Friction disc arrangement for a vehicle and associated torque converter assembly

Abstract

Friction disc arrangements and related variator assemblies for vehicles are disclosed. The disclosed assemblies include a torsional vibration damper including a plate. The assemblies also include a clutch operably coupled to the torsional vibration damper. The clutch includes a friction disc having a protrusion coupled to and extending axially away from a distal portion of the friction disc. The clutch also includes a piston configured to push the friction disc into engagement with a variator cover to transfer torque from the variator cover to the torsional vibration damper. The protrusion includes a first segment directly contacting a spring member or spring seat of the torsional vibration damper and a second segment between the first segment and the distal portion of the friction disc, the second segment configured to slide against a guide surface of the plate to provide radial guidance to the friction disc.

Description

Technical Field

[0001] The present invention relates generally to vehicles, and more specifically to friction disc devices and associated torque converter assemblies for vehicles. Background Technology

[0002] Motor vehicles equipped with automatic transmissions typically employ a hydraulic coupling, such as a torque converter, positioned between the engine and the vehicle's transmission to facilitate the transfer of torque from the engine to the transmission. These torque converters may include a lock-up clutch and a torsional vibration damper (e.g., a tuning spring and mass block) operatively coupled to the lock-up clutch and configured to reduce torsional vibrations or sudden rotational movements generated by the engine when the lock-up clutch is engaged, thereby increasing the component life of the vehicle's transmission and / or drivetrain. Summary of the Invention

[0003] One aspect of the invention includes a vehicle torque converter assembly. The vehicle torque converter assembly includes a torsional vibration damper comprising a plate. The vehicle torque converter assembly also includes a clutch operatively coupled to the torsional vibration damper. The clutch includes a friction disc having a protrusion coupled to a distal portion of the friction disc and extending axially away from the distal portion. The clutch also includes a piston configured to actuate the friction disc against a torque converter cover to transmit torque from the torque converter cover to the torsional vibration damper. The protrusion includes (a) a first section directly contacting a spring member or spring seat of the torsional vibration damper, and (b) a second section between the first section and the distal portion of the friction disc, the second section being configured to slide against a guide surface of the plate to provide radial guidance to the friction disc.

[0004] Another aspect of the invention includes a vehicle torque converter assembly. The vehicle torque converter assembly includes a torsional vibration damper comprising a plate. The vehicle torque converter assembly also includes a clutch having a friction disc. The friction disc includes a protrusion and an extension coupled to a distal portion of the friction disc. The protrusion is located at a first radius of the friction disc, and the extension, or a portion thereof, is located at a second radius of the friction disc different from the first radius. The extension is adjacent to the protrusion and extends away from the protrusion along the second radius. The clutch also includes a piston configured to actuate the friction disc against a torque converter cover to transmit torque from the torque converter cover to the torsional vibration damper. The protrusion is configured to engage a spring member or spring seat of the torsional vibration damper. The extension is configured to slide against a guide surface of the plate to provide radial guidance to the friction disc.

[0005] The preceding paragraphs have been provided by way of general introduction and are not intended to limit the scope of the following claims. Attached Figure Description

[0006] A more complete and better understanding of this disclosure and its many accompanying advantages will be readily available when considered in conjunction with the accompanying drawings and by referring to the following detailed description, in which:

[0007] Figure 1 This is a schematic diagram of an example vehicle in which the examples disclosed herein can be implemented;

[0008] Figure 2 This is a view of an example torque converter in which the examples disclosed herein can be implemented;

[0009] Figure 3 It is based on the teachings of this disclosure and follows Figure 2 A partial cross-sectional view of an example torque converter of line AA, showing the vehicle torque converter assembly;

[0010] Figure 4 yes Figure 3 Enlarged partial views of example clutches and example dampers in a vehicle torque converter assembly;

[0011] Figure 5-10 yes Figure 3 Detailed views of the vehicle torque converter assembly are shown, along with an example implementation thereof;

[0012] Figure 11 This is a cross-sectional view of an example disc component according to the teachings of this disclosure, showing its main protrusion;

[0013] Figure 12 It is based on the teachings of this disclosure and follows Figure 2 Another partial cross-sectional view of the example torque converter of line AA, and shows the vehicle torque converter assembly;

[0014] Figure 13 yes Figure 12 Enlarged partial views of example clutches and example dampers in a vehicle torque converter assembly;

[0015] Figure 14-16 yes Figure 12 Detailed views of the vehicle torque converter assembly are shown, along with an example implementation thereof;

[0016] Figure 17 It is based on the teachings of this disclosure and follows Figure 2 Another partial cross-sectional view of the example torque converter of line AA, and shows the vehicle torque converter assembly;

[0017] Figure 18-20 yes Figure 17 Detailed views of the vehicle torque converter assembly are provided, and an example implementation of it is shown; and

[0018] Figure 21This is a cross-sectional view of an example disc component according to the teachings of this disclosure, and shows its extension.

[0019] These figures are not drawn to scale. Generally, the same reference numerals will be used throughout the figures and the accompanying written description to refer to the same or similar parts. Detailed Implementation

[0020] Some vehicle torque converters include clutches (e.g., lock-up clutches) with known friction or clutch discs that engage with a cover plate. To ensure proper clutch operation or function, these known friction discs are typically centered through mechanical design. For example, during clutch operation, the friction disc slidably engages with known vehicle torque converter components, such as damping plates in the torque converter housing. However, these known friction discs may not receive sufficient radial guidance from such torque converter components, resulting in a lack of concentricity. Generally, the concentricity of the friction disc is critical for well-controlled lock-up functionality. A lack of concentricity during clutch engagement can lead to relatively high torque fluctuations in stick-slip conditions. Therefore, these known friction discs and / or torque converter components, when implemented in vehicle torque converters, significantly degrade clutch performance and the component life of the associated clutch components housed within the vehicle torque converter.

[0021] Friction disc assemblies and associated torque converter assemblies for vehicles are disclosed. The examples disclosed herein provide a compact, cost-effective solution for advantageously guiding (e.g., radially guiding) the friction disc of a vehicle torque converter clutch during clutch operation. Some disclosed examples provide example vehicle torque converter assemblies including a clutch (e.g., a lock-up clutch) and example dampers (e.g., a torsional vibration damper) operatively coupled together and disposed within a vehicle torque converter housing. The disclosed clutch includes an example disc member (e.g., a friction disc) and an example piston configured to engage (e.g., slidably engage) the disc member, for example, with a torque converter cover. Furthermore, the disclosed dampers include a first damper plate (e.g., a retainer plate) and a second damper plate (e.g., a driven plate), each of which contributes to providing guidance to the disc member. Specifically, the disclosed disc member includes at least one protrusion coupled to a distal portion (e.g., an outer radial portion) of the disc member and extending axially away from the distal portion into the damper's spring cavity. In some examples, the disclosed protrusion includes a first segment that directly contacts the spring member or spring seat of the damper and a second segment (e.g., a cylindrical portion) located between the first segment and a distal portion of the disc member. In such examples, the second segment of the protrusion may be configured to slide against one or more example guide surfaces associated with the damper to provide radial guidance to the disc member, which will be discussed below. Figure 3 , 4 Let's have a more detailed discussion with 5-11.

[0022] According to one or more examples disclosed herein, a first damper plate and / or a second damper plate may be used to implement one or more (e.g., all) of the disclosed guide surfaces. For example, the damper may include a driven plate, and the first disclosed guide surface associated with the damper includes an outer surface (e.g., an outer circumferential surface) of the driven plate extending along an inner radial portion of the second segment of the protrusion. Alternatively or additionally, in another example, the damper may include a retainer plate, and the second disclosed guide surface associated with the damper includes an inner surface (e.g., an inner circumferential surface) of the retainer plate extending along an outer radial portion of the second segment of the protrusion. In any case, the disclosed guide surfaces may be positioned radially inward and / or radially outward relative to the second segment of the protrusion.

[0023] Alternatively or additionally, to facilitate radial guidance to the disk assembly, some disclosed examples provide at least one extension coupled to a distal portion of the disk assembly, which may include one of an axial extension of the disk assembly, a radial extension of the disk assembly, or a combination thereof. Specifically, the extension is adjacent to a protrusion and extends at or along the radius of the friction disk away from the protrusion, for example toward or to additional protrusions of the disk assembly that are angularly spaced from the aforementioned protrusion. In such examples, the extension, or a portion thereof (e.g., an axial segment defining one or more central surfaces), may be configured to slide against a guide surface associated with the damper to provide radial guidance to the disk assembly, which will be discussed below. Figure 12 , 13 This is discussed in more detail with 14-21. In some examples, the second disclosed guide surface extends along the terminal portion (e.g., end) of the extension and is positioned radially outward relative to the terminal portion. Alternatively, in another example, the third disclosed guide surface associated with the damper includes an outer surface (e.g., an outer circumferential surface) of the retainer plate that extends along the terminal portion and is positioned radially inward relative to the terminal portion.

[0024] Therefore, the second section and / or extension of the protrusion can be advantageously used to center the disc assembly with the damping plate during clutch operation, which improves the associated centering characteristics compared to the known friction discs and vehicle torque converter components described above. Thus, the examples disclosed herein achieve low torque ripple during slippage, well-controlled slippage speed (e.g., desired speed versus actual slippage speed), and smooth clutch engagement.

[0025] In some examples, the body of the disc member (e.g., a core plate) defines a preformed bend at or near its distal end. The distal end of the disc member may include, for example, an end of the body (e.g., an outer radial end) or a region of the body near that end. A first segment of the protrusion may be configured to always contact the spring member or spring seat of the damper to transmit torque. In such examples, a second segment defines a central surface (e.g., an inner or outer circumferential surface) that may be cylindrical. In particular, the central surface of the second segment may be used to center the disc member relative to the first and / or second damper plates. Alternatively or additionally, in some examples, the disclosed extension includes an axial segment and a radial segment connecting the axial segment and the distal end of the disc member. In such examples, the axial segment extends axially away from the radial segment along the axis to define different central surfaces of the extension (e.g., an inner or outer circumferential surface), which may be cylindrical. In particular, the central surface of the extension may also be used to center the disc member relative to the first and / or second damper plates. Furthermore, the disclosed extension may be on the outside or inside of the diameter or radius of the protrusion, as discussed further below.

