Transmission comprising an oil-guiding channel component
A transmission ( 100 ) including a transmission gear ( 107 ) arranged in a transmission housing ( 140 ) and in an oil sump ( 150 ). The transmission ( 100 ) includes an oil-guiding channel component ( 1 ) having a guide channel ( 2 ) and an oil collection region ( 13 a ) having a drain ( 15 a ). During operation, oil enters an inlet port ( 11 ) of the guide channel ( 2 ) and passes along the oil guidance direction (F) of the guide channel ( 2 ) to an outlet port ( 12 ) of the guide channel ( 2 ). The oil collection region ( 13 a ) includes a first reservoir ( 13 ) having a first reservoir wall ( 25 ) and a reservoir base ( 24 ). The inlet port ( 11 ) is located at the end face of the transmission gear ( 107 ), the reservoir base ( 24 ) is located above the transmission gear ( 107 ), and the oil guidance direction (F) from the inlet port ( 11 ) to the outlet port ( 12 ) extends opposite the direction of gravity (G).
1 . A transmission ( 100 ) comprising:
a transmission housing ( 140 ) and at least one transmission gear ( 107 ) arranged in the transmission housing ( 140 ), wherein the at least one transmission gear ( 107 ) is arranged at least partially in an oil sump ( 150 ) of the transmission ( 100 ), wherein the transmission ( 100 ) comprises an oil-guiding channel component ( 1 ), wherein the oil-guiding channel component ( 1 ) comprises a guide channel ( 2 ) spaced from the transmission housing ( 140 ) and comprising an inlet port ( 11 ) and comprising an outlet port ( 12 ), wherein the guide channel ( 2 ) has an oil guidance direction (F) from the inlet port ( 11 ) to the outlet port ( 12 ) and a channel wall ( 21 ) which is closed perpendicular to the oil guidance direction (F), wherein the oil-guiding channel component ( 1 ) further comprises at least one oil collection region ( 13 a ) for collecting oil guided through the guide channel ( 2 ), wherein the oil-guiding channel component ( 1 ) comprises at least one drain ( 15 a ) for oil from the at least one oil collection region ( 13 a ), wherein the oil-guiding channel component ( 1 ) is arranged in the transmission housing ( 100 ) such that, during operation, oil raised from the oil sump ( 150 ) by the at least one transmission gear ( 107 ) passes into the inlet port ( 11 ) and along the oil guidance direction (F) of the guide channel ( 2 ) to the outlet port ( 12 ), wherein the at least one oil collection region ( 13 a ) comprises a first reservoir ( 13 ), wherein the first reservoir ( 13 ) comprises a first reservoir wall ( 25 ) and a first reservoir base ( 24 ) defining a bottom wall of the first reservoir ( 13 ), wherein the oil-guiding channel component ( 1 ) is arranged in the transmission housing ( 140 ) in a specified mounting state, which defines an orientation of the oil-guiding channel component ( 1 ) in the transmission housing ( 140 ) relative to a force of gravity (G) such that the inlet port ( 11 ) is positioned at an end face of the at least one transmission gear ( 107 ), which is arranged at least partially in the oil sump ( 150 ), the first reservoir base ( 24 ) is positioned entirely above the at least one transmission gear ( 107 ), and the oil guidance direction (F) from the inlet port ( 11 ) to the outlet port ( 12 ) extends counter to the force of gravity (G), wherein an end of the channel wall ( 21 ) of the guide channel ( 2 ) facing away from the inlet port ( 11 ) forms a first wall ( 21 a ) extending through and projecting into the at least one oil collection region ( 13 a ) and delimiting the outlet port ( 12 ) such that oil emerging from the outlet port ( 12 ) of the guide channel ( 2 ) collects in the first reservoir ( 13 ), draining in the direction of gravity (G), wherein the first wall ( 21 a ) is above the first reservoir base ( 24 ) and another portion of the channel wall ( 21 ) is below the first reservoir base ( 24 ).
2 . The transmission ( 100 ) according to claim 1 , wherein the guide channel ( 2 ) is straight and extends tangentially to an end face of the at least one transmission gear ( 107 ) at least in a region of the at least one transmission gear ( 107 ), and the inlet port ( 11 ) is positioned in an immediate vicinity of the end face of the at least one transmission gear ( 107 ).
3 . The transmission ( 100 ) according to claim 1 , wherein the transmission comprises a drive shaft ( 101 ) and an output shaft ( 102 ), wherein the output shaft ( 102 ) can be driven by the at least one transmission gear ( 107 ), wherein a coupling element ( 122 ) is coupled to the at least one transmission gear ( 107 ) such that the at least one transmission gear ( 107 ) can be driven by the coupling element ( 122 ), wherein a coupling device ( 120 ) comprising a coupling element ( 121 ) is provided in the transmission, wherein the coupling element ( 121 ) of the coupling device ( 120 ) is coupled to the drive shaft ( 101 ) in a rotationally fixed manner, wherein, by the coupling device ( 120 ), the coupling element ( 121 ) can be coupled to and uncoupled from the coupling element ( 122 ) in a rotationally fixed manner, and wherein the oil-guiding channel component ( 1 ) comprises a first drain ( 15 ) which projects from the first reservoir wall ( 25 ) above the first reservoir base ( 24 ) and comprises a drain port ( 17 ), through which draining oil is guided to a bearing ( 176 ) of a pinion ( 106 ) rotatably mounted on the drive shaft ( 101 ) and non-rotatably coupled to the coupling element ( 122 ).
