阅读说明：本技术 换挡辊装置和变速器装置 (Shift roller device and transmission device ) 是由 斯特凡·卡普 格奥尔格·布加特 于 2019-08-29 设计创作，主要内容包括：本发明涉及一种用于变速器装置(16)的换挡设备(30)的换挡辊装置(32),所述变速器装置尤其用于机动车,所述换挡辊装置具有：换挡辊本体(34),所述换挡辊本体可围绕换挡辊轴(40)转动；和止挡装置(60),用于参考换挡辊本体(34)的转动位置,其中止挡装置(60)具有止挡元件(62),所述止挡元件构成为,使得所述止挡元件在第一参考位置中能够与壳体止挡(65)接触,其中所述止挡元件(62)可相对于换当辊本体(34)沿转动方向受限转动地支承。(The invention relates to a shift roller arrangement (32) for a shifting device (30) of a transmission arrangement (16), in particular for a motor vehicle, having: a shift roller body (34) rotatable about a shift roller shaft (40); and a stop device (60) for referencing a rotational position of the shift roller body (34), wherein the stop device (60) has a stop element (62) which is designed such that it can be brought into contact with a housing stop (65) in a first reference position, wherein the stop element (62) is mounted in a rotationally fixed manner in the rotational direction relative to the shift roller body (34).)

1. A shift roller device (32) for a shifting apparatus (30) of a transmission device (16) of a motor vehicle, the shift roller device having: a shift roller body (34) rotatable about a shift roller shaft (40), and a stop device (60) for referencing a rotational position of the shift roller body (34),

wherein the stop device (60) has a stop element (62) which is designed such that it can be brought into contact with a housing stop (65) in a first reference position, wherein the stop element (62) is mounted in a rotationally limited manner relative to the shift roller body (34) in the rotational direction.

2. The shift roller device according to claim 1,

wherein the stop element (62) is freely rotatable relative to the shift roller body (34) over an angular range (α) of more than 3 ° and/or less than 37 ° or more than 6 ° and/or less than 35 °.

3. The shift roller device according to claim 2,

wherein the angular range (α) is greater than or equal to an angular range (β) within which the housing stop (65) extends (β).

4. The shift roller device according to claim 1,

wherein the shift roller body (34) is mounted on the shift roller shaft (40) in a freely rotatable manner, and/or wherein the stop element (62) is mounted on the shift roller shaft (40) or on the shift roller shaft (40) in a freely rotatable manner.

5. The shift roller device according to claim 1,

wherein the shift roller body (34) has an axial shift roller recess (64) in the region of the end face, into which the first projection (86) of the stop element (62) extends, wherein the shift roller recess (64) is longer in the direction of rotation than the first projection (86) such that the stop element (62) is mounted in a rotationally limited manner relative to the shift roller body (34).

6. The shift roller device according to claim 5,

wherein the stop element (62) has a first stop element stop surface (66) and a second stop element stop surface (68) which are spaced apart from one another in the direction of rotation by an angle (γ) in the range of 1 ° to 30 °.

7. The shift roller device according to claim 1,

wherein the stop element (62) has a second projection (88) which projects in the axial direction and which has a third stop element stop surface (74) and a fourth stop element stop surface (76) which are spaced apart from one another in the direction of rotation by an angle (γ) in the range of 1 ° to 30 °.

8. The shift roller device according to claim 5,

wherein the first projection (86) and the second projection (88) are equally long in the direction of rotation, and/or wherein the first projection (86) and the second projection (88) are offset in the direction of rotation by an offset range (γ) which is greater than or equal to the length of the first or second projection (86, 88) in the direction of rotation.

9. The shift roller device according to claim 1,

wherein the stop element (62) is axially supported on the shift roller body (34).

10. A transmission device (16) for a motor vehicle,

the transmission device has a housing (38), a shifting device (30) for shifting gears, wherein the shifting device (30) has a shift roller arrangement (32) according to claim 1.

11. A transmission arrangement as claimed in claim 10,

wherein the housing (38) has a housing stop (65) which forms a reference element having two housing stop surfaces (78, 80) which are arranged offset in the direction of rotation, the stop element (62) stopping on the housing stop surfaces in a first reference position or in a second reference position.

