EP3262322A1

EP3262322A1 - Shifting device for an automatic gearbox of a motor vehicle

Info

Publication number: EP3262322A1
Application number: EP16705547.4A
Authority: EP
Inventors: Thomas Schmidt; Martin Blücher
Original assignee: Kuester Holding GmbH
Current assignee: Kuester Holding GmbH
Priority date: 2015-02-24
Filing date: 2016-02-22
Publication date: 2018-01-03
Also published as: CN107250619A; CN107250619B; DE102015102607A1; US20180023687A1; WO2016135085A1; US10465792B2

Abstract

The invention relates to a shifting device (2) for an automatic gearbox of a motor vehicle, having a housing (4) and a selector lever (6) which is guided in the housing (4) and is provided for selecting a gear stage of the automatic gearbox, wherein the shifting device (2) has an automatic shift gate and a sequential shift gate, wherein the housing (4) has fastening means (10.2, 10.3, 10.4, 10.5) for fixing the shifting device (2) in the motor vehicle, wherein the fastening means (10.2, 10.3, 10.4, 10.5) are arranged in such a way that the housing (4) can be fixed in a first position and in a second position which is rotated by 180 degrees relative to the first position, wherein the fastening means (10.2, 10.3, 10.4, 10.5) are arranged point-symmetrically in order to rotate the shifting device (2) by 180 degrees, with the result that the respective fastening points coincide with the original fastening points after the rotation and the fastening means (10.2, 10.3, 10.4, 10.5) are fixed on in each case the same motor vehicle-side fastening points.

Description

Designation: Switching device for an automatic transmission of a motor vehicle Description

Hereinafter, a switching device for an automatic transmission of

Motor vehicle described having a housing and a run in the housing Wählhebei. With the help of the selector lever, a gear stage of the automatic transmission can be selected. The switching device has two Schaitgassen, of which one automatic shift gate and the other a

Sequence shift gate is. The housing of the switching device has fasteners for fixing the switching device in the motor vehicle. The fasteners are arranged so that the housing in a first position and in a relative to the first position rotated by 180 degrees second position can be fixed.

State of the art

Schaitvorrichtungen of the aforementioned type are known in the art.

Since there are both countries with right-hand traffic and with left-hand traffic, motor vehicles are designed as left-hand drive vehicles and right-hand drive vehicles. This means that the interiors have to be designed in duplicate, yes! for the right-hand drive vehicles and once for the left-hand drive vehicles

Vehicles. It is the endeavor of vehicle manufacturers to use as many identical parts as possible in both variants in order to keep the development and component costs as low as possible.

However, there are ergonomic requirements that require certain functions to be arranged mirror-symmetrically for the two variants. One of the functions relates to the design of a selector lever device with two

Switching lanes. So it may from ergonomic point of view Shear devices with two shift gates may be required such that the respective corresponding shift gates are in the same relative position to the driver for left-hand drive vehicles as for right-hand drive vehicles. So if the automatic shift gate should be positioned closer to the driver, this applies to both Ausrächtungen. The sequential shift gate should then be positioned further away from the driver in both variants. The same applies of course to the reverse ergonomic requirements.

From DE 198 53 934 B4 a switching device for an automatic transmission with sequence switching capability is known in which a Wähihebei in a

Automatic shift gate for selecting automatic transmission stages and at least one sequence shift gate for manual up and down shifts of

Gear stages can be moved, the switching device three

has adjacent, substantially parallel aligned movement spaces in which the selector lever can be moved, wherein the average movement space is provided for selecting the automatic transmission stages and the two adjacent movement spaces as an alternative

Sequence shift lanes for left or right-hand drive operation with the same

Schaitfunktion are provided. An adaptation to the particular use in a left-hand drive and a right-hand drive motor vehicle is then carried out via each adapted Schaltkuiissen that switching to one of the two

outside shift gates does not allow, but only a movement of the selector lever between automatic shift gate and one of the two

Sequence shift gate.

Disadvantage of this prior art is that the switching device has a relatively high space requirement. Namely, the switching device must have three switching gates available, of which, however, only two can be used in each configuration. The third shift gate always remains unused.

