accordance with Figure 2 In the installed state, the first blocking element 11 is fixed to the second end section 30 of the transmission element 28. In this embodiment, the outer diameter of the second end section 30 corresponds to the outer diameter of the first blocking element 11. Due to the fixed connection between the second end section 30 and the first blocking element 11, the rotational movement of the steering shaft 5 (not shown in detail here) or the entrainment device 16 fixedly mounted on the steering shaft 5 can be transmitted to the transmission element 28 and thus to the rotation device 15 via the first blocking element 11.

[0072] In order to establish a fixed connection between the second end section 30 and the first blocking element 11, in this embodiment, the second end section 30 has a plurality of fixing tongues 33. In order to cooperate with the fixing tongues 33, the first blocking element 11 has a fixing receptacle 34 configured corresponding to the fixing tongues on the outside of the first blocking element 11. Figure 2 In the installed state, the fixing tongue 33 is received in the fixing receptacle 34 in a form-fitting manner. The fixing tongue 33 and the fixing receptacle 34 are uniformly configured on the transmission element 28 or the first blocking element 11 in the circumferential direction. In this embodiment, the fixing tongue 33 and the fixing receptacle 34 are designed to be trapezoidal. For the sake of clarity, not all fixing tongues 33 and fixing receptacles 34 are provided with reference numerals.

[0073] Furthermore, in this exemplary embodiment, the fastening tongues 33 each have on their inner sides a first latching element 44 (see Figure 4 ), which cooperates in a form-fitting manner with a correspondingly constructed second latching element 35 of the fixing receptacle 34. According to this example, the first latching element is designed as a projection extending radially to the central longitudinal axis 6 and the second latching element 35 is designed as a correspondingly shaped opening in the fixing receptacle 34.

[0074] The end stop device 10 further comprises a spring element 36. The spring element 36 is designed as a compression spring and is arranged between the entrainer 16 and the transmission element 28. The spring element 36 is supported on one side on the transmission element 28, namely on the transition region between the first end section 29 and the second end section 30. This transition region, which is designed in a stepped manner, is produced due to the transition of the first end section 29, since the outer diameter of the first end section 29 is smaller than the inner diameter of the second end section 30.

[0075] The spring element 36 is supported on the other side on a spring receiving element 37 connected to the driver 16. The spring receiving element 37 is configured as a separate component. Alternatively, the driver 16 can have a spring receiving portion configured integrally therewith. The spring receiving element 37 configured as a separate component is fixedly connected to the driver 16. In this embodiment, the spring receiving element 37 is inserted into an axial end of the driver 16 in the axial direction relative to the central longitudinal axis 6 by means of a plurality of slots 38. The ends of the guide strips 17, 18 facing away from the sliding surface 21 are embedded in the slots 38. For the sake of clarity, not all slots 38 are provided with reference numerals.

[0076] The spring element 36 is arranged according to Figure 2In the installed state, the first blocking element 11 counteracts the interaction or pressing of the first blocking element 11 with the further blocking element 12. When the steering shaft 5 is rotated back from the end position with the maximum steering rotation angle, the first blocking element 11 moves out of the further blocking element 12 in the axial direction relative to the central longitudinal axis 6. Figure 2 In the installed state, the entrainment device 16 and the spring receiving element 37 are arranged partially in the first blocking element 11 and partially in the transmission element 28 or the second end section 30 .

[0077] In this embodiment, a plurality of sections 39 of the spring receiving element 37 on the one hand and a plurality of sections 40 of the transmission element 28 on the other hand form a restoring device for releasing the interaction of the first blocking element 11 and the further blocking element 12. The restoring device serves to compensate for damage to or failure of the spring element 36. In the event of damage to or failure of the spring element 36, the restoring device ensures that when the steering spindle 5 is rotated back from the end position with the maximum steering rotation angle, the first blocking element 11 moves out of the further blocking element 12 in the axial direction relative to the central longitudinal axis 6.

[0078] Figure 4 Show according to Figure 3 1 is a perspective side view of a portion of an end stop device 10. The rotary device 15 is shown here with the transmission element 28, the rotary elements 25, 26, 27 and the rotary stop 13 in a gathered state.

