Transmitter for a manual transmission for a motor vehicle, assembly with transmitter, transmission shaft and transmission gear as well as transmission

Abstract

A transmitter for producing a rotationally fixed connection between a transmission shaft and a transmission gear rotatably mounted on the transmission shaft comprises a transmitter disk and a clutch toothing associated with the transmitter disk. The transmitter disk is provided with a transmitter toothing on its outside.

Claims

1. A transmitter for producing a rotationally fixed connection between a transmission shaft and a transmission gear rotatably mounted on said transmission shaft, said transmitter comprising a transmitter disk and a clutch toothing associated to said transmitter disk, said transmitter disk being provided with a transmitter toothing at an outer circumference of said transmitter disk wherein said clutch toothing is provided on a clutch disk, wherein said clutch disk is arranged on a front side of said transmitter disk and is connected with said transmitter disk in an axial direction.

2. The transmitter of claim 1 wherein two synchronizer rings are mounted on said transmitter disk.

3. The transmitter of claim 1 wherein an actuating element is coupled to said transmitter disk in axial direction.

4. An assembly with a transmission shaft, a transmission gear rotatably mounted on said transmission shaft, and a transmitter for producing a rotationally fixed connection between said transmission shaft and said transmission gear rotatably mounted on said transmission shaft, said transmitter comprising a transmitter disk and a clutch toothing associated to said transmitter disk, said transmitter disk being provided with a transmitter toothing at an outer circumference of said transmitter disk, wherein an actuating element engages said transmitter disk, said actuating element extending in an axial direction proceeding from said transmitter disk, and wherein said actuating element is either arranged around said transmission shaft in a manner of a sleeve or is arranged within said transmission shaft.

5. The assembly of claim 4 wherein said actuating element is arranged around said transmission shaft in a manner of a sleeve.

6. The assembly of claim 4 wherein said actuating element is arranged within said transmission shaft.

7. The assembly of claim 6 wherein said actuating element is coupled with said transmitter disk through an opening in said transmission shaft.

8. The assembly of claim 4 wherein said transmission gear is provided with a transmission gear toothing with which said transmitter toothing can be brought in engagement.

9. The assembly of claim 8 wherein said transmission gear toothing is designed integrally with said transmission gear.

10. The assembly of claim 8 wherein said transmission gear toothing is provided on an inner circumference of a transmission gear toothed washer which is non-rotatably connected with said transmission gear.

11. The assembly of claim 8 wherein said transmission gear is provided with a friction surface which can cooperate with a synchronizer ring.

12. The assembly of claim 11 wherein said friction surface is provided directly on said transmission gear.

13. The assembly of claim 11 wherein said friction surface is directed radially to the outside.

14. The assembly of claim 11 wherein said friction surface is directed radially to the inside.

15. The assembly of claim 11 wherein said friction surface is arranged radially within said transmission gear toothing.

16. A transmission comprising an assembly with a transmission shaft, a transmission gear rotatably mounted on said transmission shaft, and a transmitter for producing a rotationally fixed connection between said trans-mission shaft and said transmission gear rotatably mounted on said transmission shaft, said transmitter comprising a transmitter disk and a clutch toothing associated to said transmitter disk, said transmitter disk being provided with a transmitter toothing at an outer circumference of said transmitter disk, wherein said clutch toothing is provided on a clutch disk, wherein said clutch disk is arranged on a front side of said transmitter disk and is connected with said transmitter disk in an axial direction, and further comprising a housing which is provided with a blocking toothing with which said transmitter toothing can be brought in engagement.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be described below with reference to various embodiments which are shown in the attached drawings, in which:

(2) FIG. 1 in a section schematically shows a synchronising assembly known from the prior art;

(3) FIG. 2 in an exploded view shows the synchronizing assembly of FIG. 1;

(4) FIG. 3 in a perspective view shows a transmitter with synchronizer rings mounted thereon;

(5) FIG. 4 in a perspective view shows the synchronizer rings of FIG. 3;

(6) FIG. 5 in a perspective view shows the transmitter of FIG. 3;

(7) FIG. 6 shows a section along the plane VI-VI of FIG. 1;

(8) FIG. 7 shows a section along the plane VII of FIG. 6;

(9) FIG. 8 shows a section along the plane VIII of FIG. 6;

(10) FIG. 9 in a section schematically shows a part of a transmission according to a first embodiment of the invention; and

(11) FIG. 10 in a view corresponding to the one of FIG. 8 shows a second embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

(12) With reference to FIG. 9 a first embodiment of a transmitter according to the invention now will be described. For the components which are known already from FIGS. 1 to 8 the same reference numerals are being used, and in so tar reference is made to the above explanations.

