ELECTRIC LINEAR ACTUATOR AND ELECTRIC BRAKE DEVICE

WIPO Patent Application WO/2016/076083

A1

In the present invention, circumferential grooves (52) that engage a helical protrusion (51) provided in the inner diameter surface of an outer ring member (21) are formed in the outer diameter surface of planetary rollers (49), and by means of the rotation of a rotary shaft (34) the planetary rollers (49) are made to rotate on their axes and revolve by means of frictional contact with the rotary shaft (34), thereby moving the outer ring member (21) linearly in the axial direction. With respect to the range of the axial length of a sliding guide gap formed between the inner diameter surface of a cylinder chamber (20a) and the outer diameter surface of the outer ring member (21), when at least the portion of the sliding guide gap corresponding to the planetary rollers (49) is set as an increased gap fit section (g), and when the diameter of the outer ring member (21) expands due to elastic deformation, the expanded portion thereof is accommodated by the increased gap fit section (g), thereby preventing the linear movement of the outer ring member (21) from being obstructed.

EGUCHI MASAAKI (JP)
YAMASAKI TATSUYA (JP)

PCT/JP2015/079592

May 19, 2016

October 20, 2015

Click for automatic bibliography generation  

NTN TOYO BEARING CO LTD (JP)

F16H25/20; F16D65/18; F16H19/02; F16H25/24; F16J15/18; F16D121/20; F16D121/24

WO2008004306A1

2008-01-10

JP2010065777A	2010-03-25
JP2002529668A	2002-09-10
US20120090418A1	2012-04-19
JP2011105075A	2011-06-02
JP2010285000A	2010-12-24
JP2002535581A	2002-10-22

KAMADA Naoya et al. (JP)
Naoya Kamata (JP)

View/Download PDF      PDF Help

Previous Patent: PRESSURE ADJUSTMENT DEVICE AND INKJET PRINTING APPARATUS

Next Patent: PRINTING APPARATUS AND PRINTING METHOD