DE102017214933A1 - Switchable detent finger clutch with features to prevent hydraulic application - Google Patents

Abstract

An overrunning clutch having an anti-exhaust feature operable to counteract hydraulic forces acting on the detent finger to assist in maintaining the detent finger in a non-deployed position.

Description

FIELD OF THE INVENTION

The present disclosure relates generally to overrunning clutch devices, such as overrunning clutches or brakes, and more particularly to switchable one-way clutch (SOWC) devices and / or electronically controlled one-way clutch devices (EOWC devices, EOWC - Electronically-Controlled One-Way Coupling) with an ausbringbaren latching finger and an arrangement for preventing inadvertent deployment of the latching finger.

BACKGROUND OF THE INVENTION

This section provides background information pertaining to the present disclosure, which is not necessarily the prior art.

Automatic transmissions provide multiple forward and reverse ratios or gear ratios by selectively actuating one or more clutches and / or brakes to establish a torque transmitting drive connection between a transmission input and a transmission output for supplying motive power (ie, drive torque) from a powertrain to a driveline in one Motor vehicle ready. A type of brake or clutch common to automatic transmissions is an overrunning clutch device, commonly referred to as a one-way clutch (OWC), which freewheels when one of its rings (in a radial clutch configuration) or one of its traction sheaves (at axial Clutch configurations) in a first (ie freewheeling) direction with respect to the other ring or the other traction sheave, and in a second (that is to say blocking) direction or locks. Typically, a locking member, such as a detent finger associated with the one-way clutch, is movable between an unloaded position to establish a freewheeling mode and a deployed position to establish a locked mode. The catch finger is commonly biased in one of its two positions. Such conventional one-way clutches do not provide independent control over their modes of operation, that is, whether they lock in two directions or are freewheeling, and are commonly referred to as passive one-way clutches. Thus, simple one-way clutches provide the "locked" mode in one direction of rotation and the "free-wheel" mode in the opposite direction based on the direction in which the drive torque is applied to the input ring or traction sheave.

However, there are requirements in modern automatic transmissions where a "controllable" overrunning clutch device, commonly referred to as either a switchable one-way clutch (SOWC) or electrically-controlled overrun clutch (EOWC - Electrically-Controlled One-Way Clutch) is referred to Provision of additional operating modes can be selectively controlled. In particular, a controllable overrunning clutch may further be capable of generating a coasting mode in both directions of rotation until a command signal (that is, from the transmission control) causes a power operated actuator to shift the clutch device into its locked mode. Thus, a controllable overrunning clutch may be capable of providing a drive connection between an input member and an output member in one or both directions of rotation, and may be further operated to be free in one or both directions. Furthermore, it is known in modern automatic transmissions to integrate a passive one-way clutch and a controllable overrunning clutch to a combined clutch device, which is commonly referred to as a bidirectional clutch.

Development tests of controllable one-way clutches identified at least one problem that needed to be addressed. In particular, under certain operating conditions of the automatic transmission, excessive oil levels are generated in the controllable one-way clutches near the deployable detent fingers, which can potentially result in unintentional "hydraulic deployment" of the detent finger. Accidental hydraulic deployment is a condition in which the detent finger is moved from its unexposed position to its deployed position, independently of the actuation of the power-operated actuator, due to a pressure gradient acting thereon. This pressure gradient, together with fluid dynamics connected to the fluid flow around the coupling components, results in a force vector acting on an end portion of the detent finger. As the magnitude of this hydraulic force acting on the end portion of the detent finger ultimately overcomes the biasing force exerted by the detent finger return spring on the detent finger, resulting in unintentional partial or complete deployment of the detent finger. Such inadvertent hydraulic deployment may cause the latch finger to "ratchet" against the inner ring / traction sheave resulting in premature failure of the detent finger system and / or the armature actuated actuator due to fatigue. Furthermore, the impact may cause the armature / detent finger configuration to deform, thus resulting in a loss of the primary detent function, since the detent finger may have only partial applicability.

Accordingly, there is a need for further development of new and improved overrunning clutch devices that advance the art and provide improved functionality.

SUMMARY OF THE INVENTION

This section provides a general summary of the disclosure and is not to be interpreted as a complete and comprehensive presentation of all of its aspects, features, and advantages.

According to one aspect of the present disclosure, there is provided a one-way clutch assembly adapted for use in a power transmission device.

Another aspect of the present disclosure is to configure the one-way clutch assembly to include a clutch module having a first component and a second component arranged for rotation with respect to the first component and a detent finger module having at least one detent finger for movement relative to the second component formed ratchet teeth between a non-deployed / unlocked position and a deployed / locked position is pivotally mounted to contain.

As a related aspect, the overrunning clutch is configured to include an anti-haul feature in communication with the first component and / or the detent finger that causes unintentional movement of the detent finger to its deployed / locked position in response to hydraulic fluid forces and / or fluid dynamics associated with the one-way clutch assembly act within the power transmission device, can prevent.

According to one embodiment, a first anti-exhaust feature is intended to provide an elongate flow line in the first component for routing fluid from the detent finger in response to rotation of the second component relative to the first component within the power transmission device.

In another embodiment, a second anti-release feature is intended to provide a camming surface on the first component configured to provide fluid to assist retention of the detent finger in its unexposed / unlocked position in response to rotation of the second component relative to the first component to conduct within the power transmission device.

In yet another embodiment, a third anti-haul feature is intended to provide one or more flow lines or "spoilers" in the detent finger configured to provide fluid to assist in retaining the detent finger in its unexposed / unlocked position in response to rotation of the second component to conduct the first component within the power transmission device.

According to another embodiment, a fourth anti-haul feature is intended to provide one or more elongated flow lines at the camming surface of the first component that are aligned with one or more corresponding flow lines or "spoilers" provided in the detent finger for directing fluid and assisting holding the detent finger in its non-deployed / unlocked position in response to rotation of the second component with respect to the first component within the power transmission device. The flowline (s) associated with the cammed surface of the first component are configured to direct fluid flow into the corresponding flowline (s) formed in the latching finger to produce a fluidized biasing force to apply to the latching finger for pressing the latching finger in its non-deployed / locked position.

One or more of these anti-corrosive features may be applied to a passive-type one-way clutch assembly, an actively-controlled one-way clutch assembly, or a combination thereof configured as a bi-directional one-way clutch assembly.

