Gear shifting point for the establishment of a connection, fixed against rotation, between a gear and a shaft
AssigneeDeere & Company
InventorsNicolai Tarasinski, Rainer Gugel
Life of this patent
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AssigneeDeere & Company
InventorsNicolai Tarasinski, Rainer Gugel
Estimating the term…
The invention relates to a gear shifting point (10) for producing a rotationally fixed connection between a toothed wheel (16, 18) and a shaft (12). Said gear shifting point (10) comprises a shaft (12), a sliding sleeve (24) and at least one toothed wheel (16, 18). The toothed wheel (16, 18) is mounted rotationally with respect to the shaft (12). The sliding sleeve (24) is mounted on the shaft (12) in such a way that it is not rotatable therewith. The toothed wheel (16, 18) and the sliding sleeve (24) are embodied in such a way that a rotationally fixed connection can be produced therebetween in the coupled state of the gear shifting point (10) and no connection can be produced between the toothed wheel (16, 18) and the sliding sleeve (24) in the neutral state of the gear shifting point (10). The aim of said invention is to develop and improve the gear shifting point (10) which is used for producing a rotationally fixed connection between the toothed wheel (16, 18) and the shaft (12), is cost effective and operates in as interference-free manner as possible. For this purpose, the inventive gear shifting point (10) is characterized in that the sliding sleeve (24) is provided with at least one electromagnet (38, 40) and the coupled state of the gear shifting point (10) is obtainable by activating said electromagnet (38, 40).
A gear shifting apparatus for the establishment of a positive locking connection between a gear and a shaft, comprising a shaft, a shift sleeve with at least one electromagnet, the shift sleeve being connected to the shaft, and at least one gear, where the at least one gear is supported in bearings, free to rotate relative to the shaft, where the shift sleeve is fixed against rotation on the shaft, and where the gear and the shift sleeve are configured in such a way that a positive locking connection can be established in a shifted condition of the gear shifting apparatus between the gear and the shift sleeve and that in a neutral condition of the gear shifting apparatus no positive locking connection is established between the gear and the shift sleeve, wherein one of the shift sleeve and the at least one electromagnet interacts with at least one synchronizing element with which a frictional locking connection between the at least one gear and the shift sleeve is established upon activation of the at least one electromagnet in order to bring the at least one gear to a rotational speed substantially equal to the rotational speed of the shift sleeve before establishing the positive locking connection, wherein the at least one synchronizing element is arranged so that it is moved in the longitudinal direction of the shaft relative to the gear, the synchronizing element being configured in the shape of one of a ring and a cylinder and being arranged in a recess of one of the gear and the electromagnet, the recess being in the shape of one of a ring and a cylinder.
Dependencies are inferred from the claim text.