Title:
ANTI-BACKLASH BALL NUT AND LINEAR MOTION DEVICE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2023/219461
Kind Code:
A1
Abstract:
The present invention relates to an anti-backlash ball nut and a linear motion device including same. The linear motion device comprises: an anti-backlash ball nut; a screw passing through the anti-backlash ball nut; a driving motor for rotating the screw; a table coupled to the anti-backlash ball nut and movable in a straight line; and a base coupled to a guide rail connected to the table. The anti-backlash ball nut comprises: a nut body through which a screw may pass, the nut body having multiple ball groove portions formed at intervals in the circumferential direction thereof and connected to the screw groove of the screw; multiple ball portions accommodated in the ball groove portions, respectively, and partially passing through the nut body so as to be caught in the screw groove; and a housing that surrounds the nut body so that the ball portions do not escape from the ball groove portions. The multiple ball portions may rotate along the screw in the ball groove portions.
Inventors:
LEE JONG KI (KR)
Application Number:
PCT/KR2023/006475
Publication Date:
November 16, 2023
Filing Date:
May 12, 2023
Export Citation:
Assignee:
LEE JONG KI (KR)
International Classes:
F16H25/22; F16H25/24; F16H57/00; F16H57/04
Foreign References:
| JPH11514076A | 1999-11-30 | |||
| US4022076A | 1977-05-10 | |||
| JP6804783B1 | 2020-12-23 | |||
| JPH07332456A | 1995-12-22 | |||
| JP2013024319A | 2013-02-04 | |||
| KR102490898B1 | 2023-01-20 |
Attorney, Agent or Firm:
KIM, Jin Dong (KR)
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