DE102017122192A1 - Getriebeaktor with out of action actuatable portion of a shift shaft; Transmission system; Powertrain and motor vehicle - Google Patents

Abstract

The invention relates to a transmission actuator (1) for two transmission devices (2, 3) of a motor vehicle drive train (4), with a selector shaft (5) displaceable along its longitudinal axis (6) for selecting and shifting individual gears of the transmission devices (2, 3) and about the longitudinal axis (6) is rotatable, wherein the switching shaft (5) has a first actuating portion (7) for engaging and / or laying a gear of a first transmission device (2), further comprising a second actuating portion (8) on the switching shaft (5) is arranged and the first actuating portion (7) of the switching shaft (5) is rotatably coupled, so that an input and / or laying a gear of a second transmission means (3) by means of the second operating portion (8) of a switching state of a gear of the first transmission device (2) is unaffected. In addition, the invention relates to a transmission system (18) for a motor vehicle drive train (4), a drive train (4) and a motor vehicle (20).

Description

The invention relates to a transmission actuator for two transmission devices of a motor vehicle driveline, i. a drive train of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with a switching shaft which is displaceable for selecting and switching individual gears of the transmission devices along its longitudinal axis and rotatable about the longitudinal axis, wherein the switching shaft a first operating section for on and / or having a gear of a first transmission device. In addition, the invention relates to a transmission system with a first transmission device, a second transmission device and this transmission actuator, a drive train with the transmission system and a motor vehicle with the drive train.

Generic gear actuators are already well known from the prior art. In this context, the DE 10 2016 218 388 A1 a gear actuator for a manual transmission, wherein the gear actuator has two switching shafts.

However, a disadvantage of known gear actuators is that they are usually optimized, for example for use in a dual-clutch transmission, for purely internal combustion engine power drive trains. If an additional drive unit, for example in the form of an electric motor, is added to the drive train, the known systems often reach their limits with regard to the permissible installation space and / or the complexity.

It is therefore an object of the present invention to overcome the known from the prior art disadvantages and in particular to provide a gear actuator for switching two transmission devices available, which takes up as little space and is kept as simple as possible in the structure.

This is inventively achieved in that further comprises a second actuation portion arranged on the shift shaft / provided / mounted and the first operating portion of the shift shaft is rotatably coupled, so that a gear and / or laying a gear of a second transmission means by means of the second operating portion of a switching state a gear of the first transmission device is unaffected. Thus, in a decoupling position of the first operating portion, the second operating portion is movable independently of the first operating portion for engaging and / or disengaging the gear of the second transmission device.

Due to the torsionally coupled design of the first actuating portion, a particularly compact design of the gear actuator is realized, which can nevertheless switch / actuate two different transmission devices.

Further advantageous embodiments are claimed with the subclaims and explained in more detail below.

It is also advantageous if the first operating portion is part of a first shift lever and the first shift lever has a Auswerfsegment for laying out a gear of the first transmission device and / or a shift finger for engaging a gear of the first transmission device.

If the first actuating portion is rotatably mounted on an outer peripheral side of the switching shaft and / or (along the switching shaft) so as to be axially displaceable, it can easily be switched over into its uncoupling position.

In this regard, it is again advantageous if the second operating portion rotatably and / or non-displaceably connected to the shift shaft. The second actuating portion is also preferably also part of a (second) shift lever.

The first operating portion is further suitably by means of a spring device in a coupling position in which it is rotatably coupled to the shift shaft, biased / pressed / supported. As a result, the first operating portion is added without generating unwanted noise in operation.

In this context, it is also advantageous if the first operating portion is coupled in its coupling position directly via a rotational drive on the shift shaft or indirectly via a rotational drive on the second operating portion with the shift shaft rotation. This further simplifies the structure.

It is also advantageous if the first operating portion is supported in its Entkoppelstellung so on a housing-fixed, about gearbox fixed, stop, that the first operating portion is freely rotatable to the shift shaft. As a result, the Entkoppelstellung is realized with particularly easy to produce means.