Further applicability areas of the inventive concepts will be apparent from the detailed description provided herein. The aspects and embodiments recited in this summary are not intended to limit the scope of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are merely illustrative of selected embodiments and are not intended to limit the scope of the present disclosure. By referring to the following description taken in conjunction with the accompanying drawings, the inventive concepts associated with the present disclosure will become more apparent; in the drawings show:

1 an exploded isometric view of a bidirectional Clutch assembly configured to include a passive overrunning clutch and a controllable overrunning clutch having an electromechanical actuator and a lead frame and an integrated safety switch according to an aspect of the disclosure;

2 a front view of the punched grid and the integrated safety switch of 1 ;

3 an isometric partial view of the in 1 shown clutch assembly in an assembled state;

3A and 3B Sectional views of the electromagnetic actuator of 3 wherein a detent finger of an active detent finger assembly is shown in a locked (i.e., deployed) or unlocked (ie, not deployed) position in response to a respective deenergized state of the electromagnetic actuator;

4A and 4B similar views as the 3A and 3B showing an alternative embodiment of an electromagnetic actuator embodied in accordance with another aspect of the present disclosure;

5 a clutch assembly having a switchable one-way clutch that includes a press-fit mounted electromagnetic actuator associated with an active latch finger assembly according to another aspect of the present disclosure;

5A an enlarged partial sectional view of 5 FIG. 1, which illustrates a radially pressed electromagnetic actuator according to an aspect of the present disclosure;

5B a similar view as 5A showing another version of a radially pressed electromagnetic actuator embodied according to another aspect of the present disclosure;

6 an exploded isometric view of a bi-directional clutch assembly configured to include a modular active latch finger assembly for a switchable overrunning clutch according to another aspect of the present disclosure;

7 a sectional view of in 6 shown bidirectional clutch assembly;

8th an enlarged partial side view of an active latching finger assembly, which is designed for use with the switchable overrunning clutch which the bidirectional clutch assemblies of 1 associated and configured to provide a high inertia load resistor assembly according to the present disclosure, and which represents the active detent finger in an unlocked position when an electromagnetic actuator is not energized;

9 a similar view as 8th depicting the active detent finger being in a locked position in response to energization of the electromagnetic actuator;

10 a similar view as 8th showing the inertial load resistor assembly that forcibly keeps the active detent finger in its unlocked position upon application of a radially directed high inertia load;

11 an enlarged fragmentary view of an active detent finger assembly adapted for use with any of the steerable one-way clutches associated with any of the previously disclosed bi-directional clutch assemblies of the present disclosure and configured to provide one or more hydraulic deployment prevention features;

12 an enlarged partial view of 11 detailing a first and a second feature for preventing hydraulic discharge;

13 an isometric view of the active latch finger assembly of 11 and 12 associated latching finger, which represents a third feature for preventing hydraulic application closer;

14 an isometric view of the active latch finger assembly of 13 detailing the combination of all three features to prevent hydraulic discharge;

15 another isometric view of the active latch finger assembly of 13 having the three features for preventing hydraulic discharge of 14 now combined with a fourth feature for preventing hydraulic discharge shows; and

16 a still further isometric view of the active latch finger assembly of 13 who have an alternative configuration for the in 15 shown fourth feature for preventing hydraulic discharge.

DESCRIPTION OF THE IMPLEMENTATION EMBODIMENTS

Embodiments will now be described more fully with reference to the accompanying drawings. Each embodiment generally relates to an overrunning clutch device (ie, a brake and / or a clutch) that includes at least one controllable override lockout device that includes a movable locking component (eg, a clamp body, a latch finger, etc.) that is at least partially electromagnetic Actuator is controlled. Thus, the freewheel lock device mechanically transmits torque but is actuated via an electrical actuation system. However, the embodiments are provided only to the extent that the present disclosure is exhaustive, and will fully convey the scope to those skilled in the art. Numerous specific details are given, such as examples of specific components, devices, and methods to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that embodiments may be embodied in many different forms, and that neither should be construed to limit the scope of the disclosure. In some embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

On the 1 - 3 Referring now to the drawings, wherein like numerals indicate corresponding parts throughout the several views, a bidirectional clutch assembly will be described 20 generally shown. As will be detailed, the bidirectional clutch assembly includes 20 In general, a coupling module with a stationary outer ring and a rotatable inner ring, a passive overrunning clutch with a plurality of passive latching fingers and a controllable overrunning clutch with at least one active latching finger assembly and an electromagnetic actuator. The coupling module of the clutch assembly 20 contains an outer ring 22 which extends in a circle around an axis A. The outer ring 22 contains an outer ring segment 24 and an inner wreath segment 26 which are radially spaced from each other and a radial web segment 27 connected to each other. The outer wreath segment 24 has several outer approaches 28 up, extending from the outside surface 29 extend radially outward for mating with a first component. The first component may be a stationary component (eg, a housing of a transmission) or a rotary component (such as a shaft). The outer wreath segment 24 also has at least one projection 30 up, extending from the outside surface 29 extends radially outward. Each of the tabs 30 defines a radially extending actuator pocket 32 and a detent pocket 33 , It should be obvious that more or less protrusions 30 could be used. The inner wreath segment 26 has several inner ramp surfaces, hereinafter referred to as inner ratchet teeth 34 are referred to, which extend radially inwardly and are distributed uniformly about the axis A.

The coupling module of the clutch assembly 20 also contains an inner ring 36 which also extends in a circle around the axis A. The inner ring 36 has an outer edge 38 and an inner edge 40 on, passing through a radial web segment 41 are radially spaced from each other. The outer edge 38 is radially between the outer and inner rim segment 24 . 26 of the outer ring 22 arranged, and the inner edge 40 is radially inward of the inner rim segment 26 of the outer ring 22 arranged. The inner edge 40 of the inner ring 36 has several inner approaches 42 which extend radially inwardly for mating with a second component (typically a rotary component). Commonly, the approaches connect 42 a shaft or coupling plates for rotation with the inner ring 36 , Furthermore, the outer edge 38 of the inner ring 36 several outer ramp surfaces, hereinafter referred to as outer ratchet teeth 44 are designated, which extend radially outward and are evenly distributed about the axis A.

The passive overrunning clutch contains several locking elements, also as passive latching fingers 46 referred to, which is pivotable in the inner ring 36 trained latch finger openings are supported for pivoting between a locked position and an unlocked position. In the locked position take the passive catch fingers 46 the inner ratchet teeth 34 of the outer ring 22 engaged to the outer and inner ring 22 . 36 during a rotation of the inner ring 36 counterclockwise with respect to the outer ring 22 to connect with each other. Therefore prevents interference by one or more passive latching fingers 46 a relative displacement of the outer and inner ring 22 . 36 in the counterclockwise direction. The passive catch fingers 46 however, allow for relative displacement, that is, free running, in a clockwise direction when in the locked position as they pass over the ramped profile of the inner ratchet teeth 34 ratchet. In the unlocked position are the passive latching fingers 46 radially from the inner ratchet teeth 34 of the outer ring 22 spaced, which is why they also rotate the inner ring 36 with respect to the outer ring 22 allow in a counterclockwise direction.

