Gear transmission mechanism with a layshaft
AssigneeZF Friedrichshafen AG
InventorMichael Drabek
Life of this patent
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Abstract
A gear transmission mechanism (2) for motor vehicles having a main shaft (10, 12) and a countershaft (14) parallel to one another, on which different gears for different gear ratios are arranged. The countershaft (14) is arranged above a horizontal plane (X-Y axis) containing a main shaft axis (16) with respect to the axle system of the vehicle so that installation space for the functional components (gearshift elements 18, a hydraulic system 20) of the transmission is available below the gearset formed by the gearbox wheels.
Claims12
A gear transmission mechanism for a motor vehicle consisting of only one countershaft, the mechanism comprising:
- a main shaft having at least one gear and defining a rotational axis (16);
- the countershaft having at least one gear, and the countershaft extending substantially parallel to the rotational axis of the main shaft;
- the at least one gear of the main shaft communicating with the at least one gear of the countershaft to provide at least one gear ratio,
- the rotational axis (16) of the main shaft (X axis) intersecting a drive axis (Y axis) to define a substantially horizontal plane (X-Y axis), and the countershaft (14) being located along a vertical axis (Z) above the substantially horizontal plane (X-Y axis), when viewed along the substantially horizontal plane (X-Y axis), and
- a hydraulic system of the gear transmission mechanism being located in a space vertically below the substantially horizontal plane (X-Y axis), wherein the main shaft is vertically located between the countershaft and the hydraulic system, the horizontal plane (X-Y) being normal to the vertical axis (Z).
A gear transmission mechanism for a motor vehicle consisting of only one countershaft, the mechanism comprising:
- a main shaft having at least one gear and defining a rotational axis (16);
- the countershaft having at least one gear, and the countershaft extending substantially parallel to the rotational axis of the main shaft;
- the at least one gear of the main shaft communicating with the at least one gear of the countershaft to provide at least one gear ratio;
- the rotational axis (16) of the main shaft (X axis) intersecting a drive axis (Y axis) to define a substantially horizontal plane (X-Y axis), and the countershaft (14) being located above the substantially horizontal plane (X-Y axis), when viewed along the horizontal plane (X-Y axis), the horizontal plane being normal to a vertical axis (Z), and
- both gearshift elements (18) for shifting the gears of the gear transmission mechanism and a hydraulic system (20) of the gear transmission mechanism being located in a space along the vertical axis (Z) vertically below the horizontal plane (X-Y axis), wherein the main shaft is vertically located between the countershaft and a grouping of both of the gearshift elements (18) and the hydraulic system (20), and the main shaft and the countershaft are aligned along the vertical axis (Z).
A gear transmission mechanism for a motor vehicle consisting of only one countershaft, the mechanism comprising:
- a main shaft having at least one gear and defining a rotational axis (16);
- the countershaft having at least one gear, and the countershaft extending substantially parallel to the rotational axis of the main shaft;
- the at least one gear of the main shaft communicating with the at least one gear of the countershaft to provide at least one gear ratio,
- the rotational axis (16) of the main shaft (X axis) intersecting a drive axis (Y axis) to define a substantially horizontal plane (X-Y axis), and the countershaft (14) being located above the horizontal plane (X-Y axis), when viewed along the horizontal plane (X-Y axis), the horizontal plane (X-Y) being normal to a vertical axis (Z), and
- gearshift elements (18), for shifting the gears of the gear transmission mechanism, a hydraulic system (20) of the gear transmission mechanism and an oil pan are all located along the vertical axis (Z) in a space vertically below the horizontal plane (X-Y axis) wherein the main shaft is vertically located between the countershaft and a grouping of the gearshift elements (18), the hydraulic system (20) and the oil pan (24), and the main shaft and the countershaft are aligned with each other along the vertical axis (Z).
Dependencies are inferred from the claim text.