JPH08197447A - Valve locker related parts fitting/removing tool for swing arm type engine - Google Patents

Abstract

PURPOSE: To provide a valve locker related parts fitting/removing tool for a swing arm type engine preventing valve locker related parts from being scattered or dropped into a crankcase or the parts or the tool from flying to cause an injury due to the tool coming off a valve spring retainer at the time of applying force to push down a valve spring. CONSTITUTION: A valve locker related parts fitting/removing tool for a swing arm type engine is constituted of a handle 1, a valve spring retainer head holding part 2 bifurcated in Y-shape near the tip of the handle 1, and a pressing protruding part 3 protruding to the opposed face of the holding part 2 so as to press a valve spring retainer top part downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve rocker-related component attaching / detaching tool for a swing arm type engine which can ensure the safety and easiness of operation when attaching / detaching an engine valve system valve rocker-related component.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a work of this type hits a valve spring retainer 5 with a driver 10 or a handle of a hammer, and pushes down a valve spring 6 with a camshaft 11 as a fulcrum to a valve rocker guide 8 or the like. I had no choice but to remove the valve parts. In this method, one of the left and right sides of the valve spring retainer 5 is pushed down, so that the valve spring retainer 5 tilts and its momentum causes the driver 10 and the handle of the hammer to come off the valve spring 6, the valve rocker guide 8, and the cotter 9. , The retainer lock, the spring retainer 5 and other related parts and tools used are scattered and lost, and in some cases, a personal injury may occur, which is a very dangerous work. Also, with the handle of a screwdriver, hammer, etc., the valve spring retainer can only be pushed down, and the valve stem, valve rocker guide, etc. cannot be pushed down, so the work of attaching and detaching the valve system related parts is laborious and time-consuming. there were.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to remove the tool from the valve spring retainer when a force is applied to push down the valve spring, causing the valve rocker-related parts to scatter or drop into the crankcase. Another object is to provide a valve rocker-related component attachment / detachment tool for a swing arm type engine in which the components and tools do not fly and cause injury.

[0004]

SUMMARY OF THE INVENTION According to the present invention, (a) a handle, (b) a valve spring retainer head holding portion which is bifurcated in a Y shape near the tip of the handle, and (c) the holding portion. The present invention relates to a valve rocker-related component attaching / detaching tool for a swing arm type engine, which is composed of a pressing protrusion that projects toward the opposite surface and presses down the top of the valve spring retainer.

Is the handle of (a) slightly bent in the direction in which the force acts or in the direction opposite to the direction in which the force acts?
Or it is preferable that it is slightly bent. Thereby, workability can be improved as compared with a straight handle.

It is preferable that the holding portion (b) has elasticity so that it can be slightly expanded and contracted in the holding direction. This can usually be adjusted by the angle of the Y-shape, the thickness of the holding portion in the holding direction, the properties of the material forming the tool, and the like.

The material forming the tool is usually a metal, especially steel.

One mode of using the tool of the present invention will be described with reference to the drawings.

1 to 3 are views showing one specific example of the tool of the present invention. FIG. 1 is its perspective view, FIG. 2 is a plan view, and FIG. 3 is a front view. In the figure, 1 is a handle, 2 is a holding part, and 3 is a protrusion.

4 to 6 show its usage. In order to prevent the valve rocker-related parts from falling into the cylinder, the piston corresponding to the valve rocker 12 to be removed is moved to the position of the top dead center, and the spring retainer 5 to be removed is aimed to remove the tool of the present invention as shown in FIG. The valve rocker 12 is inserted between the camshaft 11 and the spring retainer 5 with a feeling that it is sandwiched, the projection 3 of the holding portion 2 of the tool of the present invention is aligned with the spring retainer 5, and the camshaft 11 is used as a fulcrum for the valve. Push down the left and right sides of retainer 5 with uniform force. As a result, the valve rocker guide 8 could be easily removed.

[0011]

[Effect] According to the present invention, valve rocker, valve rocker guide, and other valve rocker-related parts are cleaned, inspected,
Maintenance, repair and replacement could be done in a short time. Further, the tool of the present invention has a simple structure, is lightweight and easy to carry, is easy to operate, and does not require any proficiency.

[Brief description of drawings]

FIG. 1 is a part of a tool for attaching and detaching valve rocker-related parts according to the present invention.
It is a perspective view which shows an example.

FIG. 2 is a diagram of a valve rocker-related component attaching / detaching tool of the present invention.
It is a top view which shows an example.

FIG. 3 is a part of a tool for attaching and detaching valve rocker-related parts according to the present invention.
It is a front view which shows an example.

FIG. 4 is a side view showing a state in which the valve rocker-related component attaching / detaching tool of the present invention is inserted between the cam shaft and the spring retainer while sandwiching the valve rocker.

5 is a partially enlarged perspective view of FIG.

FIG. 6 is a partial front view of FIG.

FIG. 7 shows a schematic diagram for explaining a conventional method.

FIG. 8 is a cross-sectional view of a valve upper portion of a swing arm type engine.

FIG. 9 is an exploded view of a valve upper portion of a swing arm type engine.

[Explanation of symbols]

 1 Handle 2 Holding Part 3 Projection 5 Valve Spring Retainer 6 Valve Spring 8 Valve Rocker Guide 9 Cotta 10 Driver 11 Camshaft 12 Valve Rocker 13 Valve Seal 14 Valve Guide 15 Valve Spring Seat / Lower 16 Valve

Claims (3)

[Claims] 1. A (a) handle, (b) a valve spring retainer head holding portion that is bifurcated in a Y shape near the tip of the handle, and (c) a valve spring retainer top portion that protrudes from an opposing surface of the holding portion. A tool for attaching / detaching valve rocker parts of a swing arm type engine, characterized in that it comprises a pressing projection for pushing down the engine. 2. The handle according to claim 1, wherein the handle (a) is slightly bent or bent in a direction in which a force acts or in a direction opposite to a direction in which a force acts. Swing arm engine valve rocker related parts removal tool. 3. The valve rocker-related component attaching / detaching tool for a swing arm type engine according to claim 1, wherein the holding portion of (b) has elasticity so that it can be slightly expanded and contracted in the holding direction.