In conjunction with the controllable one-way clutch becomes an active latch finger arrangement 48 through each of the catch finger pockets 33 the outer ring segment 24 added. Each of the active snap finger arrangements 48 contains an active latch finger 50 which is selectively pivotable between a locked (deployed) and an unlocked (not deployed) position. In the locked position, the active latch finger takes 50 the outer ratchet teeth 44 of the inner ring 36 locking into engagement, whereby the outer and inner ring 22 . 36 during a movement of the inner ring 22 with respect to the outer ring 22 be locked together in a clockwise direction. The active snap finger 50 however, still allows relative displacement, that is, free running, counterclockwise. In the unlocked position is the active latch finger 50 radially from the outer ratchet teeth 44 spaced, thereby allowing the inner and outer ring 22 . 36 Turning towards each other. Further, each of the active latch finger assemblies includes 48 an anchor 60 , which is next to the active snap finger 50 and operative to provide pivotal movement of the active detent finger 50 is arranged.

The switchable overrunning clutch also contains electromagnetic actuators 51 each having a coil arrangement 52 included, which in the actuator pocket 32 is attached and from the active latch finger 50 and anchor 60 is radially spaced. The coil arrangement 52 contains a nucleus 54 made of a magnetically permeable material, one around the core 54 arranged around bobbins 56 and one around the bobbin 56 wound coil around 58 , Furthermore, the anchor 60 between the active latch finger 50 and the coil 58 to panning to the core 54 and thus providing the pivotal movement of the active detent finger 50 in response to a coil excitation 58 arranged. The anchor 60 can be made of a magnetic material to excite the coil 58 magnetically attracted to the core, or he can with alternative actuators 51 be made of a non-magnetic material for mechanical coupling with a movable component (a solenoid).

In a preferred but non-limiting arrangement, the coil becomes 58 if a voltage and / or a current to the coil 58 is applied to an electromagnet that generates an electric field (or an electric flux). The river flows outwards in all directions and transmits through the small air gap between the anchor 60 and the core 54 in the middle of the coil assembly 52 , The core 54 is magnetized, causing the anchor 60 to the core 54 is attracted. The resulting movement pushes the active detent finger 50 due to the linkage between the active detent finger 50 and the anchor 60 in the mechanical application. When deploying the active locking finger moves 50 from its unlocked position ( 3B ) into its locked position ( 3A ), where he turns himself against one of the outer ratchet teeth 44 of the inner ring 36 positioned and the inner ring 36 effectively blocks against rotation in that direction. There is a disengagement when voltage and / or current from the coil assembly 52 be removed, with the anchor 60 is demagnetized and no magnetic attraction on the core 54 the coil arrangement 52 exercises. A biasing member, such as a detent finger return spring 61 , is between the active latch finger 50 and the outer ring 22 in the catch finger pocket 33 positioned, thereby causing the active latch finger 50 when de-energizing the coil assembly 52 and demagnetization of the core 54 moved back to its unlocked position.

It should be obvious that the arrangement from the anchor 60 , the active snap finger 50 and the coil assembly 52 to act, depending on the structure and / or the requirements of the clutch assembly 20 a locking force in a radial direction (as in FIG 1 shown) or to apply in an axial direction. Radially stacked versions of the clutch assembly 20 provide packaging advantages over their axial counterparts in situations where axial space is tight, for example in automatic transmissions. Furthermore, radially actuated clutches transmit drive torque directly outwardly for anchoring to the transmission housing without the risk of transmitting forces directly axially, which could cause problems for sizing other system components to compensate for axial force.

A punched grid 62 is at each of the electromagnetic actuators 51 for electrical interconnection of the coils 58 for exciting the coils 58 attached. It should be obvious that the punched grid 62 any number of coils 58 could connect. A printed circuit board (PCB) 64 is for selectively controlling the excitation of the coils 58 at the punched grid 62 attached. The circuit board 64 is radial and axial next to one of the coils 58 arranged. The punched grid 62 also includes at least one power output contact 66 that is radially and axially adjacent each of the coils 58 is arranged to the coils 58 electrically connect and so the coils 58 Supply power. It could be any number of power contacts 66 for driving any number of coils 58 be used. A resistance welded connection becomes the connection of the power output contact 66 and the coils 58 but other compounds could alternatively be used. Furthermore, at least one wire (not shown) extends between the circuit board 64 and each of the Power output contacts 66 for electrical connection of the circuit board 64 and the power output contacts 66 , The punched grid 62 also contains a wiring harness 68 that is different from the circuit board 64 for connection to a transmission control module (TCM) or powertrain control module (PCM) for transferring data to the PCB 64 and to power the circuit board 64 extends.

In addition, the stamped grid contains 62 a plastic encapsulation or a plastic housing 70 , the or the circuit board 64 and the wires are arranged around to protect the circuit board 64 and the wires for permitting immersion of the lead frame 62 in automatic transmission fluid and operating at temperatures between -40C and + 140C. It should be obvious that the above configuration of the punched grid 62 and the associated components provides a low-cost, modular solution that provides a simpler manufacturing process.

The to the coils 58 applied voltage consists of a high side and a low side and is supplied by the TCM or the PCM of a vehicle. The high side (HS) is typically a power supply shared with other loads, and the low side is typically a discrete line (LSD) that controls the discrete / individual circuit. The LSD can control the amount of current through the coils 58 Taxes. Since the LSD is usually positioned in the TCM / PCM, there is a need for a wire harness between the electromagnetic actuators 51 and the TCM / PCM. The harness undergoes mechanical damage and becomes the discrete LSD line of the electromagnetic actuators 51 "shorted to chassis ground", the coils can be energized. Accordingly, an integrated high-side fail-safe switch (HSFSS) is provided to add another logic level to control the split high-side supply. The HSFSS consists of the printed circuit board 64 (PCB), a high side switch (not shown), a transistor (not shown), and passive components (not shown). They are with the punched grid 62 electrically connected. It should be obvious that the configuration of the punched grid 62 The integrated electronic components protects (including the HSFSS) and ensures improved packaging and reduced wiring. Furthermore, it should be obvious that the modular configuration of the stamped grid 62 and associated components could be used in other clutch assembly configurations, for example, axially-engaged clutch assemblies. The HSFSS is controlled by OWCC_HS_ENABLE, which allows the HSFSS power to the coils 58 passes. 3 shows an embodiment of a circuit with the circuit board 64 according to one aspect of the disclosure could be used.