[0079] Each rotary element 25, 26, 27 has a stop section 41 for cooperating with the directly adjacent rotary element 25, 26, 27 or the directly adjacent rotary stop 13 or the transmission element 28. In this embodiment, the stop section 41 is respectively configured as a double-sided projection. The stop section 41 extends parallel to the central longitudinal axis 6, so that the double-sided projection extends from the corresponding rotary element 25, 26, 27 in two axially opposite directions. For the sake of clarity, not all stop sections 41 are provided with reference numerals.

[0080] The rotation stop 13 has a stop 42 extending in the axial direction relative to the central longitudinal axis 6. The stop 42 faces the rotary element 25. In the stop mode of the rotary device 15 shown here, the stop section 41 of the rotary element 25 hits the stop according to Figure 2 The first rotating element 25 is fixed to the stop 42 of the rotation stop 13 in the installed state. Figure 2 In the installed state, no further rotation in the direction of rotation according to arrow 8 is possible.

[0081] In the stop mode of the rotary device 15 shown here, a stop section 41 of a rotary element 25 , 26 , 27 in each case abuts against an adjacent stop section 41 of a respectively directly adjacent rotary element 25 , 26 , 27 .

[0082] The transmission element 28 or the first end section 29 has a further stop 43. The further stop 43 extends in the axial direction relative to the central longitudinal axis 6. The further stop 43 is facing the rotary element 27. In the stop mode of the rotary device 15 shown here, the further stop 43 strikes the stop section 41 of the rotary element 27.

[0083] Starting from the zero position of the steering shaft 5 (not shown in detail here), due to the rotational movement of the transmission element 28 about the central longitudinal axis 6 , the further stop 43 of the transmission element 28 can strike the stop section 41 of the rotary element 27 , thereby rotating the rotary element 27 together with the transmission element 28 .

[0084] When continuing to rotate in the same rotational direction, for example according to arrow 8, the stop sections 41 of directly adjacent rotating elements 27, 26, 25 thus collide with each other in sequence, so that finally after the stop section 41 of the rotating element 25 collides with the stop 42 of the rotation stop 13, all rotating elements 25, 26, 27 and the transmission element 28 are blocked from continuing to rotate in the same rotational direction.

[0085] Therefore, a maximum steering rotation angle is predetermined by means of the swivel device 15. For example, a maximum steering rotation angle of ±660° can be predetermined starting from the zero position.

[0086] Furthermore, it can be clearly seen here that in the installed state of the rotary device 15, the tongue 31 passes through both the rotary elements 25, 26, 27 and the rotary stop 13, and the latching projection 32 engages behind the rotary stop 13. As a result, the rotary elements 25, 26, 27, the rotary stop 13 and the transmission element 28 are held together in the axial direction relative to the central longitudinal axis 6. This results in a compact, continuous design.

[0087] With regard to the fixing tongues 33, it can be seen that the fixing tongues each have a first latching element 44 on their inner side. The first latching element 44 is each designed as a projection directed radially inwards with respect to the central longitudinal axis. Figure 2 The installation state is embedded in the Figure 3 in the respectively correspondingly constructed second locking elements 35.

[0088] Figure 5 It is shown that when the rotating device 15 is in the rotating mode, Figure 31 is a perspective side view of an end stop 10 of the steering shaft 5. For a better illustration, a partial area of ​​the first blocking element 11 is shown cut away, so that the guide strips 17, 18 of the entraining guide 16 located below this area and the area of ​​the guide slot 19 of the first blocking element 11 can be seen. In addition, a section of the steering shaft 5 is shown, on which the end stop 10 is arranged.

[0089] Firstly, it can be seen that the sections 39, 40 form a restoring device 47. In this case, the transmission element 28 or its section 40 has a first bevel 48 and a second bevel 49. The spring receiving element 37 or the section 40 has a first mating bevel 50 for cooperating with the first bevel 48 and a second mating bevel 51 for cooperating with the second bevel 49. The two bevels 48, 49 and the two mating bevels 50, 51 are each oriented obliquely to the axial extension of the central longitudinal axis 6. In this embodiment, the two bevels 48, 49 are oriented in a V-shaped manner relative to one another. According to this example, the two bevels 48, 49 are components of a V-shaped groove in the second end section 30 of the transmission element 28. In addition, the two mating bevels 50, 51 are also oriented in a V-shaped manner relative to one another. According to this embodiment, the two mating bevels 50, 51 are components of a triangular projection of the spring receiving element 37. In the rotation mode, in this embodiment, the tips of the sections 39, 40 are oriented opposite one another.

