WO2020147884A1

WO2020147884A1 - Apparatus for synchronizing and/or switching in a transmission housing and transmission

Info

Publication number: WO2020147884A1
Application number: PCT/DE2019/101108
Authority: WO
Inventors: Dominik Hans; Sebastian HELMER; Pierre-Yves Berthelemy; Georg Kraus
Original assignee: Schaeffler Technologies AG & Co. KG
Priority date: 2019-01-16
Filing date: 2019-12-19
Publication date: 2020-07-23
Also published as: DE102019100978B3

Abstract

The invention relates to an apparatus (10) for synchronizing and/or switching in a transmission housing (2), having a swivel actuation device (12), which is actuated in a swiveling manner and which interacts via an actuation geometry with an axially movable sliding collar (13) such that the swiveling actuation movement is converted into an axial synchronizing and/or switching movement of the sliding collar (13). In order to simplify the synchronizing and/or switching in a transmission housing (2), a guide sleeve (14) associated with the swivel actuation device (12) is connected to the transmission housing (2).

Description

Device for synchronizing and / or shifting in a transmission housing and transmission

The invention relates to a device for synchronizing and / or switching in egg NEM gear housing, with a pivot actuating device which is pivotally actuated and which cooperates via an actuating geometry with an axially movable sliding sleeve that the pivoting actuating movement in an axial synchronizing and / or Switching movement of the sliding sleeve is converted. The invention further relates to a transmission with idler gears.

From the German patent application DE 10 201 1 007 266 A1 is a switching device with at least one coupling device, a shaft, with an axially displaceable and rotatably arranged to the shaft switching sleeve of the coupling device and with an actuator arrangement of the coupling device for axial displacement of the switching sleeve is known, the coupling element rotatable relative to the shaft about a rotational axis at least one coupling toothing and the shift sleeve at least one associated with the coupling toothing Ge Ge toothing is rotatably associated, and wherein at least one annular actuator element of the actuator arrangement surrounds the switching sleeve circumferentially around the rotation axis, whereby the annular actuator element is at least one shift drum with at least one guideway, wherein a guide element connected to the shift sleeve engages radially in the guideway and the shift drum rotates about the axis of rotation is at least pivotable and thereby movable with the guide rail relative to the guide element. From the German Offenle publication DE 10 2016 216 932 B4 a switching device for synchronization in a transmission with at least a first gear and a second gear and a gear shaft is known, about which the gears are rotatably arranged, where in a synchronization system between the first gear and the min least a second gear is arranged and surrounds the transmission shaft, the synchronization system a sliding sleeve carrier and one in the axial direction comprises movable sliding sleeve and is at least partially arranged within a pot-shaped recess of one of the gearwheels, axial forces being supported between or within the first gearwheel or the second gearwheel or on rotating components of the switching device, the synchronization system also comprising a screw ring which Has formed at least one threaded piece, which surrounds the sliding sleeve and is firmly attached to it, has a threaded sleeve which has formed at least one threaded slot in a sleeve wall, through which in each case the at least one threaded piece of the

Screw ring engages; and has an actuating sleeve which surrounds the threaded sleeve and is in operative connection with the at least one threaded piece. From the international patent specification WO 2018/046047 A1, a switching device for synchronization in a transmission with at least a first gear and a second gear and a gear shaft is known, around which the gears are rotatably arranged, with a synchronization system between the first gear wheel and the at least one second gearwheel is arranged and surrounds the transmission shaft, the synchronization system comprising a sliding sleeve carrier and a sliding sleeve movable in the axial direction and being arranged at least partially in a cup-shaped recess of one of the gearwheels in such a way that axial forces are supported between or within of the first gear or the second gear or on rotating components of the switching device.

The object of the invention is to begin the synchronization and / or switching in a gearbox with a pivoting actuating device which is pivotally actuated and which interacts via an actuating geometry with an axially movable sliding sleeve such that the pivoting actuating movement is synchronized in an axial synchronizing and / or switching movement of the sliding sleeve is converted to simplify.