(13) The essential difference between the assembly as it is shown in FIG. 9 and the assembly known from FIGS. 1 to 8 is that the torque transmission between the transmitter disk 20 and one of the transmission gears (here the transmission gear 12) is not effected via a clutch disk with clutch disk toothing, but by a transmitter toothing 25 formed on the transmitter disk 20.

(14) The transmitter toothing 25 here is provided directly on the transmitter disk 20, namely in the form of teeth on the outer circumference of the transmitter disk.

(15) The transmitter disk 20 with the transmitter toothing 25 can be formed as flat component for example of sheet metal which is stamped.

(16) A further difference between the transmitter disk 20 used in the embodiment according to FIG. 9 and the transmitter disk known from FIGS. 1 to 8 is that in the embodiment according to FIG. 8 the transmitter disk is provided with a transmitter disk internal toothing 21. Similar to the clutch disk internal toothing 26, the same non-rotatably, but axially shiftably engages into the transmission shaft toothing 28.

(17) On the transmission gear 12 a transmission gear toothing 60 is provided, with which the transmitter toothing 25 can be brought in engagement. The transmission gear toothing 80 here is provided on a transmission gear toothed washer 62 which is non-rotatably connected with the transmission gear 12, for example by welding.

(18) The transmission gear toothed washer 62 can be a stamped sheet-metal component, which possibly is hardened at least in the region of the transmission gear toothing 60.

(19) Alternatively, it is also possible to form the transmission gear toothing 60 integrally with the transmission gear 12.

(20) In the embodiment shown in FIG. 9, the transmitter disk 20 also carries two synchroniser rings 30, 31. In contrast to the embodiment shown in FIGS. 1 to 8, the two synchronizer rings however have a different geometry. The synchronizer ring 30 slightly flares conically to the outside proceeding from the transmitter disk 20 so that it can be pushed onto the conical friction surface 32 directed to the outside, which is provided on the component 17. The synchronizer ring 31 on the other hand tapers in an axial direction away from the transmitter disk 20 so that it can be pushed into a conical friction surface 33 directed radially to the inside, which is formed on the transmission gear 12.

(21) The friction surface 33 here is formed as shoulder on the transmission gear 12, i.e. integrally with the same. In principle, however, it also is possible to form a separate component on the transmission gear 12, on which the friction surface then is provided.

(22) The transmitter disk 20 is engaged by an actuating element 70 with which the transmitter disk 20 can be shifted on the transmission shaft 10 in an axial direction. The actuating element 70 performs the function of a shift fork which in the embodiment according to FIGS. 1 to 8 engages the outside of the transmitter disk 20, in order to shift the same in an axial direction.

(23) In the embodiment according to FIG. 9, the actuating element 70 is designed in the manner of a sleeve which surrounds the transmission shaft 10. The actuating element 70 engages the transmitter disk 20 with a flange 72 which is arranged at the point where the second clutch disk 22 is arranged in the embodiment according to FIGS. 1 to 8.

(24) With regard to the mode of operation during synchronizing and shifting gears, the embodiment according to FIG. 9 does not differ from the embodiment according to FIGS. 1 to 8. When the transmitter disk 20 is actuated in one direction proceeding from the neutral position (see the arrow S), the two synchronizer rings 30, 31 are carried along in the corresponding direction. The synchronizer ring located at the front in shifting direction gets in engagement with the corresponding friction surface 32, 33, and the process of synchronizing starts. When the speeds of the transmission shaft and the corresponding transmission gear 12, 14 are adapted to each other, the transmitter disk 20 can be shifted through, so that either when the transmission gear 12 is shifted, the torque is transmitted from the transmission shaft 10 via the transmitter disk internal toothing 21, the transmitter disk 20, the transmitter toothing 25 and the transmission gear toothing 60 to the transmission gear 12, or when the transmission gear 14 is shifted, the torque is transmitted from the clutch disk internal toothing 26 via the clutch disk 22 and the clutch toothing 24 to the component 17 and from the same to the transmission gear 14.

