CLUTCH ASSEMBLY

Abstract

A coupling assembly comprises a first coupling assembly and a second coupling assembly. The first and second coupling assemblies share a common drive element, wherein the first coupling assembly couples / decouples the drive element and the first output element, and wherein the second coupling assembly couples / decouples the drive element and the second output element. In the first position, the first coupling assembly decouples the drive element from the first output element, and the second coupling assembly couples the drive element to the second output element. In the second position, the first coupling assembly couples the drive element to the first output element, and the second coupling assembly decouples the drive element from the second output element.

Description

Cross-reference to related registrations

[0001] The present application claims priority from provisional US application No. 63 / 461,866, filed on April 25, 2023. The disclosure content of the aforementioned application is incorporated herein by reference. Background of the invention 1. Field of the invention

[0002] The invention relates generally to an engine drive train or a drive system for a vehicle and in particular to a drive system using a coupling arrangement with a locking element for coupling and uncoupling coupling elements for controlling the power flow or power transmission in a vehicle drive train. 2. Description of the state of the art

[0003] In automotive engineering, vehicle powertrains or drive systems typically include multiple coupling elements. Common powertrains can be configured with concentric or parallel axes. These powertrains often utilize electric motors and controllable or switchable coupling assemblies, such as one-way couplings. These coupling assemblies can be electromagnetically actuated or magnetically controlled.

[0004] These one-way couplings often include first and second elements as well as at least one locking element, for example a strut that moves between an extended position in which the strut extends away from the first element and engages with the second element, and a retracted position in which the strut does not extend away from the first element, thus decoupling the first and second elements from each other.

[0005] Various types of switchable one-way couplings are known, including those that use a switching plate, an electromagnet, and a linear actuator. The foregoing are examples of one-way couplings that can be used in the coupling system disclosed herein. The couplings mentioned above are not exclusive; other switchable or one-way couplings can be used and are known. Summary of the invention

[0006] A coupling assembly for use with a vehicle powertrain comprises a drive element, a first output element, and a second output element. A first coupling assembly selectively couples the drive element to the first output element, and a second coupling assembly selectively couples the drive element to the second output element. The assembly includes an actuating mechanism that moves between a first position and a second position. In the first position, the first coupling assembly decouples the drive element and the first output element and couples the drive element and the second output element. In the second position, the second coupling assembly decouples the drive element and the second output element and couples the drive element and the first output element.

[0007] Further applications of the present invention will become apparent from the detailed description below. It is understood that the detailed description and specific examples, although they represent the preferred embodiment of the invention, are intended for illustrative purposes only and are not meant to limit the scope of protection of the invention. Brief description of the drawings

[0008] The present invention will be better understood with reference to the detailed description and the accompanying drawings. These show: Fig. 1 a perspective sectional view of a coupling arrangement according to an example of the present invention. Fig. 2 a side sectional view of the coupling arrangement Fig. 1. Fig. 3 a perspective view of a component of the coupling assembly Fig. 1. Fig. 4 an enlarged perspective view of part of the component of the coupling assembly made of Fig. 3, shown in the area of ​​circle 4. Fig. 5 a perspective sectional view of a component of the coupling assembly Fig. 1, viewed from the right side. Fig. 6 a perspective sectional view of a component of the coupling assembly Fig. 1, viewed from the left side. Fig. 7 a perspective, partially cropped, expanded view of part of the coupling assembly Fig. 1. the Fig. 8a and Fig. 8b Perspective views of a component of the coupling assembly from Fig. 1. the Fig. 9a and Fig. 9b Perspective views of another component of the coupling assembly from Fig. 1. the Fig. 10a and Fig. 10b perspective views of another component of the coupling arrangement Fig. 1. Fig. 11 a sectional view of one aspect of the coupling arrangement Fig. 1 in the first position. Fig. 12 a sectional view of another aspect of the coupling arrangement Fig. 1 in the first position. Fig. 13 a sectional view showing the aspect of the coupling arrangement Fig. 11 in the second position shows. Fig. 14 a sectional view showing the aspect of the coupling arrangement Fig. 12 in the second position shows. Fig. 15 a schematic side view showing the torque transmission and a power flow path through the coupling arrangement Fig. 1 illustrates. Fig. 16 a schematic side view showing the torque transmission and a further power flow path through the coupling arrangement Fig. 1 illustrates. Fig. 17 a schematic side view showing the torque transmission and a further power flow path through the coupling arrangement Fig. 1 illustrates. Fig. 18 a schematic side view showing the torque transmission and another power flow path through the coupling arrangement Fig. 1 illustrates. Detailed description of preferred embodiments

[0009] The following description of the preferred embodiment(s) is merely exemplary and is in no way intended to limit the invention, its application or possible uses in any way.