From DE 196 08 981 A1 discloses a switching device for a transmission of

Motor vehicles with a housing and a lever can be seen. There are Provided sensors that pass a signal corresponding to the switching position of the shift lever signal to a control unit of the transmission. A shift axis is in the vehicle transverse direction orthogonal to a selection axis in the vehicle longitudinal direction, wherein the shift lever is pivotally mounted about both axes. The disadvantage here is in particular that the switching device is not suitable for installation in both a left-hand and in a right-hand drive vehicle, since the courses to be selected would be set contrary to the usual shift schemes.

From DE 10 2008 028 618 B3 an electromechanical transducer device for controlling at least one function of a spatially remote transmission is known, which has a pivotally actuated lever, which is mechanically decoupled from the gear to be controlled. Rotation angle sensor elements are used to determine an angular position of the lever. However, the encoder device is not optimized in terms of their space requirement while being suitable for iinksgelenkte and right-hand drive vehicles.

task

The object of the invention is thus to provide a switching device for a

Automatic transmission of the type mentioned in such a way that it can be used for Iinksgelenkte and rechtsge! Enkte motor vehicles and thereby has a smaller footprint than known switching devices and its costs can be kept low by a high degree of mixed light.

The object is achieved by a switching device according to claim 1.

Further embodiments of the switching device are the subject of the dependent claims. An inventive switching device for an automatic transmission of

Motor vehicle has a housing, with which the switching device in the Motor vehicle is festiegbar. in the housing, a selector lever is provided, which is provided for selecting a transmission stage of the automatic transmission.

The switching device has an automatic shift gate and a

Sequence shift gate on. The automatic lane allows the selection of a corresponding gear, z. B. forward drive, reverse drive or even Neutra! or parking position. The sequence shift gate may be provided to allow manual selection of a gear stage of the automatic transmission, which may be sequentially upshifted and downshifted. For both switching operations are in the order! different switching directions provided, e.g. Upshifting and downshifting to the front or vice versa.

If a slotted guide is provided for the Wähihebel, the two shift gates can be connected by a connecting lane.

The shift gates can be determined for example by a slotted guide. Alternatively or additionally, the selector lever can be guided on a detent plate which has detent points and / or guideways.

Furthermore, it is provided that the fasteners are arranged on the housing such that the housing in a first position and in a relative to the first position rotated by 180 ° second position fixable aste. The

Rotary axis to transfer the switching device from the first position to the second position is determined so that the selector lever remains bemäenbar in both positions for a driver, so does not protrude inward. Such axes of rotation may be predominantly or completely aligned perpendicular to the possible selector lever movements. In embodiments in which the Wähihebel a

Having guide rod, the axis of rotation in the majority or completely zusammenfailen with the extension direction of the selector lever.

The fasteners are fixed to each of the same motor vehicle side attachment points. This can be achieved that the appropriate substructure for fixing for both variants, Rechtsienker and left-hand drive, can be identical.

With the help of such a designed switching device, it is possible, this sovoh! to use in both right-steered and in left-steered vehicles, since the switching device can be installed either in the one orientation or in the other orientation depending on whether the respective motor vehicle is a right-handed or a left-leaning motor vehicle. Thus, at least the same housing can be used for both variants, which increases the number of identical parts and reduces the necessary model variants.

In addition, the invention provides that the fasteners for rotating the switching device are arranged point-symmetrically by 180 degrees, so that the respective attachment points after rotation with the original

Fixing points coincide and the fasteners are fixed to each of the same motor vehicle side attachment points.

The advantage here is that the axis of rotation for transferring the switching device from the first position to the second position is determined so that the selector lever remains operable in both positions for a driver, so does not protrude inward. By fixing the fasteners to each same

Motor vehicle-side attachment points may be the appropriate

Substructure for fixing for both variants, Rechtsienker and

Left-hand drive, be identical. As a result, the switching device can be used both in rechtsgeienkten and in left-hand drive vehicles. Because the switching device can, depending on whether the respective motor vehicle is a right-hand or a left-hand drive vehicle, either in one

Orientation or in the other orientation. Thus, at least the same housing can be used for both variants, which increases the number of identical parts and reduces the necessary model variants. In a first further embodiment, it can be provided that the fasteners are arranged on fastening projections. The

Mounting projections may be formed projecting from the housing. This facilitates the determination of the housing in the motor vehicle in different positions. The attachment projections may each be one or more

Have fasteners such that all fasteners are attached to a common attachment projection, e.g. a mounting collar can be arranged. The mounting collar can form a mounting bracket.

