1828results about "Friction clutches" patented technology

To provide an information processing device that can extract extraction data that captures features of original data as a whole and calculate an index value in a short period of time.SOLUTION: A processing device of an information processing device executes search processing that includes: a first step (S120) of calculating a relative frequency distribution of original data; a second step (S125) of setting a plurality of time windows for cutting out data of the original data for a partial period; a third step (S130) of cutting out data from the original data; a fourth step (S140) of calculating a relative frequency distribution in the extracted data; and a fifth step (S145) of calculating an error between the relative frequency distribution in the original data and the relative frequency distribution in the extracted data. The search processing repetitively executes attempts of the second step to the fifth step while changing settings of the plurality of time windows. An index value of damage to a clutch for detaching an engine is calculated (S160) by using extracted data in which the error is equal to or less than a threshold value.SELECTED DRAWING: Figure 3

The invention provides a disc type dynamic coupling device for an aircraft engine, which is characterized in that a meshing outer rotor is arranged outside a fixed hub, and the upper section of the meshing outer rotor is connected with the upper section of the fixed hub through a double-row deep groove ball bearing in a matched manner; the lower section of the meshed outer rotor is connected with the lower section of the fixed hub through a friction plate group and a friction block assembly; the fixing nut fixes the double-row deep groove ball bearing on the fixed hub, and a bottom plate is arranged between the meshed outer rotor and the bottom of the fixed hub to realize sealing; the propeller rotating bracket is connected to the top end of the meshed outer rotor through a bracket bolt; in an idling state, the fixed hub idles; and the idle speed is increased, internal meshing is achieved between the meshing outer rotor and the fixed wheel set, and then the propeller rotating support is driven to rotate. The unmanned aerial vehicle launching support and carrying space utilization rate and the loading number are effectively increased, and a solution is provided for overall integration, part removal and cost reduction design of an unmanned aerial vehicle power device.

The mechanical clutch for the garden machine tool is applied to the technical field of clutches and comprises a support shell, a transmission shaft sleeve capable of being in transmission connection with an output shaft of an external engine is rotationally installed on the support shell, and the transmission shaft sleeve is sleeved with a driving wheel set; a driving disc is movably installed on the inner side of the support shell, a clutch disc is installed on the transmission shaft sleeve in the axial direction in a sliding mode, the clutch disc is arranged on the outer side of the driving disc, and the driving disc is used for pushing the clutch disc in the axial direction. The driving wheel set comprises a driving wheel and a friction disc capable of axially floating relative to the driving wheel, an elastic piece is installed between the friction disc and the driving wheel, and the friction disc is located on the outer side of the clutch disc. When the clutch disc is separated from the friction disc, the elastic piece can axially push the friction disc to enable the end face of the friction disc to abut against the support shell, and rapid braking of the driving wheel is achieved. The friction disc is designed in an axial floating mode, and after the clutch disc is separated, the elastic piece can push the friction disc to abut against the support shell to achieve rapid braking of the driving wheel.

The input shaft and the output shaft of the shifting block type bidirectional non-return transmission mechanism are coaxial, and the shifting block type bidirectional non-return transmission mechanism is small in overall size, low in cost and convenient to use. The device comprises an input shaft, an output shaft, a second one-way shaft sleeve and a first one-way shaft sleeve which are coaxial, a middle pressing disc matched with the output shaft in a spiral line mode is arranged on the output shaft, and a first force transmission disc and a second force transmission disc are fixed to the output shaft. An arc-shaped groove is formed in the second force transmission disc, a shifting block arranged between the input shaft and the middle pressing disc penetrates through the arc-shaped groove, when the input shaft rotates by an angle a, the shifting block drives the middle pressing disc to rotate by the angle a relative to the output shaft, the middle pressing disc moves to the first limiting position from the second limiting position in the axial direction, and the central angle of the arc-shaped groove is not smaller than the angle a; when the middle pressing disc is in the first limit position, the middle pressing disc, the first force transmission disc and the first one-way shaft sleeve form a friction type transmission structure capable of transmitting torque; and when the middle pressure plate is in the limiting position II, the middle pressure plate, the force transmission plate II and the one-way shaft sleeve II form a friction type transmission structure capable of transmitting torque.

