Thk Co., Ltd.

Ryuichi Yamakoshi

Toru Takahashi

Yoshihiro Hamada

A motion guide apparatus is provided which can make a carriage compact without reducing a rated load and an allowable load. The motion guide apparatus includes: a track member () and a carriage () that moves along the track member (). A circulation path () of the carriage () includes a loaded path (C), a return path (C) parallel to the loaded path (C), and a substantially U-shaped turn path (C) connected to the loaded path (C) and the return path (C). At least a part of the turn path (C) bends in side view in a direction where the loaded path (C) and the return path (C) coincide.

Motion guide apparatus

Ball retainer belt

A ball housing band is provided which can encourage increases in precision and rigidity of a motion guide apparatus and make the motion guide apparatus compact. A ball housing band includes: a housing band including a band formed with ends, the band having at least two rows of opening portions, and a plurality of spacers placed between the opening portions of the rows; and at least two rows of balls housed in the at least two rows of the opening portions. One of adjacent rows of and the other row of the balls are placed in a staggered arrangement in a state where the spacers are disposed between the balls and between the balls. The one row of the balls overlap the other row of the balls as viewed in the length direction of the ball housing band.

Ball housing band and motion guide apparatus

A multi-row rolling element housing band is provided which can promote an increase in the degree of precision of a guide. At least three rolling element rows () to () are arranged in a band (). Each second rolling element () of the second rolling element row () is displaced by P/n in a length direction of the band () from each first rolling element () of the first rolling element row (). Each third rolling element () of the third rolling element row () is displaced by P/n in the length direction of the band () from each second rolling element () of the second rolling element row (). P is the pitch between the first rolling elements (), and n is the number of rows.

Growing community of inventors

Tokyo, Japan

Ryuichi Yamakoshi