In a further possible embodiment it can be provided that the selector lever has a center position which coincides with a symmetry center of the point symmetry. Thus, the selector lever has the same relative position regardless of the installation position of the Schaltvornchtung. This makes it possible to place the selector lever in both orientations in each case at the same point, so that there are no differences ergonomically for articulated and right-handed vehicles.

In a further possible embodiment of the switching device can be provided that the center position is monostable. This means that the selector lever always or at least, if it is in the automatic shift gate, automatically returns to the center division or is returned after releasing. For the sequence shift gate may be provided in some embodiments, a second stable position in which the selector lever returns after pressing.

Monostability can be achieved for example by elastic or elastic elements or Rückstellmotorik. Another possible embodiment of the switching device sees a

Select lever sensor that detects the position and / or the movements of the selector lever. The information of the Wähihebelsensorik can be different Purposes are used. On the one hand, with the help of the appropriate

Information to register the Wählvorgaben for an on-board computer, so that it can display, for example, in a display the respective designated driving level. On the other hand, can thus generate in the absence of mechanical coupling of the selector lever to the automatic transmission Stelisignaie, with the help of which a servomotor can insert the desired gear on the automatic transmission.

A corresponding selector lever sensor can be formed in one embodiment by means of magnets and Hall sensors. A Hall sensor can detect the relative position of a magnet to the sensor by measuring the magnetic field strength of the magnet. By arranging two or more Hall sensors in an expedient manner, directions of movement can also be detected. The Hall sensor or sensors may be arranged fixed to the housing, whereas the magnet or magnets may be associated with the selector lever, so that they move when the Wähihebel is moved. This requires that the magnets move past the one or more Hall sensors when the selector lever is moving, thus resulting in changing field strengths on or at the Hall sensors. In such an arrangement, the sensor system can the two Schaitgassen based on the distance of the magnet or relative to the or the sensors

differ. Due to a greater distance in the more distant shift gate, the field strength at or on the sensors is lower. A corresponding sensor system can be combined, in particular, with monostable selection levers, which always assume the same position or, depending on the configuration, one of two preferred positions (duo-stable), and are only deflected by this or these for step selection. In a further embodiment, the selector lever sensor with a

Control is connected, wherein the controller is adapted to interpret movements and / or positions of the selector lever relative to Einbauiage. The Control can perform an interpretation of the signals of the sensor and generate therefrom control and / or status signals that can be issued by the switching device to the outside.

In some embodiments, the controller may also assume other functions. Such functions may include controlling servomotors possibly provided in the switching device which may serve to move and / or lock the selector lever.

The controller may be arranged in or on the switching device. In other embodiments, the controller may also be arranged separately.

A further aspect of the switching device may provide that the

Control memory means for storing a

Serve computer program product. Furthermore, a processor may be provided which is used to execute the computer program product.

It is provided that the computer program product is adapted to the installation direction of the switching device. Due to the possibility of installation in mutually rotated by 180 degrees positions are the respective

Actuating directions are rotated relative to the switching device and thus a precisely opposite interpretation is needed.

The adaptation of the computer program product in the installation direction can be done in several ways. On the one hand, an automatic identification of the installation direction can be provided, so that the computer program product automatically detects corresponding information which is to be interpreted exactly opposite to the installation direction of the switching device.

In another embodiment, the computer program product can be programmed such that it corresponds to both installation directions

Subroutines has. The installation direction can then with half of

Configuration files are determined. The configuration files can be stored in the memory or retrieved from the motor vehicle, in which in a vehicle control information about the vehicle including right-hand drive or left-hand drive can be stored.

In a third variant, the computer program product may be specific to a direction of installation, wherein the appropriate computer program product is loaded onto the memory depending on the installation direction provided in each case.