[0090] In the rotation mode of the rotating device 15, the first blocking element 11 can be rotated together with the steering shaft 5 in one of the two rotation directions about the central longitudinal axis 6 of the steering shaft 5 by means of the driving device 16 when the steering shaft 5 rotates about the central longitudinal axis 6. The rotating device 15 is in the rotation mode when the current steering rotation angle is between two predetermined maximum steering rotation angles. In this embodiment, the rotation mode is limited to a range of steering angles that are up to 20° smaller than the corresponding maximum steering rotation angle. For example, in the case of a maximum steering rotation angle of 660°, according to this example, the rotating device is in the rotation mode when the steering rotation angle is between ±640°. In the rotation mode of the rotating device 15, the sliding surfaces 21 of the guide webs 17, 18 abut against a section of the mating sliding surface 46 of the first blocking element 11 or the guide slot 19 that faces the other blocking element 12. Based on the Figure 3 Due to the effect of the spring element 36 , which cannot be seen in detail here, the sliding surface 21 and the counter-sliding surface 46 are pressed against one another.

[0091] Corresponding to the end face 20 and the sliding face 21, the mating end face 45 extends perpendicularly to the axial extension of the central longitudinal axis 6 and the mating sliding face 46 extends from the mating end face 45 obliquely to the axial extension of the central longitudinal axis 6. In this embodiment, at least one free gap is formed between the end face 20 and the mating end face 45, regardless of the current steering rotation angle.

[0092] The first blocking element 11, the transmission element 28 and the rotary device 15 with the rotary elements 25, 26, 27 and the rotary stop 13 form a structural unit. The structural unit can be rotated around the central longitudinal axis 6 and / or can be moved in the axial direction of the central longitudinal axis 6 due to the interaction with the entrainment device 16. The end stop device 10 and the structural unit are designed to be tubular. As a result, the steering shaft 5 can extend through the entire end stop device 10.

[0093] Figure 6 Shown in accordance with Figure 4 When the rotating device 15 is in the stop mode, Figure 3 Detail of a perspective side view of an end stop device.

[0094] It can be seen that the sliding surface 20 of the guide strips 17, 18 is configured to be shorter than the mating sliding surface 46 of the first blocking element 11. As a result, the sliding surface 21 and the mating sliding surface 46 can slide on each other according to the length of the two surfaces. This enables the axial movement of the first blocking element 11 or the structural unit to cooperate with the other blocking element 12. In this embodiment, when the steering rotation angle is in the range of +640° to +660° or in the range of -640° to -660°, the rotary device 15 is in the stop mode.

[0095] In the stop mode of the swivel device 15, further rotation of the swivel device and thus of the structural unit about the central longitudinal axis 6 is blocked. When the steering spindle 5 is further rotated in the same direction of rotation, the first blocking element 11 or the structural unit can only be moved in the axial direction relative to the central longitudinal axis 6 by means of the entrainment device 16. As a result, the first blocking element 11 can engage in the further blocking element 12. This exclusively axially oriented movement of the first blocking element 11 is achieved based on the sliding movement of the mating sliding surface 46 of the first blocking element 11 shown here on the sliding surface 21 of the guide web 17 of the entrainment device 16.

[0096] The first blocking element 11 or the guide slot 19 has a mating drive surface 52 for cooperating with the drive surface 22 of the guide link 17. The drive surface 22 and the mating drive surface 52 are oriented parallel to the central longitudinal axis 6, which is not shown in detail here. In the guide slot 19, the mating sliding surface 46 transitions into the mating drive surface 52 in the region facing away from the mating end surface 45.

[0097] Figure 7 The end stop device 10 is shown in a perspective side view, wherein the first blocking element 11 engages in the further blocking element 12 .

[0098] From the basis Figure 5 and 6The state of the end stop device 10 begins when the steering shaft has rotated in the same rotation direction to a position according to Figure 7 position. Since the rotating device 15 is in the stop mode, based on the continued rotation of the driving device 16 and the interaction of the sliding surface 21 and the matching sliding surface 46, the first blocking element 11 moves in the axial direction relative to the central longitudinal axis 6 until the driving surface 22 collides with the matching driving surface 52. At the same time, in this embodiment, the teeth of the first tooth structure 23 collide with the other blocking element 12 in the tooth grooves of the second tooth structure 24. Correspondingly, the teeth of the second tooth structure 24 can collide with the first blocking element 11 in the tooth grooves of the first tooth structure 23. Alternatively, a gap can be left between the teeth and the tooth grooves respectively opposite each other.