[0010] The Fig. Figures 1 to 4 illustrate a coupling arrangement 10 according to at least one embodiment of the present invention. The coupling arrangement 10 acts as a torque transmission mechanism that enables mechanical coupling between paired parts. The coupling arrangement 10 comprises several one-way couplings. Examples of one-way couplings are a passive one-way coupling and a switchable or controllable one-way coupling. A passive one-way coupling or passive strut arrangement comprises a passive or uncontrolled locking element, for example, a strut, arranged in the pocket of the pocket plate. An elastic element or a spring permanently pre-tensions the strut in the pocket plate out of the pocket; the strut is permanently extended. The one-way coupling is passive because the strut is not controlled.With a switchable or controllable one-way coupling, the coupling's state—activated or deactivated, extended or retracted—can be selected or controlled. A switchable or controllable one-way coupling can also be referred to as an active one-way coupling. In its retracted state, a switchable or controllable one-way coupling allows overtaking in both directions, and in its extended state, it acts like a passive one-way coupling. Therefore, a switchable or controllable one-way coupling is active in that the state of the locking element—extended or retracted—can be controlled, and it is passive in that the locking element, when extended, can be overtaken. In one example, these one-way couplings are dynamically controllable couplings.A dynamically controlled clutch refers to a switchable or controllable one-way clutch that acts between two rotating components, for example, both running rings can rotate.

[0011] As shown in the drawings, the coupling assembly 10 comprises a drive shaft or drive element 12 and a first and a second driven element, which are shown as inner and outer concentric shafts 14, 16 and are supported for rotation relative to each other by a bearing 18. The coupling assembly 10 includes a first coupling assembly, generally shown at 20, and a second coupling assembly, generally shown at 22. The pocket plate may include two locking elements—one for clockwise coupling and the other for counterclockwise coupling.During coupling, at least one set of locking elements is controllably extended, so that each locking element of this set is simultaneously in contact with the engagement surfaces of the pockets and notches of the pocket and notch plate, thus coupling the two plates to either transmit torque or, in the case of a brake, to dissipate the torque.

[0012] The first coupling assembly 20 controllably couples the drive element or drive shaft 12 with the first or inner output shaft or the first or inner output element 14 and transmits torque between the drive shaft or drive element 12 and the first or inner output shaft or the first or inner output element 14. The second coupling assembly 22 controllably couples the drive shaft or drive element 12 with the second or outer output shaft or the second or outer output element 16 and transmits torque between the drive shaft or drive element 12 and the second or outer output shaft or the second or outer output element 16.

[0013] The first coupling assembly 20 comprises a drive component, generally shown at 24, which is connected to the drive shaft or drive element 12. The drive component 24 rotates together with the drive shaft or drive element 12 either clockwise or counterclockwise about an axis of rotation 26 of the coupling assembly 10. In one example, the first component 24 comprises a hub 28 and a radially extending disk-shaped or plate-shaped element 30 with a side surface 32. In this example, the side surface 32 extends radially and is axially oriented with respect to the axis of rotation 26. The side surface 32 has a plurality of openings, recesses, or pockets 34 that are connected to the side surface 32. The drive component 24 can be described as a pocket plate because it has a plurality of pockets in one of its surfaces.In one example, the side surface 32 of the disc-shaped or plate-shaped element 30 has recesses or pockets for forward and recesses or pockets for reverse formed in the radially extending disc-shaped or plate-shaped element 30, wherein forward and reverse refer to a direction of travel of the vehicle.

[0014] As shown, the recesses or pockets 34 are arranged circumferentially around the disk-shaped or plate-shaped element 30 relative to the axis of rotation 26 in two concentric circles or rings: an inner ring of pockets 34a and an outer ring of pockets 34b. The outer ring of pockets 34b is radially spaced outwards from the inner ring of pockets 34a, with the inner ring of pockets 34a being part of the first coupling assembly 20 and the outer ring of pockets 34b being part of the second coupling assembly 22. Each pocket of the inner ring of pockets 34a has a pocket shoulder 35a, i.e., a shoulder of the recess, and each pocket of the outer ring of pockets 34b has a pocket shoulder 35b, i.e., a shoulder of the recess.

[0015] Each pocket 34 contains a locking element or strut, generally specified at 36. The struts 36 and corresponding pockets 34 are designed differently depending on their respective location, inner pockets 34a or outer pockets 34b, and the direction of torque transmission. Furthermore, the locking elements or struts 36 are designed based on the direction of rotation.

[0016] The Fig. Figures 8a to 10b illustrate a locking element or strut 36 for use with the coupling arrangement 10. Generally, each locking element or strut 36 has a first end surface 38 at a free or extended end 40 of the strut 36, and a second end surface 42 at a shoulder end 44 of the strut 36, diametrically opposite the first end surface 38. The strut has a top surface 46 and a bottom surface 48, which are connected to each other by longitudinal side surfaces 50. An elongated main body part 52 extends between the respective end surfaces 38 and 42.