The object is in a device for synchronizing and / or shifting in a transmission housing, with a pivoting actuating device which is pivotally actuated and which interacts via an actuating geometry with an axially movable sliding sleeve such that the pivoting actuating movement into an axial synchronizing and / or shifting movement of the sliding sleeve is converted, solved in that one of the pivot actuating guide guide sleeve is connected to the gear housing. The swivel actuating device comprises, for example, an actuating wheel which is rotatably or pivotably arranged in the transmission relative to an axis of rotation of a shaft. The actuation geometry includes, for example, a thread mechanism via which the pivoting actuation movement is converted into an axial synchronizing and / or switching movement of the sliding sleeve. The sliding sleeve is advantageously combined with a synchronization. Differential speeds are first compensated for via the synchronization before a non-rotatable connection to the torque transmission is established using the sliding sleeve. In tests and examinations carried out within the scope of the present invention, difficulties have arisen in the control of conventional pivoting actuation devices. In the tests and examinations of the conventional swivel actuating device, an inhibiting frictional force could be found as the cause of a direction-dependent behavior. Through the claimed device with the guide sleeve, synchronization and / or switching operations can be represented in a controllable and reproducible manner with less control effort. In addition, the assembly is simplified by the claimed device. Part of the actuation geometry is provided, for example, on a threaded sleeve.

A preferred embodiment of the device is characterized in that the guide sleeve has axial guide grooves. The guide sleeve partially performs at least one double function. On the one hand, the guide sleeve serves to support the swivel actuating device on the gear housing. In addition, the guide grooves enable direct or indirect coupling in the axial direction with the sliding sleeve.

Another preferred embodiment of the device is characterized in that a threaded sleeve is rotatably mounted on the guide sleeve.

This allows the function of the threaded sleeve to be stabilized with the actuation geometry.

Another preferred exemplary embodiment of the device is characterized in that the swivel actuating device comprises an actuating wheel which is arranged on the threaded sleeve. The actuating wheel is advantageously connected in one piece to the threaded sleeve. Radially outside, the actuating wheel is equipped with external teeth, for example, via which a pivoting actuating movement can be initiated.

Another preferred embodiment of the device is characterized in that the threaded sleeve is supported in the axial direction on the guide sleeve. The threaded sleeve is advantageously supported in both axial directions on the guide sleeve or on the guide sleeve on the gear housing. Axial support is provided, for example, via a bayonet lock.

Another preferred embodiment of the device is characterized in that the threaded sleeve cooperates with a screw ring which has radially outside pins which engage in an axial guide groove of the guide sleeve and in a threaded groove of the threaded sleeve. This creates a stable and controllable pivot actuation mechanism.

Another preferred embodiment of the device is characterized in that the screw ring has an annular region which is arranged in an annular groove of the sliding sleeve. So the screw ring is easily coupled in the axial direction with the sliding sleeve.

Another preferred embodiment of the device is characterized in that the screw ring has a slit. The slitting considerably simplifies the assembly of the device with the screw ring.

Another preferred exemplary embodiment of the device is characterized in that the slitting of the screw ring comprises a closing and / or spacing mechanism. The locking mechanism includes, for example, a rivet-shaped or bone-shaped locking element. The locking mechanism can also comprise a clamp-shaped locking element. The screw ring can also be connected in the slot area after assembly, for example by gluing or welding. The spacer mechanism includes, for example, a spacer that can be inexpensively made from sheet metal. In the case of a transmission with idler gears, the above-mentioned object is alternatively or additionally achieved in that a previously described device is partially arranged radially within one of the idler gears. This can save installation space.

The invention optionally also relates to an individual part for a previously described device or a previously described transmission. The individual parts can be traded separately.

The invention optionally also relates to a method for synchronizing and / or shifting in a transmission housing, with a device described above.