[0099] In this embodiment, in the stop mode of the rotary device 15 , the teeth of the first toothing 23 are oriented centrally relative to the tooth gaps of the second toothing 24 . Accordingly, in the stop mode of the rotary device 15 , the teeth of the second toothing 24 are oriented centrally relative to the tooth gaps of the first toothing 23 .

[0100] In this embodiment, the teeth of the first tooth structure 23 and the second tooth structure 24 have different widths. Correspondingly, the tooth gaps of the first tooth structure 23 and the second tooth structure 24 have different widths. Thus, according to this example, the teeth of the two tooth structures 23, 24 continue to not contact each other after the first blocking element 11 moves axially and hits the other blocking element 12.

[0101] As for the return device 47, due to the further rotation of the steering shaft and thus the spring receiving element 37 in combination with the axial displacement of the transmission element 28 connected to the first blocking element 11, the protrusion-shaped section 39 is pressed into one of the two grooves of the section 40 that are configured in a V-shaped manner. In this embodiment, the inclined surfaces 48, 49 and the matching inclined surfaces 50, 51 are configured so that they do not touch each other in the case of an intact spring element 36. This avoids unnecessary friction in normal use. Only when the spring element 36 is damaged or fails, the corresponding inclined surfaces 48, 49 and the assigned matching inclined surfaces 50, 51 come into contact with each other.

[0102] Figure 8 Show according to Figure 7 1 is a partial perspective cross section of the end stop device 10. It can be clearly seen that the driving surface 22 hits the matching driving surface 52. As a result, when the steering shaft 5 continues to rotate in the same rotational direction, the first blocking element 11 is blocked from further axial movement in the direction of the other blocking element 12.

[0103] Fig. 9 A perspective side view of the end stop device 10 is shown in the stop end position assigned to the maximum steering rotation angle. Figure 7 and 8 The end stop device starts from the position of the end stop device and reaches this stop end position when the steering shaft 5 continues to rotate in the same rotational direction.

[0104] Because according to Figure 8 The driving surface 22 abuts against the mating driving surface 52, and the first blocking element 11 cannot move further in the axial direction of the central longitudinal axis 6. Instead, due to a given elasticity and / or tolerance, when the steering shaft 5 and the driving device 16 continue to rotate in the same rotational direction, the first blocking element 11 or the structural unit performs a pure rotational movement around the central longitudinal axis 6.

[0105] This rotational or swiveling movement is limited by the gaps that are produced in the circumferential direction between the axially interengaging teeth of the two tooth structures 23, 24. In the end stop position, at least one blocking surface 53 of the first blocking element 11 strikes against a mating blocking surface 54 of the other blocking element 12 when the maximum steering rotation angle is reached. The blocking surface 53 and the mating blocking surface 54 are oriented parallel to or transversely to the axial extension of the central longitudinal axis 6. In this embodiment, the teeth of the first tooth structure 23 each have a blocking surface 53 on two sides facing away from each other and the teeth of the second tooth structure 24 each have a mating blocking surface 54 on two sides facing away from each other.

[0106] about Figures 5 to 9 The above description relates to Figure 2 The end stop 10 acts in a similar manner in the opposite direction of rotation.

