US 12,215,775 B2
Shaft assembly for use in a dual clutch transmission system for improved lubrication and other improved parts of transmission systems
Rens Obelink, Sint-Truiden (BE); Bert Johannes Cornelis Van Bakel, Sint-Truiden (BE); Mohammad Galab, Sint-Truiden (BE); Roy Bastiaansen, Sint-Truiden (BE); and Vilmar Gomes Pereira, Sint-Truiden (BE)
Assigned to PUNCH POWERTRAIN PSA E-TRANSMISSIONS N.V., Sint-Truiden (BE)
Appl. No. 18/018,258
Filed by PUNCH POWERTRAIN PSA E-TRANSMISSIONS N.V., Sint-Truiden (BE)
PCT Filed Jul. 20, 2021, PCT No. PCT/EP2021/070225
§ 371(c)(1), (2) Date Jan. 26, 2023,
PCT Pub. No. WO2022/023115, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2026152 (NL), filed on Jul. 28, 2020.
Prior Publication US 2023/0287974 A1, Sep. 14, 2023
Int. Cl. F16H 57/04 (2010.01); F16D 13/64 (2006.01); F16D 25/0638 (2006.01); F16D 25/08 (2006.01); F16D 25/10 (2006.01); F16H 3/00 (2006.01); F16H 61/00 (2006.01)
CPC F16H 57/0426 (2013.01) [F16D 13/648 (2013.01); F16D 25/0638 (2013.01); F16D 25/082 (2013.01); F16D 25/10 (2013.01); F16H 2061/0046 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A shaft assembly for use in a dual clutch transmission system to be installed in a power train of a motor vehicle for selectively coupling three rotating transmission members, wherein the shaft assembly extends along a central axis and comprises:
a transmission member comprising
a first axial end and a second axial end relative to the central axis, wherein the first axial end is configured to be rotatably connected to a shaft part, and
a first bore extending along the central axis from the first axial end in a direction towards the second end, wherein the first bore is open at the first axial end and comprises a closed bore end opposite the first axial end, wherein the first bore comprises a stepped closed bore end section in which a diameter of the first bore decreases stepwise towards the closed bore end;
a shaft part comprising a second bore extending along the central axis from a first axial end of the shaft part to a second axial end of the shaft part, wherein the second bore comprises a main section and an insert receiving section at the first axial end of the shaft part adjacent to the main section; and
a hollow tube shaped insert placed in the bore at the insert receiving section, wherein a first channel extends through the bore and an inside of the hollow tube shaped insert, wherein an outer diameter of the hollow tube shaped insert is smaller than an inner diameter of the bore at the insert receiving section such that a second channel is arranged between the hollow tube shaped insert and the shaft part and concentrically relative to the first channel.