Further advantages, features and details of the invention will become apparent from the following description, in which various exemplary embodiments are described in detail with reference to the drawing. Show it:

1 shows a transmission with a device for synchronizing and / or switching with a swivel confirmation device according to a first embodiment in longitudinal section;

FIG. 2 shows the pivot actuation device from FIG. 1 in a perspective sectional view;

FIG. 3 shows the pivot actuating device from FIG. 2 in an exploded view;

Figure 4 is a perspective view of a sliding sleeve of the swiveling actuating device from Figures 2 and 3 with a screw ring;

FIG. 5 shows the screw ring from FIG. 4 alone in perspective; the

FIGS. 6 to 9 different variants of the screw ring from FIG. 4 each in a perspective view; Figure 10 is a similar representation as in Figure 1 according to a second embodiment example;

Figure 1 1 shows a pivot actuation device of the device of Figure 10 in a perspective sectional view;

Figure 12 is an enlarged view of a detail XII of Figure 1 1;

FIG. 13 shows an exploded view of parts of the swivel actuating device from FIG. 11;

Figure 14 is a similar perspective sectional view as in Figure 1 1; and

FIG. 15 shows an exploded view of two parts of the pivot actuating device from FIG. 11.

1 to 5 and 10 to 15 show two exemplary embodiments of a transmission 1; 51 with a gear housing 2; 52 shown in different views. In the gear housing 2; 52 is a shaft 3; 53 about an axis of rotation 1 1; 61 rotatably mounted. With the help of two bearings 4, 5; 54, 55 are on the shaft 3; 53 two idler gears 6, 7; 56, 57 rotatably mounted.

The gear 1; 51 is with a device 10; 60 for synchronizing and / or switching the idler gears 6, 7; 56, 57 on shaft 3; 53 equipped. The device 10; 60 comprises a pivot actuating device 12; 62. The swivel actuation device 12; 62 comprises a sliding sleeve 13; 63, which can be moved axially to the left and to the right in FIGS. 1 and 10 when an actuating wheel 22; 72 is pivoted or rotated. The term axial refers to the axis of rotation 1 1; 61. Axial in the direction or parallel to the axis of rotation 1 1; 61.

The pivot actuator 12; 62 comprises a hub-like sliding sleeve carrier which rotatably with the shaft 3; 53 is connected. In addition, the pivot actuator 12; 72 with synchronizations 8, 9; 58, 59 combination kidney through which the idler gears 6, 7; 56, 57 with the shaft 3; 53 who synchronized who before using the sliding sleeve 13; 63 a rotationally fixed connection between the idler gears 6, 7; 56, 57 and shaft 3; 53 is produced.

The pivot actuator 12; 62 comprises a guide sleeve 14; 64. The guide sleeve 14; 64 is on the gear housing 2; 52 attached. The attachment, for example, with the help of suitable fasteners such as screws.

In Figure 1, the guide sleeve 14 is not directly, but indirectly attached to the gear housing 2 via the screw screw 17. The screw-on slugs 17 are fastened to the guide sleeve 14 for example with the aid of bolts 15, 16. The screw-on slugs are in turn equipped, for example, with blind holes 18, which serve to fasten the screw-on slugs 17 on the transmission housing 2.

In the device 60 shown in FIGS. 1 1 to 15, the guide sleeve 64 is fastened to the gear housing 52 via fastening tabs 66, 67 with the aid of suitable fastening means, such as screws. On the guide sleeve 64, for example, three fastening tabs 66, 67 with suitable through holes are arranged radially on the outside.

The guide sleeve 14; 64 is with axial guide grooves 19; 69 equipped. A threaded sleeve 20; 70 is rotatable on the guide sleeve 14; 64 stored. The threaded sleeve 20; 70 is with thread grooves 21; 71; 75 equipped to represent an actuation geometry 28; 68 serve, with the help of a pivoting or rotating de actuation of the actuating wheel 22; 72 in an axial movement of the sliding sleeve fe 13; 63 is converted.

The guide sleeve 14; 64 is used to represent axial stops 23, 26; 73 for the threaded sleeve 20; 70. In FIG. 1, the threaded sleeve 20 is axially supported in both axial directions by the stops 23 and 26 directly on the guide sleeve 14 or on the screw-on connector 17.

The threaded sleeve 20; 70 is with a screw ring 24; 74 combined, the radially outer pin 25, 27; 76, 77. The pins 25, 27; 76, 77 both reach into the axial guide groove 19; 79 of the guide sleeve 14; 64 as well as in the thread groove 21;

71, 75 of the threaded sleeve 20; 70.