[0026] Figure 1 This is a schematic diagram of an example vehicle (e.g., a motor vehicle, such as a car, truck, van, SUV, etc.) 100, in which the examples disclosed herein can be implemented. Figure 1 The example shown includes a vehicle 100 comprising an engine (e.g., an internal combustion engine) 102, a transmission system 104, a controller 105, and one or more wheels 106, 108 (sometimes referred to as road wheels), with two of these wheels shown in this example (i.e., the first or front wheel 106 and the second or rear wheel 108).

[0027] Figure 1 The transmission system 104 can be implemented, for example, using a two-speed automatic transmission, a three-speed automatic transmission, etc. Specifically, Figure 1 The drivetrain 104 is constructed and / or configured to transmit torque from engine 102 to one or more (e.g., all) wheels 106, 108, for example, to move vehicle 100. For example, engine 102 generates engine torque, and in response, drivetrain 104 controls the amount or degree of engine torque supplied to wheels 106, 108. In some examples, drivetrain 104 includes a hydraulic system 110 operable by controller 105, which facilitates control of torque converter clutches (e.g., when vehicle 100 is in motion). Figure 3 (Clutch 302 shown). The hydraulic system 110 can be implemented, for example, using a pump and one or more valves (e.g., one or more solenoid valves). In particular, Figure 1The hydraulic system 110 is configured to deliver fluid (e.g., pressurized hydraulic fluid) through the torque converter housing to change the state of the torque converter clutch, which will be discussed in more detail below.

[0028] Figure 1 The controller 105 can be implemented, for example, using an electronic control unit (ECU) such as a transmission control module (TCM). The vehicle controller 105 is communicatively coupled to valves of the hydraulic system 110, for example, via transmission or signal lines, buses (e.g., Controller Area Network (CAN) buses), radio frequency, etc. Specifically, the controller 105 is configured to instruct the hydraulic system 110 to change the state of the torque converter clutch based on detected conditions of the vehicle 100. For example, when the vehicle 100 is traveling at a relatively high speed, the vehicle controller 105 opens and / or closes at least one valve. Furthermore, to facilitate the detection of such vehicle conditions, the controller 105 can be communicatively coupled to one or more sensors of the vehicle 100 to receive sensor data from the sensors.

[0029] Figure 2 This is a view of an example torque converter 200, in which the examples disclosed herein can be implemented. In some examples, Figure 2 The torque converter 200 in Figure 1 This is implemented in vehicle 100 to facilitate the transmission of torque between engine 102 and transmission system 104. That is, in such an example, Figure 1 The vehicle 100 includes a torque converter 200. Specifically, Figure 2 The torque converter 200 is configured to be operatively connected between the engine 102 and the transmission system 104 of the vehicle 100, such that engine torque can be transmitted from the engine 102 to the transmission system 104 via the torque converter 200. According to Figure 2 In the example shown, torque converter 200 includes cover 202, impeller 204 and first hub (e.g., drive hub) 206.

[0030] Figure 2The torque converter 200 can switch between a first operating mode (e.g., unlocked or hydraulic operating mode) associated with a first operating characteristic of the torque converter 200 and a second operating mode (e.g., locked or engaged operating mode) associated with a second operating characteristic of the torque converter 200 that differs from the first operating characteristic. When the torque converter 200 is in its first operating mode, the torque converter 200 allows for a significant rotational or angular deviation between, for example, the output of the engine 102 (e.g., crankshaft) and the first shaft of the transmission system 104 (e.g., transmission input shaft) 208, such that the rotational speed of the first shaft 208 is different relative to the rotational speed of the output of the engine 102. As a result, when the vehicle 100 stops (e.g., the first shaft 208 does not rotate), the engine 102 can remain running (e.g., the crankshaft of the engine 102 remains rotating) without causing the engine 102 to stall or otherwise adversely affect the engine 102. Furthermore, in such an example, the torque converter 200 is configured to increase or multiply the engine torque supplied to the drivetrain 104 and / or wheels 106, 108 when the vehicle 100 is traveling at a specific speed (e.g., a relatively low speed).

[0031] In some examples, Figure 2 The torque converter 200 is configured to substantially prevent rotation or angular deviation of the cover 202 relative to the first shaft 208, for example, via the clutch 302 described below, when the torque converter 200 is in its second operating mode. In such an example, the clutch 302 provides a mechanical connection between the first shaft 208 and the engine 102 when engaged. As a result, the torque converter 200 reduces or eliminates engine power loss that is typically associated with fluid resistance under certain driving conditions (e.g., when the vehicle 100 is traveling at relatively high speeds). Furthermore, when in the second operating mode or transitioning from the first operating mode to the second operating mode, the torque converter 200 is configured to suppress one or more torsional vibrations generated by the engine 102, for example, via the damper 304 described below.

[0032] Figure 2The cover 202, sometimes referred to as the torque converter cover, is relatively non-rotatably (i.e., fixedly) coupled to a component associated with engine 102 (e.g., crankshaft or flywheel) to receive engine torque or output from engine 102. This coupling can be achieved, for example, by one or more example fasteners and / or one or more example fastening methods or techniques. That is, when the cover 202 and the components of engine 102 are assembled, the component associated with engine 102 supports one or more (e.g., all) of the cover 202, impeller 204, and / or more generally, the torque converter 200. In some examples, the torque converter 200 includes a flywheel between the cover 202 and the crankshaft. Furthermore, the cover 202 is relatively non-rotatably (i.e., fixedly) coupled to the impeller 204 to drive the impeller 204 by engine torque, for example, by one or more example fasteners and / or one or more example fastening methods or techniques (e.g., welding). In other words, the cover 202 and the impeller 204 together can rotate in the same direction of rotation (e.g., clockwise or counterclockwise) relative to the first axis (e.g., the axis of rotation) 210 associated with the torque converter 200. Furthermore, the cover 202 and the impeller 204 form and / or define a housing (e.g., a substantially sealed housing) 211 of the torque converter 200, in which one or more torque converter components are disposed.

[0033] Figure 2 The impeller 204 is constructed and / or configured to control parameters of the fluid in the torque converter housing 211 (e.g., flow rate, fluid pressure, etc.) as the impeller 204 rotates relative to the first axis 210, for example, through one or more fins, one or more blades, one or more impeller blades, etc., and / or any other suitable fluid flow control element located on the impeller 204. Furthermore, as previously described, the impeller 204 is relatively non-rotatably (i.e., fixedly) coupled to the cover 202 to receive engine torque from it. In some examples, when the torque converter 200 is in its first operating mode, in response to the rotation of the impeller 204 relative to the first axis 210, the torque converter 200 generates an output or torque (sometimes referred to as output torque) for the drive system 104, the magnitude of which is based on, for example, any of the engine torque, vehicle speed, toroidal parameters, parameters of the fluid flow control element, fluid parameters, fluid properties, etc.

[0034] Figure 2 The first hub 206 is connected to the pump of the hydraulic system 110. Specifically, rotation of the first hub 206 relative to the first axis 210 causes the pump to change at least a portion of the fluid parameters (e.g., flow rate, fluid pressure, etc.), for example in (a) a component of the transmission system 104 (e.g., a gearbox), (b) a fluid path or channel associated with the first axis 208, (c) the housing 211, or (d) one of a combination thereof. Furthermore, in some examples, Figure 2The first hub 206 is configured to removably receive a first shaft 208 associated with the vehicle drivetrain 104 via a bore 212 defined by the first hub 206. For example... Figure 2 As shown, the first shaft 208 extends at least partially into the housing 211 through the hole 212.

[0035] Figure 2 The first shaft 208 is configured to connect between components of the torque converter 200 and the transmission system 104. Specifically, the first shaft 208 is configured to transmit output torque from the torque converter 200 to the transmission system 104, thereby driving the wheels 106, 108. In some examples, the first shaft 208 is inserted into a first hub 206 to connect the first shaft 208 to the output portion of the torque converter 200, such as the second hub 310 described below. In such examples, the first shaft 208 and the output portion are relatively non-rotatable (i.e., fixedly) connected together, for example, via a spline connection.

[0036] Figure 3 It is along Figure 2 A partial cross-sectional view of the torque converter 200 along line AA is shown, and an example vehicle torque converter assembly 301 according to the teachings of this disclosure is also shown. Figure 3 The vehicle torque converter assembly 301 includes an example clutch (e.g., a lock-up clutch) 302 and an example damper (e.g., a torsional vibration damper) 304. Figure 3 The clutch 302 and damper 304 are located in the housing 211 of the torque converter 200. According to... Figure 3 In the example shown, clutch 302 is operatively connected to damper 304. Figure 3 The clutch 302 includes an example disc assembly (e.g., a friction disc) 306 and an example piston 308. The piston 308 is configured to actuate the disc assembly 306 against a cover 202 to transmit torque from the cover 202 to a damper 304. Specifically, the disc assembly 306 is configured to receive radial guidance (e.g., via a driven plate and / or a retainer disc) from a portion of the damper 304 during clutch operation, which will engage below... Figure 4 , 5 -11, 12, 13 and 14-21 are discussed in more detail.

[0037] exist Figure 3 In the example, the damper 304 is operatively coupled to the clutch 302 and configured to receive a first torque (e.g., substantially unregulated torque) from the clutch 302, for example, when the clutch 302 is engaged. Figure 3 The damper 304 may include, for example, a torsional vibration damper configured for a vehicle torque converter 200. The first torque may correspond to the engine torque generated by the engine 102. Specifically, in response to receiving the first torque, Figure 3The damper 304 is configured to suppress one or more torsional vibrations in the first torque (e.g., generated by the engine 102), thereby providing a second torque (e.g., a fundamentally regulated torque) different from the first torque to the output portion of the vehicle torque converter 200. The output portion may include a second hub (e.g., a turbine hub) 310 of the vehicle torque converter 200. Figure 3 As shown, the second hub 310 of the vehicle torque converter 200 is positioned radially inward relative to the damper 304. In some examples, Figure 3 The damper 304 is operably located between the clutch 302 and the second hub 310, such that when the clutch 302 is engaged, torque can be transmitted from the clutch 302 to the second hub 310 through the damper 304.

