JPS63133636U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the first embodiment;
The right half of the figure is an elevational view showing the track rail with the side plate removed and the track rail cut at the center of the rail mounting hole.
3 is a perspective view of the same spacer as above, FIG. 4 is an elevation view of the upper side plate on the casing side, FIG. 5 is an elevation view of the side plate side of the spacer of the second embodiment, and FIG. 6 is a side view of the spacer as above 7 is a partially enlarged bottom view in the direction of the arrow in FIG. 5; FIG. 8 is an elevational view of the upper side plate on the spacer side;
9 is a sectional view taken along the line in FIG. 8, FIG. 10 is a partially enlarged elevational view of the upper side plate, FIG. 11 is a partial top view in the direction of the arrow in FIG. 10, and FIG. FIG. 1: Side surface, 2: Rail raceway groove, 3: Track rail, 4: Inner surface, 5: Inner raceway groove, 6: Return path, 7: Casing, 8: End surface, 9: Load path,
10: Turning path, 11, 11a: Side plate, 12:
Ball, 13: Hanging portion, 14, 14a: Direction change path groove, 15: Projection end fitting groove, 16, 16
a: Spacer, 17, 17a: Inner wall side, 18,
18a: Turning path protrusion, 19: Thin wall portion, 20
: end, 21: positioning protrusion, 22, 23: positioning hole.

Claims (1)

[Scope of utility model registration request] A track rail having a rail raceway groove recessed in the longitudinal direction; and an inner raceway groove facing the rail raceway groove being recessed in the longitudinal direction on an inner surface facing the track rail, and each of the inner raceway grooves. a casing in which a return path is formed parallel to the casing; and a substantially semicircle that can be attached and fixed to both ends of the casing in the direction of travel, and that connects the return path and a load path formed by both opposing raceway grooves. The track rail comprises a side plate in which an arcuate direction change path is formed, and a large number of balls arranged and held so as to be able to circulate infinitely in an endless circulation path consisting of the load path, the return path, and the bidirectional change path of the side plate. In a ball bearing for infinite linear motion, on which the casing is slidably fitted across via balls in the load path, a direction change path forming an outer wall surface of the direction change path on each of the both side plates. A concave groove and a protrusion end fitting concave groove are provided, and a thin U-shaped spacer can be attached between the casing and the side plate, and the inner wall surface of the direction change path is attached to the spacer. A short semi-cylindrical turning path protrusion to be formed protrudes from side to side, and a U-shaped thin part is formed to connect the bidirectional turning path protrusions, and the bidirectional turning path protruding portion of the spacer Both ends of the side plate can be fitted into respective grooves for fitting the protrusion ends of the side plate, and a positioning protrusion is provided protruding from the casing near the direction change path groove of the side plate, and the spacer and A positioning hole is formed in each of the casings, and the positioning protrusion can be fitted into the positioning hole of the spacer and the casing, and the casing, spacer and side plate can be positioned and fixed by fitting the positioning protrusion into the positioning hole. A structural structure of a direction change path of a small ball bearing for infinite linear motion, characterized in that the direction change path is formed.