The stop is preferably a radially inwardly projecting projection / shoulder of a housing of the gear actuator or more preferably a housing of a transmission / transmission system (gear housing). But the attack can also in the circuit system, ie in the Gear shift device or be integrated in the gear actuator.

Furthermore, the invention relates to a transmission system / gear arrangement for a motor vehicle drive train, comprising a first transmission device, a second transmission device and one for shifting, i. for engaging and / or laying the gears with the transmission devices operatively connected gear actuator according to at least one of the embodiments described above.

In this regard, it is also advantageous for the first transmission device to be a transmission which can be coupled or coupled to an internal combustion engine and for the second transmission device to be a gearbox that can be coupled or coupled to an electric motor.

Furthermore, the invention relates to a drive train for a motor vehicle, with this transmission system, an internal combustion engine, which is rotatably coupled or rotatably coupled to a transmission shaft of the first transmission device, and an electric motor which is rotationally coupled or drehkoppelbar with a transmission shaft of the second transmission device.

In addition, the invention relates to a motor vehicle with this drive train.

In other words, a USG is thus realized with the override of secondary operating elements (first operating section) of an "Active Interlock" / "Active Interlock" geared actuator (gear actuator). It is proposed for the control of a partial transmission (second transmission device), here the partial electric transmission, the "Active Interlock" override, so that the gears of the other (mechanical) sub-transmission (first transmission device) are not designed. The Active Interlock can be designed in several parts, for example in two parts. For engaging mechanical gears of the shift finger with the auxiliary operating elements (first operating portion) is firmly connected. This is canceled by overcoming spring forces when gears of the one (electric) sub-transmission are operated.

The invention will now be described in more detail below with reference to figures, in which context also different embodiments are illustrated.

• 1 eine Längsschnittdarstellung eines erfindungsgemäßen Getriebeaktors nach einem ersten Ausführungsbeispiel, wobei ein Bereich einer Schaltwelle sowie mehrerer durch diese Schaltwelle betätigbarer Gangschaltelemente des Getriebeaktors veranschaulicht ist und insbesondere zu erkennen ist, wie zwei an der Schaltwelle ausgebildete Betätigungsabschnitte in einer Koppelstellung eines lösbaren / entkoppelbaren ersten Betätigungsabschnittes miteinander in Wirkverbindung stehen,
• 2 eine Längsschnittdarstellung eines erfindungsgemäßen Getriebeaktors nach einem zweiten Ausführungsbeispiel, wobei wie in 1 der erste Betätigungsabschnitt in der Koppelstellung mit der Schaltwelle drehfest verbunden ist und zu erkennen ist, dass nicht wie in 1 die Koppelung des ersten Betätigungselementes mit der Schaltwelle mittelbar über das zweite Betätigungselement, sondern unmittelbar mit der Schaltwelle stattfindet,
• 3 eine perspektivische Darstellung eines Getriebesystems, in das die Getriebeaktoren nach den 1 und 2 prinzipiell einsetzbar sind, wobei ein Gehäuse des Getriebesystems von außen und insbesondere die Anbringpositionen des Getriebeaktors sowie eines Elektromotors zu erkennen sind,
• 4 eine perspektivische Darstellung des Getriebesystems, ähnlich zu 3, wobei das Gehäuse des Getriebesystems zusätzlich im Bereich des Getriebeaktors transparent ist, sodass die Schaltwelle und mehrere Gangschaltelemente zu erkennen sind, und
• 5 eine Draufsicht auf ein schematisch dargestelltes Kraftfahrzeug, aufweisend einen Antriebsstrang mit dem Getriebesystem nach den 3 und 4.