[0038] To facilitate the suppression of torsional vibrations, the damper 304 includes one or more main spring members 312, one of which is shown in this example. That is, Figure 3 The damper 304 includes a first main spring member 312, such as a compression spring (e.g., a coil spring), and / or any other suitable spring member that can be used with the damper. The first main spring member 312 is operatively coupled to the disc member 306 and (a) a first plate 314 and / or (b) a second plate 316. Furthermore, to facilitate the carrying of the main spring member 312 and / or the transmission of loads through the main spring member 312, the damper 304 also includes one or more plates 314, 316, two of which are shown in this example. That is, Figure 3 The damper 304 includes a first plate (e.g., a retainer plate) 314 and a second plate (e.g., a driven plate) 316. Specifically, the angular motion or rotation of the disc member 306 relative to the plates 314, 316 about a first axis 210 alters the state of the main spring member 312 to produce a damping effect. For example, Figure 3 The first main spring member 312 is configured to change between a first spring state (e.g., uncompressed or expanded state) and a second spring state (e.g., compressed state), thereby significantly reducing the violent or sudden angular motion of the disc member 306 relative to the plates 314, 316.

[0039] Figure 3 Each of the first and second plates 314, 316 can be implemented, for example, using a ring-shaped body. In some examples, Figure 3 The first plate 314 includes a retainer plate and is sometimes referred to as the first damper plate. Figure 3The second plate 316 includes a driven plate and is sometimes referred to as a second damper plate. Furthermore, the first plate 314 and / or the second plate 316 may be made of one or more materials with suitable properties (e.g., relatively high strength and / or stiffness), such as one or more metals (e.g., steel, carbon steel, iron, aluminum, etc.), one or more composite materials, any other material suitable for a vehicle torque converter, or a combination thereof.

[0040] In some examples, Figure 3 The first plate 314 at least partially defines the main cavity (e.g., spring cavity) 318, in which the first main spring member 312 of the damper 304 is positioned. Figure 3 As shown, the first main spring member 312 is centrally disposed in the main cavity 318. Therefore, the size and / or shape of the main cavity 318 can be designed to receive the first main spring member 312. In some examples, the main cavity 318 is annular. In such examples, the main cavity 318 extends completely around the first axis 210 at the radius of the damper 304. Alternatively, the main cavity 318 may extend only partially around the first axis 210 at the radius, for example, such that the main cavity 318 is substantially arcuate and / or forms an arc.

[0041] Figure 3 The second plate 316 is connected to the vehicle torque converter output, for example, directly or via one or more intermediate components. In some examples, the second plate 316 is connected to the second hub 310 of the vehicle torque converter 200 via one or more auxiliary spring members 320. In such an example, the damper 304 includes auxiliary spring members 320 to further improve damper performance, one of which is shown in this example (i.e., the first auxiliary spring member 320). Alternatively or alternatively, the first plate 314 may be similarly connected to the vehicle torque converter output. In such an example, Figure 3 Each auxiliary spring member 320 is operatively coupled to the second hub 310 and (a) the first plate 314 and / or (b) the second plate 316. Specifically, rotation of plates 314, 316 relative to the second hub 310 about the first axis 210 alters the state of the auxiliary spring member 320 to produce an additional damping effect. For example, Figure 3 The first auxiliary spring member 320 is configured to change between a first spring state and a second spring state, thereby significantly reducing the violent or sudden angular movement of the second plates 314, 316 relative to the second hub 310.

[0042] In some examples, to facilitate the carrying of the auxiliary spring member 320, the first plate 314 and / or the second plate 316 may define one or more auxiliary cavities (e.g., spring cavities) 322, in which the corresponding auxiliary spring member 320 is positioned. Figure 3 As shown, the first auxiliary spring component 320 is centrally located in the first auxiliary cavity 322.

[0043] exist Figure 3 In the example shown, the first and second plates 314, 316 are non-rotatably (i.e., fixedly) connected together, for example by one or more fasteners and / or one or more fastening methods or techniques. Furthermore, the first plate 314 and / or the second plate 316 are configured to rotate relative to a portion of the second hub 310. For example, Figure 3 The second plate 316 can rotate relative to the second hub 310 about the first axis 210 by a predetermined angle associated with the travel of the damper in a first rotation direction (e.g., clockwise) and a second rotation direction opposite to the first rotation direction (e.g., counterclockwise).

[0044] In some examples, the second hub 310 of the torque converter 200 includes a flange portion 324 that facilitates the transfer of torque from (a) the damper 304 and / or (b) the example turbine 325 to the second hub 310. Figure 3 The flange portion 324 is located on the second hub 310 and extends radially outward toward the damper 304 relative to the first axis 210. Figure 3 The flange portion 324 is relatively non-rotatably coupled to the second hub 310, for example, by one or more fasteners and / or one or more fastening methods or techniques. In such an example, the second hub 310 and its flange portion 324 form and / or define a one-piece component. In particular, Figure 3 The flange portion 324 extends into the auxiliary cavity 322 to receive the first auxiliary spring member 320. In some examples, the flange portion 324 is configured to receive a load from the first auxiliary spring member 320 (e.g., when the first auxiliary spring member 320 is compressed), which can generate the second torque of the aforementioned damper 304. Alternatively, Figure 3 The flange portion 324 can be configured to provide guidance (e.g., axial guidance and / or radial guidance) to the first plate 314 and / or the second plate 316 during clutch operation.

[0045] according to Figure 3 In the example shown, the first plate 314 includes a first body (e.g., an annular body) 326. Similarly, Figure 3 The second plate 316 includes a second body (e.g., annular body) 328. In some examples, each of the first and second bodies 326, 328 is rotatably coupled to the second hub 310, for example, via a flange portion 324. Figure 3The second hub 310 can be rotatably supported by the torque converter housing 211. In such an example, the first body 326 and the flange portion 324 are configured to slide relative to each other, which provides guidance for the first plate 314. Alternatively, in some examples, the second body 328 and the flange portion 324 are configured to slide relative to each other, which provides guidance for the second plate 316. In particular, when the angular velocity of the second hub 310 is different from (e.g., greater than or less than) the angular velocity of the first or second plates 314, 316, the outer radial end of the flange portion 324 slidably engages the first or second plates 314, 316. This engagement of the flange portion 324 and the plates 314, 316 substantially maintains the position of the damper 304 relative to the housing 211. In this way, the second hub 310 or its flange 324 rotatably supports the first main spring member 312, the first plate 314, the second plate 316, and / or more generally the damper 304. Figure 3 In the example shown, the outer radial end of the flange portion 324 is located between the first and second plates 314, 316. In some examples, the first and second plates 314, 316 are spaced apart from each other such that the first and second plates 314, 316 define the space in which the outer radial end of the flange portion 324 is located.

[0046] The disc component 306 of the clutch 302 can be implemented, for example, using an annular body. Furthermore, the disc component 306 can be made of one or more materials with suitable properties (e.g., relatively high strength and / or stiffness), such as one or more metals (e.g., steel, carbon steel, iron, aluminum, etc.), one or more composite materials, any other materials suitable for vehicle torque converters, or combinations thereof. In some examples, the disc component 306 includes a friction disc, which is sometimes referred to as a clutch disc and / or core plate. Figure 3 As shown, the third body (e.g., annular body, such as a core plate) 329 of the disc member 306 extends between the facing surfaces (e.g., annular surfaces) of the piston 308 and the cap 202. In some examples, Figure 3 The third body 329 may be the core plate of the disc component 306 configured to withstand relatively high friction and / or heat.

[0047] according to Figure 3In the example shown, disc member 306 includes a first protrusion 330, which better enables disc member 306 to change the state of main spring member 312 together with plates 314, 316. The first protrusion 330 of disc member 306 is sometimes referred to as the main protrusion or first main protrusion. The first protrusion 330 of disc member 306 is coupled to the distal portion 332 of disc member 306. The distal portion 332 may include, for example, a region of disc member 306 located, adjacent to, or near the outer end of third body 329 (e.g., may include the outer radial end of the outer circumferential surface). In some examples, the distal portion 332 of disc member 306 corresponds to the outer diameter of third body 329, and in such examples, it is sometimes referred to as the outer radial portion of disc member 306. Figure 3 As shown, the first protrusion 330 extends axially from the distal portion 332 of the disk member 306, for example in a first axial direction 336 toward the impeller 204.

[0048] also, Figure 3 The disc member 306 may include a flange portion 334 that engages with a distal portion 332 of the disc member 306 adjacent to the first protrusion 330. The flange portion 334 of the disc member 306 extends radially outward relative to the first axis 210, away from the distal portion 332 of the disc member 306. In some examples, the size and / or shape of the flange portion 334 may be designed to form an extension of the disc member 306 that, when the clutch 302 is engaged, facilitates the alignment of the disc member 306 relative to the damping plates 314, 316, which will be discussed below. Figure 12 , 13 Discussed in more detail in 14-21.

[0049] according to Figure 3 In the example shown, the first protrusion 330 includes a seat (e.g., in direct contact with the first main spring member 312 or the damper 304) Figure 5 The first segment 338 of the first protrusion 330 (shown as seat 426) is further divided into a second segment 340, which, when the clutch 302 is in operation, helps to center the disc member 306 relative to the damper plates 314, 316. The second segment 340 of the first protrusion 330 is connected to and / or adjacent to the first segment 338. Specifically, Figure 3The second segment 340 is configured to slide against the primary guide surface associated with the damper 304 to provide radial guidance to the disc member 306, which centers the disc member 306 relative to the damper plates 314, 316. More specifically, the second segment 340 is located between the first segment 338 and the distal portion 332 of the disc member 306, which improves the radial guidance function. The primary guide surface can be implemented using the first plate 314 and / or the second plate 316. In some examples, the primary guide surface includes a first outer surface (e.g., the outer circumferential surface of the driven plate) 342 of the second plate 316 extending along the second segment 340. Thus, the first outer surface 342 of the second plate 316 is sometimes referred to as the first guide surface of the second plate 316. In such examples, the primary guide surface associated with the damper 304 is positioned radially inward relative to the second segment 340. Figure 3 As shown, the first outer surface 342 of the second plate 316 is positioned radially inward relative to the second segment 340.

