Ball bearing slide unit for linear motion

Details Ball bearing slide unit for linear motion Ball bearing slide unit for linear motion

1981-08-20

1983-06-28

Levy, Stuart S.

Cutlery

F16C 2906

Patent

active

043902154

ABSTRACT:
A ball bearing slide unit for linear motion is mounted on a track rail of rectangular cross section having track surfaces at both of its side surfaces, and is provided with track surfaces opposing said track surfaces on said track rail, with linear return holes running parallel to said track surfaces, and with direction changing paths which connect corresponding ends of said track surfaces and said return holes respectively, and is formed with circulating paths where groups of balls endlessly circulate supporting a load and rolling between both said track surfaces. The slide unit is characterized in that it comprises plastic side plates wherein circular arc shaped direction changing paths are formed for connecting said track surfaces and return holes. Track plate retainers are mounted on both ends of the slide unit body externally contacting the ends of track plates and rod shaped ball retaining members. The plate retainers have track surfaces and provide the ends of said return holes. The retainers form part of said direction changing paths with the side plates which are furtehr externally mounted, and which are formed with a recess of downward facing channel shape, said recess having resilient short claw members which are perpendicularly bent and projecting at the top ends of its inner edges, and are provided, at a position contacting the track surface end of said track plate, with half circular cuts, and which are provided, at a position contacting the ends of said return holes, with circular holes. The ball retainers prevent the group of balls from falling out of the track surface of the slide unit, and are made of thin metallic rod members and formed into main member portions of straight rod shape, bent pieces bent perpendicularly from both ends thereof and hook shaped pieces at the tip of said bent pieces, and which are hooked onto the side plate of the slide unit by said bent pieces and hook shaped pieces.

REFERENCES:
patent: 3540782 (1970-11-01), Worm
patent: 3552806 (1971-01-01), Weasler et al.
patent: 3940186 (1976-02-01), Nilsson
patent: 4309061 (1982-01-01), Teramachi

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