(25) The advantage of the embodiment according to FIG. 9 as compared to the embodiment according to FIGS. 1 to 8 is in particular that a more compact construction is possible in an axial direction. As can be seen in FIG. 9, the teeth of the transmission gear 12 can be arranged very close to the transmitter disk 20 in an axial direction. In the embodiment shown, the running teeth of the transmission gear 12 protrude beyond the transmitter disk 20. This is possible because the arrangement of the transmission gear toothing and the friction surface on the transmission gear are interchanged as compared to the embodiment according to FIGS. 1 to 8. The friction surface 33 on the transmission gear 12 is arranged radially within the transmission gear toothing 60, and the transmission gear toothing 60 is arranged closer to the transmitter disk than the friction surface 33.

(26) It is not absolutely necessary to couple the actuating element 70 laterally within the synchronizer rings 30, 31. It might also be provided that radially outside the synchronizer rings 30, 31 on the side of the transmission gear 14 an add-on part is provided al the transmitter disk 20, with which laterally of the transmitter toothing 25 a groove or a circumferential edge is formed so that a sliding block or a shift fork can engage there.

(27) FIG. 10 shows a further embodiment. For the components known from the preceding embodiments the same reference numerals are used, and in so far reference is made to the above explanations.

(28) The difference between the embodiment according to FIG. 10 and the embodiment according to FIG. 9 is that in the embodiment according to FIG. 10 the transmitter merely engages one transmission gear (here the transmission gear 14). When the transmitter disk 20 is shitted to the right proceeding from the neutral position shown in FIG. 10, it gets in engagement with a blocking toothing 80 provided on a housing 82 of the transmission, in which the transmission shaft 10 is mounted.

(29) The blocking toothing 80 here is designed integrally with the housing 82. It also is possible to provide the blocking toothing 80 similar to the transmission gear toothing 60 in the embodiment according to FIG. 9 on a separate component which then is mounted on the housing 82.

(30) A further difference between the embodiment according to FIG. 10 and the embodiment according to FIG. 9 is that in the embodiment according to FIG. 10 the actuating element 70 is arranged within the transmission shaft 10. It is provided with an actuating tab 74 which extends radially to the outside through an opening 76 in the transmission shaft 10 and is connected with the transmitter disk 20.

(31) In the embodiment according to FIG. 10 a friction surface 32 is provided on the housing 82, which in the same way as the friction surface 32 on the component 17 is directed radially to the outside. Thus, two synchronizer rings 30 with identical geometry can be arranged on the transmitter disk.

(32) When the transmitter disk 20 in the embodiment according to FIG. 10 is shifted to the left starting from the illustrated neutral position, a shifting operation is effected in a known way with the transmission gear 14. When the transmitter disk 20 however is shitted to the right, a kind of synchronizing operation is effected, which leads to the fact that the speed of the transmission shaft 10 is brought to zero until finally the transmitter disk 20 can be shifted through. The transmission shaft 10 thereby is non-rotatably blocked in the housing 82 via the transmission shaft toothing 28, the transmitter disk internal toothing 21, the transmitter toothing 25 and the blocking toothing 80.

(33) According to a non-illustrated development, the actuating element 70 arranged within the transmission shaft also can be used in the embodiment according to FIG. 9, in which two transmission gears are shifted with the transmitter disk. Conversely, the sleeve-like actuating element 70 known from the embodiment of FIG. 9 also can be used in the embodiment according to FIG. 10, in which the transmitter disk can be brought in engagement with the blocking toothing 80.

(34) Furthermore, in the embodiment according to FIG. 9 there can also be used a friction surface 32 directed radially to the outside, as it is used in the embodiment according to FIG. 10. Conversely, in the embodiment according to FIG. 10 a friction surface 33 directed radially to the inside can be used on the side of the housing 82, as it is known from the embodiment according to FIG. 9.