[0050] according to Figure 3 In the example shown, the second plate 316 includes a first example annular portion 344, on which a first guide surface 342 of the second plate 316 is located. That is, the first annular portion 344 may form and / or define the first guide surface 342 of the second plate 316, or at least a portion thereof. In some examples, a second segment 340 of the first annular portion 344, away from the first protrusion 330, is curved (e.g., radially inward relative to the first axis 210) to partially define the main cavity 318 of the damper 304. Thus, in such an example, a portion of the first plate 314, together with the first annular portion 344, provides the main cavity 318. Figure 3 In the example shown, the first annular portion 344 is connected to the distal portion 345 of the second plate 316.

[0051] In some examples, the second plate 316 includes a first auxiliary protrusion 346, which better enables the plates 314, 316 to change the state of the main spring member 312 together with the disc member 306. Figure 3 The first auxiliary protrusion 346 is coupled to the distal portion 345 of the second plate 316, adjacent to the first annular portion 344. In particular, the first auxiliary protrusion 346 of the second plate 316 engages with and / or is configured to engage with the main spring member 312.

[0052] like Figure 3As shown, the second body 328 of the second plate 316 extends radially inward relative to the first axis 210 along the surface of the piston 308 (e.g., the annular surface) toward the second end (e.g., the proximal end) of the second body 328 opposite to the first end. On the other hand, the first body 326 of the first plate 314 extends around the first main spring member 312 and along the housing or first outer casing (e.g., the turbine housing) 348 of the turbine 325 toward the end (e.g., the proximal end) of the first body 326.

[0053] Figure 3 The turbine 325 is relatively non-rotatably (i.e., fixedly) coupled to the second hub and / or its flange portion 324, for example, by one or more fasteners and / or one or more fastening methods or techniques. Figure 3 As shown, the example fastener 349 extends through the first housing 348 of the turbine 325. Thus, for example, when the torque converter 200 is in a first operating mode, torque can be transmitted from the turbine 325 to the second hub 310.

[0054] according to Figure 3 In the example shown, torque converter 200 includes an impeller 204, a clutch 302, a damper 304, a turbine 325, and an example fluid (e.g., torque fluid) 350, each of which is disposed within a housing cavity (e.g., a substantially sealed cavity) 352 formed by torque converter housing 211. Specifically, Figure 3 The turbine 325 is configured to receive fluid 350 from the impeller 204, thereby generating output torque for the torque converter 200 supplied to the drive system 104. For example, the impeller 204 includes a first fluid flow control member (e.g., fins, blades, wheel blades, etc.) 353 and a housing or second housing (e.g., impeller housing) 354 on which the first fluid flow control member 353 is located. The first fluid flow control member 353 of the impeller 204 is radially distributed relative to a first axis 210 and can extend radially inward or outward relative to the first axis 210. Similarly, Figure 3 The turbine 325 includes a second fluid flow control member (e.g., fins, blades, impellers, etc.) 355 located on a first housing 348 of the turbine 325. The second fluid flow control member 355 of the turbine 325 is radially distributed relative to a first axis 210 and extends radially outward relative to the first axis 210. When the first fluid flow control member 353 of the impeller 204 rotates relative to the first axis 210 together with the cover 202, fluid 350 is radially pushed and / or pumped towards the second fluid flow control member 355 relative to the first axis 210. That is, the first fluid flow control member 353 guides the flow of fluid 350 onto the second fluid flow control member 355, causing fluid 350 to exert a fluid force on the second fluid flow control member 355. As a result of this fluid interaction, Figure 3 The turbine 325 generates the output torque of the torque converter 200, the extent of which is based on one or more parameters associated with the torque converter 200, such as the rotational speed of the impeller 204, the rotational speed of the turbine 325, the angles of the corresponding fluid flow control members 353, 355, the lengths of the corresponding fluid flow control members 353, 355, the characteristics of the fluid 350 (e.g., viscosity), etc.

[0055] exist Figure 3 In the example shown, clutch 302 includes piston 308 to facilitate clutch operation. In some examples, Figure 3 The piston 308 can move in a first axial direction 336 and / or a second axial direction 356 (e.g., based on a fluid pressure differential applied to the piston 308 by the fluid 350), which helps to change the state of the clutch 302. The second axial direction 356 is opposite to the first axial direction 336. Specifically, Figure 3 The clutch 302 can be switched between a first state (e.g., disengaged state) and a second state (e.g., fully engaged state or partially engaged state), for example, based on the flow of fluid 350 through housing 211 provided by hydraulic system 110. The first state of clutch 302 corresponds to a first operating mode of torque converter 200. That is, when clutch 302 is in its first state, clutch 302 provides the first operating mode of torque converter 200. Furthermore, the second state of clutch 302 corresponds to a second operating mode of torque converter 200. That is, when clutch 302 is in its second state, clutch 302 provides the second operating mode of torque converter 200.

[0056] Figure 3 The piston 308 can be implemented, for example, using a ring-shaped body. Figure 3 The piston 308 is sized and / or shaped to be installed between the damper 304 and the disc member 306. According to... Figure 3 In the example shown, piston 308 is supported by a portion 358 of torque converter 200 (e.g., a hub, such as a collar hub fixedly connected to cover 202), such that piston 308 is rotatable relative to portion 358 of torque converter 200 about a first axis 210. In some examples, the inner surface (e.g., the inner circumferential surface) of piston 308 is configured to slide axially toward and / or away from the outer surface (e.g., the outer circumferential surface) of portion 358. Furthermore, as... Figure 3 As shown, Figure 3 The piston 308 has a surface (e.g., annular surface) close to the first surface (e.g., annular surface) of the disc member 306 disposed on the third body 329.

[0057] on the other hand, Figure 3The dimensions and / or shape of the disc component 306 are designed to fit between the piston 308 and the cap 202. According to Figure 3 In the example shown, the disk member 306 or its third body 329 is supported by a first annular portion 344 of the second plate 316, such that the disk member 306 can rotate about a first axis 210 relative to the first annular portion 344. Furthermore, as... Figure 3 As shown, the disc member 306 includes a second surface (e.g., an annular surface) disposed on the third body 329 and close to the surface (e.g., an annular surface) of the cover 202. The first and second surfaces of the disc member 306 are located on opposite sides of the third body 329. The first surface faces the piston 308, and the second surface faces the cover 202.

[0058] In some examples, in order to provide a second state for the clutch 302 during the lock-up opening operation of the torque converter 200, Figure 3 The face of piston 308 is configured to engage (e.g., slidably engage) a first face of disc member 306 to generate friction. Furthermore, a second face of disc member 306 is configured to engage (e.g., slidably engage) a face of cover 202 to generate friction. This frictional engagement of piston 308, disc member 306, and / or cover 202 provides a mechanical connection between cover 202 and disc member 306, and thus a mechanical connection between cover 202 and damper 304. For example, when controller 105 is activated and / or performs a lock-up / unlock operation, fluid 350 pushes piston 308 in a second axial direction 356 to clamp and / or compress disc member 306 between cover 202 and piston 308, thereby transferring torque (e.g., engine torque generated by engine 102) from cover 202 to damper 304. In such an example, controller 105 instructs hydraulic system 110 to control fluid 350 in housing 211 to apply a first fluid pressure differential to piston 308. This causes piston 308 to move in a second axial direction 356, such that the face of piston 308 and the first face of disc member 306 come into contact with each other and / or apply frictional force. Furthermore, the first fluid pressure differential applied to piston 308 also causes the second face of disc member 306 and the face of cover 202 to come into contact with each other and / or apply frictional force. In this way, the disclosed example actuates... Figure 3 The piston 308 provides a second state for the clutch 302. This change in state of the clutch 302 can cause the disc member 306 and the first main protrusion 330 to rotate about the first axis 210 relative to the first plate 314 and / or the second plate 316.

[0059] On the other hand, in some examples, in order to provide the clutch 302 with a first state during the lock-up closing operation of the torque converter 200, Figure 3The face of piston 308 is configured to disengage (e.g., separate) from the first face of disc member 306. Alternatively, the second face of disc member 306 is configured to disengage (e.g., separate) from the face of cover 202. As a result of this disengagement, cover 202 is substantially disconnected from disc member 306, and therefore substantially disconnected from damper 304. That is, friction associated with piston 308, disc member 306, and / or cover 202 is significantly reduced and / or eliminated. For example, when controller 105 initiates and / or performs a lock-up closing operation, fluid 350 pushes piston 308 away from disc member 306 in a first axial direction 336 to disengage piston 308 from disc member 306, thereby substantially stopping torque transmission between cover 202 and damper 304. In such an example, controller 105 instructs hydraulic system 110 to control fluid 350 in housing 211 to apply a second fluid pressure differential different from the first fluid pressure differential to piston 308, causing piston 308 to move in the first axial direction 336. In this way, the publicly available examples also lead to Figure 3 The piston 308 is positioned to provide the clutch 302 in its first state. The resulting second fluid pressure differential can cause the piston 308 to completely disengage from the disc member 306, so that no part of the piston 308 contacts the disc member 306. For example, when the clutch 302 is in its first state, there may be a relatively small gap between the piston 308 and the disc member 306. However, in some examples, the second fluid pressure differential can allow the piston 308 to make slight contact with the disc member 306, thereby generating a substantially negligible amount of friction between the piston 308 and the disc member 306.

[0060] In some examples, when in the second state and / or transitioning from the first state to the second state, the clutch 302 is configured to slide in a substantially controlled manner (e.g., with a gradually decreasing angular velocity). For example, when the first fluid pressure differential applied to the piston 308 increases, the disc member 306 slides against the piston 308 and the cover 202. In such examples, the controller 105 is configured to instruct the hydraulic system 110 to regulate this sliding of the clutch 302, for example, by specifically increasing the first fluid pressure differential during a time interval. Furthermore, when the first fluid pressure differential is at or above a locking threshold (e.g., a value corresponding to a specific fluid pressure differential), the clutch 302 stops sliding and / or locks. For example, the piston 308, disc member 306, and cover 202 are relatively non-rotatably (i.e., fixedly) engaged together (e.g., temporarily) while the first fluid pressure differential remains at or above the locking threshold.

