公开(公告)号：US4794894A

公开(公告)日：1989-01-03

申请号：US22229

申请日：1987-03-05

Applicant: Daniel E. Gill

Inventor： Daniel E. Gill

IPC: B21D39/04 ,  F01L1/14 ,  F02M57/02 ,  F02M59/44 ,  F02M61/16 ,  F16B4/00 ,  F16C11/06

CPC classification number: F01L1/146 ,  F02M57/023 ,  F02M59/445 ,  Y10T29/49295 ,  Y10T29/49945 ,  Y10T403/21 ,  Y10T403/4966 ,  Y10T74/2142

Abstract: A pivot rod, such as a push rod of the type found included in fuel injector drive trains and engine cylinder valve drive trains, has a mounting shaft with an interior receiving space at at least one end thereof, and a pivot insert formed of a ceramic material that is positioned with a first portion thereof disposed within the receiving space of the mounting shaft and a second portion thereof projecting axially beyond the end of the mounting shaft. To avoid tensile "hoop" stresses from exceeding the maximum tensile principle stress of the ceramic material of the pivot insert, despite the use of an interference fit securement between the pivot insert and the mounting shaft, and despite variations in the degree of diametral interference existing between the internal diameter of the receiving space and the external diameter of the inserted pivot insert portion resulting from manufacturing tolerances, the wall of the pivot shaft taking part in the interference fit securement has its thickness and material composition coordinated with the maximum tensile principle stress so that the wall is plastically deformed by the pivot insert during formation of the interference fit securement. When an axially projecting portion of the pivot insert has an abutment surface in abutting engagement upon an end surface of the mounting shaft, the axial length of the interference fit securement between the pivot insert and mounting shaft is also coordinated to the maximum tensile principle stress of the ceramic material.

公开(公告)号：US4806040A

公开(公告)日：1989-02-21

申请号：US13902

申请日：1987-02-12

Applicant: Daniel E. Gill ,  Shigeo Suzuki ,  Yasuo Sakata

Inventor： Daniel E. Gill ,  Shigeo Suzuki ,  Yasuo Sakata

IPC: F01L1/14 ,  F01L1/46 ,  F02M57/02 ,  F02M59/44 ,  F16C11/06 ,  F16D1/00

CPC classification number: F16C11/06 ,  F01L1/146 ,  F01L1/46 ,  F02M57/023 ,  F02M59/445 ,  Y10T403/18 ,  Y10T403/32647 ,  Y10T403/74

Abstract: A ball and socket joint which allows the precise positioning of the line of contact between the ball and the socket utilizing a spherically curved socket and an offset radius ball. The significant manufacturing difficulties associated with the shaping of an offset radius socket is avoided by the use of the spherical socket and offset radius ball. Furthermore, the ball and socket configuration enables use of ceramic materials to produce the socket and/or ball components which, in turn, results in a dramatic increase of the life of the ball and socket joint.

Abstract translation: 一种球窝接头，允许使用球形弯曲的插座和偏移半径球来精确定位球和插座之间的接触线。 通过使用球形插座和偏移半径球来避免与偏移半径插座成形相关的重大制造困难。 此外，球窝配置使得能够使用陶瓷材料来生产插座和/或球部件，这又导致球窝接头的寿命显着增加。