Technical Field

The invention relates to a shift roller device for a shifting device, in particular for a transmission device of a motor vehicle, having a shift roller body which can be rotated about a shift roller axis and has a stop device for referencing a rotational position of the shift roller body.

The invention further relates to a transmission device for a motor vehicle, having a housing, a shifting device for shifting gears, wherein the shifting device has a shifting roller arrangement of the type described.

Background

Shifting devices for transmission devices are generally known in the prior art.

Document DE 19655083B 4 discloses a shifting device of a transmission, which has a shifting roller integrated into the transmission housing. The clutch actuator is formed separately from this.

Furthermore, a shifting device for a transmission and a clutch is known from WO 97/02963 a, in which the transmission actuation and the clutch actuation are carried out by means of actuators which are embodied separately from one another.

Document WO 02/066870 a1 discloses a transmission operating device in which one gear stage is automatically shifted when the other gear stage is shifted.

Document WO 2015/149797 a1 discloses an operating device for operating a transmission, which operating device has a rotatable roller element, wherein a reference element connected in a rotationally fixed manner to the roller element interacts with a signaling device in such a way that a position signal is generated when the signaling device and the reference element are moved relative to one another in a specific rotational position of the roller element. The position signal may be generated by changing the mechanical resistance of the driving force of the driving motor in a specific rotational position.

DE 10113161 a1 discloses an adjusting device for an automated manual transmission. The shift roller is rotatable relative to a shaft fixed to the housing. A finger is fixed on a shaft fixed to the housing, and the finger is engaged in a recess on the end side of the shift roller.

It is known from EP 1286088 a1 to fasten a magnetic ring to the selector roller, said magnetic ring being designed to detect the rotational position of the respective selector roller by means of a suitable sensor.

DE 102016124403 a1 shows a shift roller for an automated vehicle transmission, which shift roller has a shift roller body which is rotatable about a rotational axis and at which at least one first shift contour is formed, which extends over a circumferential section of the shift roller body and can be acted on by a first driver which is associated with a first shift clutch group of the motor vehicle transmission, wherein the first shift contour has a first gear section which is associated with a first shift clutch position of the first shift clutch group and has a second gear section which is spaced apart from the first gear section by a first circumferential spacing.

DE 69216375T 5 shows a device for operating a transmission, which has: a shift fork movable to selectively change a gear ratio of a transmission; a drum, the outer face of which has curved tracks that respectively cooperate with cam tappets supported by respective fork-shaped elements or levers; a hydraulic rotary drive that rotates the drum; and an electronic unit for driving the electro-hydraulic circuit. A multiplier unit with a wrap around variator is provided between the hydraulic rotary drive and the drum.

DE 102013221058 a1 shows an operating device for operating a transmission for selecting a gear stage and a gear or a gear disengagement of the selected gear stage and/or for operating at least one clutch, the operating device having at least one rotatable roller element with a guide rail into which in each case one contact element of a gear shift fork engages for displacing the gear shift fork for selecting and shifting the gear stage of the transmission; and an operating region for the clutch operating mechanism for operating the at least one clutch.

In some shifting devices, a sensor device is present, which detects whether a gear is engaged in the transmission device. Since the gear of the gear is usually assigned to a specific rotational position of the shift roller, the rotational position can be inferred. However, the gear position sensing device is not used for detecting the rotational position of the shift roller, as long as, for example, in a dual clutch transmission, no gear is engaged in the sub-transmission.

As mentioned above, for reference, a rotating end stop can be integrated into the shift roller. The rotatability of the shifting rollers is limited, however. The width and the solid stop partially noticeably reduce the available rotation angle of the shift roller. As long as the shifting roller arrangement requires more than 360 ° of rotation, reference is not feasible in the manner and method described.

By hybridization of the transmission, new requirements for the gear shifting device arise. For example, there is a requirement for an electric machine engaged or integrated in the transmission to charge and/or release the parking brake in the stationary state.