[0107] Reference numerals list

[0108] 1 Steering equipment

[0109] 2 Steering column

[0110] 3 First steering column housing

[0111] 4 Second steering column housing

[0112] 5 Steering axle

[0113] 6 Central longitudinal axis

[0114] 7 Arrow

[0115] 8 Arrow

[0116] 9 Feedback Motor

[0117] 10 End stop device

[0118] 11First blocking element

[0119] 12 Another blocking element

[0120] 13 Rotation stop

[0121] 14 Blocking device

[0122] 15 Rotating device

[0123] 16 Driving device

[0124] 17 Guide tab

[0125] 18 guide tabs

[0126] 19 guide chute

[0127] 20 end face

[0128] 21 Sliding surface

[0129] 22 driving surface

[0130] 23First tooth structure

[0131] 24 Second tooth structure

[0132] 25 Rotating elements

[0133] 26 Rotating elements

[0134] 27 Rotating elements

[0135] 28Transmission elements

[0136] 29 first end section

[0137] 30 Second end section

[0138] 31 Tongue-shaped reed

[0139] 32 Lock protrusion

[0140] 33 Fixed tongue

[0141] 34 fixed accommodation part

[0142] 35 second locking element

[0143] 36 Spring elements

[0144] 37 Spring element receiving portion

[0145] 38 slots

[0146] Section 39

[0147] 40 sections

[0148] 41 stop section

[0149] 42 Stop

[0150] 43 Another stop

[0151] 44 first locking element

[0152] 45 matching end face

[0153] 46 matching sliding surface

[0154] 47 return device

[0155] 48 First Incline

[0156] 49Second Incline

[0157] 50 First matching bevel

[0158] 51 Second matching slope

[0159] 52 matching driving surface

[0160] 53 blocking surface

[0161] 54 matching blocking surface

Claims

1. A steering device, comprising a steering shaft (5) and an end stop device (10) for limiting the steering rotation angle, wherein the end stop device (10) has a first blocking element (11), and the first blocking element (11) can move in the axial direction of the central longitudinal axis (6) of the steering shaft (5) in order to limit the steering rotation angle, and the first blocking element (11) cooperates with another fixed blocking element (12) in order to prevent the steering shaft (5) from rotating about the central longitudinal axis (6) and in two mutually opposite rotation directions (7, 8) of the steering shaft (5), characterized in that The movement of the first blocking element (11) is guided by means of a driver (16), which is connected to the steering shaft (5) in a fixed manner for rotation together with the steering shaft (5).

2. The steering device according to claim 1, characterized in that: The first blocking element (11) is in direct contact with the entrainment device (16), and in particular the entrainment device (16) is constructed in one piece or in multiple pieces.

3. The steering device according to claim 1 or 2, characterized in that: The driving device (16) is connected to the rotating device (15), and the rotating device (15) has at least one rotating element (25, 26, 27), which can rotate around the central longitudinal axis (6) of the steering shaft (5) and / or can rotate together with the steering shaft (5), especially the rotating device (15) has a plurality of annular rotating elements (25, 26, 27), which are arranged in sequence along the axial direction of the central longitudinal axis (6), and each rotating element (25, 26, 27) has at least one stop section (41) for cooperating with a respectively adjacent rotating element (25, 26, 27).

4. Steering device according to any one of the preceding claims, characterized in that The driving device (16) has a plurality of guide webs (17, 18) distributed around its periphery, the guide webs (17, 18) extending parallel to the central longitudinal axis (6) of the steering shaft (5), and the guide webs (17, 18) interact with the guide slot (19) of the first blocking element (11), in particular the guide slot (19) is constructed on the inner side of the first blocking element (11) with a sleeve-like structure.

5. The steering device according to claim 4, characterized in that: The guide webs (17, 18) each have a sliding surface (21) at the end facing the other blocking element (12), and the sliding surface (21) extends obliquely to the axial extension of the central longitudinal axis (6) of the steering shaft (5). In particular, the driving device (16) has a plurality of pairs of guide webs (17, 18), and the two guide webs (17, 18) of each pair of guide webs are respectively constructed in a mirror-symmetrical manner to each other. Preferably, the sliding surfaces (21) of the two guide webs (17, 18) of each pair of guide webs face each other.

6. Steering device according to claims 4 and 5, characterized in that The guide slots (19) of the first blocking element (11) each have a mating sliding surface (46) for cooperating with the sliding surfaces (21) of the guide webs (17, 18).

7. The steering device according to any one of claims 4 to 6, characterized in that The guide webs (17, 18) each have a driving surface (22) on one side of the guide webs (17, 18), and the first blocking element (11) has a mating driving surface (52) for cooperating with the driving surface (22), in particular, the driving surface (22) and the mating driving surface (52) are oriented parallel to the axial extension of the central longitudinal axis (6) of the steering shaft (5).

8. Steering device according to any one of the preceding claims 2 to 7, characterized in that In the rotation mode of the rotating device (15), the first blocking element (11) can be rotated together with the steering shaft (5) in one of two rotation directions (7, 8) around the central longitudinal axis (6) of the steering shaft (5) by means of the driving device (16) when the steering shaft (5) rotates around the central longitudinal axis (6), in particular, in the rotation mode of the rotating device (15), the sliding surface (21) of the guide web (17, 18) abuts against the section of the matching sliding surface (46) of the first blocking element (11) facing the other blocking element (12).