[0017] Each locking element or strut 36 also has projecting inner and outer pivot pins or pivot elements 54, 56 that extend laterally from the main body part 52. The inner pivot pin 54 is located closer to the axis of rotation 26 when the locking element or strut 36 is arranged in the pocket 34. The pivot elements 54, 56 allow the locking element or strut 36 to pivot about a pivot axis 58 of the locking element or strut 36 that intersects the pivot elements 54, 56. The pivot axis 58 extends transversely to a longitudinal axis of the main body part 52 of the strut 36. The pivot axis 58 separates the free or extended end 40 and the shoulder end 44. The free or extended end 40 lies on one side and the shoulder end 44 lies on the other side of the pivot axis 58.The first end face 38 of the locking element or strut 36 pivots outwards in an extended or engaged position and extends beyond the side face 32 of the disc-shaped or plate-shaped section 30. The locking element or strut 36 moves between an engaged or coupled position, in which it extends beyond the side face of the disc-shaped or plate-shaped section 30, and a disengaged or uncoupling position, in which it is located in the recess or pocket 34. One-way torque transmission occurs in the engaged position of the locking elements or struts 36.

[0018] The first coupling assembly 20 comprises inner struts 36a arranged in the inner pockets 34a. The outer pivot pin 58 is mounted in a bearing 57 located between the inner component 24 and the retaining block or element 86. The inner struts 36a have a laterally extending projection or paddle section 80 and an upright pin or stud 82. A preload or return element 84, for example, a spring on the pin or stud 82, exerts an influence or force between a retaining or block element 86, which is attached to the disc-shaped or plate-shaped section 30 of the first component 24, and the paddle section 80, to press against the inner strut 36a and move it accordingly into the pocket 34a. As shown, the laterally extending projection or paddle section 80 is offset from the main body part 52 of the strut 36a.It extends longitudinally beyond the first end face 42 at the free or extended end 40. The pre-tensioning or restoring element 84 is held back by the retaining block or restoring element 86 and counteracts it. The paddle section 80 and the pre-tensioning or restoring element 84 are located on the side of the free or extended end 40 of the strut 36. They are situated between the pivot axis 58 and the free or extended end 40. The inner component 24 comprises struts 36a, which are arranged opposite to each other to transmit torque in both directions of rotation, clockwise and counterclockwise. The drawings of the . Fig. Figures 8a-8b and 9a-9b show that the struts 36a have a slightly modified configuration depending on the direction of torque transmission, with the extending projection or paddle section 80 being located on the radially outer side of the struts 36a, i.e., the side of the outer pivot pin 56. As shown, the laterally extending projection or paddle section 80 extends radially outward from the main body part 52 and remains below the retaining block or element 86. In the first position, the strut 36a is held in the pocket 34a by the force of the preload or return element 84. When the struts 36a remain in the inner pockets 34a, the struts 36a are not extended, the drive component 24 is not coupled to the first or inner output component 60, and no torque is transmitted between the two components.

[0019] The second coupling assembly 22 comprises outer struts 36b arranged in the outer pockets 34b. The outer pivot pin 58 is mounted in a bearing 57 located between the inner component 24 and the retaining block or element 86. The outer struts 36b have a laterally and longitudinally extending projection or paddle section 88. As shown, the laterally and longitudinally extending projection or paddle section 88 is offset from the main body part 52 of the strut 36b. It extends longitudinally beyond the second end surface 42 at the shoulder end 44. A preloading or extension element 90, for example a spring, exerts an influence or force between the disc-shaped or plate-shaped section 30 of the first component 24 and the underside 48 of the strut 36.The preload or extension element 90 rests on the underside 48 between the pivot axis 58 and the first end face 38 at the free or extended end 40. The preload or extension element 90 pushes or forces against the outer strut 36b and accordingly moves the outer strut 36b out of the pocket 34b into an extended position. As shown, the laterally extending projection or paddle section 88 is offset laterally and longitudinally from the main body part 52 of the strut 36b and is held together with the outer actuating element 118, the spring 118, and moves under a retaining block or element 86. As shown in the present example, the strut 36b transmits torque in one direction of rotation, for example, counterclockwise. A second outer strut 36b could be added to transmit torque in the second direction of rotation, for example, clockwise.Such an arrangement could resemble the inner ring of pockets 34a and struts 36a. In the first position, the strut 36b is forced out of the pocket 34b and beyond the side surface 32 of the plate 30 by the force of the preload or extension element 90. Since the struts 36b extend out of the outer ring of pockets 34b, the drive component 24 is coupled to the second or outer output component 70, and torque is transmitted between the two components.

[0020] The Fig. Figures 5 to 7 show that the first or inner output component 60 of the first coupling assembly 20 is connected to the first or inner output shaft or the first or inner output element 14. The first or inner output component 60 rotates together with the first or inner output shaft or the first or inner output element 14 either clockwise or counterclockwise about the axis of rotation 26 of the coupling assembly 10. In one example, the first or inner output component 60 comprises a hub 62 and a radially extending disk-shaped or plate-shaped element 64 with a side surface 66. In one example, the side surface 66 extends radially and is axially oriented with respect to the axis of rotation 26.The first or inner output component 60 has a plurality of recesses or notches 68 formed in the side surface 66 of the radially extending disk-shaped or plate-shaped element 64; each of the recesses or notches 68 has an engagement side or surface 68a. The notches 68 are spaced circumferentially around the side surface 66. The first or inner output component 60 can be referred to as a notched plate, for example, an inner notched plate, since it has a plurality of recesses or notches on an outer surface.