On the 3 . 3A and 3B Referring to, in one embodiment, the projections define 30 the open side surface 35 the actuator pocket 32 for axially receiving the coil assembly 52 , Furthermore, a radially outwardly facing outer wall 72 of the projection 30 a passageway ready, which is also easy as passage 74 is called, which radially inwardly into the actuator pocket 32 runs. In this embodiment, the coil 58 and the bobbin 56 axially arranged and press fit through the open side surface 35 in the actuator pocket 32 appropriate. After positioning in the actuator pocket 32 extending from the outside wall 72 extends radially inward, becomes the core 54 through the passage 74 and through a central passage of the bobbin 56 Pressed radially inward until it reaches a predetermined, preset point, the magnetic gap G between an armature 60 and the free end of the core 54 established. The core 54 achieves a press fit against an inner surface 75 that the passageway of the bobbin 56 defined and limited, whereby it is fixed against a movement in it. The core 54 Further, by press-fitting in the passageway of the bobbin 56 be mounted or configured in a clearance fit therein. 3A shows an active latch finger 50 in the locked position due to the excitation of the coil assembly 52 , and 3B shows the active latch finger 50 in the unlocked position due to deenergization of the coil assembly 52 ,

On the 4A - 4B Referring to Figure 1, another embodiment of a part of a clutch assembly will be described 120 similar to that with reference to the 3 . 3A and 3B discussed, with the same reference numbers plus 100 be used to identify similar features. The coil arrangement 152 is arranged axially and by press fitting in the respective actuator pockets 132 attached, as discussed above; however, the core is 154 instead of direct fixation and press fit of the core 154 in a passage 174 in an outer wall 172 of the projection 130 via a hollow adapter plug, also as a nut 76 referred to, in the passage 174 in the outer wall 172 more fixed. The mother 76 is first in the passage 174 fixed the projection, and then the core 154 through the mother 76 arranged and fixed to it, whereupon the core 154 to provide the desired gap G between the free end of the core 154 and the anchor 160 is easily adjusted. The mother 76 is with an outer surface 77 provided for fixing in the passage 174 , such as via a press fit and / or an adhesive and / or a welded joint and / or a threaded engagement and / or a another suitable mechanical and / or adhesive fixing mechanism is configured. Further, the mother contains 76 a threaded passageway 78 which is for threaded engagement with an externally threaded part 80 of the core 154 , such as a threaded fastener end part 80 shown is configured. To facilitate screwing in the core 154 in the mother 76 may the fastener end part 80 with a tool holder bag 81 Be provided with the bag 81 may be configured to engage any standard tool drive feature, as known in the art of fasteners. When screwing in the core 154 in engagement with the mother 76 can the gap G between the free end of the core 154 and the anchor 160 by way of example and without limitation by screwing in the free end of the core 154 in contact with the anchor 160 and then screw back and radially withdraw the core 154 from the anchor 160 by a set distance, by knowing the pitch angle of the thread on the nut 76 and the core 154 can be easily deduced, exactly as you wish. When fixing the core 154 in his position, the core can 154 without direct attachment to the coil 158 and on the bobbin 156 and thus is arranged in a clearance fit with it, which in turn makes it easy to adjust and replace the core 154 as desired, without affecting the coil 158 or the bobbin 156 Has.

On the 5 and 5A Referring to Figure 1, another embodiment of a clutch assembly will be described 220 shown, with the same reference numbers plus 200 be used to identify similar features. In this embodiment, a passage extends 274 directly through the outer wall 272 of the projection 230 to the actuator pocket 232 , where the passage 274 configured to the core 254 the coil arrangement 252 radially in it. The core 254 the coil arrangement 252 will be radially inward into the passage 274 pressed and fixed in it. As a result of fixing the core 254 in the passage 274 becomes the entire coil arrangement 252 Fixed in position without access to an inner part of the projection 230 consists. In the embodiment shown, the core is 254 for a tight fit in the passage 274 it should be apparent that other mechanisms for fixing the core 254 in the passage 274 contemplated otherwise than with a press fit herein, such as discussed above with reference to adhesive, welds, mechanical fasteners, and the like. As in 5B Further, another embodiment similar to that described above with reference to FIGS 4A and 4B discussed, with the same reference numbers plus 300 be used to identify the same characteristics. Instead of fixing the core 354 in direct contact with the passage 374 in the outer wall 372 can a mother 376 used to fix the core 354 the coil arrangement 352 in an exact setting with respect to the anchor 360 facilitating an accurate gap G, as desired, between them. The mother 376 is with an outer surface 377 provided for fixing in the passage 374 is configured, for example, via a press fit and / or an adhesive and / or a welded connection and / or a threaded engagement and / or another suitable mechanical and / or adhesive fixing mechanism. Further, the mother contains 376 a threaded passageway 378 which is for threaded engagement with an externally threaded part 380 of the core 354 , such as a part immediately adjacent to the radially outwardly extending bobbin 356 and the coil 358 shown is configured. When screwing in the core 354 in engagement with the mother 376 can the gap G between the free end of the core 354 and the anchor 360 as above with reference to the 4A and 4B be discussed exactly. When fixing the core 354 in the mother 376 should be apparent that, unlike the core 354 the remaining part of the coil assembly 352 outside the projection 312 remains and thus, if desired, is freely accessible, so that a maintenance of the coil assembly 352 is relieved.

On the 6 and 7 With reference to the same reference numerals plus 400 in all of the several views indicate the same parts, is a clutch assembly 420 generally shown. The coupling arrangement 420 contains an outer ring 422 which extends in a circle around an axis A. The outer ring 422 contains an outer wreath 424 that has several outer approaches 428 which extend radially outward for mating with a first component. The first component may be a stationary component (such as a housing of a transmission) or a rotary component (such as a shaft). The outer ring 422 also has an axially facing land or surface 427 on, which has a circular shape, which from the outer rim 424 extends radially inward. Several passive catch fingers 446 are pivotable with the axial surface 427 connected. A biasing spring (not shown) takes each of the passive detent fingers 446 for biasing the passive catch fingers 446 in a locked position against an inner ring 436 engaged.

The inner ring 436 extends in a circle around the axis A. The inner ring 436 has an outer edge or outer band 438 and one Inner edge or an inner band 440 on, on opposite sides of the passive catch fingers 446 are radially spaced from each other. The inner band 440 of the inner ring 436 has several inner approaches 442 thereof extending radially inwardly therefrom for mating with a second component (typically a rotary component). The inner band 440 of the inner ring 436 also has several passive teeth 434 on, which is about engaging through the passive latching fingers 446 for locking the inner and outer ring together 436 . 422 in response to a rotation of the inner ring 436 with respect to the outer ring 422 extend radially outward in a counterclockwise direction. The outer band 438 of the inner ring 436 has several active teeth 444 which extend radially outward therefrom and which are evenly distributed about the axis A.