Disclosure of Invention

Against this background, the object of the present invention is to provide a shift roller arrangement and a transmission arrangement in which the problems of the prior art are at least partially reduced and in which the shift roller arrangement can preferably provide an increased range of rotation angles in relation to the prior art in an otherwise given arrangement and/or given critical conditions.

The object is achieved by a shift roller device for a shifting device, in particular for a transmission device of a motor vehicle, having a shift roller body which is rotatable about a shift roller axis and has a stop device for referencing a rotational position of the shift roller body, wherein the stop device has a stop element which is designed such that it can be brought into contact with a reference element in a first reference position, wherein the stop element is mounted in a rotationally fixed manner relative to the shift roller body in the rotational direction.

The object is also achieved by a transmission device for a motor vehicle having a housing with a shifting device for shifting gears, wherein the shifting device has a shifting roller arrangement of the type according to the invention.

The shift roller device according to the invention can be realized by the relative rotatability of the stop element relative to the shift roller body, and the maximum rotation angle of the shift roller body can be increased.

In the known shift roller device, which has a stop fixedly connected to the shift roller body, the maximum rotatability of the shift roller body is obtained by subtracting the circumferential angle of the stop element from 360 ° and subtracting the circumferential angle of a reference element, which can be, for example, an element fixed to the housing, such as a housing stop. In this case, the maximum rotational angle in the prior art can only be 290 ° if, for example, the stop element extends over 35 ° and the housing stop likewise extends over 35 °.

In contrast thereto, in the shift roller device according to the invention, the maximum rotatability of the shift roller body can be increased at the following angles: the stop element is supported in a rotationally limited manner at the angle relative to the shift roller body in the rotational direction.

It is thereby possible to integrate the required additional functions into the shift roller device by increasing the relative rotatability, in particular by providing further special rotational positions of the shift roller body, in order to design a specific function. This can mean in other words that an increase in the circumferential length of the shift roller body can be avoided. Thus, additional functionality may be provided as necessary: packaging-neutral, wherein preferably changes of the peripheral devices (shift roller drive, shift forks, housing, etc.) can be avoided.

In one embodiment, the shift roller body has two stop faces which are offset from one another in the circumferential direction or direction of rotation, to be precise over an angular range which is greater than the angular extent or length of the stop element in the circumferential direction.

Providing a stop means enables the reference shift roller body rotational position to be achieved, for example even in the following cases: the shift roller body is in a rotational position, which corresponds to a neutral position of the transmission device, when it is not possible to indirectly measure the rotational angle of the rotational position of the shift roller body, for example via a gear sensor device.

Maximum rotation angle α_MAXCan be calculated as follows:

α_MAX＝(360°-α_G-α_A)+(α_S-α_A)

α therein_GIs the circumferential angle of the stop of the housing, wherein α_AIs a stop elementAnd wherein α_SIs the circumferential angle between the two stop surfaces of the shift roller body.

Suppose, angle α_AAnd α_GAre respectively 35 deg. and have an angle α_S325 deg., the maximum rotation angle is α_Max＝360°-35°-35°+325°-35°＝580°。

Depending on the material choice, the stop width can also be reduced to 20 °, so that a maximum rotation angle of 360 ° -20 ° +340 ° -20 ° -640 ° is obtained.

The functional grooves of the shifting roller body can thus extend, for example, at up to 640 ° around the shifting roller body, i.e. according to a spiral manner.

The object is thus fully achieved.

Given an angular extension of the stop element of at least 3 °, it is preferred that the stop element is freely rotatable relative to the shift roller body over an angular range of more than 3 ° and/or less than 357 °, in particular more than 6 ° and less than 35 °.

Although theoretically large angles of rotation between the stop element and the shift roller body are possible, it is preferred in many cases that the angular range is small, in particular less than 35 °. Thereby, it is generally possible to provide at least one additional function (with respect to a shift roller body and a rigid stop element of the same size).

It is also advantageous if the angular range over which the stop element is freely rotatable relative to the shift roller body is greater than or equal to the angular range over which the reference element extends.

This enables the maximum free rotatability to be optimized.

It is advantageous overall if the shift roller body is mounted so as to be freely rotatable about the shift roller shaft and/or if the stop element is mounted so as to be freely rotatable about the shift roller shaft or about the shift roller shaft.