[0061] In addition, in some examples, to facilitate the connection of the drivetrain 104 to the torque converter 200, the torque converter 200 includes a second hub 310, which is sometimes referred to as the vehicle torque converter output. Figure 3The second hub 310 is sized, shaped, and structured to, and / or otherwise configured to, receive the first shaft 208 and provide the output torque generated by the turbine 325 to the first shaft 208. In such an example, the second hub 310 defines an inner surface (e.g., an inner circumferential surface) on which grooves are positioned, and the first shaft 208 defines an outer surface (e.g., an outer circumferential surface) on which splines are positioned. In such an example, the grooves of the second hub 310 receive the splines of the first shaft 208, thereby connecting the second hub 310 to the first shaft 208 relatively non-rotatably (i.e., fixedly). In other words, when the vehicle 100 is manufactured, the second hub 310 and the first shaft 208 are splined together such that the first shaft 208 and the second hub 310 can rotate together in the same direction relative to the first axis 210.

[0062] In some examples, the second hub 310 is rotatably coupled to the housing 211, for example, via one or more bearings (e.g., thrust bearings) 360, which are operatively positioned between the second hub 310 and (a) the impeller 204 of the torque converter 200 and / or (b) the stator 362. Alternatively or additionally, the second hub 310 may be rotatably supported by different hubs (e.g., collar hubs) adjacent to the second hub 310 and coupled to the cover 202.

[0063] Figure 4 yes Figure 3 Enlarged partial view of clutch 302 and damper 304. According to Figure 4 In the example shown, the second segment 340 of the first main protrusion 330 is located between the first main spring member 312 and the distal portion 332 of the disc member 306, such that the second segment 340 does not overlap with the first main spring member 312 or any portion thereof. Figure 4 As shown, only the first segment 338 of the first main protrusion 330 overlaps with the first main spring member 312. In some examples, the interface 366 of the first and second segments 338, 340 (e.g.) Figure 4 (As shown by the dotted line) is axially separated from the first main spring member 312 or the outer surface of the first main spring member 312 by a distance of 368. Figure 4 Interface 366 can be one of the points, lines, or planes where the first segment 338 and the second segment 340 intersect. In such an example, Figure 4 Interface 366 can form the boundaries (e.g., common boundaries) of the first and second segments 338 and 340.

[0064] exist Figure 4 In the example shown, the first annular portion 344 is located on the second body 328, adjacent to the first auxiliary protrusion 346 of the second plate 316. Figure 4The first annular portion 344 extends and / or bends around a portion (e.g., an inner radial portion) 370 of the first main spring member 312 and is away from the second body 328 (e.g., radially outward relative to the first axis 210) toward the first guide surface 342 of the second plate 316. In some examples, the disc member 306 includes a first central surface 372 positioned on the second segment 340 of the first main protrusion 330, which may be associated with the first annular portion 344 of the second plate 316 and / or one or more different annular portions 422, 424 (e.g., ...). Figure 5 (As shown) interact. The first centering surface 372 includes and / or corresponds to an inner surface (e.g., an inner circumferential surface) defined by the second segment 340 rather than the first segment 338. In particular, in such an example, the second segment 340 or the first centering surface 372 thereon is configured to slide against the first annular portion 344 or the first guide surface 342 thereon to provide radial guidance to the disc member 306.

[0065] In some examples, the first plate 314 includes a first cavity surface 374 facing the first main spring member 312, and the second plate 316 includes a second cavity surface 376 facing the first main spring member 312 and / or the first cavity surface 374. In such examples, the first and second cavity surfaces 374, 376 together form and / or define a main cavity 318. Figure 4 As shown, the second cavity surface 376 can be located on the first annular portion 344.

[0066] In some examples, in addition to or as an alternative to the first guide surface 342 of the second plate 316, the main guide surface associated with the damper 304 includes a first inner surface 378 of the first plate 314 (e.g., the inner circumferential surface of the retainer plate), which extends along a second segment 340 of the first main protrusion 330, facilitating radial guidance to the disc member 306. Therefore, the first inner surface 378 of the first plate 314 is sometimes referred to as the first guide surface of the first plate 314. In such examples, the first plate 314 may include an end portion (e.g., the end of the first body 326) 380 on which the first inner surface 378 is located. Figure 4 As shown, the terminal portion 380 extends axially toward the cover 202 away from the first main spring member 312. Furthermore, in such an example, the main guide surface associated with the damper 304 is positioned radially outward relative to the second segment 340. Figure 3As shown, the first inner surface 378 of the first plate 314 is positioned radially outward relative to the second segment 340. Furthermore, in such an example, the disc member 306 includes a second centering surface 382 located on the second segment 340 of the first main protrusion 330, which can interact with the terminal portion 380 of the first plate 314. The second centering surface 382 includes and / or corresponds to an outer surface (e.g., an outer circumferential surface) defined by the second segment 340 rather than the first segment 338. Specifically, in such an example, the second segment 340 or the second centering surface 382 thereon is configured to slide against the terminal portion 380 of the first plate 314 or the first guide surface 378 thereon to provide radial guidance to the disc member 306. Therefore, the first guide surface 378 and the second centering surface 382 of the first plate 314 together can advantageously be used to center the disc member 306 during clutch operation, similar to the first guide surface 342 and the first centering surface 372 of the second plate 316, which will be discussed below. Figure 8-10 Let's discuss this in more detail.

[0067] exist Figure 4 In the example shown, the first centering surface 372 faces the first annular portion 344 or the first guide surface 342 of the second plate 316. That is, the first centering surface 372 faces radially inward relative to the first axis 210. On the other hand, the second centering surface 382 faces the terminal portion 380 or the first guide surface 378 of the first plate 314. That is, the second centering surface 382 faces radially outward relative to the first axis 210.

[0068] Furthermore, in some examples, the first plate 314 includes a first example abutment 384, which can facilitate changing the state of the first main spring member 312. In such examples, the first cavity surface 374 may be shaped to form and / or define the first abutment 384. In particular, the first abutment 384 is configured to engage an end of the first main spring member 312 or its associated seat. Additionally, in some examples, the first plate 314 is provided with a plurality of abutments 384.

[0069] Figure 5-10 This is a detailed view of the vehicle torque converter assembly 301, showing an example implementation. Specifically, a portion of the damper 304 and clutch 302 (e.g., disc assembly 306) is... Figure 5-10 The example shown illustrates this. However, for clarity, piston 308 is not in... Figure 5-10 The example shown is illustrated.

[0070] Detailed directions Figure 5 The example shown illustrates an exploded view of damper 304, where each of the disc member 306 and the first plate 314 is substantially separate from the second plate 316. Figure 5As shown, the first main protrusion 330 is discontinuous. That is, the first main protrusion 330 extends only partially around the first axis 210. In some examples, in addition to or as an alternative to the first main protrusion 330, the disc member 306 includes one or more other main protrusions. For example, Figure 5 The disc component 306 shown includes a first main protrusion 330, a second main protrusion 402, and a third main protrusion 404, which are radially distributed relative to the first axis 210. Figure 5 In the example shown, the first main protrusion 330 is angularly spaced from the second main protrusion 402 and / or the third main protrusion 404. Furthermore, in some examples, the damper 304 includes one or more other main spring members in addition to or as an alternative to the first main spring member 312. For example, Figure 5 The damper 304 shown includes a first main spring member 312, a second main spring member 406, and a third main spring member 408, which may be radially distributed relative to the first axis 210. In such an example, when the clutch 302 and the damper 304 are assembled, a first main protrusion 330 is operably positioned between the first and third main spring members 312, 408, a second main protrusion 402 is operably positioned between the first and second main spring members 312, 406, and a third main protrusion 404 is positioned between the second and third main spring members 406, 408.

[0071] In some examples, each of the main protrusions 330, 402, 404 of the disc member 306 is configured to drive two main spring members 312, 406, 408. For example, in operation, the first main protrusion 330 drives the first main spring member 312 and the third main spring member 408. In such examples, the rotation of the first main protrusion 330 relative to the second plate 316 about the first axis 210 compresses and decompresses the first and third spring members 312, 408. Furthermore, in some examples, each of the main springs 312, 406, 408 has a relatively small spring disposed therein, which further improves the damper performance. For example, a relatively small compression spring (e.g., a coil spring) smaller than the first main spring 312 can extend through the central portion of the first main spring 312, for example, from a first end of the first main spring 312 to a second end of the first main spring 312 opposite to the first end.

[0072] In some examples, the second plate 316 includes one or more other auxiliary protrusions in addition to or as a replacement for the first auxiliary protrusion 346. For example, Figure 5The second plate 316 shown includes a first auxiliary protrusion 346, a second auxiliary protrusion 410, and a third auxiliary protrusion 412, which may be radially distributed relative to the first axis 210. In such an example, when the damper 304 is assembled, the first auxiliary protrusion 346 is operably positioned between the first and third main spring members 312, 408, the second auxiliary protrusion 410 is operably positioned between the first and second main spring members 312, 406, and the third auxiliary protrusion 412 is positioned between the second and third main spring members 406, 408.

[0073] exist Figure 5 In the example shown, the first annular portion 344 of the second plate 316 is positioned adjacent to the first auxiliary protrusion 346 and / or the second auxiliary protrusion 410 of the second plate 316. In some examples, the first end 414 of the first annular portion 344 is adjacent to the first auxiliary protrusion 346, and the second end 416 of the first annular portion 344 is adjacent to the second auxiliary protrusion 410. The first and second ends 414, 416 are positioned relative to each other on the first annular portion 344 and are sometimes referred to as the opposing ends 414, 416 of the first annular portion 344. Furthermore, as Figure 5 As shown, the first annular portion 344 extends from the first auxiliary protrusion 346 to the second auxiliary protrusion 410 to provide a first guide surface 342 for guiding the second plate 316 of the second protrusion segment 340. Therefore, Figure 5 The first guide surface 342 is discontinuous around the first axis 210. However, in some examples, the first annular portion 344 can be configured such that the first guide surface 342 of the second plate 316 is substantially continuous around the first axis 210.

[0074] In some examples, the second plate 316 includes one or more other guide surfaces in addition to or as a replacement for the first guide surface 342. For example, Figure 5 The second plate 316 includes a first guide surface 342, a second guide surface 418, and a third guide surface 420, each of which can slide against the second segment 340 to provide radial guidance to the disc member 306. Additionally, in such an example, the second plate 316 includes a second example annular portion 422 and a third example annular portion 424, with the second guide surface 418 positioned on the second example annular portion 422 and the third guide surface 420 positioned on the third example annular portion 424.

