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Shaft assembly

A technology of shaft assembly and assembly, applied in the direction of bearing elements, shafts, crankshafts, etc., can solve the problems of time-consuming, expensive surface, etc.

Active Publication Date: 2017-01-11
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Producing such precisely machined surfaces is expensive and time-consuming

Method used

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Examples

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Embodiment Construction

[0046] specific reference Figure 1a , Figure 1b , figure 2 and image 3 , shows an engine 1 having a cylinder head 2 , a cylinder block 3 and a trapezoidal frame 9 bolted to the lower end of the cylinder block 3 . The trapezoidal frame 9 defines at the lower end a front bearing support structure 7f and a rear bearing support structure 7r, to each of which a respective error proof bearing cap 10f, 10r is bolted by a pair of bolts 25 . The front bearing cap 10f is bolted to the front bearing support structure 7f and the rear bearing cap 10r is bolted to the rear bearing support structure 7r.

[0047] In the exemplary case where the shaft 8 is an engine balancer shaft, the shaft 8 is rotatably supported by the front bearing cap 10f and the rear bearing cap 10r and the front bearing support structure 7f and the rear bearing support structure 7r to form a shaft and bearing assembly. In the example case, the shaft 8 is rotatably supported by two bearing support assemblies 7f, ...

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PUM

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Abstract

A shaft assembly may include two or more Poka-Yoke bearing caps, each Poka-Yoke bearing cap having a pair of reference bores offset from a central axis of the bearing cap by differing offset distances, and each bearing cap defining a semi-circular recess that is positioned so as to align in use a central axis of the semi-cylindrical recess in the bearing cap with an axis of rotation of a shaft rotatably supported by the bearing cap. The differing offsets of the reference bores prevent the bearing cap from being assembled in a reversed orientation. To ensure that each bearing cap can only be fitted in one position, a centre spacing between the first and second reference bores of each bearing cap is different to the centre spacing used for other bearing caps used to support a single shaft.

Description

[0001] related application [0002] This application claims priority to UK Patent Application No. 1511413.5 filed 30 June 2015, which is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The present invention relates to rotatably supporting shafts, and in particular to Poka-Yoke bearing caps forming part of a shaft assembly. Background technique [0004] It is known to support a shaft using a split bearing support having two parts defining a bore in which the shaft is rotatably supported. [0005] Assemblies of rotating shafts require split bearing supports with bores that provide very good positional tolerances, cylindricity and concentricity, regardless of the type of bearing used. [0006] The required accuracy is best met if the split bearing support is drilled straight together, ie all concentric holes are machined in one operation with all parts in place. [0007] In order to meet the functional requirements, it is important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F7/00F01L1/047F16C3/035F16C3/06
CPCF01L1/047F02F7/0021F02F7/006F02F7/0073F02F7/0082F02F7/0095F16C3/035F16C3/06F16C35/02F16C35/10F16C2326/06F16C35/047F16C35/12F01L2001/0476F02F7/0053F02F7/00F16C9/02
Inventor X·德默勒纳尔M·米歇尔
Owner FORD GLOBAL TECH LLC
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