In general, it is conceivable here for the shift roller shaft to be designed as a bearing pin which is mounted in a fixed manner to the housing, wherein the shift roller body and/or the stop element are rotatably mounted relative to the bearing pin which is fixed to the housing, for example via suitable bearing arrangements.

Alternatively, it is conceivable that the shifting roller body is fixedly connected to a bearing shaft which is rotatably mounted on the housing via a bearing arrangement, wherein the stop element is, for example, likewise rotatably mounted relative to the housing, but can also be rotatably mounted on such a bearing shaft.

Finally, it is also conceivable for the stop element to be supported only on the shift roller body, i.e., to be able to rotate in a limited manner in the direction of rotation. All these alternatives are intended to be encompassed by the expression "freely rotatably supported around the shift roller shaft".

According to a further overall preferred embodiment, the shift roller body has an axial shift roller recess in the region of the end face, into which axial shift roller recess the first projection of the stop element extends, wherein the shift roller recess is longer in the rotational direction or in the circumferential direction than the first projection (or extends in the circumferential direction over a larger angular range than the first projection) such that the stop element is mounted in a rotationally limited manner relative to the shift roller body.

The shifting roller recesses preferably extend over a circumferential length which corresponds to the circumferential length of the first elevations plus an additional angle of rotation of, for example, 3 ° to 357 °.

By means of the shift roller recess, a relatively limited rotatability of the stop element relative to the shift roller body can be achieved in a constructionally simple manner.

According to a further preferred embodiment, the stop element has a first stop element stop surface and a second stop element stop surface which are spaced apart from one another in the circumferential direction by an angle in the range from 1 ° to 30 °.

Particularly preferably, the first stop element stop surface and the second stop element stop surface form surfaces of the first projection of the stop element which are spaced apart from one another in the circumferential direction.

According to a further preferred embodiment, the stop element has a second projection which projects in the axial direction and which has a third stop element stop face and a fourth stop element stop face which are spaced apart from one another in the direction of rotation by a further angle in the range from 1 ° to 30 °.

Preferably, the third stop element stop surface and the fourth stop element stop surface are spaced apart from one another in the direction of rotation by an angle which is equal to the angle by which the first stop element stop surface and the second stop element stop surface are spaced apart from one another in the circumferential direction.

The second projection preferably extends in the axial direction away from the base body of the stop element, more precisely away from the shift roller body and towards a possible arrangement of the reference element, in particular towards a housing wall on which the reference element is formed as a housing stop.

It is furthermore preferred that the first projection and the second projection are equally long in the direction of rotation or extend over the same angular range. Alternatively or additionally to this, the first projection and the second projection are offset in the direction of rotation by an offset range, which is greater than or equal to the length of the first or second projection in the direction of rotation.

By offsetting the first projection and the second projection in the direction of rotation, it is possible for the stop element to be realized with a substantially uniform thickness, so that advantages in terms of production and/or advantages with regard to overall strength can be achieved.

According to a further preferred embodiment, the stop element is axially supported on the shift roller body.

The axial bearing here preferably comprises an anti-loss function in the axial direction, more precisely preferably in two axially opposite directions. The axial bearing does not have to perform the function of transmitting forces, but only serves for increased functional safety with regard to transport and installation.

For axial support, the shift roller body can have a radial groove into which a radially extending radial fixing projection of the stop element engages.

In the transmission device according to the invention, it is advantageous if the housing has a housing stop which forms a reference element having two housing stop surfaces which are arranged offset in the direction of rotation and against which the stop element stops in the first reference position or in the second reference position.

The housing stop can be configured, for example, as a projection in the radial direction with respect to the shift roller shaft receiving portion. The first housing stop surface is preferably associated with the third stop element stop surface, and the second housing stop surface is preferably associated with the fourth stop element stop surface.

The stop element can be, for example, a robust sintered metal element. The formation of relatively large projections can thereby be achieved, in particular by sintering.

The circumferentially staggered arrangement of the protrusions simplifies the sintering process.