[0021] In the first coupling assembly 20, the side surface 66 of the radially extending disc-shaped or plate-shaped element 64 of the first or inner output component 60 is located adjacent to the side surface 32 of the disc-shaped or plate-shaped section 30 of the drive component 24. The notches 68 are aligned with the inner ring of pockets 34a, such that the extension or protrusion of the struts 36a beyond the side surface 32 of the disc-shaped or plate-shaped section 30 of the drive component 24 causes the struts 36a to engage the engagement sides or surfaces 68a of the notches 68 in the side surface 66 of the radially extending disc-shaped or plate-shaped element 64, thereby enabling torque transmission between the drive component 24 and the first or inner output component 60.When the struts 36 are not extended, they remain in the pockets 34 and do not engage the engagement surfaces 68a of the notches 68 in the side surface 66 of the radially extending disc-shaped or plate-shaped element 64.

[0022] Similarly, the second coupling assembly 22 comprises a second or outer output component 70 connected to the second or outer output shaft or second or outer output element 16. The second or outer output component 70 rotates together with the second or outer output shaft or second or outer output element 16 either clockwise or counterclockwise about the axis of rotation 26 of the coupling assembly 10. In one example, the second or outer output component 70 comprises a hub 72 and a radially extending disk-shaped or plate-shaped element 74 having a side surface 76. In one example, the side surface 76 extends radially and is axially oriented with respect to the axis of rotation 26.The second or outer output component 70 comprises a plurality of recesses or notches 78 formed in the side surface 76 of the radially extending disk-shaped or plate-shaped element 74. Each of the recesses or notches 78 has an engagement side or surface 78a. The notches 78 are spaced circumferentially around the side surface 76. The second or outer output component 70 can also be referred to as a notched plate, for example, an outer notched plate, because it has a plurality of recesses or notches on an outer surface.

[0023] In the second coupling assembly 22, the side surface 76 of the radially extending disc-shaped or plate-shaped element 74 of the second or outer output component 70 is arranged adjacent to the side surface 32 of the disc-shaped or plate-shaped section 30 of the drive component 24. The notches 78 are aligned with the outer ring of pockets 34b, such that the extension or protrusion of the struts 36b beyond the side surface 32 of the disc-shaped or plate-shaped section 30 of the drive component 24 causes the struts 36b to engage the engagement sides or surfaces 78a of the notches 78 in the side surface 76 of the radially extending disc-shaped or plate-shaped element 74, thereby enabling torque transmission between the drive component 24 and the second or outer output component 70.When the struts 36b are not extended, they remain in the pockets 34b and do not engage in the notches 78 on the side surface 76 of the radially extending disc-shaped or plate-shaped element 74.

[0024] The coupling arrangement 10 comprises an actuating system or actuating mechanism in the form of a linear motor or linear actuator 100. The linear actuator 100 comprises a stator 102 and a translator 104. The stator 102 is stationary, for example, attached to a housing (not shown). The stator 102 comprises two copper wire induction coils 106. Steel plates 108 enclose the stator induction coils 106. The stator coils 106 are wound in series with opposite polarity to each other, anti-series.

[0025] The translator 104 comprises an annular ring of segmented permanent magnets 110 and steel plates 112. The translator 104 is connected to the drive element 12 and rotates with it, moving linearly between lateral axial positions. The linear actuator 100 actively controls an operating mode of the coupling arrangement 10 by generating an electromagnetic force with the stator 102, which interacts with the translator 104, causing the translator to move axially and reciprocate in the axial direction on the drive component 24. The linear actuator 100 is a two-position actuator, with the stator 102 having two induction coils 106. Actuators with more positions can also be used, for example, three- or four-position actuators.

[0026] In one example, the linear actuator 100 comprises a radially extending actuating plate 114. The actuating plate 114 includes inner and outer actuating elements 116, 118. In the disclosed example, the inner actuating element 116 is associated with the first coupling assembly 20, and the outer actuating element 118 is associated with the second coupling assembly 22. During axial movement of the translator 104 and corresponding to the actuating plate 114, a force is exerted on the actuating elements 116, 118, which in turn act on the struts 36a, 36b. In one example, the actuating elements are coil springs which are received in the channels 120a, 120b to provide an actuating force to move the struts 36a, 36b between their engaged, i.e. extended, position and the disengaged, i.e. not extended, position.Besides springs, other actuators can also provide the actuating forces. These forces can also be provided by means of pressurized fluids.

