Ball screw drive
US9746059B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2013 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Jun 28, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19772
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ball screw drive with a spindle nut (1) arranged on a screw spindle (2) and a continuous ball channel (7) formed by the screw spindle (2) and the spindle nut (1), in which channel balls arranged along a continuous ball track (8) circulate continuously, wherein the continuous ball channel (7) includes a load channel (9) wound in a spiral shape, with more than one winding, about a spindle axis (S) and a deflecting channel (10) which continuously connects the two ends of the load channel (9) to one another, wherein the spindle nut (1) has a nut part (4), on the inner circumference of which a ball groove (6) is formed being wound in a spiral shape about the spindle axis S, which ball groove, together with a ball groove (3) of the screw spindle (2) being wound in a spiral shape about the spindle axis S, forms the load channel (9), and wherein a deflecting element (5) including the deflecting channel (10) is arranged on the outer periphery of the nut part (4), and the deflecting ends (12) of the deflecting element (5) axially spaced apart from one another each penetrate a recess (11) through the thickness of the wall of the nut part (4), in order to deflect balls from the load channel …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.