Abstract:
A mechanical selector device for a gear changing gearbox of a motor vehicle with a non-synchronized reverse gear has an axially displaceable idler gear, which is connected by means of a selector unit with a selector sliding sleeve, by means of whose axial displacement first a synchronizer clutch and subsequently a positive drive gear clutch of a forward gear can be operated. In order to facilitate the engagement of the idler gear when the gearbox driven shaft and the rotating layshaft are stationary, the selector sliding sleeve is connected with a slotted lever having a slot and being pivotable about a bearing axis fixed in location with respect to the gearbox casing and the selector unit is connected to a slot follower constrained to travel in the slot and having a movement path fixed with respect to the spatial axes of the gearbox casing--or vice versa. The slot has two neutral sections, each of which has a shape conforming to the movement path and an intermediate engagement section with a shape deviating from the movement path in such a way that when the reverse gear is selected, the slot follower passes from one neutral section into the other neutral section, passing through the engagement section, and thus operates exclusively the synchronizer clutch, bringing this into frictional connection over only a limited section of the engagement path.
Abstract:
A clutch disk for motor vehicle main clutches which is equipped with a disk member carrying the friction linings and torsionally elastically arranged with respect to a hub member, whereby for a multistage torsional elasticity, several springs or spring sets with different characteristics are arranged in windows of one of a hub flange or of the disk member and of a lateral sheet metal member rigidly connected thereto, which cooperate with correspondingly larger windows in the respective other part; friction damping devices are thereby coordinated to the springs, whereby one of the friction damping devices is operable in the idling range and the others are operable in the operating range and the start of operation thereof are determined by control means engaging in the corresponding windows or cooperating with the corresponding spring ends; at least three spring stages of continuously harder characteristics, one friction device for the idling range and two separate main friction devices with control members for the operating range are thereby provided in the clutch disk according to this invention, whereby the control members are so constructed and arranged that the friction disk for the idling range is coordinated to the control member for the first main friction device so that with the beginning of the second spring stage, in lieu of the idling friction device, the effect of the first main friction device commences and the effect of the second main friction device commences still within the range of the second spring stage in such a manner that its damping action starts in addition to the damping action of the first friction device already within the range of the second spring stage by a corresponding dimension of the control member with respect to the windows or spring ends of the third stage.
Abstract:
A clutch disk for motor vehicle main clutches, in which a disk member carrying the friction linings is torsionally elastically connected with a hub member, and in which several separate springs or spring sets with separate damping characteristics are provided; the springs or spring sets are thereby retained in windows provided in one of the two parts which are torsionally elastically connected with each other while the start of operation of at least one of the damping devices is determined by a sheet metal control member; a separate prestressed control spring is thereby coordinated to the control member.
Abstract:
A split flywheel for reducing the transmission of vibrations from the engine to the drive shaft at certain frequencies of the flywheel is provided. Included are two flywheel elements drivingly connected to one another wherein one of which is connected or can be connected in a driven manner to the engine and the other of which is connected or can be connected in a driven manner to the drive line. The resonant frequency of the split flywheel unit is well below the frequency of engine vibrations which occur during normal traveling, so that only slight amplitudes of vibration occur between the flywheel elements during normal travel operation. However, during start-up of the engine, the resonant frequency of the flywheel is passed through. The drive connection between the elements a slip clutch having a greater friction contact than the maximum torque of the engine, placed in series with a spring mounting and positioned between the two flywheel elements. The slip clutch becomes operative only when the resonant frequency of the flywheel is passed through.
Abstract:
Divided flywheel arrangements are disclosed with a spring arrangement, and preferably also a slip clutch arrangement, accommodated in a lubricant bath, which is formed by an annular space limited radially outwards only by parts which are stationary relative to one another. Centrifugal forces acting on the lubricant cannot therefore force the lubricant against seals between mutually movable parts. Certain disclosed arrangements do not accommodate these parts in a lubricant bath.
Abstract:
A detent mechanism for holding shifting members of a mechanical transmission gear system in different shifted positions. The shifting members may be formed as shifting rocker arms pivotable about a bearing for shifting gears of the transmission. A detent contour may be provided at each shifting rocker arm with the detent contour being adapted to be engaged by a resiliently flexible member. A fixed bearing is arranged between the shifting rocker arm with the resiliently flexible member being constructed as a flat spring resting on the bearing and having free ends thereof counterbearing on the detent contours of the respective shifting rocker arms.
Abstract:
A clutch disc for motor vehicle main clutches with a disc member carrying the friction linings and torsionally elastically arranged with respect to a hub member, whereby for a multi-stage torsional elasticity, several springs or spring sets with different characteristics are arranged in windows of a hub flange and of the disc member as well as of a side plate rigidly connected therewith; friction devices are thereby coordinated to the springs, whose starting point of operation is determined by a sheet metal control plate which with tabs, arms or the like engage into the corresponding windows and/or cooperate with the spring ends; at least one friction device coordinated to a harder spring stage is thereby moved up in its operation into the range of the preceding softer spring stage by a corresponding predetermined play of the respective control plate with respect to the corresponding windows or spring ends.
Abstract:
A control member for a clutch disk of motor vehicle main clutches in which a disk member carrying the friction linings and a lateral member rigidly connected therewith are operatively torsionally elastically connected with the flange of a hub member; several springs or spring sets of different characteristics are thereby retained in the windows of one of the two parts torsionally elastically connected with each other and engage in windows of the other part while frictional damping devices are provided, whereby the start of opertion of at least one damping device is determined by a control member which engages with tabs, arms or the like in the windows intended for the accommodation of the springs or cooperates with the spring ends; the control member includes an approximately radially extending fork-like arm whose two fork ends are bent over along their radial edges, as viewed in the axial direction, and therewith enclose a control spring; these bent over portions are supported at their radial inner ends with respect to the annular portion of the control member while two essentially mutually oppositely disposed axial angularly bent portions are provided, offset in the direction of rotation with respect to the fork like arm, for engagement in corresponding windows of the hub flange.