[0027] The linear actuator 100 moves, via the translator 104, the actuating plate 114 between the first and second positions. Fig. Figures 11-12 illustrate the first position of the actuating plate 114 and the position of the corresponding inner and outer struts 36a, 36b. Fig. Figures 13-14 illustrate the second position of the actuating plate 114 and the position of the corresponding inner and outer struts 36a, 36b. As shown, a movement of the actuating plate 114 from the first position to the second position, i.e., from the to the Fig. Position shown in 11-12 in the Fig. Figures 13-14 show that the outer actuating element 118 acts on one end of the strut 36b, overcomes the force of the pre-tensioning or extension element 90, and pivots the strut 36b inwards, into the pocket 34b, thereby bringing the strut 36b into a non-extended, i.e., disengaged, position. Similarly, movement of the actuating plate 114 from the first position to the second position causes the inner actuating element 116 to act on one end of the strut 36a, overcome the force of the pre-tensioning or return element 84, and pivot the strut 36a outwards, out of the pocket 34a, thereby bringing the strut 36a into an extended, i.e., engaged, position.

[0028] As shown, in the first position the inner set of struts 36a is located in the inner ring of pockets 34a or remains in the pockets 34, and the outer set of struts 36b is extended, extending outwards from the pockets 34 of the outer ring of pockets 34b, and engages the second or outer output component 70. In the first position, the actuating elements 116, 118, which are attached to the actuating plate 114, do not act on their respective struts 36a, 36b. The preload or return element 84 acts on the inner struts 36a and holds them in the pockets 34a in a retracted and disengaged position, whereby the struts 36a do not engage with the first or inner output component 60 and no torque is transmitted between the inner component 24 and the first or inner output component 60.As regards the outer set of struts 36b, the preload or extension element 90 acts on the strut 36b to force the strut 36b outwards into an extended, engaged position, whereby the strut 36b engages in the second or outer output component 70 and torque is transmitted between the inner component 24 and the second or outer output component 70.

[0029] When the translator 104 is moved into the second position, closer to the hub 28 of the inner component 24, the force applied by the inner and outer springs or actuating elements 116, 118 acts on the inner and outer struts 36a, 36b, respectively. The inner actuating element 116 acts on the inner strut 36a, pivoting it outwards into an extended, engaged position with the first or inner output component 60, transmitting torque between the drive component 24 and the first or inner output component 60. The outer actuating element 118 acts on the outer strut 36b, pivoting it inwards into a retracted, disengaged position in the pocket 34b, transmitting no torque between the drive component 24 and the second or outer output component 70.When the actuating plate 114 moves into the second position, the outer struts 36b disengage and the inner struts 36a engage. Depending on the position of the linear actuator 100 and the corresponding translator 104, torque is transmitted from the drive component 24 either to the first or inner output component 60 or to the second or outer output component 70, thereby transmitting torque from the drive element 12 to one of the output elements 14, 16, the inner or the outer one.

[0030] In one example, the coupling arrangement 10 represents a mechanism for coupling a drive element 12 via a common drive component 24 to at least one of two output elements 14 by means of two output components 60, 70. The torque supplied by the drive element 12 can be transmitted separately to at least one of the two output elements 14, 16 by using a single linear motor or a single linear actuator with two positions 100.While the present example separately discloses the coupling of the drive element 14 with the first and second output elements 14, 16, the strut structure of the second coupling assembly 22 could also be replaced by the strut structure of the first coupling assembly 20. In this case, upon independent actuation of either the first or second coupling assembly 20, the corresponding set of struts extends to couple or connect the drive component 24 with one of the corresponding output components 60, 70, the inner or the outer. Depending on the selected coupling assembly, the inner and outer output elements 14, 16 can each rotate with the drive element 12 in both directions, clockwise and counterclockwise.

[0031] The actuating plate 114 moves axially between a first and a second position, the second position being closer to the drive component 24. The coupling arrangement 10 provides a mechanism to drive the inner and outer output elements 14, 16 independently from a single drive element, based on the position of the actuator 100. For example, the drive element 12 drives one of the output elements 14, 16, either the inner or the outer one, while the other element rotates freely or overtakes. In one example, the linear motor or linear actuator 100 acts as a two-position actuator. In the first position, torque is transmitted from the drive component 24 to the second or outer output component 70, but not to the first or inner output component 60.In the second position, torque is transmitted from the drive component 24 to the first or inner output component 60, but not to the second or outer component 70. In another example, a three-position actuator could be used. By changing the length of the inner and outer actuating elements 116, 118, or—if an actuating spring is used—the spring constant, a third position of the coupling assembly is provided. For example, a three-position actuator provides an intermediate or neutral position in which neither of the struts 36a, 36b is extended or engaged.

[0032] The coupling assembly 10 transmits torque between the power flow components connected via the first and second coupling assemblies 20, 22. The direction of rotation and the torque transmitted to the inner and outer output elements 14, 16 can be used in various ways. For example, each of the output elements 14, 16, the inner and the outer, can supply or transmit power to different components, such as a forward gear set, a reverse gear set, a front-wheel drive, a rear-wheel drive, a gear set for a lower gear ratio range, and one for a higher gear ratio range.