The screw ring 24 is arranged with an annular region 33 in an annular groove 34 of the sliding sleeve 13. The annular groove 34 is delimited by two ribs 31, 32 on the sliding sleeve 13.

To simplify assembly, the screw ring 24 is hen with a slot 30 verses. The slot 30 is combined with a closing and / or spacing mechanism 40. The closing and / or spacing mechanism 40 comprises a receiving contour 35 for a closing element 36 and a spacing element 37.

The guide sleeve 14; 64 serves together with the threaded sleeve 20; 70 for the presen- tation of a ramp mechanism for converting the pivoting actuation movement into the axial movement of the sliding sleeve 13; 63. The screw ring 24 received in the annular groove 34 of the sliding sleeve 13 can shift these surfaces over its axial end face in the axial direction.

The screw ring 24 is secured against rotation via the pins 25, 27 which engage in the axial guide grooves 19 of the guide sleeve 14. As a result, when the swivel actuating device 12 is actuated, one on the end face of the

Screw ring 24 derived in the circumferential direction friction force directly into the gear housing 2 se. As a result, there is advantageously no longer any undesired feedback of the frictional force acting between the sliding sleeve 13 and the screw ring 24 on the actuating force.

The pin 25, 27 of the screw ring 24 are also added radially further outward in the Ge thread groove 21 of the threaded sleeve 20. By turning the threaded sleeve 20 relative to the guide sleeve 14, the pin 25, 27 of the

Screw ring 24 and thus ultimately the sliding sleeve 13 in the axial direction. The resulting axial forces are supported in the axial stops 23, 26, for example on the guide sleeve 14. The design of the stops as a bayonet lock is particularly advantageous here, as can be seen in FIGS. 13 and 15. The slot 30 shown in Figures 5 to 9; 44 of the screw ring 24 serves to facilitate the assembly of the screw ring 24 in the groove 34 of the sliding sleeve 13. The slot or slot 30; 44 is advantageously arranged in the vicinity or in one of the pins 25, 27 of the screw ring 24. The pin 25, 27 or the axial guide of the screw ring 24 can be made wider at the location of the slot 30 in the circumferential direction than at other locations.

During assembly, the screw ring 24 is expanded within its elastic deformability and pushed over the groove edges or rims 31, 32 of the sliding sleeve 13. The screw ring 24 then springs back in the groove 34. The end faces of the rims 31, 32 of the sliding sleeve 13 and the end faces of the screw ring 24 then overlap in the radial direction, as can be seen in FIGS. 1, 2 and 4, so that axial forces can be transmitted via the end faces.

In the slot 30; 44 a receiving geometry or receiving contour 35; 45 for a bolt or a closure element 36; 46 be introduced.

As can be seen in FIG. 7, the closure element 36 can be designed in the form of a pin or a rivet. In FIG. 9 it can be seen that the closure element 46 can also be made bone-shaped. The closure element can also be designed like a clip or like a clip. A cohesive closure is also conceivable. With low axial forces, the screw ring 24 can, as can be seen in FIG. 8, only be designed as a ring segment and the closure element can be dispensed with.

In Figures 6 and 7, the slot 30 is arranged within one of the pins. Then it is advantageous to insert a spacer 37 into the slot 30, the width of which corresponds exactly to the width of a tool with which the slot 30 was created. As a result, the dimensions of the unprotected screw ring 24 correspond to that of the slotted screw ring 24. The reduction in the ring diameter and the width of the pin by closing the ring must then advantageously not be taken into account in the design.

In Figures 1 1 and 12 you can see that the guide sleeve 74 has a tab 78 which engages in a groove 79 of the threaded sleeve 70. In Figure 15 you can see that the tab 78 is one of several tabs 78, 80 which are formed on the guide sleeve 64 and protrude radially outward.

In FIG. 13 it can be seen that the threaded sleeve 70 has a recess 81 on the right. In the region of the recess 81, an opening 83 is arranged in the thread groove 71. The guide sleeve 64 has openings 84, 85 in the axial guide grooves 69 on a flange side 82.

