Thin type linear motion rolling guide unit with apparatus for pr

Details Thin type linear motion rolling guide unit with apparatus for pr Thin type linear motion rolling guide unit with apparatus for pr

1990-02-16

1990-07-24

Hannon, Thomas R.

Bearings

Linear bearing

Recirculating

384 45, F16C 2906

Patent

active

049431692

ABSTRACT:
A thin type linear motion rolling guide unit with a deviation preventing apparatus of a holder mainly comprises: a flat attaching plate having a pinion rod; a U-shaped long bed fixed onto the attaching plate and having horizontal track grooves on opposite inner wall surfaces; an inverse U-shaped long table having outer horizontal track grooves on the outer wall surfaces, the table being slidably inserted in an inner cavity of the bed with gaps; and a U-shaped long holder arranged between the bed and the table. First and second pinions having the same tooth shape and a gear ratio of 1:2 area formed in the upper portion of the pinion rod so as to penetrate the bottom wall of the bed and a long hole formed in the holder and to project therefrom. A J-shaped second rack member is attached to the inner wall surface of the table. A rack surface is formed on the inner wall surface of the second rack member in engagement with the teeth of the second pinion. The rack surface is formed on the edge surface of the shelf-shaped portion on the side of the curved portion of the J-shaped second rack member. A wedge slit extending in the longitudinal direction in parallel with the rack surface is formed in the shelf-shaped portion, thereby applying the elastic deforming characteristics in the lateral direction to the shelf-shaped portion with the rack surface.

REFERENCES:
patent: 4643591 (1987-02-01), Schwarz
patent: 4647226 (1987-03-01), Mottate
patent: 4701057 (1987-10-01), Kashiwabara
patent: 4701058 (1987-10-01), Mottate

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