[0075] In some examples, to facilitate spring compression and decompression, Figure 5 The damper 304 also includes one or more seats (e.g., spring seats). For example, Figure 5The damper 304 may include a first seat (e.g., a spring seat) 426 and a second seat (e.g., a spring seat) 428, with a first main spring member 312 located between them. The first and second seats 426, 428 are sometimes referred to as first pairs of seats. The first and second seats 426, 428 are coupled to corresponding first and second ends (e.g., opposite ends) 430, 432 of the first main spring member 312. In such an example, Figure 5 The first seat 426 may be positioned and / or pressed between (a) the first end 430 of the first main spring member 312 and (b) the first segment 338 and / or the first auxiliary protrusion 346 of the first main protrusion 330. Furthermore, in some examples, in response to a force applied to the first seat 426 by the first segment 338 or the first auxiliary protrusion 346, the first seat 426 distributes the force on the first end 430 of the first main spring member 312. Conversely, in such examples, in response to a spring force applied to the first seat 426 by the first end 430 of the first main spring member 312, the first seat 426 distributes the spring force on the first segment 338 and / or the first auxiliary protrusion 346.

[0076] Similarly, the second seat 428 may be positioned and / or pressed between (a) the second end 432 of the first main spring member 312 and (b) the second main protrusion 402 of the disc member 306 and / or the second auxiliary protrusion 410 of the second plate 316. In some examples, in response to a force applied to the second seat 428 by the second main protrusion 402 or the second auxiliary protrusion 410, the second seat 428 distributes the force on the second end 432 of the first main spring member 312. Conversely, in such examples, in response to a spring force applied to the second seat 428 by the second end 432 of the first main spring member 312, the second seat 428 distributes the spring force on the second main protrusion 402 and / or the second auxiliary protrusion 410.

[0077] In some examples, the state of the first main spring member 312 changes as the first and second seats 426, 428 move toward and / or away from each other along a path (e.g., a curved path). For example, the path may be provided by one or more surfaces of damping plates 314, 316 defining the main cavity 318, such as the aforementioned first cavity surface 374 and / or second cavity surface 376. Although Figure 5 The first pair of seats, 426 and 428, are depicted, but in some examples, Figure 5 The damper 304 is implemented in different ways, for example, by using one or more other pairs of seats similar to the first pair of seats 426, 428. For example, the damper 304 may include a second pair of seats and a third pair of seats, with a second main spring member 406 located between the second pairs of seats and a third main spring member 408 located between the third pairs of seats. Therefore, although Figure 5Aspects relating to the first pairs of seats 426, 428 are described, but in some examples, these aspects also apply to the other pairs of seats of the damper 304.

[0078] Detailed directions Figure 6 The example shown illustrates an assembled view of damper 304, where disc member 306, first plate 314, and second plate 316 are assembled. In some examples, Figure 6 Each of the main protrusions 330, 402, and 404 shown is provided with the aforementioned second segment 340, which is configured to engage (e.g., slidably engage) a corresponding one of the guide surfaces 342, 418, and 420 of the second plate 316. Figure 6 As shown, the first main protrusion 330 (or its second segment 340) directly contacts the third annular portion 424 of the second plate 316, and the second main protrusion 402 (or its second segment 340) directly contacts the first annular portion 344 of the second plate 316.

[0079] Detailed directions Figure 7 The example shown illustrates a partial cross-sectional view of damper 304, in which disc member 306, first plate 314, and second plate 316 are assembled. In some examples, a first segment 338 of the first main protrusion 330 engages with an example seat (e.g., spring seat) 602 of damper 304, configured to distribute forces on the main spring members 312, 406, 408. In such an example, the first cavity surface 374 of the first plate 314 and the second cavity surface 376 of the second plate 316 are configured together to guide the movement of spring seat 602 (and / or one or more other spring seats) through the main cavity 318. Figure 7 In the example shown, the terminal portion 380 of the first plate 314 is located at a radius relative to the first axis 210, which is larger than the different radii of the main protrusions 330, 402, and 404 relative to the first axis 210.

[0080] Go to details Figure 8 The example shown illustrates another exploded view of the damper 304, in which each of the disc member 306 and the first plate 314 is substantially separate from the second plate 316.

[0081] Detailed directions Figure 9 The example shown illustrates an assembled view of damper 304, where disc member 306, first plate 314, and second plate 316 are assembled. In some examples, Figure 9 Each of the main protrusions 330, 402, and 404 shown is provided with the aforementioned second segment 340, which is configured to engage (e.g., slidably engage) the first terminal portion 380 of the first plate 314 or the first guide surface 378 of the first plate 314. Figure 9In the example shown, the first guide surface 378 of the first plate 314 is substantially continuous around the first axis 210.

[0082] Detailed directions Figure 10 The example shown illustrates a partial cross-sectional view of damper 304, in which disc member 306, first plate 314, and second plate 316 are assembled. The example shows a first guide surface 378 of the first plate 314 and a first main protrusion 330 of the disc member 306. Figure 10 As shown, the first main protrusion 330 is positioned radially inward relative to the terminal portion 380 of the first plate 314.

[0083] Figure 11 This is a cross-sectional view of the disc component 306, showing its main protrusion 1000. Figure 11 The main protrusion 1000 may correspond to and / or be used to implement one or more (e.g., all) of the aforementioned first main protrusion 330, second main protrusion 402, and / or third main protrusion 404. Figure 11 In the example shown, the main protrusion 1000 is located on the third body 329, situated at or adjacent to the distal portion 332 of the disc member 306. In some embodiments, as previously described, the distal portion 332 of the disc member 306 may include an end of the third body 329 (e.g., an outer radial end). Furthermore, in some examples, the main protrusion 1000 is provided with a first segment 338, a second segment 340, and an interface 366 between the first segment 338 and the second segment 340. In such an example, the first segment 338 of the main protrusion 1000 may be configured to maintain contact with the main spring members 312, 406, 408 or associated seats 426, 428 for torque transmission.

[0084] In some examples, the disc member 306 includes a first preformed bend 1002 located at or adjacent to the distal portion 332 of the disc member 306. Figure 11 The first preformed curved portion 1002 may form at least a portion of the second segment 340 of the main protrusion 1000 and / or at least a portion of the third body 329. Figure 11 In the example shown, the first preformed bend 1002 is bent radially outward relative to the second axis 1004 of the disc member away from the distal portion 332 of the disc member 306. Figure 11 The second axis 1004 can correspond to the aforementioned first axis 210. Specifically, the first pre-formed curved portion 1002 of the disc member 306 extends away from the distal portion 332 in a radially outward direction 1006, spanning a first radial distance 1008. Figure 21 In the middle, each of the first and second segments 338, 340 of the main protrusion 1000 can be spaced apart from the distal portion 332 of the disc member 306 by a first radial distance 1008.

[0085] In some examples, to ensure that the second segment 340 of the main protrusion 1000 engages with the desired guide surface associated with the damper 304, one or more parameters and / or one or more dimensions associated with the disc member 306 may be specifically pre-configured. For example, the disc member 306 may be manufactured such that the bending radius 1010 of the first preformed bend 1002 is relatively small to provide a relatively short first radial distance 1008, which facilitates engagement of the first centering surface 372 and the first guide surface 342 of the second plate 316. On the other hand, in another example, the disc member 306 may be manufactured such that the bending radius 1010 of the first preformed bend 1002 is relatively large to provide a relatively long first radial distance 1008, which facilitates engagement of the second centering surface 382 and the first guide surface 378 of the first plate 314. Therefore, Figure 11 The radial distance 1008 can be increased or decreased by specifically determining the size and / or shape of the third body 329 and / or the main protrusion 1000 to provide a desired engagement scheme.

[0086] exist Figure 11 In the example shown, the main protrusion 1000 is provided with a first central surface 372 and a second central surface 382, ​​each of which is located on the second segment 340 but not on the first segment 338. In some examples, the first central surface 372, the second central surface 382, ​​and / or more generally, each of the second segments 340 of the main protrusion 1000 is cylindrical. Furthermore, in some examples, Figure 11 The disc component 306 may be provided with a hole 1012 centrally located on the third body 329. Figure 11 In the example shown, the hole 1012 extends completely through the third body 329 of the disk member 306.

[0087] exist Figure 11 In the example shown, the main protrusion 1000 can be configured such that when the disc member 306 is assembled with the damper 304, the interface 366 of the first and second segments 338, 340 is spaced axially by a distance 368 from the main spring members 312, 406, 408. In some examples, the axial distance 368 is substantially maintained during clutch operation, for example, such that the second segment 340 of the main protrusion 1000 does not interfere with and / or contact the main spring members 312, 406, 408.

[0088] In some examples, the second segment 340 is discontinuous around the second axis 1004 and comprises two or more components. Alternatively, in some examples, the second segment 340 is continuous around the second axis 1004 and comprises a single component. Furthermore, Figure 11The disc component 306 can be a one-piece component, such that one or more (e.g., all) of the third body 329, the main protrusion 1000 and / or the first preformed bend 1002 are integral.

[0089] Figure 12 It is the torque converter 200 along Figure 2 Another partial cross-sectional view along line AA shows the vehicle torque converter assembly 301. Figure 12 In the example shown, the clutch 302 and damper 304 of the vehicle torque converter assembly 301 are disposed within the housing 211 of the torque converter 200. Furthermore, this example shows a disc member 306, a piston 308, a second hub 310, a first master spring member 312, a first plate 314, a second plate 316, and a main chamber 318. In some examples, the disc member 306 also includes a first extension 1102 coupled to the distal portion 332 of the disc member 306, which helps to center the disc member 306 relative to the damping plates 314, 316 when the clutch 302 is engaged. In such an example… Figure 12 The first main protrusion 330 is substantially located at a first radius 1104 of the disk member 306, and the first extension 1102 or a portion thereof is substantially located at a second radius 1106 of the disk member 306, different from the first radius 1104. For example, Figure 12 The second radius 1106 is greater than the first radius 1104. In Figure 12 In the example shown, the first extension 1102 extends radially outward relative to the first axis 210 and / or bends away from the first main protrusion 330. Furthermore, Figure 12 The first extension 1102 is adjacent to the first main protrusion 330 and extends axially toward the impeller 204 along a portion of the first plate 314 away from the cover 202. Therefore, the first extension 1102 may be a radial extension of the disc member 306, an axial extension of the disc member 306, or a combination thereof.