4 . The transmission ( 100 ) according to claim 3 , wherein the drive shaft ( 101 ) is configured as a hollow shaft comprising an axial bore ( 173 ), wherein the pinion ( 106 ) meshes with the at least one transmission gear ( 107 ), wherein oil draining from the drain port ( 17 ) of the first drain ( 15 ) passes into the axial bore ( 173 ) of the drive shaft ( 101 ) and from there via at least one radial bore ( 174 ) to the bearing ( 176 ).
5 . The transmission ( 100 ) according to claim 4 , wherein the oil draining from the drain port ( 17 ) of the first drain ( 15 ) passes into a chamber ( 146 ), which is formed on a first housing component ( 141 ) of the transmission housing ( 140 ) and within which a baffle plate ( 180 ) is arranged, wherein a channel section ( 181 ) is formed centrally on the baffle plate ( 180 ), wherein the channel section ( 181 ) engages in the axial bore ( 173 ) of the drive shaft ( 101 ), wherein oil contained in the chamber ( 146 ) drains via the baffle plate ( 180 ) into the channel section ( 181 ) and thus enters the axial bore ( 173 ) of the drive shaft ( 101 ).
6 . The transmission according to claim 4 , wherein the bearing ( 176 ) is a nail bearing.
7 . The transmission ( 100 ) according to claim 1 , wherein a rotor shaft ( 103 ) of an electric machine ( 110 ) mounted in at least one bearing ( 175 ) in the transmission housing is provided, wherein the transmission comprises a drive shaft ( 101 ), wherein it is possible for the drive shaft ( 101 ) to be driven by the rotor shaft ( 103 ), and wherein the at least one oil collection region ( 13 a ) of the oil-guiding channel component ( 1 ) comprises a second reservoir ( 14 ), wherein the second reservoir ( 14 ) comprises a second reservoir wall ( 27 ) and a second reservoir base ( 26 ), wherein the second reservoir ( 14 ) is connected to the first reservoir ( 13 ) via a connection channel ( 29 ), wherein a second drain ( 16 ) projects in a specified mounting direction above the second reservoir base ( 26 ) from the second reservoir wall ( 27 ) of the second reservoir ( 14 ) and comprises an drain port ( 18 ), through which oil is guided in a direction of the at least one bearing ( 175 ) of the rotor shaft ( 103 ).
8 . The transmission ( 100 ) according to claim 7 , wherein an edge of the first wall ( 21 a ) on a side facing the first reservoir ( 13 ) is at a distance from the first reservoir base ( 24 ), which is smaller than a distance between the edge of the first wall ( 21 a ) and the second reservoir base ( 26 ) on a side facing the second reservoir ( 14 ), and wherein, when the at least one transmission gear ( 107 ) rotates, oil first enters the first reservoir ( 13 ) before oil enters the second reservoir ( 14 ) via the connection channel ( 29 ).
9 . The transmission ( 100 ) according to claim 1 , wherein the transmission housing ( 140 ) comprises a first housing component ( 141 ) having a first housing wall region ( 143 ) and a second housing component ( 142 ), which is placed on the first housing component ( 141 ) and comprises a second housing wall region ( 144 ), wherein a third housing wall region ( 145 ) is provided in a support region of the first housing component ( 141 ) and the second housing component ( 142 ), wherein the first housing wall region ( 143 ), the second housing wall region ( 144 ) and the third housing wall region ( 145 ) enclose an end of the at least one transmission gear ( 107 ) facing away from the oil-guiding channel component ( 1 ) in the oil sump ( 150 ) on three sides.
10 . The transmission according to claim 9 , wherein a pump system is formed by the first housing wall region ( 143 ), the second housing wall region ( 144 ), the third housing wall region ( 145 ), the at least one transmission gear ( 107 ), and the guide channel ( 2 ), by which pump system oil is transported from the oil sump ( 150 ) through the guide channel ( 2 ) against the force of gravity (G) to the outlet port ( 12 ) of the guide channel ( 2 ) when the at least one transmission gear ( 107 ) rotates.
11 . The transmission ( 100 ) according to claim 1 , wherein the at least one transmission gear ( 107 ) is coupled in a rotationally fixed manner to a differential ( 130 ) of the transmission ( 100 ), wherein a first output shaft ( 102 a ) and a second output shaft ( 102 b ) are coupled to the differential ( 130 ), wherein the first output shaft ( 102 a ) and the second output shaft ( 102 b ) are driven in a rotational manner by the differential ( 103 ).
12 . The transmission according to claim 1 , wherein the transmission is a motor vehicle transmission.
13 . The transmission according to claim 1 , wherein the at least one oil collection region ( 13 a ) of the oil-guiding channel component ( 1 ) comprises a second reservoir ( 14 ), wherein the second reservoir ( 14 ) comprises a second reservoir wall ( 27 ) and a second reservoir base ( 26 ), wherein the second reservoir ( 14 ) is connected to the first reservoir ( 13 ) via a connection channel ( 29 ).