Show it:

• 1 a longitudinal sectional view of a gear actuator according to the invention according to a first embodiment, wherein a portion of a switching shaft and more operable by this switching shaft gearshift elements of the gear actuator is illustrated and in particular can be seen as two trained on the shift shaft operating sections in a coupling position of a releasable / decoupled first actuating portion with each other in Active compound,
• 2 a longitudinal sectional view of a transmission actuator according to the invention according to a second embodiment, wherein as in 1 the first operating portion is rotatably connected in the coupling position with the switching shaft and it can be seen that not as in 1 the coupling of the first actuating element with the switching shaft takes place indirectly via the second actuating element, but directly with the switching shaft,
• 3 a perspective view of a transmission system in which the transmission actuators after the 1 and 2 can be used in principle, wherein a housing of the transmission system can be seen from the outside and in particular the mounting positions of the gear actuator and an electric motor,
• 4 a perspective view of the transmission system, similar to 3 , wherein the housing of the transmission system is also transparent in the region of the gear actuator, so that the shift shaft and a plurality of gear shift elements can be seen, and
• 5 a plan view of a schematically illustrated motor vehicle, comprising a drive train with the transmission system according to the 3 and 4 ,

The figures are merely schematic in nature and are for the sole purpose of understanding the invention. The same elements are provided with the same reference numerals. Also, the features of the various embodiments can be combined freely with each other.

In 1 is a transmission actuator according to the invention 1 illustrated according to a first embodiment. The gear actuator 1 is part of a transmission actuator 17 , in addition to a multiple gear shift elements 23 and 24 having gear shift device 19 having. The gear actuator 1 is in 1 for the sake of clarity, only in the area of its switching shaft 5 shown. Several first gear shift elements 23 act with a first transmission device 2 together / are the first transmission device 2 assigned. A second gear shift element 24 acts with a second transmission device 3 together / is the second transmission device 3 assigned. The respective gear shift element 23 . 24 is implemented as a shift rail. The respective transmission device 2 . 3 forms a gearbox / partial transmission a transmission system 18 that in an exemplary embodiment in its entirety in the 3 and 4 is pictured, off. The respective transmission device 2 . 3 is implemented as a manual transmission. Even if in 4 the in 2 converted gear actuator 1 is used, it should be noted that this figure is only illustrative of the transmission system 18 and, of course, in the preferred embodiment, the gear actuator 1 to 1 or 2 having.

The gear actuator 1 / the gear actuator 17 is thus in operation for switching / actuating two transmission devices 2 . 3 a drive train 4 in the form of a hybrid drive train 4 , a motor vehicle 20 used. As in 5 The motor vehicle is clearly recognizable 20 , here a car, thus the transmission system 18 having drivetrain 4 on. In addition, an internal combustion engine 21 present in the form of a first drive unit, wherein the internal combustion engine 21 in the usual way via a coupling, not shown here for clarity, to the transmission system 18 / a transmission shaft of the first transmission device 2 is connectable. Also is an electric motor 22 in the form of a second drive unit, which in this embodiment on the transmission system 18 namely, on a transmission housing 28 of the transmission system 18 provided / integrated / attached. The electric motor 22 is by means of the second transmission device 3 also with the drive train 4 , such as a transmission shaft of the transmission system 18 , operatively connected or preferably permanently operatively connected. Typically, a transmission output shaft transmits 29 of the transmission system 18 (Also provides the transmission output shaft of the first transmission device 2 dar) during operation of the respective drive unit generated torque (optionally via a differential) on wheels 30 of the motor vehicle 20 ,

Coming back to 1 be particularly noted that the gear actuator 1 typically next to the selector shaft 5 also a in 1 for clarity, not shown, but in the 3 and 4 visible from the outside, on the shift shaft 5 adjusting acting adjusting unit 31 having. The adjustment unit 31 is designed so that it is the selector shaft 5 on the one hand in its axial direction, ie along its longitudinal axis 6 , Move, also in any (axial) displacement position rotatory about the longitudinal axis 6 can drive around. Thus, as in connection with 1 The different gear shift elements are easy to recognize 23 . 24 (by moving the shift shaft 5 along the longitudinal axis 6 ) are selected and switched, that is, on or designed (by rotating the switching shaft 5 around the longitudinal axis 6 ).