In a further possible embodiment of the Schaltvorrächtung a mechanical locking for the selector lever for fixing the Wähihebels be provided outside the center pitch of the selector lever. Some

Vehicle manufacturers want this to externally visibly indicate a locking of the selector lever. This position is then usually at both

Einbauvaräanten, so right and left-hand drive, be the same relative to the motor vehicle. For example, so the selector lever in each case in relation to the

Center division forward inclined position to be locked.

This requires that Gegenverriegelungsmittel on the selector lever, for example

Recesses, must sit eccentrically to the housing side locking means. If the locking direction as described above, for example, coincide with the direction of travel of the motor vehicle, the

Locking position of the selector lever the forward inclined position.

If the shifter is to be installed rotated 180 degrees, this would require that the Wähihebel would be locked in the relative to the direction of travel inclined backward position, which is not desirable.

The Gegenverriegelungsmittel of the selector lever must therefore in the off-center locking variant, taking into account the installation direction of the

Switching device configured. In one variant, the

Counter locking means be provided on both sides of the Wähihebels. The counter locking means may also be dimensioned to act in both directions. Then an examination of the orientation of the Selector lever done before locking the Wählhebeis done to

to ensure that the selector lever 6 is in the correct locking position. In another variant, this circumstance can be taken into account by using a selector lever adapted to the installation direction. Of the

Selector lever can the respective, with the housing-fixed Arretiermittein

having cooperating locking means at the respective appropriate positions. By using the appropriate selector lever! the design effort for right-handed and left-handed variants is kept low.

In one possible embodiment, a section of the selector lever projecting into the housing for the first installation direction may be mirror-symmetrical to the corresponding section of the selector lever in the second installation direction. By this corresponding mirror symmetry, the locking means can be brought to the selector lever in the correct position to the housing-fixed locking means.

Other objects, advantages, features and applications of the present invention will become apparent from the following description of a

Embodiment with reference to the drawing. All described and / or illustrated features alone or in any meaningful combination form the subject matter of the present invention, also independent of their summary in the claims or their dependency.

The invention will be explained with reference to an embodiment. Here are shown schematically:

Figure 1 is a perspective view of a switching device for a

Automatic transmission of a motor vehicle, FIG. 2 shows a plan view of the switching device,

Figure 3 is a perspective view of the switching device without external

Casing,

Figure 4 is a side view of the switching device without housing, Figure 5 is a sectional view through the switching device without housing, Figure 6 is a further sectional view through the switching device without

Casing,

Figure 7 is a perspective view of the switching device without external

Housing with a lock,

Figure 8 is a perspective view of the Schaitvorrichtung without external

Housing of Figure 7 with optional locking and

9 shows a selector lever

Figure 1 shows a schematic perspective view of a switching device 2 for an automatic transmission of a motor vehicle. The switching device has a housing 4. On the housing 4, an opening 4.1 is provided, from which a Wählhebei 6 protrudes. The selector lever 6 is used to select a gear stage of the automatic transmission.

In Figure 1, a Bezugsrichiung B is indicated, which may be front or rear depending on the installation direction. Depending on the configuration, moving the selector lever 6 in the direction B or counter to the direction B different driving levels, for

Example forwards, reverse, neutral or parking position. In addition, the selector lever 6 can be moved in a direction perpendicular to B to be transferred to a sequential shift gate. In this

Sequence shift gate can in turn be effected by moving the Wähihebeis 6 in the direction B or against the direction B upshift or downshift.

The selector lever 6 is shown in its center position. The center position is present bistabii. The selector lever 6 returns after a deflection of the

Automatic shift gate in direction B or opposite to direction B automatically returns to center position. In the sequence shift gate, there is another stable point, in which the selector lever 6 returns after actuation. The

Center position, however, the starting position.

The housing 4 connects to a circuit board 8, which has control electronics and sensors. Furthermore, one or more connections for supplying the switching device 2 with current and for the transmission of switching pulses can be provided on the circuit board 8.