The invention relates to an actuator arrangement comprising: a housing part (3) with a sleeve-shaped section (5) and a flange-shaped section (6); a ball ramp mechanism (4) with a support disc (7) and an actuating disc (8), wherein at least the support disc (7) is radially spaced from an outer surface (36) of the sleeve-shaped section (5); an actuating element (17) which is axially movable coaxially to the ball ramp mechanism (4) on the flange-shaped section (6) of the housing part (3), wherein an annular gap is formed between the outer surface (36) of the sleeve-shaped section (5) and the actuating element (17); and a spring element (23) which is arranged radially outside an actuating surface of the actuating element (17) axially between the housing part (3) and the actuating element (17) in order to exert a restoring force on the actuating element (17). The invention further relates to a differential arrangement with such an actuator arrangement.

A clutch device 10 is provided with a centrifugal clutch mechanism 120 having a weight member 130. The centrifugal clutch mechanism 120 is provided with a holding member 140 for holding the weight member 130, a spring 160 for urging the weight member 130, and a pressure contact member 150 for bringing an input-side rotary plate 20 and an output-side rotary plate 22 into pressure contact with each other. The holding member 140 is provided with an engaging hook 143 that projects from an outer peripheral edge 141E of a body 141 toward an outer side M1 in a radial direction M and engages with a clutch housing 30, and an accommodating recess 145 for accommodating the weight member 130. The body 141 is provided with a thick part 141T including a wall part 141A positioned between the engaging hook 143 and the accommodating recess 145 with respect to the radial direction M, and a projecting part 141B that projects from the wall part 141A toward an inner side M2 in the radial direction M and partitions a part of the accommodating recess 145.

The invention provides a drilling rig for geological exploration, and relates to the technical field of drilling, the drilling rig comprises a motor mounted on a lifting frame, the extending end of the motor is connected to an inner rod, an outer wheel is coaxially arranged outside the inner rod, a plurality of fixing rods are arranged at the upper end of the outer wheel at equal intervals, and the fixing rods are connected to the inner rod. The drilling device has the most prominent advantage that the drilling device has a unique anti-jamming protection mechanism, when a sampling pipe is jammed by a hard stratum or foreign matters in the drilling process, the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, and the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, so that the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism. Power transmission between the motor and the sampling pipe is not rigid connection any more, controlled separation is achieved through a designed combination of a gear system and a friction disc, the motor continues to operate, but not all torque is directly transmitted to the clamped sampling pipe, part of energy is converted into surrounding motion through a rotating wheel system, and therefore the sampling pipe can be separated. And the risk of burnout of the motor due to overload is effectively avoided.

A brake pad set (22) for disc brakes is shown, comprising an inner brake pad (24) and an outer brake pad (26). Each of the brake pads (22, 24) has a backing plate (28) and a brake lining (30, 32) attached to the backing plate (28), which comes into contact with a brake rotor during operation. The inner brake lining (30) and the outer brake lining (32) differ in size and preferably also in geometric shape in top view, wherein the wear volume of the inner brake pad (24) and the wear volume of the outer brake pad (26) differ by less than 10%. Furthermore, a vehicle brake (10) with such a brake pad set (22) is shown.

The utility model discloses a clamping assembly pressure plate which comprises a clutch shell, a disc is connected to the inner wall of the clutch shell, a clamping groove is formed in one end of the clutch shell in a penetrating mode, a diaphragm spring is arranged in the clutch shell, a groove is formed in one side of the diaphragm spring, and the other side of the diaphragm spring is connected with the disc. A circular ring is arranged in the side, close to the diaphragm spring, of the pressing disc, a lug is fixedly connected to the top end of the pressing disc, and a clamping block is fixedly connected to the end, close to the diaphragm spring, of the left side of the pressing disc. By arranging the groove and the circular ring, the groove is formed in one side of the diaphragm spring, the circular ring is arranged in one side of the pressure plate, a clamping structure is formed between the groove and the circular ring, and the circular ring is tightly attached to the groove, so that the diaphragm spring can be more stably fixed in the pressure plate. The clamping groove and the clamping block are arranged, the clamping groove penetrates through the interior of one end of the clutch shell, a clamping structure is formed between the clamping block and the clamping groove, the clamping groove is of an L-shaped structure, and the clutch shell and the pressing disc can be better fixedly connected.