The tabs 78, 80 arranged partially on the outer circumference of the guide sleeve 64 are assigned to the groove 79 of the threaded sleeve 70 which runs around the inner circumference. The recesses 81 provided on the inner circumference of the threaded sleeve 70 correspond in size and position to the tabs 78, 80 of the guide sleeve 74.

During assembly, the threaded sleeve 70 is placed on the guide sleeve 64, the tabs 78, 80 on the guide sleeve 64 being inserted through the recesses 81 on the threaded sleeve 70. At the end, the tabs 78, 80 are in the axial direction at the level of the groove 79 of the threaded sleeve 70.

FIG. 13 shows the starting position of guide sleeve 64 and threaded sleeve 70. Subsequent rotation of the threaded sleeve 70 moves the area of the recess 81 away from the tab 78, 80, so that the tab 78, 80 is located in the groove 79 and with its end face forms an axial stop, as can be seen in FIGS. 11 and 12.

Another axial stop is formed by the end face of the flange of the guide sleeve 64 with the end face of the threaded sleeve 70. Since the axial guide groove 69 in the guide sleeve 64 and the threaded groove 71, 75 in the threaded sleeve 70 are open on their flange sides 82, there can also be Pins 76, 77 of the screw ring 74 are threaded. Reference list

transmission

Gear housing

wave

camp

Idler gear

Synchronization

contraption

Axis of rotation

Swivel actuator

Sliding sleeve

Guide sleeve

bolt

Screw-on slugs

Blind hole

Guide groove

Threaded sleeve

1 thread groove

Control wheel

axial stop

Screw ring

Cones

axial stop

7 cones

8 actuation geometry

0 slits

1 board Board

Ring area

Ring groove

Receiving contour

Closure element

Spacer

Closing and / or spacing mechanism slitting

Receiving contour

transmission

Gear housing

wave

camp

Idler gear

Synchronization

contraption

Axis of rotation

Swivel actuation

Sliding sleeve

Guide sleeve

Mounting tab

Actuation geometry

Guide groove

Threaded sleeve

Thread groove

Control wheel

axial stop

Screw ring

Thread groove

Cones Pin tab groove

Tab recess flange side opening opening opening

Claims

1. Device (10; 60) for synchronizing and / or switching in a transmission housing (2; 52), with a pivoting actuating device (12; 62) which is pivotally actuated and which has an actuating geometry (28; 68) with one axially movable sliding sleeve (13; 63) cooperates in that the pivoting actuating movement is converted into an axial synchronizing and / or switching movement of the sliding sleeve (13; 63), characterized in that a guide sleeve (14 ; 64) is connected to the gear housing (2; 52).

2. Device according to claim 1, characterized in that the guide sleeve se (14; 64) has axial guide grooves (19; 69).

3. Device according to claim 2, characterized in that a threaded sleeve (20; 70) is rotatably mounted on the guide sleeve (14; 64).

4. The device according to claim 3, characterized in that the Schwenkbetä actuation device (12; 62) comprises an actuating wheel (22; 72) which is arranged on the threaded sleeve (20; 70).

5. The device according to claim 3 or 4, characterized in that the Ge threaded sleeve (20; 70) in the axial direction on the guide sleeve (14; 64) is supported abge.

6. Device according to one of claims 3 to 5, characterized in that the threaded sleeve (20; 70) cooperates with a screw ring (24; 74) which has radially outer pins (25; 76,77) which in an axial guide groove (19; 69) of the guide sleeve (14; 64) and se in a threaded groove (21; 71, 75) of the threaded sleeve (20; 70).

7. The device according to claim 6, characterized in that the screw ring (24; 74) has an annular region (33) which is arranged in an annular groove (34) of the sliding sleeve (13).

8. The device according to claim 6 or 7, characterized in that the

Screw ring (24) has a slot (30).

9. The device according to claim 8, characterized in that the slot (30) of the screw ring (24) comprises a closing and / or spacing mechanism (40).

10. Transmission (1; 51) with idler gears (6,7; 56,57), characterized in that a device (10; 60) according to one of the preceding claims partially radially within a running toothing of one of the idler gears (6,7; 56 , 57) is arranged.