[0033] For example, as in the Fig. As shown in Figures 15 to 18, the aforementioned coupling arrangement 10 can be used with an electromagnetic friction clutch (EMC) 122 to synchronize the speed and direction of rotation of the drive element 12 and the second or outer driven element 16. The drive component 24 connected to the drive element 12 has a cup-shaped body with a cylindrical drum section 124 connected to the disc-shaped or plate-shaped section 30. The cylindrical drum section 124 extends longitudinally in the direction of the axis of rotation 26.

[0034] The cylindrical drum section 124 has an inner circumferential surface 126 and an outer circumferential surface 128. The inner circumferential surface 126 has a plurality of alternating grooves 130 and projections 132, which form a tooth profile that meshes with corresponding grooves and projections in an outer circumferential surface 140 of the ERK 122, thereby enabling torque transmission between the drive component 24 and the ERK 122.

[0035] The ERK 122 uses friction elements and comprises a friction assembly 142 with drive friction discs 144 connected to the drum section 124, and output friction discs 146 connected to the second or outer output component 70. An ERK translator 148 comprises a translator piston 150, a translator plate 152, and a stator 154 with a stator core 156 and a stator coil 158. The ERK stator 154 is fixed in its position, and the ERK translator 148 is movable relative to it. When the ERK translator 148 moves toward the ERK stator 154, the friction discs 144 and 146 of the friction assembly 142 are pressed together.

[0036] The friction assembly 142 comprises a combination of friction discs 144 and 146 that slide axially through an inner and an outer toothed profile. When the discs 144 and 146 are pressed together, torque is transmitted by the friction between them, and the second or outer output component 70 rotates together with the input component 24.

[0037] The ERK (Electronic Ratio Control) serves to synchronize the speed or angular velocity of the drive component 24 and the second or outer output component 70. During the speed synchronization process, the ERK translator 148 exerts a force on the friction pack 142, pressing the inner and outer friction discs 144, 146 of the friction pack 142 together. The ERK friction pack 142 transmits the dynamic torque between the drive component 24 and the second or outer output component 70 during the speed synchronization process.

[0038] When the rotational speed or angular velocity of the drive component 24 and the second or outer output component 70 are synchronized, they rotate at virtually the same angular velocity. Once the drive component 24 and the second or outer output component 70 are synchronized, the struts 36b of the drive component 24 are actuated and engage in the outer ring of pockets 34b. The engaged struts 36b couple the pocket plate or drive component 24 and the notched plate or second or outer output component 70 and transmit torque between the drive element 12 and the second or outer output element 16 via the engaged pocket plate or drive component 24 and the notched plate or second or outer output component 70.

[0039] Since the first and second coupling assemblies 20, 22 and the ERK 122 are electromagnetically actuated, the coupling assembly 10 represents a fully electromagnetically actuated coupling system. The coupling assembly 10 is electromagnetic and does not depend on a hydraulic actuator. A fully electric system that does not depend on hydraulic actuation can be smaller, lighter, cleaner, and faster in terms of response time. The coupling assembly 10 can engage at high speed differentials via the ERK 122; it is capable of transmitting high static torque via the first and second coupling assemblies 20, 22; it is controllable and can therefore provide a linear response for dynamic torque by modulating the electrical current.The first and second coupling assemblies 20, 22 do not require a permanent supply of electrical current to remain coupled for the transmission of torque, as the permanent state of coupling can be enabled by a magnetic or mechanical locking mechanism.

[0040] While the coupling arrangement 10 uses an ERK 122 to synchronize the speed between the drive component 24 and the second or outer output component 70, a similar arrangement can also synchronize the speed between the drive component 24 and the first, inner output component 60. Furthermore, other speed synchronization systems can also be used, such as (insert various systems).

[0041] The Fig. Figures 15 to 18 illustrate a force or torque path through the coupling arrangement 10 based on the position of the translator 104 of the linear actuator 100 of the first and second coupling assemblies 20, 22 and on the position of the translator 148 of the ERK 122. As shown in the drawings, the force or torque path changes depending on the positions of the respective translators 104 and 148.

[0042] Fig. Figure 15 illustrates the force or torque path between the drive component 24 and the first and second output components 60, 70, with both the linear actuator 100 and the ERK in the first position. In the first position, the translator 104 of the linear actuator 100 and the actuating plate 114 are in their furthest right position, with the actuating plate 114 being closer to the disc-shaped or plate-shaped section 30. In the first position, the translator 148 of the ERK 122 is in its furthest left position, with the friction discs in an uncompressed position and transmitting no torque. With the linear actuator 100 in the first position, the struts 36a of the first coupling assembly 20 are extended, and the struts 36b of the second coupling assembly 22 are not extended.In the first position, the first coupling assembly 20 transmits torque via the extended struts 36a from the drive component 24 to the first or inner output component 60, as shown by the thick solid line 170. As shown, torque is transmitted directly from the drive element 12 to the first or inner output element 14, as a direct drive.

