Switching device of a two-stage planetary gear
AssigneeZF Friedrichshafen AG
InventorHarald Eckert
Life of this patent
Estimating the term…
Abstract
A two-stage planetary gear drive,-shifting device having an input shaft (1) which is connected with a sun gear (12) and an output shaft (2) which is connected to a planetary gear carrier (15), hollow internal gear (18), of the planetary gear drive, is form-fit, by a slide collar (19), to either a gear drive housing (3) or is coupled to the gear (12). The slide collar (19), is coaxial with the input drive shaft and is slidable into various shift positions by an electrical positioning member (31). It is proposed that the electrical positioning member (31) is an electromagnet, and an armature (33) of the electromagnet is connected, in a driving manner, with the slide collar (19).
Claims22
A two stage planetary gear shifting device having a sun gear, a planetary carrier (15) supporting a plurality of planetary gears (13), and a hollow internal ring gear (18), the sun gear (12) being connected to an input shaft (1) and the planetary carrier (15) being connected to an output shaft (2) to supply output drive thereto, and the hollow internal ring gear (18) being engageable, via a slide collar (19), with one of a gear drive housing (3) for the shifting device and the sun gear (12), and the slide collar (19) is coaxially slidable, with respect to the input shaft (1), into a plurality of shift positions by an electrical positioning member (31);
- wherein the positioning member (31) is an electromagnet, the electromagnet (31) has an armature (33) which is drivingly connected with the slide collar (19), the sliding collar comprises an outer part (20) and the inner part (21) with a bearing (22) located between the outer part (20) and the inner part (21), and the electromagnet (31) has a retaining element which retains the armature (33) in a desired one of the plurality of shift positions.
A two stage planetary gear shifting device having a sun gear, a planetary carrier (15) supporting a plurality of planetary gears (13), and a hollow internal ring gear (18), the sun gear (12) being connected to an input shaft (1) and the planetary. carrier (15) being connected to an output shaft (2) to supply output drive thereto, and the hollow internal ring gear (18) being engageable, via a slide collar (19),with one of a gear drive housing (3) for the shifting device and the sun gear (12), and the slide collar (19) is coaxially slidable,with respect to the input shaft (1), into a plurality of shift positions by an electrical positioning member (31);
- wherein the positioning member (31) is, an electromagnet, the electromagnet (31) has an armature (33) which is drivingly connected with the slide collar (19), the electromagnet (31) has a retaining element which retains the armature (33) in a desired one of the plurality of shift positions, and a pivoting lever (25) couples the electromagnet (31) to the slide collar (19), and the pivoting lever(25) has one end (27) linked to the armature (33) and an opposite end (26) linked to the slide collar(19).
The shifting device according to claim 29, wherein the armature (33) of the electromagnet (31) has a transverse bore (34) into which a round head (28), provided on one end (27) of the pivot lever (25), engages.
A two stage planetary gear shifting device having a sun gear, a planetary carrier (15) supporting a plurality of planetary gears (13), and a hollow internal ring gear (18), the sun gear (12) being connected to an input shaft (1) and the planetary carrier (15) being connected to an output shaft (2) to supply output drive thereto;
- and the hollow internal ring gear (18) being engageable, via a slide collar (19), with one of a gear drive housing (3) for the shifting device and the sun gear (12), and the slide collar (19) is coaxially slidable, with respect to the input shaft (1), into a plurality of shift positions by an electrical positioning member (31);
- wherein the positioning member (31) is an electromagnet, the electromagnet (31) has an armature (33) which is drivingly connected with the slide collar (19), the sliding collar comprises an outer part (20) and an inner part (21) with a bearing (22) located between the outer part (20) and the inner part (21), the electromagnet (31) has a retaining element which retains the armature (33) in a desired one of the plurality of shift positions, and the outer part (20) of the slide collar (19) is non-rotatably secured to the gear drive housing (3), by a bearing axial bolt (23), which allows axial movement of the slide collar (19) but prevent rotation of the outer part (20) of the slide collar (19).
Dependencies are inferred from the claim text.