9. The steering device according to claim 8, characterized in that After the transition from the rotation mode of the rotating device (15) to the stop mode, the rotating device (15) is blocked from further rotation around the central longitudinal axis (6) of the steering shaft (5), and the first blocking element (11) can only move in the axial direction relative to the central longitudinal axis (6) in the stop mode of the rotating device (15) by means of the driving device (16) and when the steering shaft (5) continues to rotate in the same rotation direction (7, 8), thereby the first blocking element (11) is embedded in the other blocking element (12), in particular, the axially oriented movement of the first blocking element (11) is realized based on the sliding movement of the matching sliding surface (46) of the first blocking element (11) on the sliding surface (21) of the driving device (16).

10. The steering device according to claim 7, characterized in that At least one matching driving surface (52) of the first blocking element (11) collides with at least one driving surface (22) of the driving device (16) when the first blocking element (11) reaches the maximum axial extension position, and when the steering shaft (5) continues to rotate in the same rotation direction, the first blocking element (11) can only rotate together with the driving device (16) around the central longitudinal axis (6) of the steering shaft (5), preferably, at least one blocking surface (53) of the first blocking element (11) collides with at least one matching blocking surface (54) of the other blocking element (12) when the maximum steering rotation angle is reached, and in particular, the blocking surface (53) and the matching blocking surface (54) are oriented parallel to or obliquely to the axial extension of the central longitudinal axis (6) of the steering shaft (5).

11. The steering device according to any one of claims 2 to 10, characterized in that The rotating device (15) has a rotation stop (13), which limits the rotational movement of the at least one rotating element (25, 26, 27) along the first rotational direction (7) and the second rotational direction (8), in particular, the rotation stop (13) is held in a rotationally fixed manner and / or is configured in an annular shape, preferably, the rotation stop (13) is supported movably in an axial direction relative to the central longitudinal axis (6).

12. The steering device according to any one of claims 2 to 11, characterized in that A transmission element (28) is arranged between the first blocking element (11) and the rotating device (15) and / or the at least one rotating element (25, 26, 27), the transmission element (28) having a first end section (29) and a second end section (30) facing away from the first end section (29), preferably the at least one rotating element (25, 26, 27) is arranged on the first end section (29) and the first blocking element (11) is fixed to the second end section (30), in particular, based on the fixed connection between the second end section (30) and the first blocking element (11), the rotational movement of the steering shaft (5) can be transmitted to the transmission element (28) via the first blocking element (11) and transmitted to the rotating device (15) and / or the at least one rotating element (25, 26, 27) via the transmission element (28).

13. The steering device according to claim 12, characterized in that A spring element (36), in particular a compression spring, is arranged between the driver (16) and the transmission element (28), the spring element (36) being supported on one side on the transmission element (28) and on the other side directly on the driver (16) or on a spring receiving element (37) connected to the driver (16), in particular the spring element (36) counteracting the joint action of the first blocking element (11) and the further blocking element (12).

14. The steering device according to claim 12 or 13, characterized in that The first blocking element (11), the transmission element (28) and the rotating device (15) form a structural unit, which can be rotated around the central longitudinal axis (6) of the steering shaft (5) and / or can be moved in the axial direction of the central longitudinal axis (6) of the steering shaft (5) based on the interaction with the driving device (16), especially the end stop device (10) and / or the structural unit is constructed in a tubular shape.

15. Steering device according to claim 1 and any one of the preceding claims 12 to 14, characterized in that On the one hand, at least one section (39) of the driver (16) or the spring receiving element (37) and on the other hand, at least one section (40) of the transmission element (28) form a return device (47) for releasing the interaction of the first blocking element (11) and the other blocking element (12), in particular, the transmission element (28) has a first inclined surface (48) and a second inclined surface (49), the driver (16) or the spring receiving element (37) has a first mating inclined surface (50) for interaction with the first inclined surface (48) and a second mating inclined surface (51) for interaction with the second inclined surface (49), in particular, the two inclined surfaces (48, 49) and the two mating inclined surfaces (50, 51) are oriented obliquely to the axial extension of the central longitudinal axis (6).

16. Steering device according to any one of the preceding claims, characterized in that The steering shaft (5) extends through an end stop device (10), a first end of the steering shaft (5) is configured for arranging a steering control device, and / or the end stop device (10) is arranged in an especially telescopic steering column (2), preferably a tubular end stop device (10) is arranged between the steering shaft (5) and a tubular steering column housing (3).

17. Steer-by-wire system having a steering device (1) according to any of the preceding claims.

Images