[0043] Fig. Figure 16 illustrates the force or torque path between the drive component 24 and the first and second output components 60, 70, with the linear actuator 100 in the first position and the ERK 122 in the second position. In the second position, the ERK translator 148 moves to its furthest right position, with the translator plate 152 adjacent to the stator 154. In the furthest right position, the ERK translator 148 compresses the friction pack 142, with the ERK 122 transmitting torque from the drive component 24 to the second or outer output component 70, as shown by the thick dashed line 172. When the ERK is actuated, torque is transmitted to the second or outer output component 70, and the second or outer output component 70 begins to rotate.

[0044] Fig. Figure 17 illustrates the force or torque path between the drive component 24 and the first and second output components 60, 70, with the linear actuator 100 in the second position and with the ERK 122 in the second position. In the second position, the translator 104 and the actuating plate 114 of the linear actuator 100 are in the left position, with the actuating plate 114 being further away from the disc-shaped or plate-shaped section 30. With the linear actuator 100 in the second position, the struts 36a of the first coupling assembly 20 are not extended, and the struts 36b of the second coupling assembly 22 are extended. In the second position, the second coupling assembly 22 transmits torque via the extended struts 36b from the drive component 24 to the second or outer output component 70, as shown by the thick solid line 174.Since the ERK 122 is still actuated, torque is still being transmitted via the ERK 122 to the second or outer output component 70, as shown by the thick dashed line 172.

[0045] Fig.Figure 18 illustrates the force or torque path between the drive component 24 and the first and second output components 60, 70, with the linear actuator 100 in the second position and the ERK 122 in the first position. In the second position, the second coupling assembly 22 transmits torque via the extended struts 36b from the drive component 24 to the second or outer output component 70, as shown by the thick solid line 174. In the first position, the friction pack 142 of the ERK 122 is in its far left, uncompressed position and transmits no torque. The only force or torque path runs from the drive component 24 to the second or outer output component 70, as shown by the thick solid line 174.

[0046] In one example, the ERK 122 is used as a synchronization mechanism to synchronize the rotational speed of the second or outer output component 70 with that of the input component 24 before the linear actuator 100 is moved into the second position.

[0047] The description of the invention is merely exemplary. Variations that do not deviate from the core of the invention are therefore included in the scope of protection. Such variations are not to be considered a deviation from the inventive idea and from the scope of protection of the invention. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 63 / 461,866

[0001]