The present invention relates to an actuator 1 for oscillatingly driving a windscreen wiper with a brake medium 2 for frictionally holding a component 3 of the actuator 1, in particular when the wiper arm is in the parked position, wherein the brake medium is opened by a driving force of the actuator 1 and closed by a pushing force of the wiper arm.

The utility model discloses a flywheel structure with efficient heat dissipation, and belongs to the technical field of flywheel heat dissipation. The flywheel structure with the efficient heat dissipation function comprises a flywheel body and further comprises a flywheel shell, an air guide plate is arranged on the side face of the flywheel body, a weight reduction groove is formed in the other side face of the flywheel body, an air outlet is formed in the outer ring face of the flywheel body, and a first windward side is arranged on one side of the air guide plate. And a second windward side is arranged on the other side of the air deflector. In order to solve the problems that a flywheel is low in natural heat dissipation efficiency and prone to failure when the temperature in the flywheel is too high, cold air is released to one side of a flywheel body through a cold air duct, the cold air firstly penetrates through a heat dissipation channel to reach the other side of the flywheel body, an air guide plate guides the cold air into a clutch friction groove, and the cold air can absorb heat in the flywheel body in the heat dissipation channel; meanwhile, cold air can absorb heat in the clutch friction groove, and therefore the purpose of reducing the temperature in the flywheel body is achieved.

The invention relates to a planetary gear two-gear transmission and a working method thereof.The planetary gear two-gear transmission comprises a transmission shell, a planetary gear transmission mechanism arranged in the transmission shell, a normally-closed clutch and a first actuator driving the normally-closed clutch, a top disc is arranged on the right side of the normally-closed clutch, and the top disc is in transmission connection with the normally-closed clutch in the axial sliding and rotating direction; the right end of the top disc is slidably connected with a gear ring on the periphery of the planetary gear transmission mechanism, and a brake concave part is arranged on the periphery of the left end of the top disc. A braking device is arranged on the transmission shell and comprises a braking block, the braking block is driven by a second actuator to move in the direction perpendicular to the axis of the transmission to be wedged into the braking concave part, and the first actuator and the second actuator share the same power. According to the invention, the advantage of smooth and rapid power-interruption-free gear shifting of the planetary gear can be better exerted, the phenomenon of'locking 'chip burning caused by simultaneous combination of the two clutches is avoided, and the problem of power interruption caused by simultaneous separation of the two clutches can also be avoided.

The utility model relates to the field of truck clutches, and discloses a pressure plate for a truck clutch, which comprises a pressure plate body, a plurality of limiting support arc plates are uniformly and fixedly connected to the periphery of the top end of the pressure plate body, and a plurality of mounting pieces are uniformly and fixedly connected to the periphery of the outside of the pressure plate body. Torque supporting blocks are fixedly connected to the left sides of the mounting pieces, a plurality of positioning notches are formed in the positions, located on the inner sides of the limiting supporting arc plates, of the periphery of the top end of the pressing disc body, positioning fixing columns are inserted into the positioning notches in a penetrating mode, and supporting limiting assemblies are installed outside the positioning fixing columns; and a cooling heat dissipation assembly is mounted in the pressure plate body. According to the utility model, the stability of the device is further improved, the compressive deformation resistance of the pressure plate is improved, so that the service life of the pressure plate is further prolonged, heat generated by friction on the inner side during working of the pressure plate is quickly dragged and discharged to the outer side, and the heat dissipation capability of the device is further improved.

A bridge reversal mechanism, comprising a frame and a bridge drive shaft (1), the bridge drive shaft (1) being rotatably mounted on the frame. The bridge reversal mechanism further comprises a support (2), a driving wheel (3), a driven wheel (4), a belt (5), a driving mechanism and an engagement and disengagement operating assembly, the driven wheel (4) being fixedly connected to the bridge drive shaft (1), the driving mechanism being fixed onto the support (2), the driving mechanism being drivingly connected to the driving wheel (3), the belt (5) being sleeved onto the driving wheel (3) and the driven wheel (4), the engagement and disengagement operating assembly being installed on the frame, and the engagement and disengagement operating assembly being drivingly connected to the support (2) to drive the support (2) to move to be away from or close to the bridge drive shaft (1), so as to tension or slacken the belt (5). The engagement and disengagement operating assembly manipulates movement of the support to change the center distance between the driving wheel (3) and the driven wheel (4), so as to control the belt (5) to be tensioned or slackened, thus implementing power engagement and disengagement; tensioning pulleys are not needed and there is no need to acquire power from a drive box, thus allowing for arrangement on both longitudinal axial flow and transverse axial flow models. Further disclosed is a combine harvester comprising the described bridge reversal mechanism.