Although in some cases an increase in the rotatability can be achieved, the invention also enables an increase in the housing stop in the circumferential direction, which can lead to a higher robustness of the stop function.

It is to be understood that the features mentioned above and also explained below can be used not only in the respectively given combination but also in other combinations or alone without departing from the scope of the present invention.

Drawings

Embodiments of the invention are illustrated in the drawings and set forth in detail in the following description. The figures show:

fig. 1 shows a schematic representation of a drive train of a motor vehicle, which has a transmission device and an exemplary embodiment of a shift roller device according to the invention;

FIG. 2 shows a schematic cross-sectional view along the line II-II in FIG. 1;

fig. 3 shows a schematic perspective exploded view of another embodiment of a shift roller arrangement according to the invention;

fig. 4 shows a perspective view of another embodiment of a shift roller arrangement according to the invention; and

fig. 5 shows a stop element of the shift roller arrangement of fig. 4.

Detailed Description

A powertrain for a motor vehicle is schematically illustrated in fig. 1 and generally indicated at 10. The drive train 10 has a drive engine 12, which can be formed by an internal combustion engine or by a hybrid drive unit.

Furthermore, the drive train 10 generally comprises a clutch device, which can be realized as a single clutch or as a dual clutch. The clutch device 14 is connected to the drive engine 12 on the input end side. On the output side, the clutch device 14 is connected to a transmission device 16 for setting up a plurality of gears, wherein the transmission device 16 in fig. 1 is schematically illustrated as a stepped transmission in the form of an intermediate shaft. The output of the transmission device 16 is connected to a differential 18, by means of which the drive power can be distributed to the drive wheels 20L, 20R.

The transmission device 16 has a plurality of shifting clutches for establishing the different gears, one of which is shown schematically in fig. 1 in the form of a shifting clutch group at 24. The shift clutch device 24 is alternatively used to place a first or a second wheel set (not shown in detail in fig. 1) in the power flow. The shifting clutch device 24 is shifted by means of a shifting sleeve 26, so that one or the other wheel set can be put into the power flow or a neutral position of the shifting roller device can be established.

For the axial displacement and thus the shifting of the shifting sleeve 26 and possibly further shifting sleeves of further shift clutch devices of the transmission device 16, the transmission device 16 comprises a shifting device 30. The shifting device 30 is realized as a shift actuator, so that the gears of the transmission device 16 can be automatically changed. The gear shift arrangement 30 comprises a gear shift roller arrangement 32. The shift roller arrangement 32 has a shift roller body 34 which is rotatably mounted in a direction of rotation 37 about an axis of rotation 36, more precisely relative to a housing 38. The housing 38 can be, for example, a housing of the transmission device 16.

One or more shift roller shaft receptacles 39 can be formed in the housing 38, in which shift roller shafts 40 are received. The shift roller shaft 40 can be configured, for example, as a shift roller shaft which is rotatably mounted in the shift roller shaft receptacle 39 via a bearing arrangement, not shown in detail. The shift roller shaft 40 can, however, also be formed by a bearing pin fixed to the housing, which is fixed in the shift roller shaft receptacle 39 in a manner fixed to the housing.

In a preferred embodiment, the shift roller body 34 is rotatably supported relative to the shift roller shaft 40 via a shift roller bearing arrangement 42. In general, it is also conceivable, however, for the shift roller body 34 to be fixedly connected to a shift roller shaft, which is in turn rotatably mounted relative to the housing 38.

The shift roller body 34 is connected to the drive element 44, specifically on its axial end face. The drive element 44 can be formed, for example, by a gear wheel having an external toothing 46. The external toothing 46 of the drive element 44 can be engaged, for example, with a drive pinion 48 of a shift roller motor 50. The shift roller motor 50 can be, for example, an electric motor. By operating the shift roller motor 50, the shift roller body 34 can thus be rotated relative to the housing 38.

At least one shift roller groove 52 is formed on the outer circumferential periphery of the shift roller body 34, however, a plurality of grooves 52 may be formed thereon. At least one driver 54 engages into the shift roller groove 52, which driver also acts on the shift sleeve 26. The rotation of the shift roller body 34 with a suitable design of the shift roller groove 52 therefore causes an axial displacement of the driver 54 and thus of the shift sleeve 26, which is accompanied by a shift or an upshift of the gear.