Claims

[1] Coupling assembly for use with a vehicle drivetrain, comprising: a drive element, a first drive element, a second drive element, a drive component that is connected to the drive element, a first output component connected to the first output element, a second output component connected to the second output element, wherein the drive component comprises a plurality of recesses arranged in two concentric rings circumferentially on the drive component, an inner ring and an outer ring, wherein the outer ring is radially spaced outwards from the inner ring, a first coupling assembly which optionally couples the drive component with the first output component, which is connected to the first output element, a second coupling assembly which optionally couples the drive component with the second output component, which is connected to the second output element, and an actuating mechanism that is movable between a first position and a second position, wherein in the first position the first coupling assembly decouples the drive element from the first output element and couples the drive element to the second output element, and in the second position the second coupling assembly decouples the drive element from the second output element and couples the drive element to the first output element. [2] Coupling arrangement according to claim 1, wherein: the first coupling assembly comprises the inner ring of recesses, and The second coupling assembly comprises the outer ring of recesses. [3] Coupling arrangement according to claim 1, wherein: the first abrasion component has a surface, wherein the surface comprises a plurality of recesses, and the second abrasion component has a surface, the surface comprising a plurality of recesses. [4] Coupling arrangement according to claim 3, wherein: the first coupling assembly comprises a locking element, wherein the locking element is located in a recess in the inner ring of recesses, wherein the locking element is movable between an extended and a retracted position, and the second coupling assembly comprises a locking element, wherein the locking element is located in a recess in the outer ring of recesses, wherein the locking element is movable between an extended and a non-extended position. [5] Coupling arrangement according to claim 4, comprising: the locking element of the first coupling assembly, with a pivot axis, and the first coupling assembly comprising an actuating element and a return element, wherein both the actuating element and the return element act on the locking element on the same side of the pivot axis. [6] Coupling arrangement according to claim 5, comprising: the locking element of the second coupling assembly, with a pivot axis, and the second coupling assembly comprising an actuating element and a return element, wherein the actuating element and the return element act on the locking element on opposite sides of the pivot axis. [7] Coupling assembly for use with a vehicle drivetrain, comprising: a drive component that can rotate about a longitudinal axis, wherein the drive component comprises a plurality of recesses, a first output component that can rotate about the longitudinal axis, wherein the first output component comprises a plurality of recesses, a second output component that can rotate about the longitudinal axis, wherein the second output component comprises a plurality of recesses, a first set of locking elements, each locking element of the first set having a first end and a second end, pivot pins (54, 56) extending transversely to a longitudinal axis of the locking element and defining a pivot axis, the pivot axis being arranged between the first and second ends (40, 44), the locking element pivoting about the pivot axis, and having a laterally extending projection at the first end of the locking element, a second set of locking elements, each locking element of the second set having a first end and a second end, pivot pins (54, 56) extending transversely to a longitudinal axis of the locking element and defining a pivot axis, the pivot axis being arranged between the first and second ends (40, 44), the locking element pivoting about the pivot axis, and having a laterally extending projection at the second end of the locking element, and an actuating mechanism that is movable between a first position and a second position, wherein in the first position the first set of locking elements is not extended, thereby decoupling the drive component and the first driven component, and the second set of locking elements is extended, thereby coupling the drive component and the second driven component, and wherein in the second position the first set of locking elements is extended, thereby coupling the drive component and the second driven component, and the second set of locking elements is not extended, thereby decoupling the drive component and the first driven component. [8] Coupling arrangement according to claim 7, wherein: the drive component has a radially extending and axially directed surface, wherein the recesses of the drive component are arranged on the surface in concentric circles, the concentric circles being arranged as an inner ring and an outer ring, the first drive component has a radially extending and axially directed surface, wherein the recesses of the first drive component are arranged in a circle on the surface, the second output component has a radially extending and axially directed surface, wherein the recesses of the second output component are arranged in a circle on the surface, and the recesses of the first output component are adjacent to the inner ring with recesses of the drive component, and the recesses of the second output component are adjacent to the outer ring with recesses of the drive component. [9] Coupling arrangement according to claim 7, wherein: the laterally extending projection at the first end of the locking element extends longitudinally beyond the first end of the locking element. [10] Coupling arrangement according to claim 7, wherein: the laterally extending projection at the first end of the locking element extends beyond a side surface of the locking element. [11] Coupling arrangement according to claim 7, comprising: a preload element between the laterally extending projection at the first end of the locking element and the drive component, wherein the preload element is in a positional relationship to the underside of the locking element without touching it. [12] Coupling arrangement according to claim 7, comprising: an actuating element that engages the locking element of the first set of locking elements between the pivot axis and the first end. [13] Coupling arrangement according to claim 7, comprising: a preloading element that engages the locking element of the first set of locking elements between the pivot axis and the first end, and an actuating element that engages the locking element of the first set of locking elements between the pivot axis and the first end. [14] Coupling arrangement according to claim 13, comprising: a preloading element that engages the locking element of the second set of locking elements between the pivot axis and the first end, and an actuating element that engages the locking element of the second set of locking elements between the pivot axis and the second end. [15] Coupling arrangement according to claim 7, wherein: the first set of locking elements includes opposing locking elements, which are designed to functionally couple the drive component with the first output component in both directions of rotation. [16] Coupling arrangement according to claim 7, wherein: the second set of locking elements includes opposing locking elements, which are designed to functionally couple the drive component with the second output component in both directions of rotation. [17] Coupling arrangement according to claim 7, wherein: the actuation mechanism includes a translator that is ready for operation in order to move, the movement of the translator acts on both the first set of locking elements and the second set of locking elements. [18] Coupling arrangement comprising: a drive element mounted for rotation about a longitudinal axis, wherein the drive element has a side surface extending transversely to the longitudinal axis, the side surface having a plurality of recesses that are connected to the side surface of the drive element, a first output element which is mounted for rotation about the longitudinal axis, wherein the first output element has a side surface which extends transversely to the longitudinal axis and faces the side surface of the drive element, wherein the first output element has a plurality of recesses which are connected to the side surface of the first output element, a second output element which is mounted for rotation about the longitudinal axis, wherein the second output element has a side surface which extends transversely to the longitudinal axis and faces the side surface of the drive element, wherein the second output element has a plurality of recesses which are connected to the side surface of the second output element, a first coupling assembly that selectively couples the drive element to the first output element, wherein the first coupling assembly comprises a locking element that is movable between an extended and a retracted position, the locking element having a first end, a second end and a pivot axis between the first end and the second end, a preload element and an actuating element, wherein both the preload element and the actuating element engage the locking element between the first end and the pivot axis, and a second coupling assembly that selectively couples the drive element with the second output element, wherein the second coupling assembly comprises a locking element that is movable between an extended and a retracted position, wherein the locking element has a first end, a second end and a pivot axis between the first end and the second end, a preload element and an actuating element, wherein the preload element engages the locking element between the first end and the pivot axis, and the actuating element engages the locking element between the second end and the pivot axis, wherein the first coupling assembly operates independently of the second coupling assembly, and wherein the second coupling assembly operates independently of the first coupling assembly. [19] Coupling arrangement according to claim 18, wherein: the locking element of the first coupling assembly comprises a laterally extending projection at the first end of the locking element, and The locking element of the second coupling assembly includes a projection extending from the second end of the locking element. [20] Coupling arrangement according to claim 19, wherein: the preloading element of the first coupling assembly engages the laterally extending projection at the first end of the locking element of the first coupling assembly, and the actuating element of the second coupling assembly engages the projection that extends from the second end of the locking element of the second coupling assembly.

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