A power tool includes an electrostatic clutch assembly disposed between a motor and an end effector. A control circuit causes a first voltage to be applied to a first electrode of the electrostatic clutch assembly and a second voltage to be applied to a second electrode of the electrostatic clutch assembly, the first voltage being different from the second voltage, generating a first attractive force between the first and second electrodes, causing a shaft and a clutch housing to be coupled to each other when a torque on one of the shaft or the clutch housing is less than or equal to a first threshold value, and allowing the one of the shaft or the clutch housing to rotationally slip relative to the other of the shaft or the clutch housing when the torque on the one of the shaft or the clutch housing exceeds the first threshold value.

The present invention relates to a pressure plate assembly of an automatic adjustment clutch assembly for a vehicle. The technical scheme is as follows: the pressure plate assembly comprises a pressure plate (1), a cylindrical large tension spring (2), a multi-start transmission thread outer ring (3) and a multi-start transmission thread inner ring (4). The multi-start transmission thread outer ring (3) is fixed on the upper surface of the pressure plate (1), and the multi-start transmission thread inner ring (4) is screwed with the multi-start transmission thread outer ring (3); an arc groove is concentrically provided on the upper surface of the pressure plate (1), and a cylindrical large tension spring (2) is installed in the arc groove, one end of the cylindrical large tension spring (2) is fixed to one end of the arc groove by a screw (11), and the other end of the cylindrical large tension spring (2) is hooked with a spring connection hole (14) at the bottom of the multi-start transmission thread inner ring (4). The present invention is not only convenient to process, easy to industrialize and has low production cost, but also has stable performance and can automatically compensate for the change of the pressing force on the automobile flywheel caused by the wear of the friction plate (24), and the pressing force remains relatively constant.

A clutch apparatus includes a clutch center, a pressure assembly, a disc spring provided concentrically with the pressure assembly and urging the pressure assembly in a first direction, and clutch springs urging the pressure assembly in the first direction. The clutch center includes spring housing portions housing the clutch springs. An outer edge of the disc spring in a radial direction of an output shaft is located radially outward of the clutch springs.

The invention relates to a torque transmission device (1) for a motor vehicle comprising: - a friction device (2) for transmitting torques, - a piston device (3) for closing and opening the friction device (2), - wherein the piston device (3) has a first and a second piston part (4, 5), - wherein the friction device (2) in interaction with the piston device (3) forms a pressure chamber (D), so that the piston device (3) can be moved in the axial direction (A) due to a pressurised fluid in the pressure chamber (D), and - wherein the torque transmission device (1) has an adjusting device (8) with which the piston device (3) can be extended in the axial direction (A) in accordance with wear of the friction device (2). The invention further relates to a clutch or brake device for a motor vehicle with a torque transmission device (1). Furthermore, the invention relates to an electric drive axle for an electric motor vehicle.

The utility model discloses a clutch driven disc for a vehicle and the vehicle, the clutch driven disc comprises a first friction plate and a second friction plate, the first friction plate and the second friction plate are arranged in a spaced mode, and the first friction plate and the second friction plate are suitable for being matched with a flywheel and a pressing disc respectively; the waveform piece assembly is arranged between the first friction piece and the second friction piece, the waveform piece assembly is formed by stacking waveform pieces stacked in the thickness direction, the number of the waveform pieces is two or more, and at least parts of every two adjacent waveform pieces are arranged in a spaced mode to form a deformation space; the waveform piece assembly is suitable for compressing the deformation space when the first friction piece is attached to the flywheel. According to the clutch driven disc for the vehicle, the clutch driven disc can be combined with and separated from the pressing disc and the flywheel more smoothly by reducing the rigidity.