[0090] according to Figure 12 In the example shown, the first extension 1102 is configured to slide against a primary guide surface associated with the damper 304 to provide radial guidance to the disc member 306, which centers the disc member 306 relative to the damper plates 314, 316. In some examples, the primary guide surface associated with the damper 304 is positioned radially outward relative to the first extension 1102. As previously described, the primary guide surface associated with the damper 304 may include, for example, a first inner surface 378 of the first plate 314 (i.e., the first guide surface 378 of the first plate 314). Figure 12 As shown, the first inner surface 378 extends along the terminal portion (e.g., end portion) 1108 of the first extension 1102. Furthermore, Figure 12 The first inner surface 378 is positioned radially outward relative to the first extension 1102.

[0091] Figure 13 yes Figure 12 Enlarged partial view of the clutch 302 and damper 304 of the vehicle torque converter assembly 301. Figure 13 In the example shown, the terminal portion 380 of the first plate 314 is located on the first body 326, adjacent to the first extension 1102 or its terminal portion 1108. In some examples, the terminal portion 380 of the first plate 314 extends axially in a first axial direction 336 away from the terminal portion 1108 of the first extension 1102 toward the main cavity 318 or the first main spring member 312 therein, such as... Figure 13 As shown. In addition, in some examples, the disk member 306 includes a third central surface 1110, which is positioned substantially at a second radius 1106 on the first extension 1102, and can interact with the terminal portion 380 of the first plate 314. Figure 13 The third centering surface 1110 includes and / or corresponds to an outer surface (e.g., an outer circumferential surface) defined by the axial segment 1112 of the first extension 1102, which is connected to the radial segment 1114 of the first extension 1102. Specifically, in such an example, the first extension 1102 or its third centering surface 1110 is configured to slide against the terminal portion 380 of the first plate 314 or its first guide surface 378 to provide radial guidance to the disk member 306. Figure 12 In the example shown, the third centering surface 1110 faces the terminal portion 380 of the first plate 314 or the first guide surface 378 thereon. That is, the third centering surface 1110 faces radially outward relative to the first axis 210.

[0092] Figure 14-16 This is a detailed view of the vehicle torque converter assembly 301, showing an example implementation. Specifically, a portion of the damper 304 and clutch 302 (e.g., disc assembly 306) is... Figure 14-16 The example shown illustrates this. However, for clarity, piston 308 is not in... Figure 14-16 The example shown is illustrated.

[0093] Go to details Figure 14 The example shown illustrates another exploded view of the damper 304, where each of the disc member 306 and the first plate 314 is substantially separate from the second plate 316. Figure 14 As shown, the first extension 1102 extends along a second radius 1106 away from the first main protrusion 330, for example toward or reaching the second main protrusion 402. Furthermore, Figure 14 The first extension 1102 is discontinuous. That is to say, Figure 14The first extension 1102 extends only partially around the first axis 210. On the other hand, the first guide surface 378 of the first plate 314 is substantially continuous. In some examples, the disc member 306 includes one or more other extensions in addition to or as a replacement for the first extension 1102. For example, Figure 14 The disk component 306 shown includes a first extension 1102, a second extension 1202 and a third extension 1204, which may be radially distributed relative to the first axis 210.

[0094] exist Figure 14 In the example shown, the first, second, and third main protrusions 330, 402, and 404 of the disc component 306 are radially distributed relative to the first axis 210. That is, Figure 14 The first, second, and third main protrusions 330, 402, and 404 are spaced apart from each other at an angle. In some examples, Figure 14 The first extension 1102 extends substantially from the first main protrusion 330 to the second main protrusion 402. Furthermore, in some examples, each main protrusion 330, 402, 404 has a first arc length 1206, and each extension 1102, 1202, 1204 has a second arc length 1208. In such examples, the first arc length 1206 is smaller than the second arc length 1208, such as... Figure 14 As shown. In other words, Figure 14 The arc length 1206 of each of the first, second and third main protrusions 330, 402, 404 is less than the arc length 1208 of (a) the first extension 1102, (b) the second extension 1202 or (c) the third extension 1204.

[0095] In some examples, the opposing ends 1210, 1212 of the first main protrusion 330, the second main protrusion 402, and the first extension 1102 define cutouts 1214, 1216 extending through the disc member 306. Figure 14 In the example shown, a first cut (e.g., a hole) 1214 is located on the third body 329 at the first end 1210 of the first extension 1102, and a second cut (e.g., a hole) 1216 is located on the third body 329 at the second end 1212 of the first extension 1102 opposite to the first end 1210. Furthermore, in such an example, each of the cuts 1214 and 1216 has a third arc length 1218 that is smaller than the first arc length 1206 and / or the second arc length 1208. In other words, Figure 14 The arc length 1218 of each incision 1214, 1216 is less than the arc length 1206, 1208 of the main protrusions 330, 402, 404 or the extensions 1102, 1202, 1204.

[0096] Detailed directions Figure 15The example shown illustrates an assembled view of the damper 304, in which the disc member 306, the first plate 314, and the second plate 316 are assembled. In some examples, each of the extensions 1102, 1202, 1204 of the disc member 306 engages with the terminal portion 380 of the first plate 314 or the first guide surface 378 of the first plate 314.

[0097] Detailed directions Figure 16 The example shown illustrates a partial cross-sectional view of damper 304, in which disc member 306, first plate 314, and second plate 316 are assembled. The example shows a first guide surface 378 of the first plate 314 and a first extension 1102 of the disc member 306. Figure 16 In the example shown, the axial segment 1112 of the first extension 1102 is positioned radially inward relative to the terminal portion 380 of the first plate 314.

[0098] Figure 17 It is the torque converter 200 along Figure 2 Another partial cross-sectional view along line AA shows the vehicle torque converter assembly 301. In some examples, in addition to or as an alternative to the first guide surface 378 of the first plate 314, the main guide surface associated with the damper 304 includes a first outer surface of the first plate 314 (e.g., the outer circumferential surface of the retainer plate) 1502, which facilitates radial guidance to the disc member 306, the first outer surface 1502 extending along the first extension 1102 of the disc member 306. Therefore, the first outer surface 1502 of the first plate 314 is sometimes referred to as the second guide surface of the first plate 314. In such an example, the first outer surface 1502 of the first plate 314 is located on the terminal portion 380 of the first plate 314. In such an example, the main guide surface associated with the damper 304 is positioned radially inward relative to the first extension 1102 or a portion thereof. Figure 17 As shown, the first outer surface 1502 of the first plate 314 is positioned radially inward relative to the axial segment 1112 of the first extension 1102.

[0099] In such an example, the disk component 306 includes a fourth central surface 1504, which is positioned substantially at a second radius 1106 on the first extension 1102, and can interact with the terminal portion 380 of the first plate 314. Figure 17The fourth centering surface 1504 includes and / or corresponds to the inner surface (e.g., an inner circumferential surface) defined by the axial segment 1112 of the first extension 1102. Specifically, in such an example, the first extension 1102 or the fourth centering surface 1504 thereon is configured to slide against the terminal portion 380 of the first plate 314 or the second guide surface 1502 thereon to provide radial guidance to the disc member 306. Thus, similar to the first guide surface 378 and the third centering surface 1110 of the first plate 314, the second guide surface 1502 and the fourth centering surface 1504 of the first plate 314 together can advantageously be used for guidance of the disc member 306 during clutch operation. Figure 17 In the example shown, Figure 17 The fourth central surface 1504 faces the terminal portion 380 of the first plate 314 or the second guide surface 1502. That is to say, Figure 17 The fourth central surface 1504 faces radially inward relative to the first axis 210.

[0100] Figure 18-20 This is a detailed view of the vehicle torque converter assembly 301, showing an example implementation. Specifically, a portion of the damper 304 and clutch 302 (e.g., disc assembly 306) is... Figure 18-20 The example shown illustrates this. However, for clarity, piston 308 is not in... Figure 18-20 The example shown is illustrated.

[0101] Detailed directions Figure 18 The example shown illustrates an exploded view of damper 304, where each of disc member 306 and first plate 314 is substantially separate from second plate 316.

[0102] Detailed directions Figure 19 The example shown illustrates an assembled view of the damper 304, in which the disc member 306, the first plate 314, and the second plate 316 are assembled. In some examples, each extension 1102, 1202, 1204 of the disc member 306 engages with the terminal portion 380 of the first plate 314 or the second guide surface 1502 of the first plate 314.

[0103] Detailed directions Figure 20 The example shown illustrates a partial cross-sectional view of damper 304, in which disc member 306, first plate 314, and second plate 316 are assembled. The example shows a second guide surface 1502 of the first plate 314 and a first extension 1102 of the disc member 306. Figure 20 In the example shown, the axial segment 1112 of the first extension 1102 is positioned radially outward relative to the terminal portion 380 of the first plate 314.

[0104] Figure 21This is a cross-sectional view of the disc component 306, showing its main extension 1900. Figure 21 The main extension 1900 may correspond to and / or be used to implement one or more (e.g., all) of the aforementioned first extension 1102, second extension 1202, and / or third extension 1204. Figure 21 In the example shown, the main extension 1900 includes an axial segment 1902 and a radial segment 1904, the radial segment 1904 connecting the axial segment 1902 and the distal portion 332 of the disk member 306. That is, the radial segment 1904 is connected to the distal portion 332 of the disk member 306 and extends away from the distal portion 332 in a radially outward direction 1006, and / or bends away from the distal portion 332 toward the axial segment 1902 to connect with the axial segment 1902. On the other hand, Figure 21 The axial segment 1902 extends axially away from the radial segment 1904 along the second axis 1004 to define the third central surface 1110 and / or the fourth central surface 1504. Figure 21 The axial segment 1902 may extend through a specific axial distance 1906 substantially perpendicular to the second axis 1004 and reach the end 1908 of the main extension 1900. Furthermore, as... Figure 21 As shown, the axial segment 1902 is basically located at the second radius 1106, while the main protrusion 1000 is basically located at the first radius 1104.