Several active snap finger arrangements 448 are axial with the outer ring 422 connected. Each of the active snap finger arrangements 448 contains a generally arcuate projection 430 , where the projection 430 as a separate piece of material from the outer ring 422 is executed. Every lead 430 contains a base 82 and a pair of circumferentially extending flanges 84 that are on opposite sides of the base 82 from the base 82 extend. A fastener 85 For example, a bolt extends axially through a through hole in each of the flanges 84 and is on the outer ring 422 attached to the active latch finger arrangements 448 on the outer ring 422 to fix. The active snap finger arrangements 448 are arranged, as desired, about the axis A in circumferential alignment.

The actuator pocket 432 extends axially into the base 82 each of the active latch finger arrangements 448 , A coil arrangement 452 is in each of the Aktortaschen 432 arranged. The coil arrangement 452 contains a nucleus 454 made of magnetically permeable material, a bobbin 456 that is to take up around the core 454 is configured around, and one around the bobbin 456 wound coil around 458 , It should be apparent that the bobbin 456 and the coils 458 the coil arrangements 452 advantageously for easy installation in their respective pockets 432 can be attached.

Each of the active snap finger arrangements 448 contains an active latch finger 450 which is selectively pivotable between a locked and an unlocked position, as discussed above. In the locked position take the active snap fingers 450 the active teeth 444 of the inner ring 436 engage and therefore lock upon movement of the inner ring 436 with respect to the outer ring 422 clockwise the outer and inner ring 422 . 436 together. The active snap fingers 450 However, allow a relative shift, that is, a freewheeling, counterclockwise. In the unlocked position are the active latch fingers 450 radially from the active teeth 444 spaced, thereby allowing the outer and inner ring 422 . 436 Turning towards each other.

The several passive catch fingers 446 are pivotable between a locked position and an unlocked position. In the locked position take the passive catch fingers 446 the active teeth 434 of the outer ring 422 for interconnecting the outer and inner ring 422 . 436 during a rotation of the inner ring 436 with respect to the outer ring 422 in the counterclockwise direction. Therefore prevents interference by the passive latching fingers 446 a relative displacement of the outer and inner ring 422 . 436 counterclockwise, the passive catch fingers 446 However, allow a relative shift, that is, a freewheeling, clockwise. In the unlocked position are the passive catch fingers 446 radially from the passive teeth 434 of the outer ring 422 spaced, thereby allowing the inner ring 436 with respect to the outer ring 422 turns counterclockwise.

Each of the active snap finger arrangements 448 also contains an anchor 460 that is between the active latch finger 450 and the core 454 for providing the pivotal movement of the active detent finger 450 in response to a coil excitation 458 is arranged. A punched grid 462 as above with reference to the 1 and 2 discussed, connects the coils 458 electrically with each other, around the coils 458 for actuating and pivoting the active latching fingers 450 to energize in their engaged, locked position.

Accordingly, it should be apparent that the modular configuration of the active latch finger assemblies / coil assemblies 448 . 452 a separate preparation of the active latch finger assemblies / coil assemblies 448 . 452 from the rest of the clutch assembly 420 allowed. Furthermore, it should be obvious that any number of active latch finger arrangements / coil arrangements 448 . 452 at any given clutch arrangement 420 could be installed to provide a required torque level as required. In addition, it should be understood that the modular active latch finger assemblies as described herein could be used on various other clutch assembly configurations.

It should be obvious that the capability, the coil arrangements discussed above 52 . 152 . 252 . 352 . 452 to be able to load axially or radially, ensures a simple assembly step in the production and allows the coil assembly 52 . 152 . 252 . 352 . 452 before installation in the respective actuator pocket 32 . 132 . 232 . 332 . 432 can be mounted. Further, it should be understood that the above noted axially and radially resilient pockets / projections could also be used on other clutch assembly configurations.

On the 8th - 10 With reference to the same reference numerals plus 500 indicate in all of the several views the same parts is an active latch finger assembly 548 which can be installed in any of the clutch assembly embodiments discussed herein, as well as others, in a detent pocket, as will be readily apparent to those skilled in the art 533 of the outer ring 522 added. Each of the active snap finger arrangements 548 is via an actuation of an electromagnetic actuator 551 making a coil arrangement 552 , an anchor 560 , a biasing spring 561 and an active latch finger 550 has operable.

The active snap finger 550 contains a base segment 86 and a blocking arm 87 , The barrier arm 87 extends from the base segment 86 to a lock end or edge 88 , The base segment 86 is for a pivoting movement between a locked position ( 9 ) and an unlocked position ( 8th and 10 ) in the catch finger pocket 533 arranged pivotally. In the locked position, the locking edge takes 88 the outer ratchet teeth 544. of the inner ring 536 engaged, and in the unlocked position are the locking edges 88 radially from the outer ratchet teeth 544. of the inner ring 536 spaced. The biasing spring 561 is in the catch finger pocket 533 arranged and extends between the base segment 86 and a base or bottom of the detent pocket 533 for pretensioning the detent finger 550 in the unlocked position.

The coil arrangement 552 contains a nucleus 554 of a magnetically permeable material passing through a central channel of a bobbin 556 is arranged, wherein at least one coil 558 directly on the bobbin 556 and thus around the core 554 is wrapped around by the coil 558 generated magnetic flux on the core 554 to focus.

The anchor 560 extends between a first end 90 that in an anchor section 91 the actuator pocket 532 for a pivoting movement in it, and a second end 92 , which is in the catch finger pocket 533 engaged with the base 86 of the detent finger 550 extends. The anchor 560 has bifurcated legs in the illustration 93 on, which form a line therebetween, wherein the line for receiving a reduced width portion of the latching finger 550 is dimensioned therein with clearance, with each leg 93 along opposite sides of the latch finger 550 extends. The first end 90 of the anchor 560 is pivotable about a swivel carrier 94 in the anchor section 91 the pocket 532 arranged to respond to an excitation of the coil 558 between an actuated position and a non-actuated position radially to the core 554 and swing away from it. In the actuated position becomes the anchor 560 to the core 554 pulled, whereupon the thighs 93 the catch finger 550 by engagement with the base segment 86 drive to the locked position. In the non-actuated position is the anchor 560 from the core 554 spaced and allows the biasing spring 561 , the catch finger 550 to bias in the unlocked position. The anchor 560 has an upper curvature 95 in every thigh 92 and a lower curvature 96 next to a mounting area of the legs 92 on, so that the upper and lower curvature 95 . 96 between the first end 90 and the second end 92 are located.

