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Ball joint

A ball-socket joint and ball-bolt technology, which is used in connection, pivot connection, motor vehicle, etc., can solve problems such as mud and water foreign matter intrusion.

Inactive Publication Date: 2013-10-30
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, foreign matter such as mud and water may infiltrate into the cover in cold regions.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0019] figure 1 It is a partial sectional view showing the structure of the ball joint 1 according to the first embodiment of the present invention. exist figure 1 In FIG. 2 , the state after the ball joint 1 is attached to, for example, a knuckle arm (attached member) 51 for a suspension device is shown. The ball joint 1 is provided at a connecting portion between the knuckle arm 51 and a steering device (not shown), and functions as an outer ball joint. The ball joint 1 supports the knuckle arm 51 in a steerable and vertically movable manner.

[0020] The knuckle arm 51 includes, for example, an aluminum knuckle body (not shown), and an aluminum bracket 52 fastened to a lower portion of the knuckle body. A knuckle hole for passing the shaft portion 12 of the ball stud 4 is formed at a predetermined position of the plate-shaped portion (mounted portion) of the brac...

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PUM

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Abstract

A ball joint (1) includes a tubular boot (5), an upper end portion (5a) and a lower end portion (5b) of which are fitted onto an intermediate portion of a shaft (12) of a ball stud (4) and an open end (6a) of a housing (2), respectively. An annular lip portion (70) is formed at the upper end portion (5a) of the boot (5). The lip portion (70) has a first sliding contact face (32) that is in contact with an outer periphery of the shaft (12), a second sliding contact face (33) that is in contact with a lower face (52b) of the knuckle arm (51), and an annular rib (61) that is formed so as to project inward beyond the first sliding contact face (32) from an upper end portion of the first sliding contact face (32). The rib (61) is elastically deformed due to contact with the shaft (12) so as to extend along the first sliding contact face (32) and project upward beyond the second sliding contact face (33).

Description

technical field [0001] The present invention relates to ball joints. Background technique [0002] For example, a connection portion between a steering device and a knuckle arm of a suspension device includes a ball joint (so-called outer ball joint) that supports the knuckle arm in a steerable and vertically movable manner. In such a ball joint, there is a structure including: a metal ball stud having a ball head provided at the proximal end of the shaft; The ball head is held inside in the state of the ball head; a synthetic resin resin sheet interposed between the shell and the ball head; and a cylindrical rubber cover attached to the shell (for example, WO2011 / 033867A1). The ball stud is capable of swinging around the ball head relative to the housing, and is rotatable around the central axis of the shaft portion. [0003] The cover covers the opening of the housing, and prevents foreign matter such as mud and water from entering the housing at a connection portion bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C11/06
CPCF16C11/0671F16C11/0666F16J3/042F16C11/0695F16J15/52B60G2204/416B62D7/166F16C2326/24Y10T403/32729
Inventor 芝田英夫水田进一
Owner JTEKT CORP