Title:
IMPROVED BALL SCREW DEVICE, BRAKING SYSTEM COMPRISING THIS BALL SCREW DEVICE, AND VEHICLE COMPRISING THIS BRAKING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/104649
Kind Code:
A1
Abstract:
The invention relates to a ball screw device, comprising: a screw (11) which cooperates with a nut (12) via balls, the balls being guided along a helical path by complementary threads (15, 16) which are provided in the screw (11) and the nut (12); a channel (20) which defines a recirculation path of the balls, this recirculation channel (20) being provided at least partly in the nut (12) and comprising one end (20R) for recovering the balls at the end of the helical path and one end (20I) for inserting the balls at the start of the helical path. The recirculation channel (20) comprises a radially inner surface (24) for guiding the balls which move along the recirculation path in accordance with the movement of a generating curve along this same recirculation path.
More Like This:
| JP2003312496 | MOTOR-DRIVEN POWER STEERING GEAR |
| WO/2012/076114 | BALL SCREW |
Inventors:
BOURLON PHILIPPE (FR)
TRAMIS RODRIGUE (FR)
TRAMIS RODRIGUE (FR)
Application Number:
PCT/EP2023/077789
Publication Date:
May 23, 2024
Filing Date:
October 06, 2023
Export Citation:
Assignee:
HITACHI ASTEMO FRANCE (FR)
International Classes:
F16H25/22; B60T13/74; F16D65/18
Foreign References:
| FR2980255A1 | 2013-03-22 | |||
| EP2514999A1 | 2012-10-24 | |||
| DE19749137A1 | 1998-06-10 | |||
| DE102011005517A1 | 2012-09-20 |
Attorney, Agent or Firm:
LLR (FR)
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