JPS61139311U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view of the first embodiment of the present invention, Fig. 2 is a sectional view of the second embodiment of the invention, and Fig. 3 is a partial sectional view of the third embodiment of the invention. FIG. 4 is a partial cross-sectional view of the fourth embodiment of the present invention, in which reference numeral 10 indicates a shaft, and 2
0, 30, 120, 130 are outer rings, 40, 50 are balls, 60, 70, 160, 170, 260 are spring seats, 80 is a spring, and 66, 176, 136 are ball seats.

Claims (1)

[Claims for Utility Model Registration] (1) A shaft having two rows of outer raceway grooves formed at intervals on its outer diameter, and two outer rings each having inner raceway grooves corresponding to the outer raceway grooves. , a preload bearing with a shaft, comprising a plurality of balls arranged in two rows arranged between the outer and inner raceway grooves, and a preload means arranged between the end faces of the outer ring and pressing the outer rings in a direction to separate them from each other. In the device, the preloading means includes an annular thin spring seat and a spring disposed in contact with an end surface of the spring seat, and the preloading means is arranged in a space between one of the outer rings and the shaft on the side of the preloading means. A preload bearing device with a shaft, characterized by comprising a ball seat that extends to a position approaching the balls. (2) The spring seat includes an annular thin radial flange and a cylindrical portion extending in the axial direction from the inner side of the radial flange, and the radial flange is sandwiched between the spring and the other outer ring. The preload bearing device with a shaft according to claim 1, wherein the cylindrical portion extends to a position where the end thereof approaches the balls of one outer ring side row and serves as the ball seat. . (3) The spring seat includes an annular thin radial flange and a cylindrical portion extending in the axial direction from the inner side of the radial flange, and the radial flange is provided between the spring and the other outer ring. A preload bearing with a shaft according to claim 1, wherein the cylindrical portion is held in place and its end portion extends to a position where it approaches the balls of the other outer ring side row and serves as the ball seat. Device. (4) One of the outer rings has a flange that protrudes from the end on the preloading means side toward the shaft, and one end of the flange approaches the balls in the row on the one outer ring side and serves as a ball seat. A preload bearing device with a shaft according to claim 1, which has been registered as a utility model. (5) The preload bearing device with a shaft according to claim 2, claim 3, or claim 4, wherein the inner diameter of the spring seat or collar is eccentric with respect to the center of the shaft. (6) The shaft-equipped preload bearing device according to any one of claims 1 to 5, wherein the spring is a wave spring.