Gear shifting facilitation scheme for a transmission mechanism stage with a shift device

Abstract

The invention relates to a gear stage, comprising a sun wheel (37), which can be moved along an axis of the sun wheel (37) between a first position, in which the sun wheel (37) is mechanically connected to a planet carrier (27) by means of a connecting device, and a second position, in which the sun wheel (37) is disconnected from the planet carrier (27); wherein the connecting device comprises a spacer ring (100), which is connected at the planet carrier (27); wherein the gear stage further comprises a resilient device (110), which connects the spacer ring (100) with the planet carrier (27) and is configured to effect a displacement of the spacer ring (100) in the region between the planet carrier (27) and the sun wheel (37) in the radial direction and / or in the direction of rotation.

Claims

1. Transmission mechanism stage, including: The sun gear (37) is movable between a first position and a second position along its axis. In the first position, the sun gear (37) is mechanically connected to the planet carrier (27) by a connecting device. In the second position, the sun gear (37) is disengaged from the planet carrier (27). The transmission mechanism stage further includes a shaft (13) configured to provide rotational motion to the transmission mechanism stage. The transmission mechanism stage also includes a planetary gear transmission stage (10), comprising: an externally geared sun gear (18) capable of being driven by the shaft (13); an internally geared hollow gear (28); and a rotatably supported planet carrier (27), at least one externally geared planet gear (25) rotatably supported on the planet carrier, the externally geared planet gear engaging with both the externally geared sun gear (18) and the hollow gear (28). The connecting device is characterized by comprising: Spacer ring (100), the spacer ring being connected to the planet carrier (27); A flexible device (110) connects the spacer ring (100) to the planet carrier (27) and is configured to allow the spacer ring (100) to be offset radially and / or in the direction of rotation in the region between the planet carrier (27) and the sun gear (37).

2. The transmission mechanism stage according to claim 1, wherein, The spacer ring (100) has an outer contour (102) corresponding to the inner contour of the planet carrier (27), wherein there is a gap (D1) between the outer contour (102) of the spacer ring (100) and the inner contour of the planet carrier (27) to allow the spacer ring (100) to be offset radially and / or in the direction of rotation.

3. The transmission mechanism stage according to claim 1 or 2, wherein, The spacer ring (100) has internal teeth (101) configured to engage with external teeth of the sun gear (37) when the sun gear (37) is brought from the second position to the first position, and wherein the resilient device is configured such that the force generated between the external teeth of the sun gear (37) and the internal teeth of the spacer ring (100) causes the spacer ring (100) to deflect.

4. The transmission mechanism stage according to claim 1 or 2, wherein, The spacer ring (100) is connected to the inner toothed portion of the planet carrier (27) by a plug tooth.

5. The transmission mechanism stage according to claim 1 or 2, wherein, The transmission mechanism also includes a stop ring, which fixes the axial position of the spacer ring (100).

6. The transmission mechanism stage according to claim 1 or 2, wherein, The elastic device comprises a number of springs arranged along the circumferential surface of the spacer ring (100).

7. The transmission mechanism stage according to claim 6, wherein, The spring is S-shaped.

8. The transmission mechanism stage according to claim 1 or 2, wherein, The transmission mechanism stage also includes a shaft (13) configured to provide rotational motion to the transmission mechanism stage, wherein the sun gear (37) is rotatably supported on the sun gear portion (15) of the shaft (13).

9. The transmission mechanism stage according to claim 6, wherein, A spring has a constant angular distance.

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