The shift shaft 5 according to the invention, both a first operating portion 7 as well as a second operating section 8th on. The first operating section 7 is part of a (first) shift lever 9 , The first shift lever 9 in particular, has a first operating section 7 forming shift finger 12 on. The first operating section 7 thus serves to engage the respective gear of the first transmission device 2 , Also ejection segments 11 for laying a gear of the first transmission device 2 are on the first shift lever 9 available. The second operating section 8th is again rotatable and non-slip on the stem 5 added.

Also the second operating section 8th is part of a (second) shift lever 10 that is adjacent along the shift shaft 5 to the first operation section 7 / the first shift lever 9 is arranged. Also the second operating section 8th is as a shift finger 12 educated. The second operating section 8th serves for engaging and disengaging the respective gear of the second transmission device 3 , The second operating section 8th / second shifter 10 is both displacement / in the axial direction of the longitudinal axis 8th firmly and non-rotatably with the switching shaft 5 connected / on an outer peripheral side 13 / Outer lateral surface of the selector shaft 5 attached.

According to the invention, the first operating section is now 7 , for the insertion and removal of the first gear shift elements 23 the first transmission device 2 is responsible, of the shift shaft 5 decoupled. In a decoupling position of the first operating section 7 is an engaging and disengaging a gear of the second transmission device 3 through the second operating portion 8th uninfluenced by a switching state, ie an input and / or interpretation, a gear of the first transmission device 2 , Conversely, in the decoupling position, the state of the first transmission device 2 unaffected by the operation of the second gear device 3 ,

The first operating section 7 / the first shift lever 9 is in principle rotatable on the outer peripheral side 13 the switching shaft 5 arranged. Also, the first operation section 7 / first shift lever 9 in the axial direction along the longitudinal axis 6 the switching shaft 5 slidably arranged.

In 1 is a coupling position of the first operating portion 7 illustrated. In this coupling position, the first operating section 7 non-rotatable with the selector shaft 5 coupled. For this purpose, at one of the first operating portion 7 facing side of the second operating portion 8th a rotary drive 15 educated. The rotary drive 15 points in the axial direction of the switching shaft 5 from one end of the second actuating section 8th projecting surveys 25 on. The surveys 25 engage in the coupling position positively in complementary to them formed grooves 26 (End grooves) in a second operating portion 8th facing end face of the first operating portion 7 one.

The coupling position is with a spring device 14 , here, for example, in the form of one or more compression spring / -n, namely helical compression springs, running secured. The first operating section 7 is by means of the spring device 14 supported in the coupling position / pressed / biased. Thus, the first operating portion 7 in this embodiment indirectly by means of the second operating portion 8th in the coupling position with the switching shaft 5 rotationally connected.

In a Entkoppelstellung, which is not shown here for clarity, is the first operating section 7 so along the shift shaft 5 shifted from the coupling position, that he disengaged from the rotational drive 15 has arrived and therefore from the shift shaft 5 and the second operating portion 8th is torsionally coupled. In the decoupling position is the first operating section 7 / the first shift lever 9 on a housing-fixed stop 16 , which is executed gearbox fixed in this embodiment, in the axial direction of the shift shaft 5 at. In addition, the stop includes 16 a groove, so that the (first) shift finger 12 held in rotation and remains in its position. This is simply switched from the coupling position in the Entkoppelstellung by the shift shaft 5 is moved and the first operating section 7 / the first shift lever 9 at a certain displacement of the shift shaft 5 due to the attachment to the stop 16 from the rotary drive 15 is decoupled. As a result, in the decoupling position of the first operating section 7 the second operating portion 8th / Shifter 10 free relative to the first operating section 7 / Shifter 9 rotatable. The insertion and removal of the second transmission device 3 / the second gear shift element 24 thus remains unaffected by the switching state of the first operating portion 7 / the first transmission device 2 ,