In particular, when the clutch assembly 520 used on automotive components, it is important that the latching fingers 550 only then the outer ratchet teeth 544. of the inner ring 536 engage when the coil assembly 552 is excited to the latch fingers 550 consciously move into the locked position. Therefore, a resistance to inertial load (high acceleration force in certain directions besides simple gravity) is required for the operation of the clutch assembly 520 important. The most common method of counteracting high inertial loading is to use a biasing spring 561 to use with a higher force. Although this procedure is a short-term solution, it has its disadvantages. One of the disadvantages is the increased resistance that occurs during normal operation of the biasing spring 561 which results in larger dimensions and a larger thickness of the armature 560 and / or the coil assembly 552 be required to generate the required increased magnetic forces to increase by the larger spring 561 overcome applied spring force. To accommodate such larger components may also need the pockets 532 . 533 be larger, reducing the overall size and weight of the clutch assembly 520 increase.

As an alternative solution for increasing the dimensions of the above-mentioned components / assemblies, the generally middle portion of the detent finger includes 550 that is between the thighs 93 of the anchor 560 extends, projections 97 having a generally triangular cross-section extending longitudinally along a portion of the barrier arm 87 extends, with the projections 97 from the middle part of the barrier arm 87 away from each other in superimposed relation to a respective leg 93 extend. Each of the tabs 97 converges and ends on a generally sharp edge 98 , Further, by the upper curvature 95 in the thighs 92 of the anchor 560 one shoulder 99 defined or provided next to it. Shoulders 99 are to be engaged by the edges 98 the projections 97 of the detent finger 550 to restrict the locking finger 550 with respect to movement in the locked direction unless it is due to energization of the coil assembly 552 otherwise operated, configured. Thus, the intentional engagement of the projections causes 97 with the shoulders 99 during the application of inertial forces, that the rotation of the detent finger 550 is stopped upwards, thereby engaging the outer ratchet teeth 544. of the inner ring 536 with the blocking edge 88 of the detent finger 550 is prevented (as best in 10 shown).

8th represents an unenergized position of the coil 558 is, wherein the latch finger 550 is in the unlocked position. Further notes 9 an excited position of the coil 558 which is a pivoting of the latch finger 550 into the locked position as intended. 10 shows the situation in which a high inertia load in the radially inward direction (as shown by the arrow) to the clutch assembly 520 is created. In this situation, the anchor turns 560 under the inertia load slightly clockwise, the latch finger 550 However, due to the between the shoulder 99 of the anchor 560 and the locking edges 98 the projections 97 intentionally blocked and prevented from turning a little further counterclockwise. Therefore, the tightness increases between the edges 88 the projections 97 and the shoulders 99 of the anchor 560 strong to move the latch finger 550 against the outer ratchet teeth 544. of the inner ring 536 required force, but does not increase the through the anchor 560 / the coil arrangement 552 required load height for pivoting the locking finger 550 as directed and intended.

It should be obvious that the protrusions 97 the catch finger 550 and the shoulders 99 of the anchor 560 could also be used on other active detent finger assembly configurations to counteract high inertial loading.

Now on the 11 - 14 Referring to Fig. 1, a clutch assembly will be described 600 generally shown as a modified version, which is applicable to any bidirectional coupling arrangement 20 ( 1 - 3 ) 120 ( 4 ) 200 ( 5A ) 300 ( 5B ) 420 ( 6 - 7 ) and 520 ( 8th - 10 ) and in particular to the controllable overrunning clutch associated with each alternative embodiment. In particular, the clutch assembly contains 600 a controllable one-way clutch incorporating a plurality of application inhibiting features, which are then aligned, for inadvertently deploying the active detent finger due to fluid in the transmission and / or in the clutch assembly 600 to remedy the hydraulic effects and to reduce it to a minimum. The hydraulic output prevention features to be described below are also applicable to passive overrunning clutches for the same purpose, and those skilled in the art will recognize the ability to easily incorporate these features into any detent finger overrunning clutch or overrunning clutch rocker. Although each of the above clutch assemblies includes an active detent finger assembly configured to utilize an armature for deploying the active detent fingers upon actuation of the electromagnetic actuator, the hydraulic deployment prevention features of the present disclosure are equally applicable to steerable one-way clutches adopting configurations a "direct" Rastfingererbetätigung, and equally applicable to other types of movable locking elements, which are used in place of locking fingers.

The coupling arrangement 600 contains an outer ring 602 which extends around an axis A. The outer ring 602 contains an outer ring segment 604 , an inner wreath segment 606 and a plate segment 608 between. At the outer wreath segment 604 trained approaches 610 are intended for assembly with a first component. As mentioned, the first component may be a stationary gearbox or a rotary component, such as a shaft. Furthermore, the outer rim segment contains 604 one or more actuator projections 612 holding an actuator pocket 614 , an anchor bag 616 and a detent pocket 618 define. Finally, the inner wreath segment contains 606 several ramped inner ratchet teeth 620 which extend inwardly and are evenly distributed about the axis A.

Although the clutch assembly 600 is shown only schematically, it also contains an inner ring 624 which also extends around the axis A. The inner ring of the clutch assembly 600 should respect structure and function as the inner ring 36 the clutch assembly 20 be understood in a generally similar way. Thus, the inner ring 624 an outer edge segment disposed radially between the outer and inner rim segments 604 . 606 of the outer ring 602 is arranged, and an inner edge segment, the radially inwardly of the inner rim segment 606 of the outer ring 602 is arranged on. The Inner edge segment of the inner ring 624 has internal torque-transmitting structures (ie, lugs or splines) for mating engagement with the second component. Finally, the outer edge segment of the inner ring contains 624 a plurality of ramp-shaped outer ratchet teeth which extend radially outwards and which are distributed uniformly about the axis A.

A passive one-way clutch (not shown) is the clutch assembly 600 assigned and again contains several passive latching fingers, passing through the inner ring 624 be supported pivotally. The passive detent fingers are for engaging the inner ratchet teeth 620 on the inner rim segment 606 of the outer ring 602 movable. As before, the passive latch fingers are configured to the inner ratchet teeth 620 to engage relative rotation between the outer ring 602 and the inner ring 624 in a first (blocking) direction while permitting relative rotation therebetween in a second (free-wheeling) direction.