The housing 4 has fastening projections 4.2 to 4.5. on. To the

Fixing projections 4.2 to 4.5 are each formed recesses 10.2 to 10.5. The switching device 2 is using the recesses 10.2. can be fixed to 10.5 in the motor vehicle, for example using appropriate screws. Alternatively it can be provided that in the motor vehicle

Studs are formed, to which the switching device 2 with the

Recesses 10.2 to 10.5 postponed and then fixed, for example by screws or clamps.

Figure 2 shows a plan view of the switching device 2. The recesses 10.2 to 10.5 are all configured circular and each have centers represented by crosses. The recesses 10.2 to 10.5 are arranged on the housing, that this once in the illustrated Orientation to the reference direction B and once in a rotated by 180 ° in the sheet plane position can be installed for this purpose.

In the illustrated embodiment, the recesses 10.2 to 10.5 rotationally symmetrical about the point M are arranged. M is the same time

Center position of the selector lever 6, which in Figure 2 with an offset to

Center position M is shown.

FIG. 3 shows a perspective view of the switching device 2 without housing.

The selector lever 6 is guided by means of a universal joint 12. By the

Universal joint 12, the selector lever 6 can be moved in different directions. A control is not shown for better visibility of the other components, see Fig. 7.

Figure 4 shows a side view of the switching device 2 against the

Viewing B.

Hall sensors 14, which detect the magnetic field of magnets 16 arranged on the universal joint 12, are arranged on the circuit board 8. By movements of the selector lever 6, the magnet 16 is also moved, the position of the movement of the magnet 16 relative to the Hall sensors 14 can be detected by these. So it can be determined whether the selector lever 6 in or against the

Reference direction B is moved and how its current position.

The selector lever 6 is located in the illustration in Figure 4 in a

Automatic shift gate, which is represented by the line 18. However, the selector lever 6 can also be pivoted to a sequence shift gate 20. By pivoting the Wählhebeis 6 also changes the distance of the magnet 16 from the neck sensor 14. The detected field strengths in the rest position and in the Movement are therefore weaker at the Hall sensor 14, whereby it can register the position of the selector lever 6 in the sequence shift gate 20.

Furthermore, a servomotor 22 is provided, which can have various functions via a worm gear 24, with which an eccentric which is not recognizable in this view, can have different functions. With the help of the eccentric can

For example, a movement of the selector lever 6 in the Sequenzschaitgasse 20 can be prevented. Furthermore, it is possible to push the selector lever 6, if necessary, into the automatic shift gate 18.

FIG. 5 shows a sectional illustration through the switching device 2.

The Wähihebel 6 shows a relative to the universal joint 12 fixed part 6.1 and a relative to the fixed part 6, 1 movable lower part 6.2 with a tip 6.3. Between fixed part 6.1 and movable part 6.2, a spring 26 is arranged, which biases the movable part 6.2 downward.

The tip 6.3 is guided in a guide plate 28. The guide plate 28 has a visible in section recess 30 which forms a latching resistor. The recess 30 defines the middle position M of the selector lever 6. The height of the

Resistance is determined on the one hand by the contour of the tip and the recess and on the other hand by the strength of the spring 26.

Figure 6 shows a further section through the switching device 2, wherein the section was performed at a tilted selector lever 6.

Two tracks 32, 34 are provided in the guide plate 28, the track 32 for the automatic shift gate 18 and the track 34 for the sequence track 20 being provided. The tip 6.3, not visible in FIG. 6, is guided by the tracks 32, 34. Figure 7 shows a perspective view of the switching device 2 without outer housing with locking.

In the switching device 2, a locking element 36 is on the housing side

arranged, which can be actuated by means of a solenoid 38. Lifting magnet 38 and locking element 36 are arranged coaxially with an axis of the universal joint 12 for space optimization in the presently illustrated embodiment. In other embodiments, other arrangements may be provided.

The locking element 36 can mechanically with the Wähihebel. 6

cooperate and lock this by the interaction when the Wähihebel 6 is in the middle division M. For this purpose, corresponding Gegenverriegelungsmittel not visible in Figure 7 are provided on Wähihebel 6, which must engage when the selector lever 6 is in Mittensteüung.

