JPH08216050A - Swing-arm valve rocker arm plate spring type spring attaching/removing tool - Google Patents

Abstract

PURPOSE: To enable a valve rocker arm spring to be attached and removed several times in a reusable state and to enable the operation to be performed easily, efficiently and safely by providing a notched part for at least either the right or left ends of a flat tip screw driver. CONSTITUTION: In an operation for attaching or removing the valve rocker arm spring of an OHC swing arm type engine, an adjusting screw 2 is fully screwed back and then a tool end 9 is inserted through a hole 8 in the upper plate 6 of the valve rocker arm spring 1. While the notched part 4 and the projecting part 5 of the tool are engaged with the lower plate 7 of the spring 1, the main-body end 9 of the tool is pressed against the rocker arm end or the like, and a screwdriver is tilted with the end 9 as a fulcrum to attach or remove the spring 1. Then the valve rocker arm spring 1 can be attached and removed several times in a reusable state without causing deformation or deflection, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for attaching and detaching a swing arm type valve rocker arm leaf spring type spring.

[0002]

2. Description of the Related Art FIG. 1 shows various modes of a valve drive mechanism of a valve train system. As for the valve rocker arm spring attachment / detachment work of the swing arm type engine of OHC, after fully unscrewing the adjusting screw 2 as shown in FIGS. The lower plate 7 of the valve rocker arm spring 1 is pushed down through the plate hole 8 and the driver body or the body tip 10 is brought into contact with the pivot or rocker arm end to serve as a fulcrum. Remove 1 In this method, the removed valve rocker arm spring 1
Deforms and cannot be reused. While there has been a call for an environment-friendly environment such as the waste of resources and the recycling, there has been no method or tool that can meet these demands.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a tool that enables detachment of the removed valve rocker arm spring 1 in a reusable state several times and is easy to work and can be carried out efficiently and safely. It is in the point of providing.

[0004]

The present invention relates to a swing arm type valve rocker arm leaf spring type spring attachment / detachment tool characterized in that at least one of the left and right ends of the tip of a minus type driver is provided with a notch.

One example of the tool of the present invention is shown in FIGS. The type shown in this figure is a type in which notches are provided at both ends of the tip of the driver. This notch can be provided only at one end of the driver tip, but it is better to make the notches evenly on the left and right sides so that both notches 4 and the protrusions 5 are lower parts of the valve rocker arm spring 1. The plate 7 can be engaged.

The valve rocker arm spring 1 is attached and detached as follows. After fully unscrewing the adjusting screw 2, the tool tip 9 of the present invention is inserted through the hole 8 in the upper plate of the valve rocker arm spring 1, and the notch 4 of the tool of the present invention is inserted in the lower plate 7 of the valve rocker arm spring 1. With the convex portion 5 and the convex portion 5 engaged, the main body of the tool of the present invention or the front end portion 9 of the main body is applied to the end of the pivot or rocker arm,
By tilting the driver forward or backward with this as a fulcrum, the valve rocker arm spring 1
Desorption.

The cutout portion is 2/10 to 8 / of the size before the cutout portion.
The purpose can be sufficiently achieved by cutting out 10, preferably 5/10 to 7/10. The depth of the notch, that is, the length of the protrusion is 1 to 10 mm, preferably 3
~ 5 mm.

[0008]

[Effect] The tool of the present invention enables the detached valve rocker arm spring to be reused for several times, and is easy and efficient to eliminate deformation and distortion of the valve rocker arm spring, and to perform work. It can be carried out safely without slipping middle tools, and can prevent injury and loss of parts.

[Brief description of drawings]

FIG. 1 is a diagram of various types of valve drive systems.

FIG. 2 is a cross-sectional view showing a state in which a spring has been inserted into the valve rocker arm after the adjusting screw is fully unscrewed.

FIG. 3 is a perspective view showing a state in which a conventional tool tip portion is inserted.

FIG. 4 is a perspective view showing a state in which a tool tip portion of the tool of the present invention is inserted.

FIG. 5 is a perspective view showing a working state of the tool of the present invention,
The mark is an enlarged view of the tool insertion portion of the present invention.

FIG. 6 is a perspective view of a valve rocker arm spring.

FIG. 7 is a perspective view of the tool of the present invention.

FIG. 8 is a plan view of the tip of the main body of the tool of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Valve rocker arm spring 2 Adjusting screw 3 Rocker arm 4 Notched part of the tool of the present invention 5 Uncut part of the tool of the present invention (convex part) 6 Upper plate 7 Lower plate 8 Hole of upper plate 9 Tool of the present invention Tip 10 Tip of a minus type screwdriver that has been used conventionally

Claims (1)

[Claims] 1. A swing arm type valve rocker arm leaf spring type spring attachment / detachment tool characterized in that at least one of left and right ends of a tip end portion of a minus type screwdriver is provided with a cutout portion.