The bidirectional clutch assembly 600 associated controllable one-way clutch 630 contains an active latch finger arrangement 632 that in every actor projection 612 of the outer ring 602 is included. Any active snap finger arrangement 632 contains an active latch finger 634 , an anchor 636 and an electromagnetic actuator 638 , Every active snap finger 634 is again for a movement between a locked (deployed) and an unlocked (not applied) position with respect to the outer edge segment of the inner ring 624 trained ramp-shaped outer ratchet teeth pivoting in the latch finger pocket 618 supported. In the locked position is an engagement end 634a the active latch finger 634 in such a position with respect to the outer ring 602 Panning that it's the outer ratchet teeth on the inner ring 624 engages to establish the locked clutch mode. The intervention end 634a the active latch finger 634 On the other hand, it is displaced radially and out of the outer ratchet teeth on the inner ring 624 disengaged when they are in their unlocked position to establish the unlocked clutch mode.

Every anchor 636 will be in the anchor bag 616 the actuator projection 612 is pivotally supported and is equipped with a corresponding active latching finger 634 mechanically connected. When the anchor 636 in a respect to the actor 638 is in the tightened position, the active detent finger is located 634 in its deployed position. A positioning of the anchor 636 in an unaddressed position with respect to the actuator 638 In contrast, leads to a positioning of the active locking fingers 634 in their unexposed positions. A return spring 640 is through the outer ring 602 held and thus acts on a back end 634b each active detent finger 634 , the active latch finger 634 normal position to its unstretched position, causing the anchor 636 again biased in a non-tightened position. The return spring 640 could as an alternative directly to the anchor 636 Act. The electromagnetic actuator 638 gets in the actuator pocket 614 the actuator projection 612 supported and has a coil arrangement, which from the armature 636 and the catch finger 634 is radially spaced. As before, the coil assembly includes a core of magnetically permeable material, a bobbin surrounding the core, and a coil wound around the bobbin. As is known, energization of the coil assembly causes magnetic attraction between the core and the armature 636 made, which acts to the anchor 636 pivotally move to its tightened position and the latch finger 634 against the bias of the return spring 646 to move to its deployed position.

In accordance with aspects of the present invention, a plurality of differential features for preventing application are the outer ring 602 and / or the active latch finger 634 and / or the anchor 636 assigned. These features are configured to cause inadvertent (ie, without excitation) deployment of the active detent fingers 634 by avoiding the fluid dynamics and the flow characteristics of the active snap finger arrangements 632 and fluid acting there, cumulatively referred to as "hydraulic application," and counteracting them. Accidental hydraulic deployment is a condition in which the detent finger is moved from its unexposed position to its deployed position by a pressure gradient acting thereon. This pressure gradient coincides with that with the rotation of the inner ring 624 with respect to the outer ring 602 connected fluid dynamics to one on the engagement end 634a the active latch finger 634 acting force vector. With increase in the end 634a the active latch finger 634 acting hydraulically induced force finally overcomes this by the return spring 640 applied biasing force, resulting in an unintentional pivotal movement of the active latching fingers 634 leads to its deployed position while the electromagnetic actuator 638 remains in the un excited state. Thus, the clutch assembly acts 600 as an inefficient fluid pump.

One solution to this undesirable pumping behavior is to add anti-wear features that act to remove fluid flow from sensitive areas of the switchable one-way clutch 630 divert or divert or to reduce the fluid pressure in other areas, thereby eliminating by with freewheel of the inner ring 624 with respect to the outer ring 602 Connected fluid movement on the active latching fingers 634 to reduce applied hydraulic application force. These are the various components of the controllable overrunning clutch 630 Several modifications and / or features have been added. The following description of each feature is in no particular order or relevance or functionality.

According to a first anti-release feature, one in a plate segment 608 of the outer ring 602 trained elongated flow line 650 shown. Although the flow line 650 in the illustration along the axis A and generally symmetrical with respect to a center line of the electromagnetic actuator 638 These are merely nonlimiting examples used to illustrate a suitable embodiment. Applicable alternatives include, without limitation, modifying the length of the flowline 650 , their symmetry, their depth (constant or variable) and their width. Such variations are all intended to prevent pressure build-up or pressure from the high pressure area to the low pressure area of the clutch 630 Drain. Furthermore, this flow line acts 650 on radially outward to the active latch finger assembly 632 flowing fluid, in particular on itself between the outer rim segment 604 and the inner rim segment 606 of the outer ring 602 located fluid, a.

According to a second anti-release feature is on an inner wall surface 662 an outer ring segment 604 of the outer ring 602 a ramp or flow cam structure 660 educated. This flow cam structure 660 is best in 14 shown and contains a raised area segment 664 , which has a ramp-shaped surface segment 666 with the inner wall surface 662 connected is. The length and area configuration (that is, arcuate, planar, constant radius, or variable) of the raised area segment 664 and / or the cam surface segment 666 that with the flow cam structure 660 can be varied. This feature is configured to be one with fluid in and around the coil pocket 614 fluid pressure effect created around pinch point, which results in localized fluid pressurization near and around the active detent finger 634 around, between the inner ring 624 and the outer ring 602 to eliminate.

According to a third anti-exhaustion feature, one or more flow lines, also as spoilers 670 referred to, in the edge area 634c at the end of the intervention 634a the active latch finger 634 educated. The active snap finger 634 is best in the 13 and 14 and includes a pair of leg sections 634d . 634e , which has a crossbar section 634f at the end of the intervention 634a and a pivotal support section 634g at the pivoting end 634b are connected. The 13 and 14 show a pair of ramped spoiler 670 with a greatest depth at the end surface 634c leading to the leg sections 634d . 634e converge. The length, width, taper, position, number and / or profile of these flow spoilers 670 can be varied to meet any suitable requirements. In particular, the spoilers work 670 to that effect, oil over the top end 634a the active latch finger 634 to press to hold the active latch finger 634 in their withdrawn, undeployed position. These flow lines in the active latching fingers 634 act as spoilers insofar as they have a radial fluid force to assist in holding the active detent fingers 634 in the non-deployed position by the return spring 640 support. 12 contains an oblong arrow 680 showing that the combination of these three (3) anti-hull features is configured to control the flow of oil across the tips of the active detent fingers 634 to divert and thereby push them to the coil pocket.

The with the 11 - 14 associated concepts according to the invention are for the optimization of the main performance of these overrunning clutches or clutch rockers of crucial importance and are aimed at minimizing the susceptibility to unintentional hydraulic Rastfingerausbringen.