Abstract:
A clutch disk for motor vehicle main clutches, in which a disk member carrying the friction lining is torsionally elastically connected with a hub member, whereby several springs or spring sets with separate damping devices are provided and the springs are retained in windows of one of the two parts that are torsionally elastically connected with each other and cooperate with larger windows in the other of these two parts; the start of operation of at least one of the damping devices is thereby controlled by a plate-like sheet-metal control member; at least one of the springs or spring sets is thereby retained in the hub portion and the larger windows coordinated to these springs are provided in the lateral sheet metal members connected with the disk member.The present invention relates to a clutch disk for motor vehicle main clutches, in which a disk member carrying the friction linings is torsionally elastically connected with a hub member, whereby several springs or spring sets with separate damping devices are provided and the springs are retained in windows provided at one of the two parts torsionally elastically connected with each other and cooperate with larger windows in the other part, and whereby the start of operation of at least one damping device is controlled by a plate-like sheet-metal control member which engages into the corresponding windows.With the known clutch disks, the springs or spring sets are retained in windows of the two plate-like lateral sheet metal members which are non-rotatably connected with each other to rotate in unison and which are operatively connected with the disk member carrying the friction linings. The springs then cooperate with larger windows which are located in the hub flange. The latter is additionally provided with apertures for the bolts which rigidly connect the two plate-like lateral sheet metal members with each other and with the disk member.This known arrangement has far-reaching disadvantages. At the outset, only a limited space for the different windows is available in the hub flange.The choice of the springs and/or the angle of rotation coordinated to the spring stages is therefore limited. Furthermore, the construction of the clutch disk becomes additionally complicated in that the damping devices, with the exception of the device provided for the idling speed, have to be combined on separate hub portions of the sheet metal control members. The manufacture and the assembly becomes more expensive in this manner.The present invention is concerned with the task to avoid the described disadvantages. Consequently, a clutch disk is to be realized which provides a greater freedom in the selection of the springs and spring stages for the design engineer. Furthermore, the present invention aims at so further simplifying the construction that a simple manufacture and assembly results.The underlying problems are solved according to the present invention in connection with the aforementioned clutch disks in that at least one of the springs or spring sets is retained in the hub part and the larger windows coordinated to these springs are provided in the plate-like lateral sheet metal members connected with the disk part.This construction according to the present invention entails the advantage that the larger windows are now distributed from an overall point of view over the hub flange and the lateral sheet metal members. It is quite within the purview of the present invention if several springs or spring sets are retained in the hub flange. Under certain circumstances, one may even arrive at an alternating arrangement of the springs of the different spring stages. The larger windows for the springs may now be arranged far more readily, they may under certain circumstances even overlap--as viewed in the axial direction. The design engineer therefore has a great deal more freedom in the selection of the spring stages, of the spring characteristics and of the angle of rotation.The inventive concept is applicable--as must be particularly emphasized--in principle to any desired spring or to each spring set in clutch disks quite generally. With those clutches, in which the start of operation of a damping device is controlled by a plate-like sheet metal control member, the present invention prefers a solution according to which each spring cooperating with a sheet metal control member is retained in a flange of the hub member. One thereby obtains the additional advantage that now all elements of the damping device or devices can be assembled by mounting over the hub member. Complicated shapes and configurations for the plate-like sheet metal control member are thereby no longer required. To that extent, the manufacture and assembly are simplified quite considerably.Finally, it is additionally proposed that the sheet metal control member surrounds the spring coordinated thereto by means of a balcony-like indentation or embossment which also projects into the larger window in the lateral sheet metal member disposed on the same side. In this manner, one realizes a simple lateral retention for the springs.Of course, with the construction according to the present invention, the sheet metal control member may also be so constituted by a corresponding play or clearance advance with respect to the windows that a so-called "advanced damping" results. Also the arrangement of several plate-like sheet metal control members is feasible. As to the rest, the further advantage also results that the friction damping of the first damping device--and also of the possibly still following devices--remains effective respectively over the entire range of rotation. This means that the following damping devices can build up always on the preceding damping device or devices. This results in more light-weight springs or in general in a smaller construction of the respectively following damping devices.Accordingly, it is an object of the present invention to provide a clutch disk for motor vehicle main clutches which avoids by simple means the aforementioned shortcomings and drawbacks encountered in the prior art.Another object of the present invention resides in a clutch disk for motor vehicle main clutches which ensures greater freedom in the selection of the springs and/or the angles of rotation coordinated to the spring stages.A further object of the present invention resides in a clutch disk for motor vehicle main clutches which results in a simplified construction, rendering less costly the manufacture and assembly thereof.A still further object of the present invention resides in a clutch disk of the type described above in which the larger windows for the springs can be more readily arranged in the various parts.Another object of the present invention resides in a clutch disk for motor vehicle main clutches which permits more light-weight springs and smaller constructions of at least some of the damping devices.
Abstract:
In a gear-shift device for a change-speed gearbox, a shift actuator, a selection actuator, an actuator which is arranged such that it can be displaced exclusively axially with regard to a housing, an auxiliary transmission for converting a rotary motion into a reciprocating motion, a brake which is connected to the selection actuator and an engageable and disengageable locking device are arranged in terms of their action in such a manner that two of the three actuators are arranged fixed in terms of movement with respect to one another and are connected to the third actuator by the auxiliary transmission, and the selection actuator is fixed either in a rotationally fixed or axially undisplaceable manner with regard to the housing.