Sheet metal locking cover for a cam phaser

Abstract

A cam phaser includes a stator, a rotor positioned in the stator, a cover plate positioned on a first side of the stator, a locking cover positioned on a second side of the stator, a locking pin assembly configured to selectively lock the rotor in a position relative to the stator, a plurality of aligned first openings which extend through the stator, the cover plate, and the locking cover, a plurality of fasteners respectively inserted in the plurality of aligned first openings, and a plurality of aligned central openings forming a throughbore. The locking cover has a body made from sheet metal having a first axial side, a second axial side, a plurality of the first openings and a second opening. The body has a web portion and a plurality of reinforcing portions which are thicker than theweb portion.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Patent Application Serial No. 15 / 338,309, filed October 28, 2016, which is incorporated by reference as if fully set forth. technical field [0003] The present invention relates to a cam phaser, and more particularly, to a sheet metal locking cover for a cam phaser. Background technique [0004] Cam phasers are known devices used in engines to vary valve timing. Many cam phasers, such as vane cam phasers, include locking covers that are attached over the moving parts of the phaser. The locking cover can be used as a stationary part which helps to keep the rotor in the stator and facilitates the locking of the locking pin. [0005] Figure 3A and Figure 3B An example of a prior art locking cover 100 that may be used in conjunction with a cam phaser is shown. The locking cap 100 is annular and includes a body 102 of uniform thickness with a central bore 104 extending theret...

AI Technical Summary

Problems solved by technology

However, these processes use a relatively large amount of raw material to produce the locking cap 100

In turn, cam phasers using known locking caps 100 are large, heavy, and have relatively high manufacturing costs due in part to the construction of the locking caps.

Attempting to solve some of these problems by simply sizing the locking cover 100 to a uniform thickness is not a suitable solution, as this would reduce the strength of the locking cover and make the locking cover 100 more susceptible to cracking or other types of damage. out of shape

Furthermore, a uniformly thinner locking cap would not match the thickness of the existing bushing 110

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