The invention discloses a machining device for automobile parts. The machining device for the automobile parts comprises a first driving assembly, a friction plate clamping assembly, a triggering assembly and a driving connecting assembly. The friction plate clamping assembly comprises a rotating shaft, a base disc, an inner ring abutting block and an outer ring abutting ring, the inner ring abutting block can abut against an inner ring of a clutch friction plate, a clamping groove is formed in the outer ring abutting ring, and the outer ring abutting ring can move inwards till the clutch friction plate is inserted into the clamping groove; an output shaft of the first driving assembly is fixed to the driving connecting assembly, and the outer ring abutting ring can move inwards till the clutch friction plate is clamped into the clamping groove, so that the triggering assembly pushes the driving connecting assembly to be connected with the rotating shaft. The machining device for the automobile parts has the effects that workpieces with the flatness not meeting the standard can be prevented from being machined, and invalid machining is prevented.

The invention discloses a double-plate high-performance nanocarbon dry clutch, and relates to the technical field of vehicle clutches. The double-plate high-performance nanocarbon dry clutch comprises a flywheel disc, a clutch shell is fixedly connected to the front face of the flywheel disc, an action sliding sleeve is rotationally connected to the front face of the clutch shell, an output sliding shaft is rotationally connected to the action sliding sleeve through a bearing, and the clutch disc is slidably connected to the back face of the output sliding shaft; the back face of the flywheel disc is rotationally connected with a press-fit stabilizing mechanism, and the front face of the press-fit stabilizing mechanism is fixedly connected with a cooling dredging mechanism. According to the double-plate high-performance nanocarbon dry clutch, by arranging the press fit stabilizing mechanism, the cooling dredging mechanism and the heat insulation and heat preservation mechanism, the pressure between the flywheel and the clutch disc is increased, indirect adsorption is conducted on the clutch disc, the contact area between the clutch disc and the surface of the flywheel disc is maintained, and the heat dissipation effect and the transmission stability of the clutch are improved.

Disclosed are an input drum assembly for improving performance of a 68RFE transmission and a method. The cooling and lubricating efficiencies of the input drum assembly in the 68RFE transmission can be improved by an input drum assembly and / or transmission housing; mounting spaces of clutch plates and clutch friction discs can be increased by the input drum assembly, so that thicknesses of the clutch plates 14 and discs or the number thereof can be increased, and a torque borne by the 68RFE transmission can be increased finally; a reinforcing rib is increased when the transmission housing is cast, so that the overall strength of the transmission housing can be enhanced; and an inner wall is cut after the transmission housing is cast, so that a diameter of the input drum assembly can be increased, thereby increasing diameters of the clutch plates and discs, and finally increasing the torque.

The utility model provides a dry clutch and an engine, which comprise a gland and a flywheel, and further comprise a mounting disc arranged on the side surface of the gland and coaxially arranged with the gland; the heat dissipation fins are evenly arranged on the end face of the installation disc in the circumferential direction of the installation disc, and a heat dissipation air channel allowing airflow to pass through is formed between every two adjacent heat dissipation fins. All the heat dissipation fins can be installed on the side face of the gland under the action of the installation disc, so that the multiple heat dissipation fins and the gland form a whole. Meanwhile, in the rotating period of the gland, all the heat dissipation fins do circular motion with the gland as the axis, surrounding air is driven to flow through a formed heat dissipation air channel, and therefore the heat exchange rate of internal air flow and the outside can be increased, the working temperature is effectively controlled, and the service life of the radiator is prolonged. The risk of material fatigue, deformation or damage caused by overheating is reduced, the service life of the pressing disc, the flywheel and other components can be prolonged, and the stability of vehicle gear shifting and power transmission is ensured.

A power transmission device (K) is provided with: a clutch member (4) that holds a plurality of driven-side clutch plates (7) arranged alternately with drive-side clutch plates (6); and a centrifugal clutch mechanism (9) that, when the weight member (10) is located at the outer diameter side position, causes the drive-side clutch plate (6) and the driven-side clutch plate (7) to press and come into contact with each other to make it possible to transmit the drive force of the engine (E) to the drive wheel (W), and that, when the weight member (10) is located at the inner diameter side position, causes the drive force of the engine (E) to be transmitted to the drive wheel (W) by pressing and contacting the drive-side clutch plate (6) and the driven-side clutch plate (7). The pressing contact force between the driving side clutch plate (6) and the driven side clutch plate (7) is released, and transmission of the driving force of the engine (E) to the driving wheel (W) can be cut off. A pressing contact force increasing mechanism (20) that generates a second pressing contact force that increases the pressing contact force between the drive-side clutch plate (6) and the driven-side clutch plate (7) when the rotational force input to the input gear (1) is in a state in which the rotational force can be transmitted to the output shaft (3); and a suppression member (D) that suppresses the generation of the second pressing contact force when the rotational speed of the engine (E) is equal to or less than a predetermined rotational speed.