In order to be able to refer to the rotational position of the shift roller body 34, the shift roller device 32 comprises a stop device 60. The stop device 60 has a stop element 62, which is designed such that it can be brought into contact with a reference element, in particular with a housing stop 65, in a first reference position, wherein the stop element 62 is mounted in a rotationally fixed manner relative to the shift roller body 34 in the rotational direction.

The stop element 62 engages with a first projection, not shown in detail in fig. 1, in a shift roller recess 64 of the shift roller body 34, wherein the shift roller recess 64 is formed in the region of an axial end face of the shift roller body, more precisely preferably on the end face axially opposite the drive element 44.

The stop member 62 is generally freely movably supported relative to the shift roller body 34. This can be done as follows: the stop element 62 is connected in a rotationally fixed manner to the shift roller shaft 40 as long as the shift roller shaft 40 is rotatably supported on the housing 38. On the other hand, the stop element 62 can also be rotatably mounted on the shift roller shaft 40 if, for example, the shift roller shaft is designed as a bearing pin fixed to the housing. It is also generally conceivable for the stop element 62 to be mounted rotatably only relative to the shift roller body 34 and not on the shift roller shaft 40.

As is shown in fig. 2, which is a schematic section in an expanded view, the housing stop 65 is designed as a section that projects axially relative to a radial housing wall of the housing 38. The housing stop 65 is schematically illustrated in fig. 1 as an axial or radial projection in an annular axial groove of the housing 38.

The shift roller recess 64 into which the first projection of the stop element 62 engages is formed longer in the rotational direction than the first projection, so that the stop element is mounted in a rotationally limited manner relative to the shift roller body.

More precisely, the stop element 62 has a first stop element stop surface 66 in the region of the first projection and a second stop element stop surface 68 on the circumferentially opposite side of the first projection, the shift roller recess 64 has a first shift roller stop surface 70 and a second shift roller stop surface 72 offset in the circumferential direction, the shift roller stop surfaces 70, 72 are spaced apart from the first and second stop element stop surfaces 66, 68 over a larger angular range, so that the stop element 62 is mounted freely movably relative to the shift roller body 34 in the rotational or circumferential direction at an angle, which is denoted by α in fig. 2, the angle at which the first stop element stop surface 66 and the second stop element stop surface 68 are spaced apart from one another is denoted by β in fig. 2.

At the axially opposite end, the stop element 62 has a second projection, on which a third stop element stop surface 74 and a fourth stop element stop surface 76 are formed, the third and fourth stop element stop surfaces 74, 76 can be spaced apart from one another by the same angle β as the first and second stop element stop surfaces 66, 68.

Housing stop 65 has a first housing stop face 78 and a second housing stop face 80 that are circumferentially spaced from one another, preferably at an angle that can correspond to angle β, preferably angle α is greater than or equal to angle β.

In contrast to the embodiment in which the stop element 62 is rigidly connected to the shift roller body 34, the maximum rotational angle of the shift roller body 34 is increased by the value α, i.e., by the value at which the stop element 62 is rotatably mounted relative to the shift roller body 34.

In the first reference position shown in fig. 2, the first stop element stop surface 66 rests against the first shift roller stop surface 70 and the third stop element stop surface 74 rests against the first housing stop surface 78. Thereby, a form fit is established in the circumferential direction between the housing 38 and the shift roller body 34, so that said position can be used as a reference position for referencing the rotational position of the shift roller body.

From this position, the shift roller can be rotated in only one direction, namely until the fourth stop element stop surface 76 comes into contact with the second housing stop surface 80. This therefore also causes the first projection of the stop element 62 to tilt within the shift roller recess 64, so that the second stop element stop surface 68 comes into contact with the second shift roller stop surface 72. The maximum rotation angle of the shift roller body 34 is thus 360 ° minus the circumferential length or angle of the housing stop 65. If the circumferential angle is 35 °, for example, the shift roller body 34 can be rotated 360 ° -35 ° -325 °. In the prior art, the maximum rotatability is obtained assuming that the housing stops 65 have the same circumferential width of 35 ° and the stop elements 62 have the same circumferential length of 35 °, the maximum possible angle of rotation being 290 ° (360 ° -2x35 ° -290 °).