[0105] In some examples, the main protrusion 1000 of the disc member 306 is provided with a first segment 338, but without a second segment 340. As previously described, the first segment 338 of the main protrusion 1000 may be configured to remain in contact with the main spring members 312, 406, 408 or associated seats 426, 428 to transmit torque. In such examples, Figure 21 No part of the main protrusion 1000 is configured to slide against the main guide surface associated with the damper 304. However, Figure 21 The main protrusion 1000 may be provided with a second segment 340. Therefore, in some examples, the second segment 340 of the main protrusion 1000 and a portion of the main extension 1900 (e.g., axial segment 1902) may be configured together to slide against a corresponding guide surface associated with the damper 304 to provide radial guidance to the disc assembly 306 during clutch operation. For example, the second segment 340 of the main protrusion 1000 may slide against a first guide surface 342 of the second plate 316, while the main extension 1102 or its axial segment 1902 may slide against a first guide surface 378 of the first plate 314 (see, for example, [link to relevant documentation]). Figure 12 and 13 ).

[0106] In some embodiments, the disk member 306 includes a second preformed bend 1910 positioned adjacent to or near the distal portion 332 of the disk member 306, and relative to... Figure 21 The first preformed curved portion 1002 is radially outward. The second preformed curved portion 1910 may form at least a portion of the main extension 1900 and / or at least a portion of the third body 329. Figure 21 In this configuration, the second preformed bend 1910 corresponds to the axial segment 1902 and / or the radial segment 1904, and in some examples, can serve as the interface between the axial segment 1902 and the radial segment 1904. The axial segment 1902 and the radial segment 1904 can be approximately angular and / or perpendicular to each other. Furthermore, due to the curvature of the second preformed bend 1910 and / or the radial length of the radial segment 1904, Figure 21 The axial segment 1902 is spaced apart from the distal portion 332 of the disc member 306 by a second radial distance 1912. For example... Figure 21 As shown, the second radial distance 1912 is much larger than the first radial distance 1008.

[0107] exist Figure 21 In the example shown, the main extension 1900 is provided with a third centering surface 1110 and a fourth centering surface 1504, each of which is positioned on the axial segment 1902 of the main extension 1900 and / or adjacent to the end 1908. In some examples, the third centering surface 1110, the fourth centering surface 1504, and / or more generally, each of the axial segments 1902 is cylindrical.

[0108] In some examples, to ensure that the main extension 1900 of the disc member 306 engages with the desired guide surface associated with the damper 304, one or more parameters and / or one or more dimensions associated with the disc member 306 can be specifically pre-configured. For example, the disc member 306 may be provided with a relatively short second radial distance 1912, which facilitates the engagement of the third centering surface 1110 and the first guide surface 378 of the first plate 314. On the other hand, in another example, the disc member 306 may be provided with a relatively long second radial distance 1912, which facilitates the engagement of the fourth centering surface 1504 and the second guide surface 1502 of the first plate 314. Therefore, Figure 21 The second radial distance 1912 can be expanded or contracted by specifically determining the size and / or shape of the third body 329 and / or the main extension 1900 to provide a desired joining scheme.

[0109] Furthermore, despite Figure 21A main extension 1900 is depicted positioned radially outward relative to the main protrusion 1000, but in some examples, the main extension 1900 and / or the main protrusion 1000 are implemented differently. For example, the main extension 1900 may be positioned radially inward relative to the main protrusion 1000. In such an example, the second radial distance 1912 is significantly smaller than the first radial distance 1008. Alternatively, in such an example, the second radius 1106 where the main extension 1900 is located is significantly smaller than the first radius 1104 where the main protrusion 1000 is located.

[0110] exist Figure 21 In the example shown, the main extension 1900 can be configured such that when the disc member 306 is assembled with the damper 304, the main extension 1900 or its end 1908 is spaced apart from the main spring members 312, 406, 408 by another axial distance 1914. In some examples, this axial distance 1914 is substantially maintained during clutch operation, for example, such that the main extension 1900 does not interfere with and / or contact the main spring members 312, 406, 408.

[0111] Furthermore, in some examples, Figure 21 The disc component 306 is a one-piece component, such that one or more (e.g., all) of the third body 329, the main protrusion 1000, the first preformed bend 1002, the main extension 1900, the axial segment 1902, the radial segment 1904 and / or the second preformed bend 1910 are integral.

[0112] As used herein, the terms “comprising” and “including” (and all their forms and tenses) are open-ended terms. Therefore, whenever a claim uses any form of “comprising” or “including” (e.g., including, comprising, having, etc.) in a preamble or in any kind of claim statement, it should be understood that additional elements, items, etc., may be present without exceeding the scope of the corresponding claim or statement. As used herein, the phrase “at least” is open-ended when used as a transitional term, for example, in the preamble of a claim.

[0113] It should be understood that the systems, apparatuses, and methods disclosed in the foregoing description offer numerous advantages. The examples disclosed herein provide an example disc assembly for a vehicle torque converter clutch, which can be configured to have one or more features that facilitate centering of the disc assembly with one or more damping plates. The examples disclosed herein improve clutch performance and / or component life associated with one or more components of a vehicle torque converter clutch, while reducing component weight and / or associated costs.

[0114] Although certain example systems, apparatuses, and methods have been disclosed herein, the scope of this patent is not limited thereto. Clearly, many modifications and variations are possible based on the foregoing teachings. Therefore, it should be understood that the invention may be practiced in ways other than those specifically described herein within the scope of the appended claims.

[0115] Therefore, the foregoing discussion has only disclosed and described exemplary embodiments of the invention. Those skilled in the art will understand that the invention may be practiced in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, this disclosure is intended to illustrate, and not limit, the scope of the invention and the other claims. This disclosure, including any readily identifiable variations taught herein, partially defines the scope of the foregoing claims, so that no inventive subject matter is open to the public.

Claims

1. A vehicle torque converter assembly, comprising: A torsional vibration damper includes a first plate, a second plate connected to the output of a vehicle torque converter, a first spring member, and a second spring member located radially inside the first spring member, the first spring member and the second spring member being respectively arranged between the first plate and the second plate; A flange is connected between the second spring member and the vehicle torque converter output, the first plate and the second plate are rotatably connected to the vehicle torque converter output relative to each other via the flange, and the flange is arranged in the space between the first plate and the second plate; as well as A clutch operably coupled to the torsional vibration damper, the clutch comprising: A friction disc, comprising a protrusion coupled to a distal portion of the friction disc and extending axially away from the distal portion, and A piston, configured to engage the friction disc with the torque converter cover, to transmit torque from the torque converter cover to the torsional vibration damper. The protrusion includes (a) a first segment that directly contacts the first spring member or the spring seat of the first spring member, and (b) a second segment between the first segment and the distal portion of the friction disk, the second segment being configured to slide against the guide surface of the second plate to provide radial guidance to the friction disk.

2. The vehicle torque converter assembly according to claim 1, wherein, The interface between the first and second segments is axially spaced from the first spring member.

3. The vehicle torque converter assembly according to claim 1, wherein, The guide surface is positioned radially inward relative to the second segment of the protrusion and includes the outer circumferential surface of the second plate extending along the second segment.

4. The vehicle torque converter assembly according to claim 2, wherein, The second plate includes an annular portion on which the guide surface is located, and wherein the annular portion bends away from the protrusion in a second section to partially define the spring cavity of the torsional vibration damper.

5. The vehicle torque converter assembly according to claim 1, wherein, The first plate includes a retainer plate that partially defines an annular cavity in which the first spring member is located.

6. The vehicle torque converter assembly according to claim 5, wherein, The guide surface is positioned radially outward relative to the second segment of the protrusion and includes the inner circumferential surface of the retainer plate extending along the second segment.

7. The vehicle torque converter assembly according to claim 1, wherein, The second segment is continuous around the axis of the friction disc.

8. The vehicle torque converter assembly according to claim 1, wherein, The second segment is discontinuous around the axis of the friction disc and includes two or more components.

9. The vehicle torque converter assembly according to claim 1, wherein, The friction disc includes an extension adjacent to the protrusion and connected to a distal portion of the friction disc, the extension being configured to slide against a guide surface of the second plate or a guide surface of a different disc to provide radial guidance to the friction disc.

10. A vehicle torque converter assembly, comprising: Torsional vibration damper, comprising a plate; as well as Clutch, which includes: A friction disc includes a protrusion and an extension coupled to a distal portion of the friction disc, the protrusion being located at a first radius of the friction disc, and the extension being located at a second radius of the friction disc, different from the first radius, the extension being adjacent to the protrusion and extending away from the protrusion along the second radius. A piston, configured to engage the friction disc with the torque converter cover, to transmit torque from the torque converter cover to the torsional vibration damper. The protrusion is configured to engage a spring member or spring seat of the torsional vibration damper, and the extension is configured to slide against a guide surface of the plate to provide radial guidance to the friction disc. The protrusion includes a segment configured to slide against a guide surface of the plate or a guide surface of a different plate to provide radial guidance to the friction disc.

11. The vehicle torque converter assembly of claim 10, wherein, The plate includes a retainer plate that partially defines an annular cavity in which the spring member is located.

12. The vehicle torque converter assembly of claim 11, wherein, The guide surface is positioned radially outward relative to the extension and includes an inner circumferential surface of the retainer plate extending along the terminal portion of the extension.

13. The vehicle torque converter assembly of claim 11, wherein, The guide surface is positioned radially inward relative to the extension and includes the outer circumferential surface of the retainer plate extending along the terminal portion of the extension.

14. The vehicle torque converter assembly of claim 10, wherein, The protrusion is a first protrusion, and the friction disc includes a second protrusion spaced at an angle from the first protrusion, the extension extending substantially from the first protrusion to the second protrusion.

15. The vehicle torque converter assembly of claim 14, wherein, The arc length of each of the first and second protrusions is less than the arc length of the extension.

16. The vehicle torque converter assembly of claim 14, wherein, The opposite ends of the first protrusion, the second protrusion, and the extension define a cut that extends through the friction disc.

17. The vehicle torque converter assembly of claim 10, wherein, The extension includes an axial segment located at the second radius and a radial segment connecting the axial segment and the distal portion of the friction disc, the axial segment extending axially away from the radial segment along the axis to define a central surface.

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