The invention relates to a vehicle braking system for a vehicle axle of a two-track vehicle, comprising a multi-disk brake or clutch (3) for each side of the vehicle, with an electrically controllable actuator (21) with which a braking function for vehicle braking while driving or a parking function when the vehicle is parked can be engaged / disengaged in the multi-disk brake or clutch (3). According to the invention, the vehicle braking system additionally comprises a parking lock (41), the locking pawl (43) of which can be brought into locking engagement with a locking gear (45). Each of the two actuators (21) is in a driving connection (50) with the locking pawl (43), such that when the parking function is engaged by at least one of the actuators (21), the locking pawl (43) can be adjusted into locking engagement.

A coupling assembly for a motor vehicle powertrain includes a rigid carrier and a wet friction material attached to a surface of the rigid carrier. The wet friction material includes a base material enclosing a fiber matrix and filler particles embedded in the fiber matrix; a binder embedded in the base material; and a colloidal silica coating applied to an outer surface of the base material.

The utility model provides an output end adjusting device which comprises a transmission shaft, a main clutch mechanism and an adjusting mechanism, and the main clutch mechanism is in power connection or disconnection with the transmission shaft to achieve the power output and cut-off process of an output end. The adjusting mechanism is used for controlling power connection or disconnection of the main clutch mechanism and the transmission shaft. The main clutch mechanism comprises a gear ring, a driving disc, a driven disc, a friction disc assembly and a pressing disc. The adjusting mechanism comprises an adjusting handle, a shifting fork shaft, a shifting fork, an adjusting bearing and a pressing claw assembly. The adjusting handle rotates to drive the shifting fork shaft to rotate, the adjusting bearing is pushed to axially move on the transmission shaft through the shifting fork, then the pressing claw assembly drives the pressing disc to axially move on the driving disc, the pressing disc, the driven disc, the friction disc assembly and the driving disc are driven to extrude one another to achieve integrated rotation, power of the gear ring is transmitted to the transmission shaft, and the transmission shaft is driven to rotate. The output end adjusting device provided by the utility model has the advantages of high adaptability and low use cost.

The utility model discloses a clutch cover assembly anti-rotation device, which comprises a gland, a diaphragm spring, support rings, a fastening component, a connecting component and a pressure plate, the diaphragm spring is fixedly connected with the gland through a rivet, the support rings are abutted against two sides of the diaphragm spring, the outer sides of the two support rings are respectively provided with a clamping groove, and the fastening component is fixedly connected with the pressure plate. The fastening assembly comprises a clamping seat inserted in the clamping groove and penetrating through the diaphragm spring, a clamping cover connected with the clamping seat through a screw, a first spring arranged at the top ends of the clamping seat and the clamping cover, an abutting block arranged at the top end of the first spring and a limiting rod arranged at the bottom of the abutting block, the connecting assembly is arranged on the inner side of the gland, and the pressing disc is arranged on the left side of the connecting assembly. According to the diaphragm spring, the fastening assembly is arranged, under the condition that using of the diaphragm spring is not affected, the problem that a rivet is prone to loosening after being used for a long time is solved, the fixing effect is improved, and meanwhile the diaphragm spring is detachable and convenient to replace and maintain.

To provide a friction material that exhibits superior wear resistance and fade resistance under high load conditions, among other frictional performance characteristics. [Solution] A friction material comprising a fibrous base material, a friction modifier, and a binder, wherein the copper content is 0.5% by mass or less in terms of copper element, the fibrous base material contains steel fibers, the steel fiber content is more than 20% by mass and less than 50% by mass, and the friction modifier contains titanium carbide powder.

A spring assembly for the clutch of an automatic transmission includes a plurality of springs residing between upper and lower retaining rings which are secured together with a plurality of fasteners. The spring assembly is compressed against the force of the springs when the clutch piston is applied to engage the clutch, and then expanded when the clutch piston is released to disengage the clutch. The fasteners of the spring assembly eliminate radial movement of the rings relative to one another and control the axial movement of either of the upper and lower spring retaining rings.