Further embodiments of the shift roller device are described below, which generally correspond to the shift roller device 32 of fig. 1 and 2 with respect to the construction and functional principle. Like elements are therefore denoted by like reference numerals. The differences are mainly explained below.

Fig. 3 shows a shifting roller arrangement 32 'with a shifting roller body 34' which contains two shifting roller grooves 52 arranged side by side. The shift roller shaft 40' is designed as a pin, which can be rotatably mounted relative to the housing. The drive element 44 is fastened to the end face of the shift roller body 34' by means of screws not shown in detail. The shift roller body 34 'is rotatably supported relative to the shift roller shaft 40' via two axially spaced bearing bushes 42a, 42 b. The stop element 62 ' has an annular section, by means of which the stop element 62 ' can be pressed onto the shift roller shaft 40 '. Furthermore, the stop element 62 'has a first projection 86, which engages in a shift roller recess 64, which is not shown in detail in fig. 3, and a second projection 88, which extends in the axial direction opposite the first projection 86 relative to the annular section of the stop element 62'. The second projection 88 is designed for a stop on the housing stop 65, similar to the second projection of the stop element 62, which is not shown in detail in fig. 2.

Fig. 4 and 5 show a further embodiment of a shifting roller device 32 ″ having a shifting roller body 34 ″ which contains a single shifting roller groove 52. On one axial side, a drive element 44 is fixed. On the other axial end side, a stop element 62 ″ is provided, the first projection 86 of which engages in the shift roller recess 64 ″ on the other end side. The stop element 62 "can be mounted rotatably relative to the shift roller shaft 40" by means of a bearing sleeve, not shown in detail, so that the shift roller shaft 40 "can also be realized as a shaft fixed to the housing.

The stop element 62 ″ is shown in fig. 5 with greater precision, the stop element 62 ″ comprises an annular section 82, which can be pushed onto the shift roller shaft 40, furthermore, the stop element 62 ″ has a projection section 84 extending radially from the annular section 82, on the radial ends of which a first projection 86 and a second projection 88 are formed, the first projection 86 being formed for engaging into the shift roller recess 64 ″, the second projection 88 being formed in the housing stop 65, it being possible to see that the projections 86, 88 are offset from one another in the circumferential direction by an angle γ, the angle γ serving to avoid material accumulation in the region of the projections, so that the stop element 62 ″ can be sintered well, the extension of the first projection 86 and the second projection 88 in the circumferential direction can here be substantially identical to the angle γ, furthermore, the angle α described with reference to fig. 2 preferably being greater than or equal to the angle γ.

The stop element 62 ″ has, on the side of the ring section 82 diametrically opposite the projection section 84, an axial fixing projection 90 which engages in a radial groove, not shown in detail, of the shift roller body 34 'when the stop element 62 ″ is mounted on the shift roller body 34'. The interaction of the axial securing projection 90 and the radial groove forms an axial support for the stop element 62 ″, which is, however, purely for better transportability and better installability and, in particular, does not have to transmit forces.

List of reference numerals:

10 drive train

12-drive engine

14 clutch device

16 speed variator device

18 differential

20 driving wheel

24-shift clutch device

26 shift sleeve

30 gearshift device

32 shift roller device

34 shift roller body

36 axis of rotation

37 direction of rotation

38 casing

39 shift roller shaft housing part

40 shift roll shaft

42 shift roller supporting device

44 drive element

46 tooth part

48 drive pinion

50 shift roller motor

52 Shift roll Slot(s)

54 driving part

60 stop device

62 stop element

64 Shift roller recess

65 housing stop

66 first stop element stop surface

68 second stop element stop surface

70 first shift roller stop surface

72 second selector roller stop surface

74 third stop element stop surface

76 fourth stop element stop surface

78 first housing stop surface

80 second housing stop surface

82 ring segment

84 raised section

86 first projection

88 second projection

90 axial fixing projection