JPH01141966U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a part of the end wall and the fitting part of the flexible boot according to the first embodiment of the present invention, with the fitting part being fitted to the tie rod of the steering mechanism, and FIG. 1 is a sectional view similar to FIG. 1, showing the state when the end wall is inverted, and FIGS. 3 and 4 are views of the end wall and fitting part of the flexible boot according to the second embodiment of the present invention. FIG. 5 is a diagram showing a state in which a conventional flexible boot is attached to a steering mechanism; FIG. 6 is a diagram showing the end of the flexible boot in FIG. 5; FIGS. 7 and 8 are partial cross-sectional views showing a state where the wall portion is inverted, and are similar to FIGS. 1 and 2, showing a part of the end wall portion and fitting portion of the conventional flexible boot. FIG. 1... Bellows part, 2, 3... Fitting part, 4... End wall part, 4a, 4e... Gentle slope part, 4b, 4d... Steep slope part, 4c, 4f... Sakai boundary part.

Claims (1)

[Claims for Utility Model Registration] (1) At least one end in the axial direction of the bellows portion is provided with an end wall portion that slopes outward in the axial direction and inward in the radial direction, and an end wall portion is provided on the side of the one end of the bellows portion. A flexible boot is provided with a fitting portion to a machine element on each of the first and the other end sides, and the fitting portion on the one end side is provided at a substantially central position of the end wall portion. The outer surface has a gently sloped portion that extends radially outward over a short distance from the position of the fitting portion, and a steeply sloped portion that extends from the tip of the gently sloped portion to the bellows portion, and When the fitting portion provided on the end wall moves inward in the axial direction of the bellows portion by more than a predetermined value and a force of more than a predetermined value is applied to the end wall accordingly, the end wall A flexible boot characterized by being bent at a boundary between a gently sloped part and a steeply sloped part and reversed so that the end wall part is convex inward in the axial direction of the bellows part. (2) At least one end in the axial direction of the bellows portion is provided with an end wall portion that slopes outward in the axial direction and inward in the radial direction, and a mechanical A flexible boot is provided with a fitting part to the element, and the fitting part on the one end side is provided at a position approximately in the center of the end wall part, and the inner surface of the end wall part is connected to the fitting part. It has a steeply sloped part that extends radially outward over a short distance from the position, and a gently sloped part that extends from the tip of the steeply sloped part to the bellows part, and is provided on the end wall part in response to the movement of the mechanical element. When the fitting portion moves inward in the axial direction of the bellows portion by more than a predetermined value and a force of more than a predetermined value is applied to the end wall portion accordingly, the end wall portion moves between the steeply sloped portion and the gently sloped portion. 1. A flexible boot, characterized in that the flexible boot is bent at the boundary between the bellows part and the end wall part thereof is inverted so as to be convex inward in the axial direction of the bellows part.