Now on 15 Referring to Fig. 1, a clutch assembly will be described 600A shown a slightly modified version of the in the 11 - 14 shown coupling arrangement 600 is. This includes the clutch assembly 600A a controlled overrunning clutch 630A in which a plurality of anti-proliferation features, as noted above, are for minimizing / preventing the inadvertent deployment of the active detent finger 634 resulting from the hydraulic effects of the fluid acting thereon due to fluid flow in the transmission and / or in the clutch assembly 600A results, refer, are integrated. Generally speaking, the clutch assembly 600A configured to one or more of in connection with the clutch assembly 600 of the 11 - 13 revealed three ( 3 ) Features to prevent hydraulic discharge with an additional (hereinafter "fourth") anti-application feature to combine. Due to the similarity of most components of the clutch assembly 600A with the previously in connection with the clutch assembly 600 In the following, common reference numerals are used to identify the same components.

The bidirectional clutch assembly 600A associated controllable one-way clutch 630A contains an active latch finger arrangement 632 in each outer ring 602 trained actor collar 612 is included. As before, each active latch finger assembly includes 632 an active latch finger 634 , an anchor 636 and an electromagnetic actuator 638 , Every active snap finger 634 is for movement between a locked (deployed) and an unlocked (not deployed) position with respect to the outer rim segment of the inner ring 624 trained ramp-shaped outer ratchet teeth pivoting in the latch finger pocket 618 supported. As can be seen, contains the controllable overrunning clutch 630A in this non-limiting embodiment, in the illustration: (a) the above-mentioned first anti-wear feature, as in the plate segment 608 of the outer ring 602 trained elongated flow line 650 is configured; (b) the above-mentioned second anti-release feature, as the outer rim segment 604 of the outer ring 602 formed ramp-shaped cam structure 660 is configured; and (c) the above-mentioned third anti-release feature acting as a pair in the peripheral surface 634c at the end of the intervention 634a the active latch finger 634 trained flow lines or "spoilers" 670 is configured. As previously mentioned, the specific dimensions of each of these anti-release features can be modified to that with the clutch assembly 600A connected to meet certain fluid flow and application requirements.

According to the fourth anti-hauling feature 15 a pair in the cam structure 660 formed elongated flow lines 680 that is on in the active snap-in fingers 634 trained spoilers 670 are aligned. The flow lines 680 are meant to be in the spoiler 670 to streamline fluid flow and so on the top segment 634a the active latch finger 634 to exert exerted force, in turn, the active locking fingers 634 in their unstretched position presses. The length, width and depth of the flow lines 680 can be varied, as well as the profile (that is, rectangular or cylindrical) thereof, in order to be optimized in the spoiler 670 to provide directed fluid flow. Although both flow lines 680 When shown in an identical configuration, the present embodiment provides alternative arrangements that are not identical configurations for the flow conduits 680 deploy.

16 represents a different version of a bidirectional clutch assembly 600B which is a controllable one-way clutch 630B having which of the one-way clutch 630A the bidirectional clutch assembly 600A from 15 Generally similar except in the ramped cam structure 660 a single flow line 680 ' is formed on a single in the active latch finger 634 trained spoiler 670 ' is aligned. As before, the use of this fourth anti-wear feature together with the second anti-wear feature (the ramp-shaped cam structure 660 ) and the third anti-impact feature (the spoiler 670 ' ) an improved / enhanced fluid flow, in particular to the end segment 634a the active latch finger 634 is aligned to hold the active locking finger 634 in their unlocked / not deployed position. It should be noted that the clutch assembly 600B is also configured so that the flow line 650 comprehensive first anti-emetic feature to contain.

Again, the hydraulic deployment prevention features disclosed herein find application to both passively and actively controlled overrunning clutches, bundled alone or in bidirectional arrangements. These anti-ejection assemblies are further adaptable to both radially stacked and axially aligned versions of such overrunning clutches. Finally, these features are applicable to both direct latch finger actuation and indirect latch finger actuation types for steerable one-way clutches.

The foregoing description of the embodiments has been provided for purposes of illustration and description. It should not be conclusive or limit the disclosure. Particular elements or features of a particular embodiment are generally not limited to the particular embodiment but, where applicable, interchangeable and may be used in a selected embodiment, even if not specifically shown and described. This can also be changed in different ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Claims (13)

An overrunning clutch for use in a hydraulic fluid power transmission device, the overrunning clutch comprising: a clutch module having a first member and a second member rotatable relative to the first member Member, wherein the second member has a plurality of barrier structures; and a detent finger module having an actuator supported by the first member for movement between a first position displaced from engagement with the detent structures defining a freewheeling mode and a second position engaging the detent structures defining a locked mode wherein the first member and / or the actuator has an anti-exhaust feature configured to maintain the actuator member in its first position during rotation of the second member relative to the first member by counteracting the hydraulic fluid applied to the actuator to support hydraulic forces.  The one-way clutch of claim 1, wherein the anti-exhaust feature counteracts the hydraulic forces applied to the actuator by redirecting the fluid to flow in a path configured to urge the actuator to its first position.  The one-way clutch of claim 2, wherein the anti-exhaust feature is a flow conduit formed at a location between the barrier structures on the second member and the actuator in the first member.  Overrunning clutch according to claim 2, wherein the anti-Auslegeungsmalmal is at least one formed in the actuator flow line.  The one-way clutch of claim 2, wherein the anti-exhaust feature is a ramped surface formed on the first member and configured to direct the hydraulic fluid to act on the actuator to forcibly urge the actuator to its first position.  The one-way clutch of claim 2, wherein the anti-exhaust feature is a flow conduit formed in the first member configured to direct the hydraulic fluid to act on the actuator to forcibly urge the actuator to its first position.  The overrunning clutch of claim 2, wherein the anti-haul feature includes a first anti-haul feature and a second anti-haul feature that cooperate to direct the hydraulic fluid to overflow the actuator and urge the actuator to its first position.  The overrunning clutch of claim 7, wherein the first anti-haul feature is a flow conduit formed at a location between the barrier structures on the second member and the actuator in the first member, and wherein the second anti-release feature is a ramped surface formed on the first member and is configured to direct the hydraulic fluid to act on an end portion of the actuator.  The overrunning clutch of claim 8, wherein the anti-haul feature further includes a third anti-haul feature that cooperates with the second anti-hull feature to direct fluid to act on the end portion of the actuator.  The one-way clutch of claim 9, wherein the third anti-leak feature is configured to include at least one flowline formed in the end portion of the actuator.  The overrunning clutch of claim 10, wherein the anti-haul feature includes a fourth anti-hull feature that cooperates with the third anti-hull feature.  The one-way clutch of claim 11, wherein the fourth anti-leak feature is configured to include at least one flowline formed in the ramped surface on the first member and arranged to direct fluid to the at least one flowline formed in the end portion of the actuator.  The one-way clutch of claim 12, wherein a pair of the flow conduits are formed in the first member and aligned with a pair of the flow conduits formed in the end portion of the actuator.

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