BALL SLIDE RAIL

WIPO Patent Application WO/2022/061687

A1

A ball slide rail (100) comprises at least one outer slide rail (1), an inner slide rail (2) located in the outer slide rail, a ball cage (4) positioned between the inner slide rail and the outer slide rail, and three rows of balls (3) slidably positioned on the ball cage. The balls comprise a first ball row (31), a second ball row (32), and a third ball row (33) located between the first ball row and the second ball row in a vertical direction. The inner slide rail comprises a first curved portion (24) abutting the first ball row, a second curved portion (25) abutting the second ball row, and a third curved portion (26) abutting the third ball row. The third curved portion is located between the first ball row and the second ball row in the vertical direction, and is arranged symmetrically with respect to a symmetry axis of a central connecting line between the first ball row and the second ball row. The design of the first curved portion, the second curved portion, and the third curved portion increases the internal space of the ball slide rail where the inner slide rail is located, improves the configuration of the ball cage, and optimizes the configuration of the ball slide rail.

XU XINGLONG (CN)
ZHANG HAIWEN (CN)
ZOU LIAN (CN)
QIAN FENG (CN)
DAI KAI (CN)
JI QIANG (CN)

PCT/CN2020/117619

March 31, 2022

September 25, 2020

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WUXI HAIDAER PREC SLIDES CO LTD (CN)

A47B88/477; F16C29/04; F16C33/40

CN105508422A	2016-04-20
CN2534886Y	2003-02-12
CN103206454A	2013-07-17
CN201200125Y	2009-03-04
TW201300051A	2013-01-01
CN103096756A	2013-05-08
CN101969811A	2011-02-09
US20200245766A1	2020-08-06

SUZHOU JIABO INTELLECTUAL PROPERTY AGENCY (CN)

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