Furthermore, a controller 40 is shown with memory and processor, which serves to control the switching device 2. The controller 40 may evaluate signals from the Hall sensors 14 and actuate the drives 22 and 38 in the switching device 2.

In the memory of the controller 40, a computer program for controlling the switching device is executed, which is executed by the processor. The computer program takes into account the mounting orientation to derive corresponding control commands for the automatic transmission from the concrete movements of the selector lever 6 relative to the Hall sensors 14. The installation direction is stored here in a configuration file.

Figure 8 shows a perspective view of the switching device 2 without an outer housing with an optional lock. In this second illustration, the locking element 36 can be seen in engagement with a recess 42 formed as a counter locking means on the selector lever 6. Furthermore, in FIG. 8, the guide plate 28 with automatic shift gate 18 and sequence shift gate 20 can be seen.

Figure 9 shows a selector lever 6 detached from the other components. The movable part 6.2 know a hammer head 44, on which the recess 42 is arranged.

In a variant in which the locking of the selector lever 6 should be done eccentrically and in which the housing side arranged locking means is arranged in a line with the universal joint, the recess would have to be arranged off-center. Then specific selector lever variants would have to be provided for each installation direction.

LIST OF REFERENCE NUMBERS

2 shaft device

4 housing

4.1 opening

4.2 - 4.5 Fixing tabs 6 Selector lever

6.1 selector lever!

6.2 movable selection lever part

6.3 tip

8 board

10.2 - 10.5 recesses

12 universal joint

14 Hall sensors

16 magnet

18 automatic shift gate

20 sequence shift lane

22 drive

24 worm gears

26 spring

28 guide plate

30 deepening

32 train

34 train

36 locking element

38 Solenoid

40 control

42 recess

B reference direction

M center position

Claims

claims

1 . A transmission device for an automatic transmission of a motor vehicle, comprising a housing (4) and a selector lever (6) guided in the housing (4), which is provided for selecting a transmission stage of the automatic transmission, wherein the switching device (2) comprises an automatic shift gate (18) and a Sequence shift gate (20) and the housing (4) has fasteners (10.2, 10.3, 10.4, 10.5) for fixing the switching device (2) in the motor vehicle, wherein the fasteners (10.2, 10.3, 10.4, 10.5) are arranged such that the housing (4) can be secured in a first position and in a second position rotated by 180 degrees relative to the first position, characterized in that the fastenings (10.2,

10.3, 10.4, 10.5) for rotating the switching device (2) are arranged point-symmetrically by 180 degrees, so that the respective

Attachment points after rotation with the original ones

Fixing points coincide and the fixings (10.2, 10.3,

1 0.4, 10.5) are respectively fixed to the same vehicle-side attachment points.

2. Switching device according to claim 1, characterized in that the

Fasteners (10.2, 10.3, 10.4, 10.5) are arranged on fastening projections (4.2, 4.3, 4.4, 4.5).

3. Switching device according to claim 1 or 2, characterized in that the selector lever (6) has a Mittensteliung (), which with a

Symmetry center of point symmetry coincides.

4. Switching device according to claim 3, wherein the center position (M) is monostable. Switching device according to one of the preceding claims, characterized in that a selector lever sensor (14, 16) is provided, which detects the position and / or the movements of the selector lever (6).

Switching device according to claim 5, characterized in that with the selector lever sensors (14, 16) connected control (40) is provided, wherein the controller (40) is adapted to movements and / or positions of the selector lever (6) relative to the installation direction interpret.

Switching device according to claim 6, characterized in that the controller (40) storage center! for storing a

Computer program product and a processor for executing the computer program product, wherein the

Computer program product is adapted to the installation direction of the switching device (2).

Switching device according to one of the preceding claims, wherein a mechanical lock (36, 38, 42) for the selector lever (6) for fixing the selector lever (6) outside the center pitch (M) of the selector lever (6) is provided.

Switching device according to claim 8, wherein the selector lever (6) on the

Mounting direction is adjusted.

Switching device according to claim 9, wherein a protruding into the housing portion of the selector lever (6) for the first installation direction

is mirror-symmetrical to the corresponding portion of the selector lever (6) in the second installation direction.