In the 2 is a further second embodiment of the transmission actuator according to the invention 1 illustrated. The second embodiment is, unless otherwise described, as the first embodiment constructed and functioning. Unlike in 2 is the first operation section 7 no longer indirectly via the second operating section 8th non-rotatable with the selector shaft 5 coupled in the coupling position, but directly by means of a switching shaft 5 converted rotational drive 15 , For this purpose are directly on the outer peripheral side 13 the switching shaft 5 several in the radial direction outwardly projecting / from the switching shaft 5 projecting surveys 25 , For example, implemented in the form of pins, provided. The surveys 25 engage in the coupling position again form-fitting in the direction of rotation in the complementary to them formed grooves 26 / Endnuten in the first operating portion 7 one. The grooves 26 are on a second operating section 8th facing away from the first operating portion 7 intended. Similar to the first embodiment, is from a certain displacement of the shift shaft 5 the first operating section 7 from the selector shaft 5 decoupled. These are the surveys 5 / the rotary drive 15 in the decoupling finally disengaged from the grooves 26 , Instead, there are the surveys 25 wherein the first operating portion 7 again at the stop 16 is present, each in a recess 27 (here in the form of a bore) of the gear housing 28 , In the recess 27 are the surveys 25 preferably in the gear housing 28 pushed in that a free rotation of the stem 5 relative to the first operating portion 7 is possible. The first operating section 7 However, this is due to the ejector 11 in a relative position to the transmission housing 28 defined in direction of rotation.

In the 3 and 4 is then again the use of the gear actuator 1 in the transmission system 18 illustrated. The transmission system 18 has a conventional transmission in the form of the first transmission device 2 on. The first transmission device 2 serves as a torque converter between an internal combustion engine side transmission input shaft and the transmission output shaft 29 , The second transmission device 3 is implemented as a manual transmission and realized as a two-speed transmission. The second transmission device 3 serves as a torque converter one of the electric motor 22 fed torque towards the transmission output shaft 29 , For switching the transmission devices 2 and 3 acts the gear actuator 1 according to the above-described operation by means of the respective gear shift element 23 . 24 adjusting to the gears of the transmission devices 2 and 3 one.

In other words, the first shift lever 9 According to the invention changed so that the ejector functionality when selecting the electric shift rail (second gear shift element 24 ) is deactivated. The mechanical gears (gears of the first gearbox 2 ) are then when switching the electrical gears (gears of the second transmission device 3 ) no longer designed and the two gears 2 . 3 can be switched completely independently of each other.

In a first constructive training 1 is on the shift shaft 5 one gear actuator 1 a (first) shift lever 9 rotatably mounted. A second lever 10 is with the selector shaft 5 firmly connected. The rotatably mounted shift lever 9 is about a spring 14 axially against the fixed lever 10 biased. Between the two levers 9 . 10 is there a torque drive (rotational drive 15 ). The shifter 9 So it is with the shift lever 10 torque-resistant connected. Is the rotatably mounted shift lever 9 at the height of the shift rails (first gear shift elements 23 ) of the mechanical transmission 2 , these are controlled by the shift lever 9 or its ejector 11 actuated. When starting the shift rail 24 of the electric transmission 3 becomes the rotatably mounted shift lever 9 through a stop 16 in the transmission 18 axially blocked and remains in its position while the firmly connected shifter 10 moved axially. This will torque take 15 between the shifters 9 . 10 solved and the ejector 11 the rotatably mounted shift lever 9 can the shift rails 23 of the mechanical transmission 2 when switching the electric shift rail 24 do not press anymore. The independence of the two gears 2 . 3 is guaranteed.

