JPS598573A - Device and method of regulating initial set load of suspension system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a method and device for adjusting the initial setting load of a suspension suspension interposed between relatively movable members of a shock absorber in a rear wheel suspension system for a motorcycle.

Conventionally, in a suspension system, a suspension spring combined with a shock absorber is interposed between the main body of the shock absorber and a piston rod. The cam surface is designed to engage with a stopper protruding from the main body, and the cam cylinder is rotated to change the relative position of the cam surface and the stopper. The set load can be adjusted.

However, since this cam cylinder is always urged by the suspension spring and in pressure contact with the stopper, a large amount of operating force is required to rotate the cam cylinder, and the cam cylinder automatically rotates to prevent the suspension spring from moving. To adjust the initial setting load, use %
A separate actuator (hydraulic or air cylinder, or screw means) is required, which complicates the structure and increases weight and cost.

The present invention has been made to solve the above-mentioned problems, and provides a method and device for adjusting the initial setting load of a suspension suspension device with a simple structure and easy operation. The purpose is to provide.

Hereinafter, embodiments of the present invention will be explained based on the drawings.

In FIG. 1, reference numeral 1 denotes a swing arm that supports a wheel, and is pivotally supported on a part of a frame 2 of a motorcycle by a pedestal shaft 3. Reference numeral 4 denotes a lever whose central portion is supported swingably by a part of the frame 2, and one end of the lever is connected to the middle of the swing arm 1 by a link quad 5), and the other end of the lever is connected to the middle of the swing arm 1. Shock absorbers 6 are interposed between the base and the vicinity of the base. , 7 are stoppers that will be explained in detail later.

The shock absorber 6 will be explained with reference to FIG. 2. A suspension spring 12 is interposed between the shock absorber 60 main body 8 and the piston rod 9 via upper and lower spring seats 10 and 11. This lower spring seat) 121-t is attached to the outer periphery of the main body 8, and the upper spring seat 10 is a rotary adjuster 14 that engages with a cam cylinder 13 attached to the piston rod 9.
It is in pressure contact with the

As shown in FIG. 3, the lower peripheral surface of the cam cylinder 13 is formed into a stepped cam surface 13A whose height changes stepwise.

When the rotary rear adjuster 14 is rotated by engaging the cam stop horn c14A formed on the outer periphery of the rotary rear adjuster 14 as shown in FIG.
The relative position of f14A has changed, and the rotary ag-V meta 1
4 can be raised and lowered to adjust the initial setting load of the suspension spring 12. A threaded coil spring 15 is interposed between the cam cylinder 13 and the rotary adjuster 14, and urges the rotary adjuster 14 to return to its original position when the rotary adjuster 14 is made rotatable. Further, reference numeral 16 indicates an operation wire for displaying the current position of the rotary adjuster 14 and for controlling the rotating position.

As shown in FIG.
The stopper 7 is rotatably supported by a shaft 17 which is connected to the shaft 17, and is normally biased by a spring 18 so that the arm 7A faces forward (leftward in the drawing).The mounting position of the stopper 7 is When the shock absorber 6 is compressed in the IG direction (when it is in a stationary state with an average load applied), the spring seat 10 is in a position where the arm 7A can lock it.

Next, the effect will be explained.

To adjust the initial setting load of the suspension spring 12, first remove the stand and ride the vehicle.The shock absorber 6 is compressed to the state shown in FIG. 5 by the load of IG (average driver's weight), and the spring Sheet 10 is
It is located below the stopper 7. Therefore, the arm 7A of the stopper 7 is rotated backward as shown in the figure and held in that position.

The driver is a two-wheeler. Then, the shock absorber 6 is extended, and the spring seat 10 is locked to the arm 7A of the stopper 7, as shown in FIG. In this state, since the rotary adjuster 14 is separated from the spring seat 10, it can rotate freely, and as a result, the initial setting load of the suspension sedge ring 12 can be easily adjusted.

Next, when the rider rides the vehicle again, the relationship between the stone 4'7 and the spring seat 10 becomes as shown in FIG. do.

Although this stopper 7 is provided on a part of the frame 2, it may be provided on a part of the swing arm 1.

As explained above, according to the present invention, the strut 4 is attached to a part of the vehicle body or the swing arm. A member is attached to the stopper, and the spring seat of the suspension spring is selectively locked by this stopper, so that the cam cylinder and the stone groove can freely rotate relative to each other, so that the suspension spring can be easily and accurately moved. In addition to being able to adjust the initial setting load, it also has the effect of reducing weight and cost since no special actuator or the like is required.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing an embodiment of the present invention, Fig. 2 is a detailed view showing the main parts of Fig. 1, Fig. 3 is an explanatory diagram showing the relationship between the cam step surface and the cam stopper, and Fig. 4 is a rotary FIG. 5 is a perspective view showing the adjuster, FIG. 5 is an explanatory view when a load is applied to I C+-, lu, and FIG. 6 is an explanatory view when the shock absorber is held in a compressed state. 1... Swing arm, 2... Frame, 6...
Shock absorber, 7...Stopper, 7A...Stopper arm, 8...Body, 9...Piston rond, 10°11...Spring seat% 12...Suspension spring. 13...Cam cylinder, 13A...Cam step surface, 14...Rotary adjuster, 14A...Cam stopper, ], 7
···shaft. Patent applicant: Kayaba Kogyo Co., Ltd. Figure 1 Figure 3 Figure 4 3A Figure 2

Claims (1)

[Scope of Claims] 1. A shock absorber is interposed between the axle side and the vehicle body, and a suspension spring is interposed between the main body of the shock absorber and the piston rond via a spring seat, and the spring seat and the A relatively rotatable cam cylinder and a stopper are interposed between the main body or the piston rond, and a cam step surface formed on the cam cylinder is locked by the stopper,
In an initial setting load adjustment device for a suspension system that can increase or decrease the initial setting load of a suspension spring by relative rotation of a cam cylinder and a stopper, a spring seat is fixed to a part of the vehicle body in a compressed state of the suspension spring. An initial setting load adjusting device for a suspension system, characterized in that a stopper member is rotatably provided. 2 A shock absorber is interposed between the axle side and the vehicle body, a suspension spring is interposed between the main body of the shock absorber and the piston rond via a spring seat, and a suspension spring is interposed between the spring seat and the main body or the piston rond. A relatively rotatable cam cylinder and a stopper are interposed therebetween, and a cam step surface formed on the cam cylinder is locked by the stopper,
A stopper member is rotatably provided to hold the cam cylinder and the stopper in a suspended state by relative rotation, and after compressing the shock absorber and compressing the spring, the stopper member holds the spring seat. The cam is at the correct position when no load is applied to the cam cylinder and stopper! A method for adjusting the initial load of a suspension system, which consists of adjusting the cam position and then removing the stopper member.