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Rush adjuster

A valve clearance and adjuster technology, which is applied in the direction of machines/engines, engine components, mechanical equipment, etc., can solve the problems of management troubles, forgetting to put the fixing pins in the engine, forgetting to pull out the fixing pins, etc., and achieve the effect of easy management

Inactive Publication Date: 2010-08-18
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of forming small-diameter through-holes in the adjusting screw and nut member is high. In addition, when initially fixing the adjusting screw, it is necessary to make the through-hole of the adjusting screw coincide with the through-hole of the nut member, but the position of the small-diameter through-hole Consistent assignments are not easy
In addition, when the lash adjuster is installed in the valve gear, it is possible to forget to pull out the fixing pin.
In addition, if the fixing pin is not forgotten, there is a possibility that the fixing pin pulled out from the through hole may be forgotten to be placed in the engine.
In addition, since the fixing pin is used again when the engine is overhauled, it is necessary to store the fixing pin in advance even after the lash adjuster is installed in the valve gear, and its management is troublesome.

Method used

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  • Rush adjuster
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Experimental program
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Embodiment Construction

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Abstract

Provided is a rush adjuster, which can perform the initial setting of an adjust screw repeatedly and which is simple in the work to set the adjust screw initially. The rush adjuster comprises a nut member (14) having a female thread (20) in its inner circumference, an adjust screw (15) having such a male thread (19) on its outer circumference as engages the female thread (20), and a return spring(17) for biasing the adjust screw (15) in a direction to protrude from the nut member (14). The rush adjuster further comprises a washer (18) adapted to be axially deformed, when the adjust screw (15) is screwed in the nut member (14), so that a rotational friction resistance to stop the rotation of the adjust screw (15) is established by the elastic restoration.

Description

valve clearance adjuster technical field The present invention relates to a lash adjuster of a valve device incorporated into an engine. Background technique As a valve device for actuating a valve provided at an intake port or an exhaust port of an engine, the following device is known: a cam is used to push down the central part of an arm part that is swingably supported with one end part as a fulcrum, A device in which the other end of the arm presses the valve stem (rocker valve device); one end of the arm that is swingably supported with the central part as a fulcrum is lifted up by a cam and pressed down with the other end of the arm A device for the valve stem (reciprocating rod valve device); and a lifter supported by a cam that is slidably supported up and down, and a device for pressing the valve stem with the lifter (direct valve device), etc. In these valve devices, the gap between the components of the valve device changes due to the thermal expansion differ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/22F01L1/14F01L1/20
CPCF01L1/22F01L1/185F01L1/143
Inventor 安井诚前野荣二山口克久
Owner NTN CORP