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Patent Searching and Data


Title:
LASH ADJUSTER IN VALVE MECHANISM
Document Type and Number:
Japanese Patent JP2012144983
Kind Code:
A
Abstract:

To absorb a shrinkage difference caused by the difference in the coefficient of linear expansion between an engine block and a valve during cooling, by an axial clearance formed between division faces in an axial direction of a plunger, and to always keep the axial clearance constant.

A plunger 26 is divided into a screw member 28, to be screwed with a female screw 22 formed on an inner circumference of a body 21, and a slide member 27 having a top end exposed to the outside through one end opening of the body 21. Rotational force is imparted by a torsion coil spring 43 assembled in the body 21 to the screw member 28 in a direction of moving toward the slide member 27. A pusher 34 and a compression coil spring 35 are assembled in a recessed part 33 on a rear end face of the slide member 27, and the pusher 34 is retained by a retainer ring 37 attached to an inner circumference of the opening end of the recessed part 33. A convex shaft part 39 is formed at a top end face of the screw member 28, and the top of the convex shaft part 39 is brought into contact with the rear end face of the pusher 34, to form an axial clearance G between the opposing faces of the screw member 28 and the slide member 27.


Inventors:
SONE KEISUKE
MUKAI HIROKI
Application Number:
JP2011000001343
Publication Date:
August 02, 2012
Filing Date:
January 06, 2011
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F01L1/255; F01L1/14
Attorney, Agent or Firm:
鎌田 文二
東尾 正博
田川 孝由