In a second constructive training 2 is on the shift shaft 5 a gear actuator 1 a (first) shift lever 9 rotatably mounted. A second lever 10 is with the selector shaft 5 firmly connected. The rotatably mounted shift lever 9 is about a spring 14 axially against a torque arm (rotational drive 15 ). The shifter 5 is about the torque drive 15 torque-resistant with the switching shaft 5 connected. Is the rotatably mounted shift lever 9 at the height of the shift rails 23 of the mechanical transmission 2 These are controlled by the shift lever 9 or its ejector 11 actuated. When starting the shift rail 24 of the electric transmission 3 becomes the rotatably mounted shift lever 9 through a stop 16 in the transmission 18 axially blocked and remains in its position while the firmly connected shifter 10 and the shift shaft 5 moved axially. This will torque take 15 to the shift lever 9 solved and the ejector 11 the rotatably mounted shift lever 9 can the shift rails 23 of the mechanical transmission 2 when switching the electric shift rail 24 do not press anymore. The independence of the two gears 2 . 3 is thus also ensured.

LIST OF REFERENCE NUMBERS

1

gear actuator

2

first transmission device

3

second transmission device

4

powertrain

5

shift shaft

6

longitudinal axis

7

first operating section

8th

second operating section

9

first shift lever

10

second shift lever

11

Auswerfsegment

12

shift finger

13

Outer peripheral side

14

spring means

15

rotationally driving

16

attack

17

transmission actuator

18

transmission system

19

The gearshift mechanism

20

motor vehicle

21

Internal combustion engine

22

electric motor

23

first gear shift element

24

second gear shift element

25

survey

26

groove

27

recess

28

gearbox

29

Transmission output shaft

30

wheel

31

adjustment

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102016218388 A1 [0002]

Claims (10)

Transmission actuator (1) for two transmission devices (2, 3) of a motor vehicle drive train (4), with a selector shaft (5) which is displaceable for selecting and switching individual gears of the transmission devices (2, 3) along its longitudinal axis (6) and about the longitudinal axis (6) is rotatable, wherein the switching shaft (5) has a first actuating portion (7) for engaging and / or laying a gear of a first transmission device (2), characterized in that further comprises a second actuating portion (8) on the switching shaft ( 5) is arranged and the first actuating portion (7) of the switching shaft (5) is rotatably coupled, so that a gear and / or laying a gear of a second transmission means (3) by means of the second operating portion (8) of a switching state of a gear of the first Transmission device (2) is unaffected. Gear actuator (1) after Claim 1 characterized in that the first operating portion (7) is part of a first shift lever (9) and the first shift lever (9) comprises an ejection segment (11) for disengaging a gear of the first transmission device (2) and / or a shift finger (12) Engaging a gear of the first transmission device (2). Gear actuator (1) after Claim 1 or 2 , characterized in that the first actuating portion (7) on an outer peripheral side (13) of the switching shaft (5) is rotatably and / or axially displaceably mounted. Gear actuator (1) according to one of Claims 1 to 3 , characterized in that the second actuating portion (8) rotatably and / or non-displaceably connected to the switching shaft (5). Gear actuator (1) according to one of Claims 1 to 4 , characterized in that the first actuating portion (7) by means of a spring device (14) in a coupling position in which it is rotatably coupled to the switching shaft (5), is biased. Gear actuator (1) according to one of Claims 1 to 5 , characterized in that the first operating portion (7) in its coupling position directly via a rotational drive (15) on the switching shaft (5) or indirectly via a rotational drive (15) on the second actuating portion (8) rotatably coupled to the switching shaft (5) is. Gear actuator (1) according to one of Claims 1 to 6 , characterized in that the first operating portion (7) is supported in its Entkoppelstellung such on a housing-fixed stop (16), that the first actuating portion (7) is freely rotatable to the switching shaft (5). Transmission system (18) for a motor vehicle drive train (4), with a first transmission device (2), a second transmission device (3) and a for driving the gears with the transmission means (2, 3) operatively connected transmission actuator (1) according to one of Claims 1 to 6 , Drive train (4) for a motor vehicle (20), with a transmission system (18) according to Claim 7 or 8th an internal combustion engine (21) rotatably coupled or rotatably coupled to a transmission shaft of the first transmission device (2), and an electric motor (22) rotationally coupled to a transmission shaft of the second transmission device (3). Motor vehicle (20) with a drive train (4) according to Claim 9 ,

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